Catalytic domain of Type III Phosphoinositide 4-kinase beta; PI4Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 4-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) to generate PtdIns(4)P, the major precursor in the synthesis of other phosphoinositides including PtdIns(4,5)P2, PtdIns(3,4)P2, and PtdIns(3,4,5)P3. Two isoforms of type III PI4K, alpha and beta, exist in most eukaryotes. PI4KIIIbeta (also called Pik1p in yeast) is a 110 kDa protein that is localized to the Golgi and the nucleus. It is required for maintaining the structural integrity of the Golgi complex (GC), and is a key regulator of protein transport from the GC to the plasma membrane. PI4KIIIbeta also functions in the genesis, transport, and exocytosis of synaptic vesicles. The Drosophila PI4KIIIbeta is essential for cytokinesis during spermatogenesis. The PI4K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 539 SAVALKEPWQEKVRRIREGSPYGHLPNWRLLSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSG 618
Cdd:cd05168     1 SAAAFGESWEEKKERIRKSSPYGHLPGWDLRSVIVKSGDDLRQELLAMQLIKQFQRIFEEAGLPLWLRPYEILVTSSDSG 80

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 619 MIEPVVNAVSIHQVKKQSQ--LSLLDYFLQEHGSYTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHII 696
Cdd:cd05168    81 LIETIPDTVSIDSLKKRFPnfTSLLDYFERTFGDPNSERFKEAQRNFVESLAAYSLVCYLLQIKDRHNGNILLDSEGHII 160

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 697 HIDFGFILSSSPRNLGFETSAFKLTTEFVDVMGGLNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMQQGSQLPCF--H 774
Cdd:cd05168   161 HIDFGFMLSNSPGGLGFETAPFKLTQEYVEVMGGLESDMFRYFKTLMIQGFLALRKHADRIVLLVEIMQQGSKLPCFfgG 240

                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1958752941 775 GSSTIRNLKERFHMSMTEEQLQLLVEQMVDGSMRSITTKLYDGFQYLTNGIM 826
Cdd:cd05168   241 GEFTIEQLRERFKLNLTEEECAQFVDSLIDKSLNNWRTRQYDNFQYLTNGIL 292

Catalytic domain of Type III Phosphoinositide 4-kinase beta; PI4Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 4-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) to generate PtdIns(4)P, the major precursor in the synthesis of other phosphoinositides including PtdIns(4,5)P2, PtdIns(3,4)P2, and PtdIns(3,4,5)P3. Two isoforms of type III PI4K, alpha and beta, exist in most eukaryotes. PI4KIIIbeta (also called Pik1p in yeast) is a 110 kDa protein that is localized to the Golgi and the nucleus. It is required for maintaining the structural integrity of the Golgi complex (GC), and is a key regulator of protein transport from the GC to the plasma membrane. PI4KIIIbeta also functions in the genesis, transport, and exocytosis of synaptic vesicles. The Drosophila PI4KIIIbeta is essential for cytokinesis during spermatogenesis. The PI4K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 539 SAVALKEPWQEKVRRIREGSPYGHLPNWRLLSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSG 618
Cdd:cd05168     1 SAAAFGESWEEKKERIRKSSPYGHLPGWDLRSVIVKSGDDLRQELLAMQLIKQFQRIFEEAGLPLWLRPYEILVTSSDSG 80

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 619 MIEPVVNAVSIHQVKKQSQ--LSLLDYFLQEHGSYTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHII 696
Cdd:cd05168    81 LIETIPDTVSIDSLKKRFPnfTSLLDYFERTFGDPNSERFKEAQRNFVESLAAYSLVCYLLQIKDRHNGNILLDSEGHII 160

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 697 HIDFGFILSSSPRNLGFETSAFKLTTEFVDVMGGLNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMQQGSQLPCF--H 774
Cdd:cd05168   161 HIDFGFMLSNSPGGLGFETAPFKLTQEYVEVMGGLESDMFRYFKTLMIQGFLALRKHADRIVLLVEIMQQGSKLPCFfgG 240

