septin 1, isoform CRA_b [Homo sapiens]
Protein Classification
septin family protein( domain architecture ID 11107662)
septin family protein, a filament-forming cytoskeletal GTPase, is involved in various cellular processes, including cytoskeleton organization, cytokinesis, and membrane dynamics
List of domain hits
| Name | Accession | Description | Interval | E-value | |||||
| Septin | pfam00735 | Septin; Members of this family include CDC3, CDC10, CDC11 and CDC12/Septin. Members of this ... |
1-263 | 1.63e-165 | |||||
Septin; Members of this family include CDC3, CDC10, CDC11 and CDC12/Septin. Members of this family bind GTP. As regards the septins, these are polypeptides of 30-65kDa with three characteriztic GTPase motifs (G-1, G-3 and G-4) that are similar to those of the Ras family. The G-4 motif is strictly conserved with a unique septin consensus of AKAD. Most septins are thought to have at least one coiled-coil region, which in some cases is necessary for intermolecular interactions that allow septins to polymerize to form rod-shaped complexes. In turn, these are arranged into tandem arrays to form filaments. They are multifunctional proteins, with roles in cytokinesis, sporulation, germ cell development, exocytosis and apoptosis. : Pssm-ID: 395596 Cd Length: 272 Bit Score: 459.84 E-value: 1.63e-165
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| Name | Accession | Description | Interval | E-value | |||||
| Septin | pfam00735 | Septin; Members of this family include CDC3, CDC10, CDC11 and CDC12/Septin. Members of this ... |
1-263 | 1.63e-165 | |||||
Septin; Members of this family include CDC3, CDC10, CDC11 and CDC12/Septin. Members of this family bind GTP. As regards the septins, these are polypeptides of 30-65kDa with three characteriztic GTPase motifs (G-1, G-3 and G-4) that are similar to those of the Ras family. The G-4 motif is strictly conserved with a unique septin consensus of AKAD. Most septins are thought to have at least one coiled-coil region, which in some cases is necessary for intermolecular interactions that allow septins to polymerize to form rod-shaped complexes. In turn, these are arranged into tandem arrays to form filaments. They are multifunctional proteins, with roles in cytokinesis, sporulation, germ cell development, exocytosis and apoptosis. Pssm-ID: 395596 Cd Length: 272 Bit Score: 459.84 E-value: 1.63e-165
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| CDC_Septin | cd01850 | CDC/Septin GTPase family; Septins are a conserved family of GTP-binding proteins associated ... |
1-263 | 2.16e-151 | |||||
CDC/Septin GTPase family; Septins are a conserved family of GTP-binding proteins associated with diverse processes in dividing and non-dividing cells. They were first discovered in the budding yeast S. cerevisiae as a set of genes (CDC3, CDC10, CDC11 and CDC12) required for normal bud morphology. Septins are also present in metazoan cells, where they are required for cytokinesis in some systems, and implicated in a variety of other processes involving organization of the cell cortex and exocytosis. In humans, 12 septin genes generate dozens of polypeptides, many of which comprise heterooligomeric complexes. Since septin mutants are commonly defective in cytokinesis and formation of the neck formation of the neck filaments/septin rings, septins have been considered to be the primary constituents of the neck filaments. Septins belong to the GTPase superfamily for their conserved GTPase motifs and enzymatic activities. Pssm-ID: 206649 Cd Length: 275 Bit Score: 424.27 E-value: 2.16e-151
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| CDC3 | COG5019 | Septin family protein [Cell cycle control, cell division, chromosome partitioning, ... |
1-265 | 1.11e-110 | |||||
Septin family protein [Cell cycle control, cell division, chromosome partitioning, Cytoskeleton]; Pssm-ID: 227352 [Multi-domain] Cd Length: 373 Bit Score: 324.66 E-value: 1.11e-110
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| small_GTP | TIGR00231 | small GTP-binding protein domain; Proteins with a small GTP-binding domain recognized by this ... |
2-64 | 2.06e-04 | |||||
