Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2B SuperfamilyUbiquitin-like 8092569 3000157 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyCysteine proteinases 8092567 3001808 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyCysteine proteinases 8092567 3001808 SCOP2B (2022-06-29)
ASCOP2B SuperfamilyPLpro Zn-binding domain-like 8092568 3002538 SCOP2B (2022-06-29)

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF16251Betacoronavirus nucleic acid-binding (NAB) (bCoV_NAB)Betacoronavirus nucleic acid-binding (NAB)This is the nucleic acid-binding domain (NAB) from the multidomain nonstructural protein NSP3, and described as NSP3e domain. NSP3 is part of Orf1a polyproteins in SARS-CoV [1]. It is an essential component of the replication/transcription complex [2 ...This is the nucleic acid-binding domain (NAB) from the multidomain nonstructural protein NSP3, and described as NSP3e domain. NSP3 is part of Orf1a polyproteins in SARS-CoV [1]. It is an essential component of the replication/transcription complex [2]. The global domain of the NAB represents a new fold, with a parallel four-strand beta-sheet holding two alpha-helices of three and four turns that are oriented antiparallel to the beta-strands and a group of residues form a positively charged patch on the protein surface as the binding site responsible for binding affinity for nucleic acids. When binding to ssRNA, the NAB prefers sequences with repeats of three consecutive Gs, such as (GGGA)5 and (GGGA)2. A positively charged surface patch (Lys75, Lys76, Lys99, and Arg106) is involved in RNA binding [2,3,4].
Domain
A, B
PF12124Betacoronavirus SUD-C domain (bCoV_SUD_C)Betacoronavirus SUD-C domainThis domain is found in betacoronavirus non-structural protein NSP3, and is about 65 amino acids in length. It was originally thought to exist only in SARS-coronaviruses, and so was termed the SARS-unique domain (SUD), however this has since been ...This domain is found in betacoronavirus non-structural protein NSP3, and is about 65 amino acids in length. It was originally thought to exist only in SARS-coronaviruses, and so was termed the SARS-unique domain (SUD), however this has since been shown to be incorrect. The NSP3 is the product of ORF1a, proteolytically released from the pp1a/1ab polyprotein [1,2]. The SUD domain has three globular domains, SUD-N (N-terminal), SUD-M (middle region of SUD), and SUD-C (C-terminal). SUD-C adopts a fold consisting of seven beta-strands arranged in an anti-parallel beta-sheet, and two alpha-helices which are packed against the same side of the beta-sheet. It adopts a frataxin-like fold with structural similarities to DNA-binding domains. It has been shown that SUD-C binds to single-stranded RNA and recognises purine bases more strongly than pyrimidine bases, but these interactions are stabilised in the presence of SUD-M. The function of this domain is not clear but studies of structural homologues of SUD-C suggest that it could be related to metal, adenylate and nucleic acid binding [3].
Domain
A, B
PF19218Coronavirus replicase NSP3, C-terminal (CoV_NSP3_C)Coronavirus replicase NSP3, C-terminal- Family
A, B
PF08715Coronavirus papain-like peptidase (CoV_peptidase)Coronavirus papain-like peptidase- Family
A, B
PF11633Betacoronavirus single-stranded poly(A) binding domain (bCoV_SUD_M)Betacoronavirus single-stranded poly(A) binding domainThis domain identifies non-structural protein NSP3, the product of ORF1a in group 2 coronavirus. It is found in human SARS coronavirus polyprotein 1a and 1ab, and in related coronavirus polyproteins [1]. NSP3 binds to viral RNA, nucleocapsid protein, ...This domain identifies non-structural protein NSP3, the product of ORF1a in group 2 coronavirus. It is found in human SARS coronavirus polyprotein 1a and 1ab, and in related coronavirus polyproteins [1]. NSP3 binds to viral RNA, nucleocapsid protein, as well as other viral proteins, and participates in polyprotein processing [2]. The domain exhibits a macrodomain fold containing the nsp3 residues 528 to 648, with a flexibly extended N-terminal tail from residues 513 to 527 and a C-terminal flexible tail of residues 649 to 651. SUD-M(527-651) binds single-stranded poly(A); the contact area with this RNA on the protein surface, and the electrophoretic mobility shift assays confirm that SUD-M has higher affinity for purine bases than for pyrimidine bases [3].
