ORFIII [Banana streak CA virus]
reverse transcriptase family protein( domain architecture ID 10443361)
reverse transcriptase family protein may be an RNA-directed DNA polymerase that catalyzes DNA replication from an RNA template of retrotransposons or retrons
List of domain hits
Name | Accession | Description | Interval | E-value | ||||
RT_LTR | cd01647 | RT_LTR: Reverse transcriptases (RTs) from retrotransposons and retroviruses which have long ... |
1275-1458 | 5.02e-62 | ||||
RT_LTR: Reverse transcriptases (RTs) from retrotransposons and retroviruses which have long terminal repeats (LTRs) in their DNA copies but not in their RNA template. RT catalyzes DNA replication from an RNA template, and is responsible for the replication of retroelements. An RT gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. RTs are present in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and Caulimoviruses. : Pssm-ID: 238825 Cd Length: 177 Bit Score: 209.76 E-value: 5.02e-62
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RNase_H_like super family | cl14782 | Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of ... |
1557-1685 | 2.79e-21 | ||||
Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of spliceosomal protein Prp8; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. It is widely present in various organisms, including bacteria, archaea, and eukaryotes. Most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site residues and have the same catalytic mechanism and functions in cells. RNase H is involved in DNA replication, repair and transcription. An important RNase H function is to remove Okazaki fragments during DNA replication. RNase H inhibitors have been explored as anti-HIV drug targets since RNase H inactivation inhibits reverse transcription. This model also includes the Prp8 domain IV, which adopts the RNase fold but shows low sequence homology; domain IV is implicated in key spliceosomal interactions. The actual alignment was detected with superfamily member cd09274: Pssm-ID: 449355 [Multi-domain] Cd Length: 121 Bit Score: 91.01 E-value: 2.79e-21
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pepsin_retropepsin_like super family | cl11403 | Cellular and retroviral pepsin-like aspartate proteases; This family includes both cellular ... |
1054-1154 | 2.85e-07 | ||||
Cellular and retroviral pepsin-like aspartate proteases; This family includes both cellular and retroviral pepsin-like aspartate proteases. The cellular pepsin and pepsin-like enzymes are twice as long as their retroviral counterparts. The cellular pepsin-like aspartic proteases are found in mammals, plants, fungi and bacteria. These well known and extensively characterized enzymes include pepsins, chymosin, rennin, cathepsins, and fungal aspartic proteases. Several have long been known to be medically (rennin, cathepsin D and E, pepsin) or commercially (chymosin) important. The eukaryotic pepsin-like proteases contain two domains possessing similar topological features. The N- and C-terminal domains, although structurally related by a 2-fold axis, have only limited sequence homology except in the vicinity of the active site. This suggests that the enzymes evolved by an ancient duplication event. The eukaryotic pepsin-like proteases have two active site ASP residues with each N- and C-terminal lobe contributing one residue. While the fungal and mammalian pepsins are bilobal proteins, retropepsins function as dimers and the monomer resembles structure of the N- or C-terminal domains of eukaryotic enzyme. The active site motif (Asp-Thr/Ser-Gly-Ser) is conserved between the retroviral and eukaryotic proteases and between the N-and C-terminal of eukaryotic pepsin-like proteases. The retropepsin-like family includes pepsin-like aspartate proteases from retroviruses, retrotransposons and retroelements; as well as eukaryotic DNA-damage-inducible proteins (DDIs), and bacterial aspartate peptidases. Retropepsin is synthesized as part of the POL polyprotein that contains an aspartyl-protease, a reverse transcriptase, RNase H, and an integrase. The POL polyprotein undergoes specific enzymatic cleavage to yield the mature proteins. This family of aspartate proteases is classified by MEROPS as the peptidase family A1 (pepsin A) and A2 (retropepsin family). The actual alignment was detected with superfamily member pfam00077: Pssm-ID: 472175 Cd Length: 101 Bit Score: 50.44 E-value: 2.85e-07
