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Conserved domains on  [gi|1912461815|gb|QOE77946|]
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cap-pol fusion protein [Sclerotinia sclerotiorum botybirnavirus 3S1/SX276]

Protein Classification

RNA-dependent RNA polymerase family protein( domain architecture ID 1750808)

RNA-dependent RNA polymerase (RdRp) family protein similar to the RdRp catalytic domain of alpha-, beta-, gamma-, delta-coronaviruses, including three highly pathogenic human coronaviruses (CoVs) such as Middle East respiratory syndrome (MERS)-related CoV, Severe acute respiratory syndrome (SARS) CoV, and SARS-CoV-2

EC:  2.7.7.48
Gene Ontology:  GO:0097747
PubMed:  29439438

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
ps-ssRNAv_RdRp-like super family cl40470
conserved catalytic core domain of RNA-dependent RNA polymerase (RdRp) from the positive-sense ...
1175-1594 1.12e-30

conserved catalytic core domain of RNA-dependent RNA polymerase (RdRp) from the positive-sense single-stranded RNA [(+)ssRNA] viruses and closely related viruses; This family contains the catalytic core domain of RdRp of RNA viruses which belong to Group IV of the Baltimore classification system, and are a group of related viruses that have positive-sense (+), single-stranded (ss) genomes made of ribonucleic acid (RNA). RdRp (also known as RNA replicase) catalyzes the replication of RNA from an RNA template; specifically, it catalyzes the synthesis of the RNA strand complementary to a given RNA template. The Baltimore Classification is divided into 7 classes, 3 of which include RNA viruses: Group IV (+) RNA viruses, Group III double-stranded (ds) RNA viruses, and Group V negative-sense (-) RNA viruses. Baltimore groups of viruses differ with respect to the nature of their genome (i.e., the nucleic acid form that is packaged into virions) and correspond to distinct strategies of genome replication and expression. (+) viral RNA is similar to mRNA and thus can be immediately translated by the host cell. (+)ssRNA viruses can also produce (+) copies of the genome from (-) strands of an intermediate dsRNA genome. This acts as both a transcription and a replication process since the replicated RNA is also mRNA. RdRps belong to the expansive class of polymerases containing so-called palm catalytic domains along with the accessory fingers and thumb domains. All RdRps also have six conserved structural motifs (A-F), located in its majority in the palm subdomain (A-E motifs) and the F motif is located on the finger subdomain. All these motifs have been shown to be implicated in RdRp fidelity such as processes of correct incorporation and reorganization of nucleotides. In addition to Group IV viruses, this model also includes Picobirnaviruses (PBVs), members of the family Picobirnaviridae of dsRNA viruses (Baltimore classification Group III), which are bi-segmented dsRNA viruses. The phylogenetic tree of the RdRps of RNA viruses (realm Riboviria) showed that picobirnaviruses are embedded in the branch of diverse (+)RNA viruses; sometimes they are collectively referred to as the picornavirus supergroup. RdRps of members of the family Permutatetraviridae, a distinct group of RNA viruses that encompass a circular permutation within the RdRp palm domain, are not included in this model.


The actual alignment was detected with superfamily member pfam02123:

Pssm-ID: 477363  Cd Length: 465  Bit Score: 127.96  E-value: 1.12e-30
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1175 EYSDWNSKWASYNDII--RNKWAKgEFQHTPDDLVQCLYIAN-MVGRPHRECDWDDEVKKRTrnvgeiKIARNGKMVPAD 1251
Cdd:pfam02123   77 GYRLRRAAWANSSDFAkdLSDILK-SLGLNASSPGPKLVEGNpLLGRGVTNVDWEEEAKNRV------DLAVVCRLVLLP 149
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1252 ESQLEEEIlQMLLKEGSIRVKKPKTFEQFYSSRGNWMIKGSASGErmliSEYKEIVGQVKglgVELRERATKTDVAEYVS 1331
Cdd:pfam02123  150 MEELRAHI-DAVLDELVVRRGLCDPIRLFVKNEPLWCVNGHPDHK----LREGRLRLLSS---VSLVDQLVRRMLFEPQN 221
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1332 aQAVLALldDMAIHlAKAHTKgNEHGKVRAIYGSLYAHYVLGSFWSTYLEDTVTLASANIKKDnSRLIAETMRRaiSCRW 1411
Cdd:pfam02123  222 -NNEIAW--WGSVP-SKPSMK-LEHGKSRAIYACDTRSYLAFEYLLAPVEKAWANKSVILNPG-EGDISGFDWS--VQDW 293
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1412 GRWIV--CLDYADFNAQHSGMAQRSVIRTLYKwakmmgfHPTEEFNRISEWYADSFTNQgFQRPDNKQWVRAVSG-MFSG 1488
Cdd:pfam02123  294 KRGGVslMLDYDDFNSQHSTESMRAVFERLRR-------RLPDEPAEAADWLVCSMDSM-YQLSDGTLLAQRVPGtLKSG 365
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1489 VRQTTLINTILNLTYHHIAmkncynlGQKVECLQT-YVLGDDgwVEFSTKEKAKMYVVPPKMGGM--EINAIKQLIGQGK 1565
Cdd:pfam02123  366 HRATTFINSVLNCAYAELA-------GAPWADVPTsIHMGDD--VLEGLRTPADATSLLDKYARLgfKVNPSKQSVGHTI 436
                          410       420
                   ....*....|....*....|....*....
gi 1912461815 1566 GEYLKLIYNvDGKVRGCPVRSLASFVHGN 1594
Cdd:pfam02123  437 AEFLRVAFC-SHEVRGYLARAIASLVSGN 464
 
Name Accession Description Interval E-value
RdRP_4 pfam02123
Viral RNA-directed RNA-polymerase; This family includes RNA-dependent RNA polymerase proteins ...
1175-1594 1.12e-30

Viral RNA-directed RNA-polymerase; This family includes RNA-dependent RNA polymerase proteins (RdRPs) from Luteovirus, Totivirus and Rotavirus.


Pssm-ID: 280316  Cd Length: 465  Bit Score: 127.96  E-value: 1.12e-30
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1175 EYSDWNSKWASYNDII--RNKWAKgEFQHTPDDLVQCLYIAN-MVGRPHRECDWDDEVKKRTrnvgeiKIARNGKMVPAD 1251
Cdd:pfam02123   77 GYRLRRAAWANSSDFAkdLSDILK-SLGLNASSPGPKLVEGNpLLGRGVTNVDWEEEAKNRV------DLAVVCRLVLLP 149
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1252 ESQLEEEIlQMLLKEGSIRVKKPKTFEQFYSSRGNWMIKGSASGErmliSEYKEIVGQVKglgVELRERATKTDVAEYVS 1331
Cdd:pfam02123  150 MEELRAHI-DAVLDELVVRRGLCDPIRLFVKNEPLWCVNGHPDHK----LREGRLRLLSS---VSLVDQLVRRMLFEPQN 221
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1332 aQAVLALldDMAIHlAKAHTKgNEHGKVRAIYGSLYAHYVLGSFWSTYLEDTVTLASANIKKDnSRLIAETMRRaiSCRW 1411
Cdd:pfam02123  222 -NNEIAW--WGSVP-SKPSMK-LEHGKSRAIYACDTRSYLAFEYLLAPVEKAWANKSVILNPG-EGDISGFDWS--VQDW 293
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1412 GRWIV--CLDYADFNAQHSGMAQRSVIRTLYKwakmmgfHPTEEFNRISEWYADSFTNQgFQRPDNKQWVRAVSG-MFSG 1488
Cdd:pfam02123  294 KRGGVslMLDYDDFNSQHSTESMRAVFERLRR-------RLPDEPAEAADWLVCSMDSM-YQLSDGTLLAQRVPGtLKSG 365
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1489 VRQTTLINTILNLTYHHIAmkncynlGQKVECLQT-YVLGDDgwVEFSTKEKAKMYVVPPKMGGM--EINAIKQLIGQGK 1565
Cdd:pfam02123  366 HRATTFINSVLNCAYAELA-------GAPWADVPTsIHMGDD--VLEGLRTPADATSLLDKYARLgfKVNPSKQSVGHTI 436
                          410       420
                   ....*....|....*....|....*....
gi 1912461815 1566 GEYLKLIYNvDGKVRGCPVRSLASFVHGN 1594
Cdd:pfam02123  437 AEFLRVAFC-SHEVRGYLARAIASLVSGN 464
ps-ssRNAv-Picornavirales cd23169
catalytic core domain of RNA-dependent RNA polymerase (RdRp) in the order Picornavirales of ...
1357-1529 4.26e-06