                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1958752941 775 GSSTIRNLKERFHMSMTEEQLQLLVEQMVDGSMRSITTKLYDGFQYLTNGIM 826
Cdd:cd05168   241 GEFTIEQLRERFKLNLTEEECAQFVDSLIDKSLNNWRTRQYDNFQYLTNGIL 292

Phosphatidylinositol kinase or protein kinase, PI-3 family [Signal transduction mechanisms];

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  553 RIREGSPYGHLPNWRLLSVIVKCGDDLRQELLAFQVLKQLQSIW----EQERVPLWIKPYKILVISADSGMIEPVVNAVS 628
Cdd:COG5032   1781 LQRPRRLTIRGSDGKLYSFIVKGGDDLRQDELALQLIRLMNKILkkdkETRRRDLWIRPYKVIPLSPGSGIIEWVPNSDT 1860

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  629 IHQVKK------------QSQL-------------------------SLLDYFLQEHGSYttEAFLSAQRNFVQSCAGYC 671
Cdd:COG5032   1861 LHSILReyhkrknisidqEKKLaarldnlklllkdefftkatlksppVLYDWFSESFPNP--EDWLTARTNFARSLAVYS 1938

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  672 LVCYLLQVKDRHNGNILLD-AEGHIIHIDFGFILSSSPRNLGF-ETSAFKLTTEFVDVMGGLNGDMFnyYKMLMLQGLIA 749
Cdd:COG5032   1939 VIGYILGLGDRHPGNILIDrSSGHVIHIDFGFILFNAPGRFPFpEKVPFRLTRNIVEAMGVSGVEGS--FRELCETAFRA 2016

                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  750 ARKHMDKVVQIVEIMQ-----QGSQLPCFHGSS--TIRNLKERFHMSMTEEQLQLLVEQMVDGSMRSITTKLYDGFQYLT 822
Cdd:COG5032   2017 LRKNADSLMNVLELFVrdpliEWRRLPCFREIQnnEIVNVLERFRLKLSEKDAEKFVDLLINKSVESLITQATDPFQLAT 2096

                   ...
gi 1958752941  823 NGI 825
Cdd:COG5032   2097 MYI 2099

N-terminal domain of phosphatidylinositol 4-kinase beta; Phosphatidylinositol 4-kinase beta (PI4K-beta, PI4Kbeta or PI4KB), also called PtdIns 4-kinase beta, NPIK, PI4K92, or PI4KIII, catalyzes the phosphorylation of phosphatidylinositol (PI) to form phosphatidylinositol 4-phosphate (PI4P), in the first committed step in the production of the second messenger inositol-1,4,5,-trisphosphate (PIP). It may regulate Golgi disintegration/reorganization during mitosis, possibly via its phosphorylation. PI4K-beta is critical for the maintenance of the Golgi and trans Golgi network (TGN) PI4P pools. It is recruited to membranes via its interaction with Golgi adaptor protein acyl-coenzyme A binding domain containing protein 3 (ACBD3). The ACBD3:PI4K-beta complex formation is essential for proper function of the Golgi. PI4K-beta also plays an essential role in Aichi virus RNA replication. It is recruited by ACBD3 at viral replication sites. This model corresponds to the N-terminal domain of PI4K-beta, which is responsible for interacting with ACBD3 by forming a complex with the Q domain.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1958752941  27 GDMVVEPATLKPTSEPTPSPSGNNGGSLLSVITEGVGELSVIDPEVAQKACQEVLEKVKLLHGGV 91
Cdd:cd22246     1 GDTDVEPAPVLLTSEPTSGPPGNGGGGPLSVITEGVGELSVIDPEVAKKACQEVLEKVKLLHGVS 65