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COG4372 | COG4372 | Uncharacterized protein, contains DUF3084 domain [Function unknown]; |
898-1114 | 5.70e-06 | ||||
Uncharacterized protein, contains DUF3084 domain [Function unknown]; : Pssm-ID: 443500 [Multi-domain] Cd Length: 370 Bit Score: 50.67 E-value: 5.70e-06
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zf-CCHC | pfam00098 | Zinc knuckle; The zinc knuckle is a zinc binding motif composed of the the following ... |
736-753 | 1.52e-04 | ||||
Zinc knuckle; The zinc knuckle is a zinc binding motif composed of the the following CX2CX4HX4C where X can be any amino acid. The motifs are mostly from retroviral gag proteins (nucleocapsid). Prototype structure is from HIV. Also contains members involved in eukaryotic gene regulation, such as C. elegans GLH-1. Structure is an 18-residue zinc finger. : Pssm-ID: 395050 [Multi-domain] Cd Length: 18 Bit Score: 40.20 E-value: 1.52e-04
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zf-GRF super family | cl46396 | GRF zinc finger; This presumed zinc binding domain is found in a variety of DNA-binding ... |
1751-1784 | 7.07e-03 | ||||
GRF zinc finger; This presumed zinc binding domain is found in a variety of DNA-binding proteins. It seems likely that this domain is involved in nucleic acid binding. It is named GRF after three conserved residues in the centre of the alignment of the domain. This zinc finger may be related to pfam01396. The actual alignment was detected with superfamily member pfam06839: Pssm-ID: 480736 Cd Length: 45 Bit Score: 36.23 E-value: 7.07e-03
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Name | Accession | Description | Interval | E-value | ||||
RT_LTR | cd01647 | RT_LTR: Reverse transcriptases (RTs) from retrotransposons and retroviruses which have long ... |
1275-1458 | 5.02e-62 | ||||
RT_LTR: Reverse transcriptases (RTs) from retrotransposons and retroviruses which have long terminal repeats (LTRs) in their DNA copies but not in their RNA template. RT catalyzes DNA replication from an RNA template, and is responsible for the replication of retroelements. An RT gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. RTs are present in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and Caulimoviruses. Pssm-ID: 238825 Cd Length: 177 Bit Score: 209.76 E-value: 5.02e-62
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RVT_1 | pfam00078 | Reverse transcriptase (RNA-dependent DNA polymerase); A reverse transcriptase gene is usually ... |
1303-1461 | 1.04e-35 | ||||
Reverse transcriptase (RNA-dependent DNA polymerase); A reverse transcriptase gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. Reverse transcriptases occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and caulimoviruses. Pssm-ID: 395031 [Multi-domain] Cd Length: 189 Bit Score: 134.74 E-value: 1.04e-35
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RNase_HI_RT_Ty3 | cd09274 | Ty3/Gypsy family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) ... |
1557-1685 | 2.79e-21 | ||||
Ty3/Gypsy family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes. RNase HI has also been observed as adjunct domains to the reverse transcriptase gene in retroviruses, in long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. Phylogenetic patterns of RNase HI of LTR retroelements is classified into five major families, Ty3/Gypsy, Ty1/Copia, Bel/Pao, DIRS1 and the vertebrate retroviruses. Ty3/Gypsy family widely distributed among the genomes of plants, fungi and animals. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription. Pssm-ID: 260006 [Multi-domain] Cd Length: 121 Bit Score: 91.01 E-value: 2.79e-21
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RT_RNaseH | pfam17917 | RNase H-like domain found in reverse transcriptase; DNA polymerase and ribonuclease H (RNase H) ... |
1556-1654 | 3.16e-13 | ||||
RNase H-like domain found in reverse transcriptase; DNA polymerase and ribonuclease H (RNase H) activities allow reverse transcriptases to convert the single-stranded retroviral RNA genome into double-stranded DNA, which is integrated into the host chromosome during infection. This entry represents the RNase H like domain. Pssm-ID: 465565 Cd Length: 104 Bit Score: 67.54 E-value: 3.16e-13
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RVP | pfam00077 | Retroviral aspartyl protease; Single domain aspartyl proteases from retroviruses, ... |
1054-1154 | 2.85e-07 | ||||