catalytic core domain of RNA-dependent RNA polymerase (RdRp) in the order Picornavirales of positive-sense single-stranded RNA [(+)ssRNA] viruses; This family contains the catalytic core domain of RdRp of Picornavirales, an order of (+)ssRNA viruses. The order Picornavirales comprises viruses that historically are referred to as picorna-like viruses and which are classified into eight virus families: Caliciviridae, Dicistroviridae, Iflaviridae, Marnaviridae, Picornaviridae, Polycipiviridae, Secoviridae, and Solinviviridae. All known genomes of Picornavirales members encode proteins with helicase, 3C-like protease, and RdRp domains, as well as capsid proteins with related structures, although the genome organizations can differ among viruses. The picornavirus genome is replicated via a negative-sense (-) RNA intermediate by the viral RdRp, named 3Dpol, which uses VPg (the product of 3B) as a primer to initiate the replication process. The RdRp domain displays a right hand with three functional subdomains, called fingers, palm, and thumb. All RdRps contain conserved polymerase motifs (A-G), located in the palm (A-E motifs) and finger (F-G) subdomains. All these motifs have been implicated in RdRp fidelity such as processes of correct incorporation and reorganization of nucleotides.


Pssm-ID: 438019  Cd Length: 309  Bit Score: 50.67  E-value: 4.26e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1357 GKVRAIYGSLYaHYVL------GSFWSTYLEDTVTLASA---NIKKDNSRLIAETMRRAiscrwGRWIVCLDYADFNAQH 1427
Cdd:cd23169     20 GKTRLFSASPL-DYTIafrkyfGDFIAAFQKNRIKLEHAvgiNPDSVEWTRLYRRLLKK-----GPNIFAGDYSNFDGSL 93
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1428 SGMAQRSVIRTLYKWakmMGFHPTEEFNRISEWYADSFTNqGFQRPDNKqWVRAVSGMFSGVRQTTLINTILNLTYHHIA 1507
Cdd:cd23169     94 PPDVMEAAFDIINDW---YDEYVDDEDERVRKVLFEELIN-TIHLVGNL-VYQVHGGNPSGNPLTTIINSIVNLLYIRYA 168
                          170       180
                   ....*....|....*....|....*..
gi 1912461815 1508 MKNCYNLG-----QKVECLQTYvlGDD 1529
Cdd:cd23169    169 WLRITGLTslsdfKKNVRLVTY--GDD 193
 
Name Accession Description Interval E-value
RdRP_4 pfam02123
Viral RNA-directed RNA-polymerase; This family includes RNA-dependent RNA polymerase proteins ...
1175-1594 1.12e-30

Viral RNA-directed RNA-polymerase; This family includes RNA-dependent RNA polymerase proteins (RdRPs) from Luteovirus, Totivirus and Rotavirus.