Catalytic domain of Type III Phosphoinositide 4-kinase beta; PI4Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 4-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) to generate PtdIns(4)P, the major precursor in the synthesis of other phosphoinositides including PtdIns(4,5)P2, PtdIns(3,4)P2, and PtdIns(3,4,5)P3. Two isoforms of type III PI4K, alpha and beta, exist in most eukaryotes. PI4KIIIbeta (also called Pik1p in yeast) is a 110 kDa protein that is localized to the Golgi and the nucleus. It is required for maintaining the structural integrity of the Golgi complex (GC), and is a key regulator of protein transport from the GC to the plasma membrane. PI4KIIIbeta also functions in the genesis, transport, and exocytosis of synaptic vesicles. The Drosophila PI4KIIIbeta is essential for cytokinesis during spermatogenesis. The PI4K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 539 SAVALKEPWQEKVRRIREGSPYGHLPNWRLLSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSG 618
Cdd:cd05168     1 SAAAFGESWEEKKERIRKSSPYGHLPGWDLRSVIVKSGDDLRQELLAMQLIKQFQRIFEEAGLPLWLRPYEILVTSSDSG 80

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 619 MIEPVVNAVSIHQVKKQSQ--LSLLDYFLQEHGSYTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHII 696
Cdd:cd05168    81 LIETIPDTVSIDSLKKRFPnfTSLLDYFERTFGDPNSERFKEAQRNFVESLAAYSLVCYLLQIKDRHNGNILLDSEGHII 160

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 697 HIDFGFILSSSPRNLGFETSAFKLTTEFVDVMGGLNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMQQGSQLPCF--H 774
Cdd:cd05168   161 HIDFGFMLSNSPGGLGFETAPFKLTQEYVEVMGGLESDMFRYFKTLMIQGFLALRKHADRIVLLVEIMQQGSKLPCFfgG 240

                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|..
gi 1958752941 775 GSSTIRNLKERFHMSMTEEQLQLLVEQMVDGSMRSITTKLYDGFQYLTNGIM 826
Cdd:cd05168   241 GEFTIEQLRERFKLNLTEEECAQFVDSLIDKSLNNWRTRQYDNFQYLTNGIL 292

Catalytic domain of Type III Phosphoinositide 4-kinase alpha; PI4Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 4-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) to generate PtdIns(4)P, the major precursor in the synthesis of other phosphoinositides including PtdIns(4,5)P2, PtdIns(3,4)P2, and PtdIns(3,4,5)P3. Two isoforms of type III PI4K, alpha and beta, exist in most eukaryotes. PI4KIIIalpha is a 220 kDa protein found in the plasma membrane and the endoplasmic reticulum (ER). The role of PI4KIIIalpha in the ER remains unclear. In the plasma membrane, it provides PtdIns(4)P, which is then converted by PI5Ks to PtdIns(4,5)P2, an important signaling molecule. Vertebrate PI4KIIIalpha is also part of a signaling complex associated with P2X7 ion channels. The yeast homolog, Stt4p, is also important in regulating the conversion of phosphatidylserine to phosphatidylethanolamine at the ER and Golgi interface. Mammalian PI4KIIIalpha is highly expressed in the nervous system. The PI4K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 569 LSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQSQLSLLDYFLQEH 648
Cdd:cd05167    50 QAAIFKVGDDCRQDMLALQLISLFKNIFEEVGLDLYLFPYRVVATGPGCGVIEVIPNSKSRDQIGRETDNGLYEYFLSKY 129

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 649 GSYTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSP-RNLGFETSAFKLTTEFVDV 727
Cdd:cd05167   130 GDESTPAFQKARRNFIKSMAGYSLVSYLLQIKDRHNGNIMIDDDGHIIHIDFGFIFEISPgGNLGFESAPFKLTKEMVDL 209

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 728 MGG-LNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMqQGSQLPCFHGsSTIRNLKERFHMSMTEEQLQLLVEQMVDGS 806
Cdd:cd05167   210 MGGsMESEPFKWFVELCVRGYLAVRPYAEAIVSLVELM-LDSGLPCFRG-QTIKNLRERFALEMSEREAANFMIKLIADS 287

                         250       260
                  ....*....|....*....|
gi 1958752941 807 MRSITTKLYDGFQYLTNGIM 826
Cdd:cd05167   288 YLKIRTKGYDMFQYYQNGIP 307