Retroviral aspartyl protease; Single domain aspartyl proteases from retroviruses, retrotransposons, and badnaviruses (plant dsDNA viruses). These proteases are generally part of a larger polyprotein; usually pol, more rarely gag. Retroviral proteases appear to be homologous to a single domain of the two-domain eukaryotic aspartyl proteases such as pepsins, cathepsins, and renins (pfam00026). Pssm-ID: 425454 Cd Length: 101 Bit Score: 50.44 E-value: 2.85e-07
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COG4372 | COG4372 | Uncharacterized protein, contains DUF3084 domain [Function unknown]; |
898-1114 | 5.70e-06 | ||||
Uncharacterized protein, contains DUF3084 domain [Function unknown]; Pssm-ID: 443500 [Multi-domain] Cd Length: 370 Bit Score: 50.67 E-value: 5.70e-06
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COG3577 | COG3577 | Predicted aspartyl protease [General function prediction only]; |
1044-1161 | 1.13e-05 | ||||
Predicted aspartyl protease [General function prediction only]; Pssm-ID: 442797 Cd Length: 152 Bit Score: 47.25 E-value: 1.13e-05
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retropepsin_like_bacteria | cd05483 | Bacterial aspartate proteases, retropepsin-like protease family; This family of bacteria ... |
1056-1148 | 2.67e-05 | ||||
Bacterial aspartate proteases, retropepsin-like protease family; This family of bacteria aspartate proteases is a subfamily of retropepsin-like protease family, which includes enzymes from retrovirus and retrotransposons. While fungal and mammalian pepsin-like aspartate proteases are bilobal proteins with structurally related N- and C-termini, this family of bacteria aspartate proteases is half as long as their fungal and mammalian counterparts. The monomers are structurally related to one lobe of the pepsin molecule and function as homodimers. The active site aspartate occurs within a motif (Asp-Thr/Ser-Gly), as it does in pepsin. In aspartate peptidases, Asp residues are ligands of an activated water molecule in all examples where catalytic residues have been identified. This group of aspartate proteases is classified by MEROPS as the peptidase family A2 (retropepsin family, clan AA), subfamily A2A. Pssm-ID: 133150 Cd Length: 96 Bit Score: 44.54 E-value: 2.67e-05
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zf-CCHC | pfam00098 | Zinc knuckle; The zinc knuckle is a zinc binding motif composed of the the following ... |
736-753 | 1.52e-04 | ||||
Zinc knuckle; The zinc knuckle is a zinc binding motif composed of the the following CX2CX4HX4C where X can be any amino acid. The motifs are mostly from retroviral gag proteins (nucleocapsid). Prototype structure is from HIV. Also contains members involved in eukaryotic gene regulation, such as C. elegans GLH-1. Structure is an 18-residue zinc finger. Pssm-ID: 395050 [Multi-domain] Cd Length: 18 Bit Score: 40.20 E-value: 1.52e-04
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PRK03918 | PRK03918 | DNA double-strand break repair ATPase Rad50; |
897-1063 | 1.65e-04 | ||||
DNA double-strand break repair ATPase Rad50; Pssm-ID: 235175 [Multi-domain] Cd Length: 880 Bit Score: 46.60 E-value: 1.65e-04
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ZnF_C2HC | smart00343 | zinc finger; |
737-753 | 6.07e-04 | ||||
zinc finger; Pssm-ID: 197667 [Multi-domain] Cd Length: 17 Bit Score: 38.58 E-value: 6.07e-04
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Caldesmon | pfam02029 | Caldesmon; |
895-1038 | 2.58e-03 | ||||
Caldesmon; Pssm-ID: 460421 [Multi-domain] Cd Length: 495 Bit Score: 42.55 E-value: 2.58e-03
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zf-GRF | pfam06839 | GRF zinc finger; This presumed zinc binding domain is found in a variety of DNA-binding ... |
1751-1784 | 7.07e-03 | ||||
GRF zinc finger; This presumed zinc binding domain is found in a variety of DNA-binding proteins. It seems likely that this domain is involved in nucleic acid binding. It is named GRF after three conserved residues in the centre of the alignment of the domain. This zinc finger may be related to pfam01396. Pssm-ID: 462017 Cd Length: 45 Bit Score: 36.23 E-value: 7.07e-03
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Name | Accession | Description | Interval | E-value | ||||
RT_LTR | cd01647 | RT_LTR: Reverse transcriptases (RTs) from retrotransposons and retroviruses which have long ... |
1275-1458 | 5.02e-62 | ||||