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
C, D
Non-structural protein 4
A, B
Papain-like protease nsp3

InterPro: Protein Family Classification InterPro Database Homepage

ChainsAccessionNameType
C, D
IPR022733DPUP/SUD, C-terminal, betacoronavirusDomain
C, D
IPR042515Non-structural protein NSP15, N-terminal domain superfamily, coronavirusHomologous Superfamily
C, D
IPR043174Non-structural protein NSP15, middle domain superfamilyHomologous Superfamily
C, D
IPR044315Nonstructural protein 14, betacoronavirusDomain
C, D
IPR038123Non-structural protein NSP4, C-terminal superfamily, coronavirusHomologous Superfamily
C, D
IPR042570Non-structural protein NSP3, nucleic acid-binding domain superfamily, betacoronavirusHomologous Superfamily
C, D
IPR043178Papain-like protease, thumb domain superfamily, coronavirusHomologous Superfamily
C, D
IPR046441RNA-dependent RNA polymerase, coronavirusDomain
C, D
IPR044863Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domainDomain
C, D
IPR044343Nonstructural protein 13, 1B domain, coronavirusDomain
C, D
IPR038166Polyprotein cleavage domain PL2pro superfamily, betacoronavirusHomologous Superfamily
C, D
IPR037227Endoribonuclease EndoU-likeHomologous Superfamily
C, D
IPR027352Nonstructural protein 13, zinc-binding domain, coronavirus-likeDomain
C, D
IPR009003Peptidase S1, PA clanHomologous Superfamily
C, D
IPR013016Peptidase C16, coronavirusDomain
C, D
IPR009466Non-structural protein 14, coronavirusDomain
C, D
IPR044357NSP3, first ubiquitin-like (Ubl) domain, coronavirusDomain
C, D
IPR046436Nidovirus 3'-5' exoribonuclease domainDomain
C, D
IPR047570NSP12, interface domain, coronavirusDomain
C, D
IPR018995RNA synthesis protein NSP10, coronavirusDomain
C, D
IPR043615Nonstructural protein 2, N-terminal domain, coronavirusDomain
C, D
IPR050534Coronaviruses polyprotein 1abFamily
C, D
IPR043177Papain-like protease, N-terminal domain superfamily, coronavirusHomologous Superfamily
C, D
IPR043606Coronavirus replicase NSP15, N-terminal oligomerizationDomain
C, D
IPR044330Nonstructural protein 15, N-terminal domain, alpha/beta-coronavirusDomain
C, D
IPR041679DNA2/NAM7 helicase-like, C-terminalDomain
C, D
IPR024375Non-structural protein NSP3, SUD-M domain, betacoronavirusDomain
C, D
IPR014828Non-structural protein NSP7, coronavirusDomain
C, D
IPR043503Papain-like viral protease, palm and finger domains, coronavirusHomologous Superfamily
C, D
IPR014829Non-structural protein NSP8, coronavirusDomain
C, D
IPR036499Non-structural protein NSP9 superfamily, coronavirusHomologous Superfamily
C, D
IPR029063S-adenosyl-L-methionine-dependent methyltransferase superfamilyHomologous Superfamily
C, D
IPR044389Non-structural protein 2, SARS-CoV-likeDomain
C, D
IPR043502DNA/RNA polymerase superfamilyHomologous Superfamily
C, D
IPR008740Peptidase C30, coronavirusDomain
C, D
IPR036333RNA synthesis protein NSP10 superfamily, coronavirusHomologous Superfamily
C, D
IPR047573Non-structural protein 2, middle domain, coronavirusDomain
C, D
IPR049894Coronavirus NSP3, 3Ecto domainDomain
C, D
IPR043472Macro domain-likeHomologous Superfamily
C, D
IPR043609NendoU domain, nidovirusDomain
C, D
IPR032592Non-structural protein NSP3, nucleic acid-binding domain, betacoronavirusDomain
C, D
IPR043613Non-structural protein 2, C-terminal domain, coronavirusDomain
C, D
IPR038083Non-structural protein NSP3A domain-like superfamilyHomologous Superfamily
C, D
IPR043504Peptidase S1, PA clan, chymotrypsin-like foldHomologous Superfamily
C, D
IPR044351RNA-dependent RNA polymerase, SARS-CoV-likeDomain
C, D
IPR024358Non-structural protein NSP3, N-terminal, betacoronavirusDomain
C, D
IPR048673Nonstructural protein 13, stalk domain, coronavirusDomain
C, D
IPR046435NSP14, guanine-N7-methyltransferase domain, coronavirusDomain
C, D
IPR009469RNA-dependent RNA polymerase, N-terminal, coronavirusDomain
C, D
IPR043611Coronavirus replicase NSP3, C-terminalDomain
C, D
IPR044864Non-structural protein NSP3, SUD-N (Mac2) domain, betacoronavirusDomain
C, D
IPR047566Coronavirus replicase NSP3, Y domainDomain