Phosphoinositide 3-kinase, catalytic domain; Phosphoinositide 3-kinase isoforms participate in a variety of processes, including cell motility, the Ras pathway, vesicle trafficking and secretion, and apoptosis. These homologues may be either lipid kinases and/or protein kinases: the former phosphorylate the 3-position in the inositol ring of inositol phospholipids. The ataxia telangiectesia-mutated gene produced, the targets of rapamycin (TOR) and the DNA-dependent kinase have not been found to possess lipid kinase activity. Some of this family possess PI-4 kinase activities.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  571 VIVKCGDDLRQELLAFQVLKQLQSIWEQE----RVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQS---------- 636
Cdd:smart00146   1 VIFKGGDDLRQDERVLQLLRLMNKLLQKDketrRRDLHLRPYKVIPTGPKSGLIEVVPNSTTLHEILKEYrkqkgkvldl 80

                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  637 ----------------------QLSLLDYFLQEHGSYTtEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGH 694
Cdd:smart00146  81 rsqtatrlkklelfleatgkfpDPVLYDWFTKKFPDPS-EDYFEARKNFTRSCAGYSVITYILGLGDRHNDNIMLDKTGH 159

                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941  695 IIHIDFGFILSSSPRNLGF-ETSAFKLTTEFVDVMGglNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMqQGSQLPCF 773
Cdd:smart00146 160 LFHIDFGFILGNGPKLFGFpERVPFRLTPEMVDVMG--DSGYFGLFRSLCERALRALRKNSNLIMSLLELM-LYDGLPDW 236

                   ...
gi 1958752941  774 HGS 776
Cdd:smart00146 237 RSG 239

Catalytic domain of Class III Phosphoinositide 3-kinase; PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. Class III PI3Ks, also called Vps34 (vacuolar protein sorting 34), contain an N-terminal lipid binding C2 domain, a PI3K homology domain of unknown function, and a C-terminal ATP-binding cataytic domain. They phosphorylate only the substrate PtdIns. They interact with a regulatory subunit, Vps15, to form a membrane-associated complex. Class III PI3Ks are involved in protein and vesicular trafficking and sorting, autophagy, trimeric G-protein signaling, and phagocytosis. PI3Ks play an important role in a variety of fundamental cellular processes, including cell motility, the Ras pathway, vesicle trafficking and secretion, immune cell activation and apoptosis. They can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 570 SVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQsQLSLLDYFLQEHG 649
Cdd:cd00896    94 KVIFKHGDDLRQDQLVLQIITLMDRLLKKENLDLKLTPYKVLATSPNDGLVEFVPNSKALADILKK-YGSILNFLRKHNP 172

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 650 SYTTEAFLSAQ--RNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSPRNLgfeTSAFKLTTEFVDV 727
Cdd:cd00896   173 DESGPYGIKPEvmDNFVKSCAGYCVITYILGVGDRHLDNLLLTKDGHLFHIDFGYILGRDPKPF---PPPMKLCKEMVEA 249

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 728 MGGLNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMqQGSQLPCFHGSS--TIRNLKERFHMSMTEEQLQLLVEQMVDG 805
Cdd:cd00896   250 MGGANSEGYKEFKKYCCTAYNILRKHANLILNLFSLM-VDANIPDIALEPdkAVLKVQEKFRLDLSDEEAEQYFQNLIDE 328

                         250
                  ....*....|.
gi 1958752941 806 SMRSITTKLYD 816
Cdd:cd00896   329 SVNALFPAVVE 339

Phosphatidylinositol 3- and 4-kinase; Some members of this family probably do not have lipid kinase activity and are protein kinases,.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 570 SVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLW-IKPYKILVISADSGMIEPVVNAVSIHQ----------------- 631
Cdd:pfam00454   3 GGIYKVGDDLRQDELILQVFKLMDEELSKDNLDLRrLKPYSVIPLGPKCGIIEWVPNSETLAYildeygengvpptamvk 82

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 632 ------------VKKQSQLS------LLDYFLQEHGSYttEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAE- 692
Cdd:pfam00454  83 ilhsalnypklkLEFESRISlppkvgLLQWFVKKSPDA--EEWGEARKNFVRSCAGYSVLDYILGNGDRHLDNILVDKTt 160