RT_LTR: Reverse transcriptases (RTs) from retrotransposons and retroviruses which have long terminal repeats (LTRs) in their DNA copies but not in their RNA template. RT catalyzes DNA replication from an RNA template, and is responsible for the replication of retroelements. An RT gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. RTs are present in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and Caulimoviruses. Pssm-ID: 238825 Cd Length: 177 Bit Score: 209.76 E-value: 5.02e-62
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RVT_1 | pfam00078 | Reverse transcriptase (RNA-dependent DNA polymerase); A reverse transcriptase gene is usually ... |
1303-1461 | 1.04e-35 | ||||
Reverse transcriptase (RNA-dependent DNA polymerase); A reverse transcriptase gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. Reverse transcriptases occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and caulimoviruses. Pssm-ID: 395031 [Multi-domain] Cd Length: 189 Bit Score: 134.74 E-value: 1.04e-35
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RNase_HI_RT_Ty3 | cd09274 | Ty3/Gypsy family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) ... |
1557-1685 | 2.79e-21 | ||||
Ty3/Gypsy family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes. RNase HI has also been observed as adjunct domains to the reverse transcriptase gene in retroviruses, in long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. Phylogenetic patterns of RNase HI of LTR retroelements is classified into five major families, Ty3/Gypsy, Ty1/Copia, Bel/Pao, DIRS1 and the vertebrate retroviruses. Ty3/Gypsy family widely distributed among the genomes of plants, fungi and animals. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription. Pssm-ID: 260006 [Multi-domain] Cd Length: 121 Bit Score: 91.01 E-value: 2.79e-21
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RT_ZFREV_like | cd03715 | RT_ZFREV_like: A subfamily of reverse transcriptases (RTs) found in sequences similar to the ... |
1262-1458 | 3.67e-19 | ||||
RT_ZFREV_like: A subfamily of reverse transcriptases (RTs) found in sequences similar to the intact endogenous retrovirus ZFERV from zebrafish and to Moloney murine leukemia virus RT. An RT gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. RTs occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and caulimoviruses. These elements can be divided into two major groups. One group contains retroviruses and DNA viruses whose propagation involves an RNA intermediate. They are grouped together with transposable elements containing long terminal repeats (LTRs). The other group, also called poly(A)-type retrotransposons, contain fungal mitochondrial introns and transposable elements that lack LTRs. Phylogenetic analysis suggests that ZFERV belongs to a distinct group of retroviruses. Pssm-ID: 239685 [Multi-domain] Cd Length: 210 Bit Score: 87.79 E-value: 3.67e-19
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RT_Rtv | cd01645 | RT_Rtv: Reverse transcriptases (RTs) from retroviruses (Rtvs). RTs catalyze the conversion of ... |
1262-1461 | 1.24e-13 | ||||
RT_Rtv: Reverse transcriptases (RTs) from retroviruses (Rtvs). RTs catalyze the conversion of single-stranded RNA into double-stranded viral DNA for integration into host chromosomes. Proteins in this subfamily contain long terminal repeats (LTRs) and are multifunctional enzymes with RNA-directed DNA polymerase, DNA directed DNA polymerase, and ribonuclease hybrid (RNase H) activities. The viral RNA genome enters the cytoplasm as part of a nucleoprotein complex, and the process of reverse transcription generates in the cytoplasm forming a linear DNA duplex via an intricate series of steps. This duplex DNA is colinear with its RNA template, but contains terminal duplications known as LTRs that are not present in viral RNA. It has been proposed that two specialized template switches, known as strand-transfer reactions or "jumps", are required to generate the LTRs. Pssm-ID: 238823 [Multi-domain] Cd Length: 213 Bit Score: 71.93 E-value: 1.24e-13
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RT_RNaseH | pfam17917 | RNase H-like domain found in reverse transcriptase; DNA polymerase and ribonuclease H (RNase H) ... |
1556-1654 | 3.16e-13 | ||||
RNase H-like domain found in reverse transcriptase; DNA polymerase and ribonuclease H (RNase H) activities allow reverse transcriptases to convert the single-stranded retroviral RNA genome into double-stranded DNA, which is integrated into the host chromosome during infection. This entry represents the RNase H like domain. Pssm-ID: 465565 Cd Length: 104 Bit Score: 67.54 E-value: 3.16e-13