small GTP-binding protein domain; Proteins with a small GTP-binding domain recognized by this model include Ras, RhoA, Rab11, translation elongation factor G, translation initiation factor IF-2, tetratcycline resistance protein TetM, CDC42, Era, ADP-ribosylation factors, tdhF, and many others. In some proteins the domain occurs more than once.This model recognizes a large number of small GTP-binding proteins and related domains in larger proteins. Note that the alpha chains of heterotrimeric G proteins are larger proteins in which the NKXD motif is separated from the GxxxxGK[ST] motif (P-loop) by a long insert and are not easily detected by this model. [Unknown function, General] Pssm-ID: 272973 [Multi-domain] Cd Length: 162 Bit Score: 40.82 E-value: 2.06e-04
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| PRK00098 | PRK00098 | GTPase RsgA; Reviewed |
1-65 | 1.52e-03 | |||||
GTPase RsgA; Reviewed Pssm-ID: 234631 [Multi-domain] Cd Length: 298 Bit Score: 39.42 E-value: 1.52e-03
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| RAB | smart00175 | Rab subfamily of small GTPases; Rab GTPases are implicated in vesicle trafficking. |
1-64 | 6.33e-03 | |||||
Rab subfamily of small GTPases; Rab GTPases are implicated in vesicle trafficking. Pssm-ID: 197555 [Multi-domain] Cd Length: 164 Bit Score: 36.72 E-value: 6.33e-03
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| Name | Accession | Description | Interval | E-value | |||||
| Septin | pfam00735 | Septin; Members of this family include CDC3, CDC10, CDC11 and CDC12/Septin. Members of this ... |
1-263 | 1.63e-165 | |||||
Septin; Members of this family include CDC3, CDC10, CDC11 and CDC12/Septin. Members of this family bind GTP. As regards the septins, these are polypeptides of 30-65kDa with three characteriztic GTPase motifs (G-1, G-3 and G-4) that are similar to those of the Ras family. The G-4 motif is strictly conserved with a unique septin consensus of AKAD. Most septins are thought to have at least one coiled-coil region, which in some cases is necessary for intermolecular interactions that allow septins to polymerize to form rod-shaped complexes. In turn, these are arranged into tandem arrays to form filaments. They are multifunctional proteins, with roles in cytokinesis, sporulation, germ cell development, exocytosis and apoptosis. Pssm-ID: 395596 Cd Length: 272 Bit Score: 459.84 E-value: 1.63e-165
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| CDC_Septin | cd01850 | CDC/Septin GTPase family; Septins are a conserved family of GTP-binding proteins associated ... |
1-263 | 2.16e-151 | |||||
CDC/Septin GTPase family; Septins are a conserved family of GTP-binding proteins associated with diverse processes in dividing and non-dividing cells. They were first discovered in the budding yeast S. cerevisiae as a set of genes (CDC3, CDC10, CDC11 and CDC12) required for normal bud morphology. Septins are also present in metazoan cells, where they are required for cytokinesis in some systems, and implicated in a variety of other processes involving organization of the cell cortex and exocytosis. In humans, 12 septin genes generate dozens of polypeptides, many of which comprise heterooligomeric complexes. Since septin mutants are commonly defective in cytokinesis and formation of the neck formation of the neck filaments/septin rings, septins have been considered to be the primary constituents of the neck filaments. Septins belong to the GTPase superfamily for their conserved GTPase motifs and enzymatic activities. Pssm-ID: 206649 Cd Length: 275 Bit Score: 424.27 E-value: 2.16e-151
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| CDC3 | COG5019 | Septin family protein [Cell cycle control, cell division, chromosome partitioning, ... |
1-265 | 1.11e-110 | |||||
Septin family protein [Cell cycle control, cell division, chromosome partitioning, Cytoskeleton]; Pssm-ID: 227352 [Multi-domain] Cd Length: 373 Bit Score: 324.66 E-value: 1.11e-110
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| Ras_like_GTPase | cd00882 | Rat sarcoma (Ras)-like superfamily of small guanosine triphosphatases (GTPases); Ras-like ... |
2-171 | 2.69e-09 | |||||