                         170       180       190       200       210       220       230
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 1958752941 693 GHIIHIDFGFILSSSPRNLGF-ETSAFKLTTEFVDVMGglNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIM 764
Cdd:pfam00454 161 GKLFHIDFGLCLPDAGKDLPFpEKVPFRLTREMVYAMG--PSGDEGLFRELCETAYEALRRNLNLLTNLLKLM 231

Catalytic domain of Class II Phosphoinositide 3-kinase; PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. PI3Ks play an important role in a variety of fundamental cellular processes, including cell motility, the Ras pathway, vesicle trafficking and secretion, immune cell activation and apoptosis. They can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class II PI3Ks preferentially use PtdIns as a substrate to produce PtdIns(3)P, but can also phosphorylate PtdIns(4)P. They function as monomers and do not associate with any regulatory subunits. Class II enzymes contain an N-terminal Ras binding domain, a lipid binding C2 domain, a PI3K homology domain of unknown function, an ATP-binding cataytic domain, a Phox homology (PX) domain, and a second C2 domain at the C-terminus. They are activated by a variety of stimuli including chemokines, cytokines, lysophosphatidic acid (LPA), insulin, and tyrosine kinase receptors. The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 569 LSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQSQL------SLLD 642
Cdd:cd05166    91 ISVIFKVGDDLRQDMLTLQLIRIMDKIWLQEGLDLKMITFRCVPTGNKRGMVELVPEAETLREIQTEHGLtgsfkdRPLA 170

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 643 YFLQEHGSyTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSPRNLGF--ETSAFKL 720
Cdd:cd05166   171 DWLQKHNP-SELEYEKAVENFIRSCAGYCVATYVLGICDRHNDNIMLKTSGHLFHIDFGKFLGDAQMFGNFkrDRVPFVL 249

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 721 TTEFVDVMGGlnGDM----FNYYKMLMLQGLIAARKHMDKVVQIVEIMQQgSQLPCFhGSSTIRNLKERFHMSMTEEQLQ 796
Cdd:cd05166   250 TSDMAYVING--GDKpssrFQLFVDLCCQAFNIIRKNSNLLLNLLSLMLS-SGIPGV-TQDDLRYVQDALLPELTDAEAT 325

                         250
                  ....*....|....*...
gi 1958752941 797 LLVEQMVDGSMRSITTKL 814
Cdd:cd05166   326 AHFTRMIEESLSSKFTQL 343

Catalytic domain of Class IB Phosphoinositide 3-kinase gamma; PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. PI3Kgamma signaling controls diverse immune and vascular functions including cell recruitment, mast cell activation, platelet aggregation, and smooth muscle contractility. It associates with one of two regulatory subunits, p101 and p84, and is activated by G-protein-coupled receptors (GPCRs) by direct binding to their betagamma subunits. It contains an N-terminal Ras binding domain, a lipid binding C2 domain, a PI3K homology domain of unknown function, and a C-terminal ATP-binding cataytic domain. PI3Ks can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class I PI3Ks are the only enzymes capable of converting PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. Class I enzymes are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. They are further classified into class IA (alpha, beta and delta) and IB (gamma). The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 569 LSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKkQSQL--------SL 640
Cdd:cd00894   100 IGIIFKHGDDLRQDMLILQILRIMESIWETESLDLCLLPYGCISTGDKIGMIEIVKDATTIAKIQ-QSTVgntgafkdEV 178

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 641 LDYFLQEHGSYTtEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSPRNLGF--ETSAF 718
Cdd:cd00894   179 LNHWLKEKCPIE-EKFQAAVERFVYSCAGYCVATFVLGIGDRHNDNIMITETGNLFHIDFGHILGNYKSFLGInkERVPF 257

                         170       180       190       200       210       220       230
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1958752941 719 KLTTEFVDVMGGLNGDM---FNYYKMLMLQGLIAARKHMDKVVQIVEIMQQgSQLPCFHGSSTIRNLKERFHMSMTEEQ 794
Cdd:cd00894   258 VLTPDFLFVMGTSGKKTslhFQKFQDVCVKAYLALRHHTNLLIILFSMMLM-TGMPQLTSKEDIEYIRDALTVGKSEED 335