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RT_DIRS1 | cd03714 | RT_DIRS1: Reverse transcriptases (RTs) occurring in the DIRS1 group of retransposons. Members ... |
1348-1461 | 3.31e-13 | ||||
RT_DIRS1: Reverse transcriptases (RTs) occurring in the DIRS1 group of retransposons. Members of the subfamily include the Dictyostelium DIRS-1, Volvox carteri kangaroo, and Panagrellus redivivus PAT elements. These elements differ from LTR and conventional non-LTR retrotransposons. They contain split direct repeat (SDR) termini, and have been proposed to integrate via double-stranded closed-circle DNA intermediates assisted by an encoded recombinase which is similar to gamma-site-specific integrase. Pssm-ID: 239684 [Multi-domain] Cd Length: 119 Bit Score: 67.75 E-value: 3.31e-13
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RT_RNaseH_2 | pfam17919 | RNase H-like domain found in reverse transcriptase; |
1534-1627 | 2.05e-11 | ||||
RNase H-like domain found in reverse transcriptase; Pssm-ID: 465567 [Multi-domain] Cd Length: 100 Bit Score: 62.13 E-value: 2.05e-11
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RT_like | cd00304 | RT_like: Reverse transcriptase (RT, RNA-dependent DNA polymerase)_like family. An RT gene is ... |
1348-1461 | 8.36e-08 | ||||
RT_like: Reverse transcriptase (RT, RNA-dependent DNA polymerase)_like family. An RT gene is usually indicative of a mobile element such as a retrotransposon or retrovirus. RTs occur in a variety of mobile elements, including retrotransposons, retroviruses, group II introns, bacterial msDNAs, hepadnaviruses, and caulimoviruses. These elements can be divided into two major groups. One group contains retroviruses and DNA viruses whose propagation involves an RNA intermediate. They are grouped together with transposable elements containing long terminal repeats (LTRs). The other group, also called poly(A)-type retrotransposons, contain fungal mitochondrial introns and transposable elements that lack LTRs. Pssm-ID: 238185 [Multi-domain] Cd Length: 98 Bit Score: 51.97 E-value: 8.36e-08
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RVP | pfam00077 | Retroviral aspartyl protease; Single domain aspartyl proteases from retroviruses, ... |
1054-1154 | 2.85e-07 | ||||
Retroviral aspartyl protease; Single domain aspartyl proteases from retroviruses, retrotransposons, and badnaviruses (plant dsDNA viruses). These proteases are generally part of a larger polyprotein; usually pol, more rarely gag. Retroviral proteases appear to be homologous to a single domain of the two-domain eukaryotic aspartyl proteases such as pepsins, cathepsins, and renins (pfam00026). Pssm-ID: 425454 Cd Length: 101 Bit Score: 50.44 E-value: 2.85e-07
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Asp_protease_2 | pfam13650 | Aspartyl protease; This family consists of predicted aspartic proteases, typically from 180 to ... |
1056-1146 | 4.20e-06 | ||||
Aspartyl protease; This family consists of predicted aspartic proteases, typically from 180 to 230 amino acids in length, in MEROPS clan AA. This model describes the well-conserved 121-residue C-terminal region. The poorly conserved, variable length N-terminal region usually contains a predicted transmembrane helix. Pssm-ID: 433378 Cd Length: 90 Bit Score: 46.51 E-value: 4.20e-06
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COG4372 | COG4372 | Uncharacterized protein, contains DUF3084 domain [Function unknown]; |
898-1114 | 5.70e-06 | ||||
Uncharacterized protein, contains DUF3084 domain [Function unknown]; Pssm-ID: 443500 [Multi-domain] Cd Length: 370 Bit Score: 50.67 E-value: 5.70e-06
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RNase_HI_RT_DIRS1 | cd09275 | DIRS1 family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes ... |
1557-1684 | 8.29e-06 | ||||