Rat sarcoma (Ras)-like superfamily of small guanosine triphosphatases (GTPases); Ras-like GTPase superfamily. The Ras-like superfamily of small GTPases consists of several families with an extremely high degree of structural and functional similarity. The Ras superfamily is divided into at least four families in eukaryotes: the Ras, Rho, Rab, and Sar1/Arf families. This superfamily also includes proteins like the GTP translation factors, Era-like GTPases, and G-alpha chain of the heterotrimeric G proteins. Members of the Ras superfamily regulate a wide variety of cellular functions: the Ras family regulates gene expression, the Rho family regulates cytoskeletal reorganization and gene expression, the Rab and Sar1/Arf families regulate vesicle trafficking, and the Ran family regulates nucleocytoplasmic transport and microtubule organization. The GTP translation factor family regulates initiation, elongation, termination, and release in translation, and the Era-like GTPase family regulates cell division, sporulation, and DNA replication. Members of the Ras superfamily are identified by the GTP binding site, which is made up of five characteristic sequence motifs, and the switch I and switch II regions. Pssm-ID: 206648 [Multi-domain] Cd Length: 161 Bit Score: 55.16 E-value: 2.69e-09
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| YihA_EngB | cd01876 | YihA (EngB) GTPase family; The YihA (EngB) subfamily of GTPases is typified by the E. coli ... |
3-174 | 2.94e-09 | |||||
YihA (EngB) GTPase family; The YihA (EngB) subfamily of GTPases is typified by the E. coli YihA, an essential protein involved in cell division control. YihA and its orthologs are small proteins that typically contain less than 200 amino acid residues and consists of the GTPase domain only (some of the eukaryotic homologs contain an N-terminal extension of about 120 residues that might be involved in organellar targeting). Homologs of yihA are found in most Gram-positive and Gram-negative pathogenic bacteria, with the exception of Mycobacterium tuberculosis. The broad-spectrum nature of YihA and its essentiality for cell viability in bacteria make it an attractive antibacterial target. Pssm-ID: 206665 [Multi-domain] Cd Length: 170 Bit Score: 55.21 E-value: 2.94e-09
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| YeeP | COG3596 | Predicted GTPase [General function prediction only]; |
1-175 | 1.27e-08 | |||||
Predicted GTPase [General function prediction only]; Pssm-ID: 442815 [Multi-domain] Cd Length: 318 Bit Score: 55.16 E-value: 1.27e-08
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| YfjP | cd11383 | YfjP GTPase; The Era (E. coli Ras-like protein)-like YfjP subfamily includes several ... |
3-68 | 1.96e-05 | |||||
YfjP GTPase; The Era (E. coli Ras-like protein)-like YfjP subfamily includes several uncharacterized bacterial GTPases that are similar to Era. They generally show sequence conservation in the region between the Walker A and B motifs (G1 and G3 box motifs), to the exclusion of other GTPases. Era is characterized by a distinct derivative of the KH domain (the pseudo-KH domain) which is located C-terminal to the GTPase domain. Pssm-ID: 206743 [Multi-domain] Cd Length: 140 Bit Score: 43.48 E-value: 1.96e-05
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| Toc34_like | cd01853 | Translocon at the Outer-envelope membrane of Chloroplasts 34-like (Toc34-like); The Toc34-like ... |
1-70 | 2.07e-05 | |||||
Translocon at the Outer-envelope membrane of Chloroplasts 34-like (Toc34-like); The Toc34-like (Translocon at the Outer-envelope membrane of Chloroplasts) family contains several Toc proteins, including Toc34, Toc33, Toc120, Toc159, Toc86, Toc125, and Toc90. The Toc complex at the outer envelope membrane of chloroplasts is a molecular machine of ~500 kDa that contains a single Toc159 protein, four Toc75 molecules, and four or five copies of Toc34. Toc64 and Toc12 are associated with the translocon, but do not appear to be part of the core complex. The Toc translocon initiates the import of nuclear-encoded preproteins from the cytosol into the organelle. Toc34 and Toc159 are both GTPases, while Toc75 is a beta-barrel integral membrane protein. Toc159 is equally distributed between a soluble cytoplasmic form and a membrane-inserted form, suggesting that assembly of the Toc complex is dynamic. Toc34 and Toc75 act sequentially to mediate docking and insertion of Toc159 resulting in assembly of the functional translocon. Pssm-ID: 206652 Cd Length: 248 Bit Score: 45.00 E-value: 2.07e-05
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| RsgA_GTPase | pfam03193 | RsgA GTPase; RsgA (also known as EngC and YjeQ) represents a protein family whose members are ... |
2-65 | 1.57e-04 | |||||
RsgA GTPase; RsgA (also known as EngC and YjeQ) represents a protein family whose members are broadly conserved in bacteria and are indispensable for growth. The GTPase domain of RsgA is very similar to several P-loop GTPases, but differs in having a circular permutation of the GTPase structure described by a G4-G1-G3 pattern. Pssm-ID: 427191 [Multi-domain] Cd Length: 174 Bit Score: 41.37 E-value: 1.57e-04