Catalytic domain of Class IA Phosphoinositide 3-kinase beta; PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. PI3Kbeta can be activated by G-protein-coupled receptors. Deletion of PI3Kbeta in mice results in early lethality at around day three of development. PI3Kbeta plays an important role in regulating sustained integrin activation and stable platelet agrregation, especially under conditions of high shear stress. PI3Ks can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class I PI3Ks are the only enzymes capable of converting PtdIns(4,5)P2 to the critical second messenger PtdIns(3,4,5)P3. Class I enzymes are heterodimers and exist in multiple isoforms consisting of one catalytic subunit (out of four isoforms) and one of several regulatory subunits. They are further classified into class IA (alpha, beta and delta) and IB (gamma). Class IA enzymes contain an N-terminal p85 binding domain, a Ras binding domain, a lipid binding C2 domain, a PI3K homology domain of unknown function, and a C-terminal ATP-binding cataytic domain. They associate with a regulatory subunit of the p85 family and are activated by tyrosine kinase receptors. The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 568 LLSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQS----------Q 637
Cdd:cd05173    94 SLGIIFKNGDDLRQDMLTLQILRLMDTLWKEAGLDLRIVPYGCLATGDRSGLIEVVSSAETIADIQLNSsnvaaaaafnK 173

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 638 LSLLDYfLQEHGSytTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSPRNLGF--ET 715
Cdd:cd05173   174 DALLNW-LKEYNS--GDDLERAIEEFTLSCAGYCVATYVLGIGDRHSDNIMVRKNGQLFHIDFGHILGNFKSKFGIkrER 250

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 716 SAFKLTTEFVDVM---GGLNGDMFNYYKMLMLQGLIAARKHMDKVVQIVEIMQQGSqLPCFHGSSTIRNLKERFHMSMTE 792
Cdd:cd05173   251 VPFILTYDFIHVIqqgKTGNTEKFGRFRQYCEDAYLILRKNGNLFITLFALMLTAG-LPELTSVKDIQYLKDSLALGKSE 329

                         250       260
                  ....*....|....*....|...
gi 1958752941 793 EQLQLLVEQMVDGSMR-SITTKL 814
Cdd:cd05173   330 EEALKQFRQKFDEALReSWTTKV 352

Catalytic domain of Class II Phosphoinositide 3-kinase alpha; PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. The class II alpha isoform, PI3K-C2alpha, plays key roles in clathrin assembly and clathrin-mediated membrane trafficking, insulin signaling, vascular smooth muscle contraction, and the priming of neurosecretory granule exocytosis. PI3Ks play an important role in a variety of fundamental cellular processes, including cell motility, the Ras pathway, vesicle trafficking and secretion, immune cell activation and apoptosis. They can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class II PI3Ks preferentially use PtdIns as a substrate to produce PtdIns(3)P, but can also phosphorylate PtdIns(4)P. They function as monomers and do not associate with any regulatory subunits. Class II enzymes contain an N-terminal Ras binding domain, a lipid binding C2 domain, a PI3K homology domain of unknown function, an ATP-binding cataytic domain, a Phox homology (PX) domain, and a second C2 domain at the C-terminus. The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 569 LSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQSQL--SLLDYFLQ 646
Cdd:cd05176    91 INVMFKVGEDLRQDMLALQMIKIMDKIWLQEGLDLRMVIFKCLSTGKDRGMVELVPSSDTLRKIQVEYGVtgSFKDKPLA 170

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 647 E---HGSYTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSPRNLGF--ETSAFKLT 721
Cdd:cd05176   171 EwlrKYNPSEEEYEKASENFIYSCAGCCVATYVLGICDRHNDNIMLRSTGHMFHIDFGKFLGHAQMFGSFkrDRAPFVLT 250

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 722 TEFVDVMGGlnGDM----FNYYKMLMLQGLIAARKHMDKVVQIVEIMQQgSQLPCFHGSSTIRNLKERFHMSMTEEQLQL 797
Cdd:cd05176   251 SDMAYVING--GEKptirFQLFVDLCCQAYNLIRKHTNLFLNLLSLMLS-SGLPELTGIQDLKYVFDALQPQTTDAEATI 327