DIRS1 family of RNase HI in long-term repeat retroelements; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. RNase H is widely present in various organisms, including bacteria, archaea and eukaryotes. RNase HI has also been observed as adjunct domains to the reverse transcriptase gene in retroviruses, in long-term repeat (LTR)-bearing retrotransposons and non-LTR retrotransposons. RNase HI in LTR retrotransposons perform degradation of the original RNA template, generation of a polypurine tract (the primer for plus-strand DNA synthesis), and final removal of RNA primers from newly synthesized minus and plus strands. The catalytic residues for RNase H enzymatic activity, three aspartatic acids and one glutamic acid residue (DEDD), are unvaried across all RNase H domains. Phylogenetic patterns of RNase HI of LTR retroelements is classified into five major families, Ty3/Gypsy, Ty1/Copia, Bel/Pao, DIRS1 and the vertebrate retroviruses. The structural features of DIRS1-group elements are different from typical LTR elements. RNase H inhibitors have been explored as an anti-HIV drug target because RNase H inactivation inhibits reverse transcription. Pssm-ID: 260007 Cd Length: 120 Bit Score: 46.89 E-value: 8.29e-06
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COG3577 | COG3577 | Predicted aspartyl protease [General function prediction only]; |
1044-1161 | 1.13e-05 | ||||
Predicted aspartyl protease [General function prediction only]; Pssm-ID: 442797 Cd Length: 152 Bit Score: 47.25 E-value: 1.13e-05
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retropepsin_like_bacteria | cd05483 | Bacterial aspartate proteases, retropepsin-like protease family; This family of bacteria ... |
1056-1148 | 2.67e-05 | ||||
Bacterial aspartate proteases, retropepsin-like protease family; This family of bacteria aspartate proteases is a subfamily of retropepsin-like protease family, which includes enzymes from retrovirus and retrotransposons. While fungal and mammalian pepsin-like aspartate proteases are bilobal proteins with structurally related N- and C-termini, this family of bacteria aspartate proteases is half as long as their fungal and mammalian counterparts. The monomers are structurally related to one lobe of the pepsin molecule and function as homodimers. The active site aspartate occurs within a motif (Asp-Thr/Ser-Gly), as it does in pepsin. In aspartate peptidases, Asp residues are ligands of an activated water molecule in all examples where catalytic residues have been identified. This group of aspartate proteases is classified by MEROPS as the peptidase family A2 (retropepsin family, clan AA), subfamily A2A. Pssm-ID: 133150 Cd Length: 96 Bit Score: 44.54 E-value: 2.67e-05
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gag-asp_proteas | pfam13975 | gag-polyprotein putative aspartyl protease; This family of putative aspartyl proteases is ... |
1056-1148 | 4.21e-05 | ||||
gag-polyprotein putative aspartyl protease; This family of putative aspartyl proteases is found pre-dominantly in retroviral proteins. Pssm-ID: 464060 Cd Length: 92 Bit Score: 43.72 E-value: 4.21e-05
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RT_pepA17 | cd01644 | RT_pepA17: Reverse transcriptase (RTs) in retrotransposons. This subfamily represents the RT ... |
1307-1444 | 5.40e-05 | ||||
RT_pepA17: Reverse transcriptase (RTs) in retrotransposons. This subfamily represents the RT domain of a multifunctional enzyme. C-terminal to the RT domain is a domain homologous to aspartic proteinases (corresponding to Merops family A17) encoded by retrotransposons and retroviruses. RT catalyzes DNA replication from an RNA template and is responsible for the replication of retroelements. Pssm-ID: 238822 Cd Length: 213 Bit Score: 46.53 E-value: 5.40e-05
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zf-CCHC | pfam00098 | Zinc knuckle; The zinc knuckle is a zinc binding motif composed of the the following ... |
736-753 | 1.52e-04 | ||||
Zinc knuckle; The zinc knuckle is a zinc binding motif composed of the the following CX2CX4HX4C where X can be any amino acid. The motifs are mostly from retroviral gag proteins (nucleocapsid). Prototype structure is from HIV. Also contains members involved in eukaryotic gene regulation, such as C. elegans GLH-1. Structure is an 18-residue zinc finger. Pssm-ID: 395050 [Multi-domain] Cd Length: 18 Bit Score: 40.20 E-value: 1.52e-04
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PRK03918 | PRK03918 | DNA double-strand break repair ATPase Rad50; |
897-1063 | 1.65e-04 | ||||
DNA double-strand break repair ATPase Rad50; Pssm-ID: 235175 [Multi-domain] Cd Length: 880 Bit Score: 46.60 E-value: 1.65e-04
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PTZ00121 | PTZ00121 | MAEBL; Provisional |
899-1039 | 4.26e-04 | ||||
MAEBL; Provisional Pssm-ID: 173412 [Multi-domain] Cd Length: 2084 Bit Score: 45.52 E-value: 4.26e-04