Pssm-ID: 280316  Cd Length: 465  Bit Score: 127.96  E-value: 1.12e-30
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1175 EYSDWNSKWASYNDII--RNKWAKgEFQHTPDDLVQCLYIAN-MVGRPHRECDWDDEVKKRTrnvgeiKIARNGKMVPAD 1251
Cdd:pfam02123   77 GYRLRRAAWANSSDFAkdLSDILK-SLGLNASSPGPKLVEGNpLLGRGVTNVDWEEEAKNRV------DLAVVCRLVLLP 149
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1252 ESQLEEEIlQMLLKEGSIRVKKPKTFEQFYSSRGNWMIKGSASGErmliSEYKEIVGQVKglgVELRERATKTDVAEYVS 1331
Cdd:pfam02123  150 MEELRAHI-DAVLDELVVRRGLCDPIRLFVKNEPLWCVNGHPDHK----LREGRLRLLSS---VSLVDQLVRRMLFEPQN 221
                          170       180       190       200       210       220       230       240
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1332 aQAVLALldDMAIHlAKAHTKgNEHGKVRAIYGSLYAHYVLGSFWSTYLEDTVTLASANIKKDnSRLIAETMRRaiSCRW 1411
Cdd:pfam02123  222 -NNEIAW--WGSVP-SKPSMK-LEHGKSRAIYACDTRSYLAFEYLLAPVEKAWANKSVILNPG-EGDISGFDWS--VQDW 293
                          250       260       270       280       290       300       310       320
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1412 GRWIV--CLDYADFNAQHSGMAQRSVIRTLYKwakmmgfHPTEEFNRISEWYADSFTNQgFQRPDNKQWVRAVSG-MFSG 1488
Cdd:pfam02123  294 KRGGVslMLDYDDFNSQHSTESMRAVFERLRR-------RLPDEPAEAADWLVCSMDSM-YQLSDGTLLAQRVPGtLKSG 365
                          330       340       350       360       370       380       390       400
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1489 VRQTTLINTILNLTYHHIAmkncynlGQKVECLQT-YVLGDDgwVEFSTKEKAKMYVVPPKMGGM--EINAIKQLIGQGK 1565
Cdd:pfam02123  366 HRATTFINSVLNCAYAELA-------GAPWADVPTsIHMGDD--VLEGLRTPADATSLLDKYARLgfKVNPSKQSVGHTI 436
                          410       420
                   ....*....|....*....|....*....
gi 1912461815 1566 GEYLKLIYNvDGKVRGCPVRSLASFVHGN 1594
Cdd:pfam02123  437 AEFLRVAFC-SHEVRGYLARAIASLVSGN 464
ps-ssRNAv-Picornavirales cd23169
catalytic core domain of RNA-dependent RNA polymerase (RdRp) in the order Picornavirales of ...
1357-1529 4.26e-06

catalytic core domain of RNA-dependent RNA polymerase (RdRp) in the order Picornavirales of positive-sense single-stranded RNA [(+)ssRNA] viruses; This family contains the catalytic core domain of RdRp of Picornavirales, an order of (+)ssRNA viruses. The order Picornavirales comprises viruses that historically are referred to as picorna-like viruses and which are classified into eight virus families: Caliciviridae, Dicistroviridae, Iflaviridae, Marnaviridae, Picornaviridae, Polycipiviridae, Secoviridae, and Solinviviridae. All known genomes of Picornavirales members encode proteins with helicase, 3C-like protease, and RdRp domains, as well as capsid proteins with related structures, although the genome organizations can differ among viruses. The picornavirus genome is replicated via a negative-sense (-) RNA intermediate by the viral RdRp, named 3Dpol, which uses VPg (the product of 3B) as a primer to initiate the replication process. The RdRp domain displays a right hand with three functional subdomains, called fingers, palm, and thumb. All RdRps contain conserved polymerase motifs (A-G), located in the palm (A-E motifs) and finger (F-G) subdomains. All these motifs have been implicated in RdRp fidelity such as processes of correct incorporation and reorganization of nucleotides.


Pssm-ID: 438019  Cd Length: 309  Bit Score: 50.67  E-value: 4.26e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1357 GKVRAIYGSLYaHYVL------GSFWSTYLEDTVTLASA---NIKKDNSRLIAETMRRAiscrwGRWIVCLDYADFNAQH 1427
Cdd:cd23169     20 GKTRLFSASPL-DYTIafrkyfGDFIAAFQKNRIKLEHAvgiNPDSVEWTRLYRRLLKK-----GPNIFAGDYSNFDGSL 93
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1428 SGMAQRSVIRTLYKWakmMGFHPTEEFNRISEWYADSFTNqGFQRPDNKqWVRAVSGMFSGVRQTTLINTILNLTYHHIA 1507
Cdd:cd23169     94 PPDVMEAAFDIINDW---YDEYVDDEDERVRKVLFEELIN-TIHLVGNL-VYQVHGGNPSGNPLTTIINSIVNLLYIRYA 168
                          170       180
                   ....*....|....*....|....*..
gi 1912461815 1508 MKNCYNLG-----QKVECLQTYvlGDD 1529
Cdd:cd23169    169 WLRITGLTslsdfKKNVRLVTY--GDD 193
RdRP_1 pfam00680
Viral RNA-dependent RNA polymerase; This family represents the RNA-directed RNA polymerase ...
1410-1536 7.30e-05

Viral RNA-dependent RNA polymerase; This family represents the RNA-directed RNA polymerase found in many positive strand RNA eukaryotic viruses. Structural studies indicate that these proteins form the "right hand" structure found in all oligonucleotide polymerases, containing thumb, finger and palm domains, and also the additional bridging finger and thumb domains unique to RNA-directed RNA polymerases.