C, D
IPR048672Nonstructural protein 13, zinc-binding domain, coronavirusDomain
C, D
IPR043612Non-structural protein NSP4, N-terminal, coronavirusDomain
C, D
IPR027417P-loop containing nucleoside triphosphate hydrolaseHomologous Superfamily
C, D
IPR043608Nonstructural protein 15, middle domain, coronavirusDomain
C, D
IPR044353NSP3, second ubiquitin-like (Ubl) domain, coronavirusDomain
C, D
IPR037204Non-structural protein NSP7 superfamily, coronavirusHomologous Superfamily
C, D
IPR046443NSP1, globular domain, alpha/betacoronavirusDomain
C, D
IPR043610Non-structural protein 6, coronavirusDomain
C, D
IPR027351(+) RNA virus helicase core domainDomain
C, D
IPR044322Nonstructural protein 15, middle domain, alpha/betacoronavirusDomain
C, D
IPR009461Non-structural protein NSP16, coronavirus-likeDomain
C, D
IPR043477Peptidase C30, domain 3, coronavirusHomologous Superfamily
C, D
IPR043478Non-structural protein NSP3, SUD-N (Mac2) domain superfamily, betacoronavirusHomologous Superfamily
C, D
IPR038400Non-structural protein NSP3, SUD-M domain superfamily, betacoronavirusHomologous Superfamily
C, D
IPR046442NSP1, C-terminal domain, betacoronavirusDomain
C, D
IPR001205RNA-directed RNA polymerase, C-terminal domainDomain
C, D
IPR044401NSP15, NendoU domain, coronavirusDomain
C, D
IPR014822Non-structural protein NSP9, coronavirusDomain
C, D
IPR038030NSP1 globular domain superfamily, betacoronavirusHomologous Superfamily
C, D
IPR021590NSP1, globular domain, betacoronavirusDomain
C, D
IPR044367Non-structural protein 6, betacoronavirusDomain
C, D
IPR037230Non-structural protein NSP8 superfamily, coronavirusHomologous Superfamily
C, D
IPR046440Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domainDomain
C, D
IPR032505Non-structural protein NSP4, C-terminal, coronavirusDomain
C, D
IPR046438Nidovirus 2-O-methyltransferaseDomain
C, D
IPR002589Macro domainDomain
C, D
IPR047567Non-structural protein NSP3, group 2-specific marker domain, betacoronavirusDomain
C, D
IPR044371Non-structural protein 3, X-domain-likeDomain
C, D
IPR007094RNA-directed RNA polymerase, catalytic domainDomain
A, B
IPR022733DPUP/SUD, C-terminal, betacoronavirusDomain
A, B
IPR042515Non-structural protein NSP15, N-terminal domain superfamily, coronavirusHomologous Superfamily
A, B
IPR043174Non-structural protein NSP15, middle domain superfamilyHomologous Superfamily
A, B
IPR044315Nonstructural protein 14, betacoronavirusDomain
A, B
IPR038123Non-structural protein NSP4, C-terminal superfamily, coronavirusHomologous Superfamily
A, B
IPR042570Non-structural protein NSP3, nucleic acid-binding domain superfamily, betacoronavirusHomologous Superfamily
A, B
IPR043178Papain-like protease, thumb domain superfamily, coronavirusHomologous Superfamily
A, B
IPR046441RNA-dependent RNA polymerase, coronavirusDomain
A, B
IPR044863Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domainDomain
A, B
IPR044343Nonstructural protein 13, 1B domain, coronavirusDomain
A, B
IPR038166Polyprotein cleavage domain PL2pro superfamily, betacoronavirusHomologous Superfamily
A, B
IPR037227Endoribonuclease EndoU-likeHomologous Superfamily
A, B
IPR027352Nonstructural protein 13, zinc-binding domain, coronavirus-likeDomain
A, B
IPR009003Peptidase S1, PA clanHomologous Superfamily
A, B
IPR013016Peptidase C16, coronavirusDomain
A, B
IPR009466Non-structural protein 14, coronavirusDomain
A, B
IPR044357NSP3, first ubiquitin-like (Ubl) domain, coronavirusDomain
A, B
IPR046436Nidovirus 3'-5' exoribonuclease domainDomain
A, B
IPR047570NSP12, interface domain, coronavirusDomain
A, B
IPR018995RNA synthesis protein NSP10, coronavirusDomain
A, B
IPR043615Nonstructural protein 2, N-terminal domain, coronavirusDomain
A, B
IPR050534Coronaviruses polyprotein 1abFamily
A, B
IPR043177Papain-like protease, N-terminal domain superfamily, coronavirusHomologous Superfamily
A, B
IPR043606Coronavirus replicase NSP15, N-terminal oligomerizationDomain
A, B
IPR044330Nonstructural protein 15, N-terminal domain, alpha/beta-coronavirusDomain
A, B