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PRK03918 | PRK03918 | DNA double-strand break repair ATPase Rad50; |
856-1063 | 4.92e-04 | ||||
DNA double-strand break repair ATPase Rad50; Pssm-ID: 235175 [Multi-domain] Cd Length: 880 Bit Score: 45.05 E-value: 4.92e-04
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ZnF_C2HC | smart00343 | zinc finger; |
737-753 | 6.07e-04 | ||||
zinc finger; Pssm-ID: 197667 [Multi-domain] Cd Length: 17 Bit Score: 38.58 E-value: 6.07e-04
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RNase_H_like | cd06222 | Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of ... |
1558-1683 | 7.42e-04 | ||||
Ribonuclease H-like superfamily, including RNase H, HI, HII, HIII, and RNase-like domain IV of spliceosomal protein Prp8; Ribonuclease H (RNase H) enzymes are divided into two major families, Type 1 and Type 2, based on amino acid sequence similarities and biochemical properties. RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner in the presence of divalent cations. It is widely present in various organisms, including bacteria, archaea, and eukaryotes. Most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site residues and have the same catalytic mechanism and functions in cells. RNase H is involved in DNA replication, repair and transcription. An important RNase H function is to remove Okazaki fragments during DNA replication. RNase H inhibitors have been explored as anti-HIV drug targets since RNase H inactivation inhibits reverse transcription. This model also includes the Prp8 domain IV, which adopts the RNase fold but shows low sequence homology; domain IV is implicated in key spliceosomal interactions. Pssm-ID: 259998 [Multi-domain] Cd Length: 121 Bit Score: 41.15 E-value: 7.42e-04
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HEC1 | COG5185 | Chromosome segregation protein NDC80, interacts with SMC proteins [Cell cycle control, cell ... |
895-1101 | 8.74e-04 | ||||
Chromosome segregation protein NDC80, interacts with SMC proteins [Cell cycle control, cell division, chromosome partitioning]; Pssm-ID: 444066 [Multi-domain] Cd Length: 594 Bit Score: 44.18 E-value: 8.74e-04
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retropepsin_like | cd00303 | Retropepsins; pepsin-like aspartate proteases; The family includes pepsin-like aspartate ... |
1057-1148 | 9.27e-04 | ||||
Retropepsins; pepsin-like aspartate proteases; The family includes pepsin-like aspartate proteases from retroviruses, retrotransposons and retroelements, as well as eukaryotic dna-damage-inducible proteins (DDIs), and bacterial aspartate peptidases. While fungal and mammalian pepsins are bilobal proteins with structurally related N and C-terminals, retropepsins are half as long as their fungal and mammalian counterparts. The monomers are structurally related to one lobe of the pepsin molecule and retropepsins function as homodimers. The active site aspartate occurs within a motif (Asp-Thr/Ser-Gly), as it does in pepsin. Retroviral aspartyl protease is synthesized as part of the POL polyprotein that contains an aspartyl protease, a reverse transcriptase, RNase H, and an integrase. The POL polyprotein undergoes specific enzymatic cleavage to yield the mature proteins. In aspartate peptidases, Asp residues are ligands of an activated water molecule in all examples where catalytic residues have been identified. This group of aspartate peptidases is classified by MEROPS as the peptidase family A2 (retropepsin family, clan AA), subfamily A2A. Pssm-ID: 133136 Cd Length: 92 Bit Score: 40.01 E-value: 9.27e-04
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DR0291 | COG1579 | Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General ... |
972-1038 | 9.88e-04 | ||||
Predicted nucleic acid-binding protein DR0291, contains C4-type Zn-ribbon domain [General function prediction only]; Pssm-ID: 441187 [Multi-domain] Cd Length: 236 Bit Score: 42.60 E-value: 9.88e-04
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COG2433 | COG2433 | Possible nuclease of RNase H fold, RuvC/YqgF family [General function prediction only]; |
894-1038 | 1.11e-03 | ||||
Possible nuclease of RNase H fold, RuvC/YqgF family [General function prediction only]; Pssm-ID: 441980 [Multi-domain] Cd Length: 644 Bit Score: 43.69 E-value: 1.11e-03
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RP_RTVL_H_like | cd06095 | Retropepsin of the RTVL_H family of human endogenous retrovirus-like elements; This family ... |