                         250
                  ....*....|....*..
gi 1958752941 798 LVEQMVDGSMRSITTKL 814
Cdd:cd05176   328 FFTRLIESSLGSVATKF 344

Catalytic domain of Class II Phosphoinositide 3-kinase beta; PI3Ks catalyze the transfer of the gamma-phosphoryl group from ATP to the 3-hydroxyl of the inositol ring of D-myo-phosphatidylinositol (PtdIns) or its derivatives. The class II beta isoform, PI3K-C2beta, contributes to the migration and survival of cancer cells. It regulates Rac activity and impacts membrane ruffling, cell motility, and cadherin-mediated cell-cell adhesion. PI3Ks play an important role in a variety of fundamental cellular processes, including cell motility, the Ras pathway, vesicle trafficking and secretion, immune cell activation and apoptosis. They can be divided into three main classes (I, II, and III), defined by their substrate specificity, regulation, and domain structure. Class II PI3Ks preferentially use PtdIns as a substrate to produce PtdIns(3)P, but can also phosphorylate PtdIns(4)P. They function as monomers and do not associate with any regulatory subunits. Class II enzymes contain an N-terminal Ras binding domain, a lipid binding C2 domain, a PI3K homology domain of unknown function, an ATP-binding cataytic domain, a Phox homology (PX) domain, and a second C2 domain at the C-terminus. The PI3K catalytic domain family is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 569 LSVIVKCGDDLRQELLAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQSQLS-------LL 641
Cdd:cd00895    92 IRVIFKCGDDLRQDMLTLQMIRIMNKIWVQEGLDMRMVIFRCFSTGRGRGMVEMIPNAETLRKIQVEHGVTgsfkdrpLA 171

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 642 DYfLQEHGSyTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAEGHIIHIDFGFILSSSPR--NLGFETSAFK 719
Cdd:cd00895   172 DW-LQKHNP-TEDEYEKAVENFIYSCAGCCVATYVLGICDRHNDNIMLKTTGHMFHIDFGRFLGHAQMfgNIKRDRAPFV 249

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 720 LTTEFVDVMGGlnGDM----FNYYKMLMLQGLIAARKHMDKVVQIVEIMQQgSQLPCFHGSSTIRNLKERFHMSMTEEQL 795
Cdd:cd00895   250 FTSDMAYVING--GDKpssrFHDFVDLCCQAYNLIRKHTHLFLNLLGLMLS-CGIPELSDLEDLKYVYDALRPQDTEADA 326

                         250
                  ....*....|....*....
gi 1958752941 796 QLLVEQMVDGSMRSITTKL 814
Cdd:cd00895   327 TTYFTRLIESSLGSVATKL 345

Catalytic domain of DNA-dependent protein kinase; DNA-PK is comprised of a regulatory subunit, containing the Ku70/80 subunit, and a catalytic subunit, which contains a NUC194 domain of unknown function, a FAT (FRAP, ATM and TRRAP) domain, a catalytic domain, and a FATC domain at the C-terminus. It is part of a multi-component system involved in non-homologous end joining (NHEJ), a process of repairing double strand breaks (DSBs) by joining together two free DNA ends of little homology. DNA-PK functions as a molecular sensor for DNA damage that enhances the signal via phosphorylation of downstream targets. It may also act as a protein scaffold that aids the localization of DNA repair proteins to the site of DNA damage. DNA-PK also plays a role in the maintenance of telomeric stability and the prevention of chromosomal end fusion. DNA-PK is a member of the phosphoinositide 3-kinase-related protein kinase (PIKK) subfamily. PIKKs have intrinsic serine/threonine kinase activity and are distinguished from other PKs by their unique catalytic domain, similar to that of lipid PI3K, and their large molecular weight (240-470 kDa). The DNA-PK catalytic domain subfamily is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 572 IVKCGDDLR-----QELLAF--QVLKQLQSIWEQErvpLWIKPYKILVISADSGMIEPVVNAVSIHQVKKQSqlsLLDYF 644
Cdd:cd05172    33 LVKGGEDLRqdqriQQLFDVmnNILASDPACRQRR---LRIRTYQVIPMTSRLGLIEWVDNTTPLKEILEND---LLRRA 106