Pssm-ID: 425815  Cd Length: 450  Bit Score: 47.40  E-value: 7.30e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1410 RWGRWIVCLDYADFNAQHSGMAQRSVIRTLykwAKMMGFHP-TEEFnrisEWYADSFTNQGFQRPDNKQWvRAVSGMFSG 1488
Cdd:pfam00680  223 RFGDYVYELDYSGFDSSVPPWLIRFAFEIL---RELLGFPSnVKEW----RAILELLIYTPIALPNGTVF-KKTGGLPSG 294
                           90       100       110       120       130
                   ....*....|....*....|....*....|....*....|....*....|....*
gi 1912461815 1489 VRQTTLINTILN---LTYHHiaMKNCYNLGQKV----ECLQTYVLGDDGWVEFST 1536
Cdd:pfam00680  295 SPFTSIINSIVNyllILYAL--LKSLENDGPRVcnldKYFDFFTYGDDSLVAVSP 347
Aphthovirus_RdRp cd23210
RNA-dependent RNA polymerase (RdRp) in the Aphthovirus genus of positive-sense single-stranded ...
1413-1529 9.52e-05

RNA-dependent RNA polymerase (RdRp) in the Aphthovirus genus of positive-sense single-stranded RNA [(+)ssRNA] viruses; This group contains the RdRp of RNA viruses belonging to the Aphthovirus genus within the family Picornaviridae, order Picornavirales. Member viruses have a (+)ssRNA genome. This genus includes species such as bovine rhinitis A virus, bovine rhinitis B virus, equine rhinitis A virus, and food-and-mouth disease virus (FMDV). Aphthoviruses primarily infect via the upper respiratory tract. FMDV infects mainly cloven-hoofed animals, but has been isolated from at least 70 species of mammals. Aphthoviruses are non-enveloped and have an icosahedral capsid with a diameter of around 27 to 30 nm. The assembled viral capsid contains a single copy of the RNA genome and 60 copies of the four viral capsid proteins VP1, VP2, VP3, and VP4. The RdRp domain displays a right hand with three functional subdomains, called fingers, palm, and thumb. All RdRps contain conserved polymerase motifs (A-G), located in the palm (A-E motifs) and finger (F-G) subdomains. All these motifs have been implicated in RdRp fidelity such as processes of correct incorporation and reorganization of nucleotides.


Pssm-ID: 438060  Cd Length: 458  Bit Score: 47.25  E-value: 9.52e-05
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1413 RWIVCLDYADFNAQHSGMAQRSVIRtlYKWAKMMGFHPTeefnriSEWYADSFTNQgFQRPDNKQwVRAVSGMFSGVRQT 1492
Cdd:cd23210    227 RNVWDVDYSAFDANHCSDAMNIMFE--EVFRTEFGFHPN------AEWILKTLVNT-EHAYENKR-ITVEGGMPSGCSAT 296
                           90       100       110
                   ....*....|....*....|....*....|....*..
gi 1912461815 1493 TLINTILNLTYHHIAMKNCYNlGQKVECLQTYVLGDD 1529
Cdd:cd23210    297 SIINTILNNIYVLYALRRHYE-GVELDTYTMISYGDD 332
RNA_dep_RNAP cd01699
RNA_dep_RNAP: RNA-dependent RNA polymerase (RdRp) is an essential protein encoded in the ...
1397-1541 1.43e-03

RNA_dep_RNAP: RNA-dependent RNA polymerase (RdRp) is an essential protein encoded in the genomes of all RNA containing viruses with no DNA stage. RdRp catalyzes synthesis of the RNA strand complementary to a given RNA template. RdRps of many viruses are products of processing of polyproteins. Some RdRps consist of one polypeptide chain, and others are complexes of several subunits. The domain organization and the 3D structure of the catalytic center of a wide range of RdRps, including those with a low overall sequence homology, are conserved. The catalytic center is formed by several motifs containing a number of conserved amino acid residues. This subfamily represents the RNA-dependent RNA polymerases from all positive-strand RNA eukaryotic viruses with no DNA stage.