1064-1148 | 1.42e-03 | ||||
Retropepsin of the RTVL_H family of human endogenous retrovirus-like elements; This family includes aspartate proteases from retroelements with LTR (long terminal repeats) including the RTVL_H family of human endogenous retrovirus-like elements. While fungal and mammalian pepsins are bilobal proteins with structurally related N- and C-termini, retropepsins are half as long as their fungal and mammalian counterparts. The monomers are structurally related to one lobe of the pepsin molecule and retropepsins function as homodimers. The active site aspartate occurs within a motif (Asp-Thr/Ser-Gly), as it does in pepsin. Retroviral aspartyl protease is synthesized as part of the POL polyprotein that contains an aspartyl protease, a reverse transcriptase, RNase H, and an integrase. The POL polyprotein undergoes specific enzymatic cleavage to yield the mature proteins. In aspartate peptidases, Asp residues are ligands of an activated water molecule in all examples where catalytic residues have been identified. This group of aspartate peptidases is classified by MEROPS as the peptidase family A2 (retropepsin family, clan AA), subfamily A2A. Pssm-ID: 133159 Cd Length: 86 Bit Score: 39.24 E-value: 1.42e-03
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Caldesmon | pfam02029 | Caldesmon; |
895-1038 | 2.58e-03 | ||||
Caldesmon; Pssm-ID: 460421 [Multi-domain] Cd Length: 495 Bit Score: 42.55 E-value: 2.58e-03
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RNase_HI_eukaryote_like | cd09280 | Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic ... |
1603-1684 | 2.98e-03 | ||||
Eukaryotic RNase H is essential and is longer and more complex than their prokaryotic counterparts; Ribonuclease H (RNase H) is classified into two families, type 1 (prokaryotic RNase HI, eukaryotic RNase H1 and viral RNase H) and type 2 (prokaryotic RNase HII and HIII, and eukaryotic RNase H2). RNase H is an endonuclease that cleaves the RNA strand of an RNA/DNA hybrid in a sequence non-specific manner. RNase H is involved in DNA replication, repair and transcription. One of the important functions of RNase H is to remove Okazaki fragments during DNA replication. RNase H is widely present in various organisms, including bacteria, archaea and eukaryote and most prokaryotic and eukaryotic genomes contain multiple RNase H genes. Despite the lack of amino acid sequence homology, type 1 and type 2 RNase H share a main-chain fold and steric configurations of the four acidic active-site (DEDD) residues and have the same catalytic mechanism and functions in cells. Eukaryotic RNase H is longer and more complex than in prokaryotes. Almost all eukaryotic RNase HI have highly conserved regions at their N-termini called hybrid binding domain (HBD). It is speculated that the HBD contributes to binding the RNA/DNA hybrid. Prokaryotes and some single-cell eukaryotes do not require RNase H for viability, but RNase H is essential in higher eukaryotes. RNase H knockout mice lack mitochondrial DNA replication and die as embryos. Pssm-ID: 260012 [Multi-domain] Cd Length: 145 Bit Score: 39.86 E-value: 2.98e-03
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PRK12704 | PRK12704 | phosphodiesterase; Provisional |
891-1040 | 5.08e-03 | ||||
phosphodiesterase; Provisional Pssm-ID: 237177 [Multi-domain] Cd Length: 520 Bit Score: 41.69 E-value: 5.08e-03
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PhaF | COG3937 | Polyhydroxyalkanoate synthesis regulator phasin [Secondary metabolites biosynthesis, transport ... |
959-1015 | 5.26e-03 | ||||
Polyhydroxyalkanoate synthesis regulator phasin [Secondary metabolites biosynthesis, transport and catabolism, Signal transduction mechanisms]; Pssm-ID: 443138 [Multi-domain] Cd Length: 103 Bit Score: 38.24 E-value: 5.26e-03
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zf-GRF | pfam06839 | GRF zinc finger; This presumed zinc binding domain is found in a variety of DNA-binding ... |
1751-1784 | 7.07e-03 | ||||
GRF zinc finger; This presumed zinc binding domain is found in a variety of DNA-binding proteins. It seems likely that this domain is involved in nucleic acid binding. It is named GRF after three conserved residues in the centre of the alignment of the domain. This zinc finger may be related to pfam01396. Pssm-ID: 462017 Cd Length: 45 Bit Score: 36.23 E-value: 7.07e-03
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