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| small_GTP | TIGR00231 | small GTP-binding protein domain; Proteins with a small GTP-binding domain recognized by this ... |
2-64 | 2.06e-04 | |||||
small GTP-binding protein domain; Proteins with a small GTP-binding domain recognized by this model include Ras, RhoA, Rab11, translation elongation factor G, translation initiation factor IF-2, tetratcycline resistance protein TetM, CDC42, Era, ADP-ribosylation factors, tdhF, and many others. In some proteins the domain occurs more than once.This model recognizes a large number of small GTP-binding proteins and related domains in larger proteins. Note that the alpha chains of heterotrimeric G proteins are larger proteins in which the NKXD motif is separated from the GxxxxGK[ST] motif (P-loop) by a long insert and are not easily detected by this model. [Unknown function, General] Pssm-ID: 272973 [Multi-domain] Cd Length: 162 Bit Score: 40.82 E-value: 2.06e-04
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| YjeQ_EngC | cd01854 | Ribosomal interacting GTPase YjeQ/EngC, a circularly permuted subfamily of the Ras GTPases; ... |
2-65 | 2.57e-04 | |||||
Ribosomal interacting GTPase YjeQ/EngC, a circularly permuted subfamily of the Ras GTPases; YjeQ (YloQ in Bacillus subtilis) is a ribosomal small subunit-dependent GTPase; hence also known as RsgA. YjeQ is a late-stage ribosomal biogenesis factor involved in the 30S subunit maturation, and it represents a protein family whose members are broadly conserved in bacteria and have been shown to be essential to the growth of E. coli and B. subtilis. Proteins of the YjeQ family contain all sequence motifs typical of the vast class of P-loop-containing GTPases, but show a circular permutation, with a G4-G1-G3 pattern of motifs as opposed to the regular G1-G3-G4 pattern seen in most GTPases. All YjeQ family proteins display a unique domain architecture, which includes an N-terminal OB-fold RNA-binding domain, the central permuted GTPase domain, and a zinc knuckle-like C-terminal cysteine domain. Pssm-ID: 206747 [Multi-domain] Cd Length: 211 Bit Score: 41.23 E-value: 2.57e-04
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| Era_like | cd00880 | E. coli Ras-like protein (Era)-like GTPase; The Era (E. coli Ras-like protein)-like family ... |
2-70 | 3.78e-04 | |||||
E. coli Ras-like protein (Era)-like GTPase; The Era (E. coli Ras-like protein)-like family includes several distinct subfamilies (TrmE/ThdF, FeoB, YihA (EngB), Era, and EngA/YfgK) that generally show sequence conservation in the region between the Walker A and B motifs (G1 and G3 box motifs), to the exclusion of other GTPases. TrmE is ubiquitous in bacteria and is a widespread mitochondrial protein in eukaryotes, but is absent from archaea. The yeast member of TrmE family, MSS1, is involved in mitochondrial translation; bacterial members are often present in translation-related operons. FeoB represents an unusual adaptation of GTPases for high-affinity iron (II) transport. YihA (EngB) family of GTPases is typified by the E. coli YihA, which is an essential protein involved in cell division control. Era is characterized by a distinct derivative of the KH domain (the pseudo-KH domain) which is located C-terminal to the GTPase domain. EngA and its orthologs are composed of two GTPase domains and, since the sequences of the two domains are more similar to each other than to other GTPases, it is likely that an ancient gene duplication, rather than a fusion of evolutionarily distinct GTPases, gave rise to this family. Pssm-ID: 206646 [Multi-domain] Cd Length: 161 Bit Score: 40.31 E-value: 3.78e-04
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| MMR_HSR1 | pfam01926 | 50S ribosome-binding GTPase; The full-length GTPase protein is required for the complete ... |
1-65 | 4.46e-04 | |||||
50S ribosome-binding GTPase; The full-length GTPase protein is required for the complete activity of the protein of interacting with the 50S ribosome and binding of both adenine and guanine nucleotides, with a preference for guanine nucleotide. Pssm-ID: 460387 [Multi-domain] Cd Length: 113 Bit Score: 39.14 E-value: 4.46e-04