Pssm-ID: 238843 [Multi-domain]  Cd Length: 278  Bit Score: 42.66  E-value: 1.43e-03
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1912461815 1397 RLIAETMRRaiscrWGRWIVCLDYADFNAQHSGMAQRSVIRTLykwAKMMGFHPTEEFNRISEWYADSFTNQGFQRPdnk 1476
Cdd:cd01699     85 TILANKLRS-----FSPVAIALDYSRFDSSLSPQLLEAEHSIY---NALYDDDDELERRNLLRSLTNNSLHIGFNEV--- 153
                           90       100       110       120       130       140
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1912461815 1477 qwVRAVSGMFSGVRQTTLINTILNLTYHHIAMKNCY--NLGQKVECLqtyVLGDDGWVEFSTKEKAK 1541
Cdd:cd01699    154 --YKVRGGRPSGDPLTSIGNSIINCILVRYAFRKLGgkSFFKNVRLL---NYGDDCLLSVEKADDKF 215
ps-ssRNAv_RdRp-like cd23167
conserved catalytic core domain of RNA-dependent RNA polymerase (RdRp) from the positive-sense ...
1475-1530 2.32e-03

conserved catalytic core domain of RNA-dependent RNA polymerase (RdRp) from the positive-sense single-stranded RNA [(+)ssRNA] viruses and closely related viruses; This family contains the catalytic core domain of RdRp of RNA viruses which belong to Group IV of the Baltimore classification system, and are a group of related viruses that have positive-sense (+), single-stranded (ss) genomes made of ribonucleic acid (RNA). RdRp (also known as RNA replicase) catalyzes the replication of RNA from an RNA template; specifically, it catalyzes the synthesis of the RNA strand complementary to a given RNA template. The Baltimore Classification is divided into 7 classes, 3 of which include RNA viruses: Group IV (+) RNA viruses, Group III double-stranded (ds) RNA viruses, and Group V negative-sense (-) RNA viruses. Baltimore groups of viruses differ with respect to the nature of their genome (i.e., the nucleic acid form that is packaged into virions) and correspond to distinct strategies of genome replication and expression. (+) viral RNA is similar to mRNA and thus can be immediately translated by the host cell. (+)ssRNA viruses can also produce (+) copies of the genome from (-) strands of an intermediate dsRNA genome. This acts as both a transcription and a replication process since the replicated RNA is also mRNA. RdRps belong to the expansive class of polymerases containing so-called palm catalytic domains along with the accessory fingers and thumb domains. All RdRps also have six conserved structural motifs (A-F), located in its majority in the palm subdomain (A-E motifs) and the F motif is located on the finger subdomain. All these motifs have been shown to be implicated in RdRp fidelity such as processes of correct incorporation and reorganization of nucleotides. In addition to Group IV viruses, this model also includes Picobirnaviruses (PBVs), members of the family Picobirnaviridae of dsRNA viruses (Baltimore classification Group III), which are bi-segmented dsRNA viruses. The phylogenetic tree of the RdRps of RNA viruses (realm Riboviria) showed that picobirnaviruses are embedded in the branch of diverse (+)RNA viruses; sometimes they are collectively referred to as the picornavirus supergroup. RdRps of members of the family Permutatetraviridae, a distinct group of RNA viruses that encompass a circular permutation within the RdRp palm domain, are not included in this model.


Pssm-ID: 438017 [Multi-domain]  Cd Length: 73  Bit Score: 38.47  E-value: 2.32e-03
                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*.
gi 1912461815 1475 NKQWVRAvsGMFSGVRQTTLINTILNLTYHHIAMKNCYNLGQKVECLQTYVLGDDG 1530
Cdd:cd23167     15 SPDLLKA--GQPSGSPNTSADNSLINLLLARLALRKACGRAEFLNSVGILVYGDDS 68
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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