Annotations: 1CQQ

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1cqqa_	All beta proteins	Trypsin-like serine proteases	Trypsin-like serine proteases	Viral cysteine protease of trypsin fold	3C cysteine protease (picornain 3C)	(rhinovirus A2 ) [TaxId: 12130 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Viral cysteine protease of trypsin fold, (3C/2A)Pro-like	8029915	4007776	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Trypsin-like serine proteases	8042294	3000114	SCOP2 (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Peptidase_C3	e1cqqA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: FMN-binding split barrel 2	F: Peptidase_C3	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.40.10.10	Mainly Beta	Beta Barrel	Thrombin, subunit H	Trypsin-like serine proteases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00548	3C cysteine protease (picornain 3C) (Peptidase_C3)	3C cysteine protease (picornain 3C)	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	TYPE 2 RHINOVIRUS 3C PROTEASE	5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity RNA-dependent RNA polymerase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity 5'-3' RNA polymerase activity catalytic activity, acting on RNA catalytic activity, acting on a nucleic acid RNA polymerase activity transferase activity RNA-dependent RNA polymerase activity nucleotidyltransferase activity catalytic activity transferase activity, transferring phosphorus-containing groups cysteine-type peptidase activity peptidase activity catalytic activity, acting on a protein cysteine-type endopeptidase activity hydrolase activity endopeptidase activity RNA binding binding organic cyclic compound binding nucleic acid binding adenyl ribonucleotide binding nucleotide binding purine ribonucleotide binding purine ribonucleoside triphosphate binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding adenyl nucleotide binding ATP binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding pyrophosphatase activity ribonucleoside triphosphate phosphatase activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity, acting on acid anhydrides passive transmembrane transporter activity channel activity transporter activity transmembrane transporter activity helicase activity RNA helicase activity ATP-dependent activity, acting on RNA ATP-dependent activity structural molecule activity cation binding metal ion binding	nucleobase-containing compound metabolic process DNA replication metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular biosynthetic process cellular metabolic process RNA metabolic process viral life cycle nucleobase-containing compound biosynthetic process macromolecule biosynthetic process RNA biosynthetic process nucleobase-containing compound metabolic process DNA replication metabolic process primary metabolic process DNA metabolic process macromolecule metabolic process nucleic acid metabolic process cellular biosynthetic process cellular metabolic process RNA metabolic process viral life cycle nucleobase-containing compound biosynthetic process macromolecule biosynthetic process RNA biosynthetic process nucleic acid biosynthetic process viral genome replication biosynthetic process viral RNA genome replication viral process cellular process transmembrane transport localization transport monoatomic ion transmembrane transport monoatomic ion transport establishment of localization gene expression DNA-templated transcription symbiont-mediated disruption of host anatomical structure biological process involved in interspecies interaction between organisms biological process involved in interaction with host biological process involved in symbiotic interaction symbiont-mediated perturbation of host membrane symbiont genome entry into host cell via pore formation in plasma membrane symbiont-mediated disruption of host cellular anatomical entity symbiont entry into host cell symbiont entry into host disruption of anatomical structure in another organism virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host symbiont-mediated perturbation of host defense response response to host defenses response to stimulus response to other organism response to defenses of other organism modulation by virus of host process response to external stimulus virus-mediated perturbation of host defense response response to biotic stimulus symbiont-mediated perturbation of host process response to host response to external biotic stimulus modulation of process of another organism modulation by virus of host cellular process import into cell vesicle-mediated transport endocytosis involved in viral entry into host cell endocytosis transport of virus symbiont-mediated perturbation of host cellular process catabolic process regulation of cellular process autophagy positive regulation of biological process positive regulation of cellular metabolic process regulation of autophagy cellular catabolic process positive regulation of metabolic process induction by virus of host autophagy process utilizing autophagic mechanism positive regulation of cellular process positive regulation of autophagy regulation of biological process modulation by virus of host autophagy biological regulation regulation of cellular metabolic process regulation of catabolic process positive regulation of catabolic process regulation of cellular catabolic process positive regulation of cellular catabolic process regulation of metabolic process symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity symbiont-mediated suppression of host pathogen-associated molecular pattern receptor signaling pathway symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response response to host immune response symbiont-mediated suppression of host defenses symbiont-mediated perturbation of host innate immune response symbiont-mediated perturbation of host signal transduction pathway symbiont-mediated perturbation of host immune response symbiont-mediated perturbation of host defenses symbiont-mediated suppression of host signal transduction pathway symbiont-mediated suppression of cytoplasmic pattern recognition receptor signaling pathway proteolysis protein metabolic process symbiont-mediated suppression of host mRNA export from nucleus symbiont-mediated suppression of host gene expression symbiont-mediated perturbation of host gene expression	membrane cellular anatomical entity host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane host cell cytoplasmic vesicle membrane host cell cytoplasm part host intracellular organelle host cell cytoplasmic vesicle host cell cytoplasm host cell part host intracellular region viral capsid membrane cellular anatomical entity host intracellular membrane-bounded organelle host cellular component host intracellular part host cell membrane host cell cytoplasmic vesicle membrane host cell cytoplasm part host intracellular organelle host cell cytoplasmic vesicle host cell cytoplasm host cell part host intracellular region viral capsid icosahedral viral capsid virion component T=pseudo3 icosahedral viral capsid host cell nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001205	RNA-directed RNA polymerase, C-terminal domain	Domain
A	IPR002527	Picornavirus 2B protein	Domain
A	IPR043128	Reverse transcriptase/Diguanylate cyclase domain	Homologous Superfamily
A	IPR003138	Picornavirus coat protein VP4	Family
A	IPR000199	Peptidase C3A/C3B, picornaviral	Domain
A	IPR001676	Picornavirus capsid	Domain
A	IPR014759	Helicase, superfamily 3, single-stranded RNA virus	Domain
A	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
A	IPR000081	Peptidase C3, picornavirus core protein 2A	Domain
A	IPR029053	Viral coat protein subunit	Homologous Superfamily
A	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
A	IPR043502	DNA/RNA polymerase superfamily	Homologous Superfamily
A	IPR044067	Picornavirales 3C/3C-like protease domain	Domain
A	IPR033703	Picornavirus/Calicivirus coat protein	Domain
A	IPR014838	Poliovirus 3A protein-like	Domain
A	IPR036203	Poliovirus core protein 3a, soluble domain	Homologous Superfamily
A	IPR043504	Peptidase S1, PA clan, chymotrypsin-like fold	Homologous Superfamily
A	IPR007094	RNA-directed RNA polymerase, catalytic domain	Domain
A	IPR000605	Helicase, superfamily 3, single-stranded DNA/RNA virus	Domain

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	picornain 3C M-CSA #477	The human rhinovirus 3C is a cysteine protease that is essential for the processing of the viral precursor polyprotein and release of RNA replication proteins. In UniProtKB P04936, the protease 3C portion of the chain is responsible for the cleavage of the sites: 330 - 331 992 - 993 1409 - 1410 1486 - 1487 1507 - 1508 1690 - 1691 The 3C portion of the enzyme is related by amino acid sequence to the trypsin-like serine proteases, and is a member of a novel group of cysteine proteases with a serine protease-like fold.	Defined by 4 residues: HIS:A-40GLU:A-71GLY:A-145CYS:A-147 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.