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| RsgA | COG1162 | Ribosome biogenesis GTPase RsgA [Translation, ribosomal structure and biogenesis]; |
1-65 | 1.38e-03 | |||||
Ribosome biogenesis GTPase RsgA [Translation, ribosomal structure and biogenesis]; Pssm-ID: 440776 [Multi-domain] Cd Length: 300 Bit Score: 39.71 E-value: 1.38e-03
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| PRK00098 | PRK00098 | GTPase RsgA; Reviewed |
1-65 | 1.52e-03 | |||||
GTPase RsgA; Reviewed Pssm-ID: 234631 [Multi-domain] Cd Length: 298 Bit Score: 39.42 E-value: 1.52e-03
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| Rab18 | cd01863 | Rab GTPase family 18 (Rab18); Rab18 subfamily. Mammalian Rab18 is implicated in endocytic ... |
4-64 | 2.84e-03 | |||||
Rab GTPase family 18 (Rab18); Rab18 subfamily. Mammalian Rab18 is implicated in endocytic transport and is expressed most highly in polarized epithelial cells. However, trypanosomal Rab, TbRAB18, is upregulated in the BSF (Blood Stream Form) stage and localized predominantly to elements of the Golgi complex. In human and mouse cells, Rab18 has been identified in lipid droplets, organelles that store neutral lipids. GTPase activating proteins (GAPs) interact with GTP-bound Rab and accelerate the hydrolysis of GTP to GDP. Guanine nucleotide exchange factors (GEFs) interact with GDP-bound Rabs to promote the formation of the GTP-bound state. Rabs are further regulated by guanine nucleotide dissociation inhibitors (GDIs), which facilitate Rab recycling by masking C-terminal lipid binding and promoting cytosolic localization. Most Rab GTPases contain a lipid modification site at the C-terminus, with sequence motifs CC, CXC, or CCX. Lipid binding is essential for membrane attachment, a key feature of most Rab proteins. Due to the presence of truncated sequences in this CD, the lipid modification site is not available for annotation. Pssm-ID: 206656 [Multi-domain] Cd Length: 161 Bit Score: 37.68 E-value: 2.84e-03
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| DLP_2 | cd09912 | Dynamin-like protein including dynamins, mitofusins, and guanylate-binding proteins; The ... |
2-70 | 5.06e-03 | |||||
Dynamin-like protein including dynamins, mitofusins, and guanylate-binding proteins; The dynamin family of large mechanochemical GTPases includes the classical dynamins and dynamin-like proteins (DLPs) that are found throughout the Eukarya. This family also includes bacterial DLPs. These proteins catalyze membrane fission during clathrin-mediated endocytosis. Dynamin consists of five domains; an N-terminal G domain that binds and hydrolyzes GTP, a middle domain (MD) involved in self-assembly and oligomerization, a pleckstrin homology (PH) domain responsible for interactions with the plasma membrane, GED, which is also involved in self-assembly, and a proline arginine rich domain (PRD) that interacts with SH3 domains on accessory proteins. To date, three vertebrate dynamin genes have been identified; dynamin 1, which is brain specific, mediates uptake of synaptic vesicles in presynaptic terminals; dynamin-2 is expressed ubiquitously and similarly participates in membrane fission; mutations in the MD, PH and GED domains of dynamin 2 have been linked to human diseases such as Charcot-Marie-Tooth peripheral neuropathy and rare forms of centronuclear myopathy. Dynamin 3 participates in megakaryocyte progenitor amplification, and is also involved in cytoplasmic enlargement and the formation of the demarcation membrane system. This family also includes mitofusins (MFN1 and MFN2 in mammals) that are involved in mitochondrial fusion. Dynamin oligomerizes into helical structures around the neck of budding vesicles in a GTP hydrolysis-dependent manner. Pssm-ID: 206739 [Multi-domain] Cd Length: 180 Bit Score: 37.14 E-value: 5.06e-03
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| PRK12289 | PRK12289 | small ribosomal subunit biogenesis GTPase RsgA; |
2-73 | 5.60e-03 | |||||
small ribosomal subunit biogenesis GTPase RsgA; Pssm-ID: 237040 [Multi-domain] Cd Length: 352 Bit Score: 37.69 E-value: 5.60e-03
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| RAB | smart00175 | Rab subfamily of small GTPases; Rab GTPases are implicated in vesicle trafficking. |
1-64 | 6.33e-03 | |||||
Rab subfamily of small GTPases; Rab GTPases are implicated in vesicle trafficking. Pssm-ID: 197555 [Multi-domain] Cd Length: 164 Bit Score: 36.72 E-value: 6.33e-03
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