IPR041679DNA2/NAM7 helicase-like, C-terminalDomain
A, B
IPR024375Non-structural protein NSP3, SUD-M domain, betacoronavirusDomain
A, B
IPR014828Non-structural protein NSP7, coronavirusDomain
A, B
IPR043503Papain-like viral protease, palm and finger domains, coronavirusHomologous Superfamily
A, B
IPR014829Non-structural protein NSP8, coronavirusDomain
A, B
IPR036499Non-structural protein NSP9 superfamily, coronavirusHomologous Superfamily
A, B
IPR029063S-adenosyl-L-methionine-dependent methyltransferase superfamilyHomologous Superfamily
A, B
IPR044389Non-structural protein 2, SARS-CoV-likeDomain
A, B
IPR043502DNA/RNA polymerase superfamilyHomologous Superfamily
A, B
IPR008740Peptidase C30, coronavirusDomain
A, B
IPR036333RNA synthesis protein NSP10 superfamily, coronavirusHomologous Superfamily
A, B
IPR047573Non-structural protein 2, middle domain, coronavirusDomain
A, B
IPR049894Coronavirus NSP3, 3Ecto domainDomain
A, B
IPR043472Macro domain-likeHomologous Superfamily
A, B
IPR043609NendoU domain, nidovirusDomain
A, B
IPR032592Non-structural protein NSP3, nucleic acid-binding domain, betacoronavirusDomain
A, B
IPR043613Non-structural protein 2, C-terminal domain, coronavirusDomain
A, B
IPR038083Non-structural protein NSP3A domain-like superfamilyHomologous Superfamily
A, B
IPR043504Peptidase S1, PA clan, chymotrypsin-like foldHomologous Superfamily
A, B
IPR044351RNA-dependent RNA polymerase, SARS-CoV-likeDomain
A, B
IPR024358Non-structural protein NSP3, N-terminal, betacoronavirusDomain
A, B
IPR048673Nonstructural protein 13, stalk domain, coronavirusDomain
A, B
IPR046435NSP14, guanine-N7-methyltransferase domain, coronavirusDomain
A, B
IPR009469RNA-dependent RNA polymerase, N-terminal, coronavirusDomain
A, B
IPR043611Coronavirus replicase NSP3, C-terminalDomain
A, B
IPR044864Non-structural protein NSP3, SUD-N (Mac2) domain, betacoronavirusDomain
A, B
IPR047566Coronavirus replicase NSP3, Y domainDomain
A, B
IPR048672Nonstructural protein 13, zinc-binding domain, coronavirusDomain
A, B
IPR043612Non-structural protein NSP4, N-terminal, coronavirusDomain
A, B
IPR027417P-loop containing nucleoside triphosphate hydrolaseHomologous Superfamily
A, B
IPR043608Nonstructural protein 15, middle domain, coronavirusDomain
A, B
IPR044353NSP3, second ubiquitin-like (Ubl) domain, coronavirusDomain
A, B
IPR037204Non-structural protein NSP7 superfamily, coronavirusHomologous Superfamily
A, B
IPR046443NSP1, globular domain, alpha/betacoronavirusDomain
A, B
IPR043610Non-structural protein 6, coronavirusDomain
A, B
IPR027351(+) RNA virus helicase core domainDomain
A, B
IPR044322Nonstructural protein 15, middle domain, alpha/betacoronavirusDomain
A, B
IPR009461Non-structural protein NSP16, coronavirus-likeDomain
A, B
IPR043477Peptidase C30, domain 3, coronavirusHomologous Superfamily
A, B
IPR043478Non-structural protein NSP3, SUD-N (Mac2) domain superfamily, betacoronavirusHomologous Superfamily
A, B
IPR038400Non-structural protein NSP3, SUD-M domain superfamily, betacoronavirusHomologous Superfamily
A, B
IPR046442NSP1, C-terminal domain, betacoronavirusDomain
A, B
IPR001205RNA-directed RNA polymerase, C-terminal domainDomain
A, B
IPR044401NSP15, NendoU domain, coronavirusDomain
A, B
IPR014822Non-structural protein NSP9, coronavirusDomain
A, B
IPR038030NSP1 globular domain superfamily, betacoronavirusHomologous Superfamily
A, B
IPR021590NSP1, globular domain, betacoronavirusDomain
A, B
IPR044367Non-structural protein 6, betacoronavirusDomain
A, B
IPR037230Non-structural protein NSP8 superfamily, coronavirusHomologous Superfamily
A, B
IPR046440Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domainDomain
A, B
IPR032505Non-structural protein NSP4, C-terminal, coronavirusDomain
A, B
IPR046438Nidovirus 2-O-methyltransferaseDomain
A, B
IPR002589Macro domainDomain
A, B
IPR047567Non-structural protein NSP3, group 2-specific marker domain, betacoronavirusDomain
A, B
IPR044371Non-structural protein 3, X-domain-likeDomain
A, B
IPR007094RNA-directed RNA polymerase, catalytic domainDomain