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 645 LQEHGSyTTEAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLD-AEGHIIHIDFGFILSSSPRNLGF-ETSAFKLTT 722
Cdd:cd05172   107 LLSLAS-SPEAFLALRSNFARSLAAMSICGYILGIGDRHLSNFLVDlSTGRLIGIDFGHAFGSATQFLPIpELVPFRLTR 185

                         170       180       190
                  ....*....|....*....|....*....|.
gi 1958752941 723 EFVDVMGGLNGDmfNYYKMLMLQGLIAARKH 753
Cdd:cd05172   186 QLLNLLQPLDAR--GLLRSDMVHVLRALRAG 214

Catalytic domain of Ataxia telangiectasia and Rad3-related proteins; ATR is also referred to as Mei-41 (Drosophila), Esr1/Mec1p (Saccharomyces cerevisiae), Rad3 (Schizosaccharomyces pombe), and FRAP-related protein (human). ATR contains a UME domain of unknown function, a FAT (FRAP, ATM and TRRAP) domain, a catalytic domain, and a FATC domain at the C-terminus. Together with its downstream effector kinase, Chk1, ATR plays a central role in regulating the replication checkpoint. ATR stabilizes replication forks by promoting the association of DNA polymerases with the fork. Preventing fork collapse is essential in preserving genomic integrity. ATR also plays a role in normal cell growth and in response to DNA damage. ATR is a member of the phosphoinositide 3-kinase-related protein kinase (PIKK) subfamily. PIKKs have intrinsic serine/threonine kinase activity and are distinguished from other PKs by their unique catalytic domain, similar to that of lipid PI3K, and their large molecular weight (240-470 kDa). The ATR catalytic domain subfamily is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 567 RLLSVIVKCGDDLRQEL----LAFQVLKQLQSIWEQERVPLWIKPYKILVISADSGMIEPVVNAVSI-HQVKKQSQLSLL 641
Cdd:cd00892    28 KKYPFLCKPKDDLRKDArmmeFNTLINRLLSKDPESRRRNLHIRTYAVIPLNEECGIIEWVPNTVTLrSILSTLYPPVLH 107

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958752941 642 DYFLQEHGSYTteAFLSAQRNFVQSCAGYCLVCYLLQVKDRHNGNILLDAE-GHIIHIDF------GFILsSSPrnlgfE 714
Cdd:cd00892   108 EWFLKNFPDPT--AWYEARNNYTRSTAVMSMVGYILGLGDRHGENILFDSTtGDVVHVDFdclfdkGLTL-EVP-----E 179

                         170
                  ....*....|....*
gi 1958752941 715 TSAFKLTTEFVDVMG 729
Cdd:cd00892   180 RVPFRLTQNMVDAMG 194

Catalytic domain of Target of Rapamycin; TOR contains a rapamycin binding domain, a catalytic domain, and a FATC (FRAP, ATM and TRRAP, C-terminal) domain at the C-terminus. It is also called FRAP (FK506 binding protein 12-rapamycin associated protein). TOR is a central component of the eukaryotic growth regulatory network. It controls the expression of many genes transcribed by all three RNA polymerases. It associates with other proteins to form two distinct complexes, TORC1 and TORC2. TORC1 is involved in diverse growth-related functions including protein synthesis, nutrient use and transport, autophagy and stress responses. TORC2 is involved in organizing cytoskeletal structures. TOR is a member of the phosphoinositide 3-kinase-related protein kinase (PIKK) subfamily. PIKKs have intrinsic serine/threonine kinase activity and are distinguished from other PKs by their unique catalytic domain, similar to that of lipid PI3K, and their large molecular weight (240-470 kDa). The TOR catalytic domain subfamily is part of a larger superfamily that includes the catalytic domains of other kinases such as the typical serine/threonine/tyrosine protein kinases (PKs), aminoglycoside phosphotransferase, choline kinase, and RIO kinases.