Annotations: 8R4C

LRR domain of Roco protein from C. tepidum bound to the activating Nanobody NbRoco2

External Resource: Annotation

Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B [auth A]	WD40	e8r4cA1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)
A [auth C]	WD40	e8r4cC1	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: acid protease	F: WD40	ECOD (v294.2)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A [auth C]	Heavy Chain	IGHV1	-	rab family protein	SAbDab (2026-06-05)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B [auth A]	PF12799	Leucine Rich repeats (2 copies) (LRR_4)	Leucine Rich repeats (2 copies)	-	Repeat

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B [auth A]	Rab family protein	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 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 protein serine/threonine kinase activity catalytic activity, acting on a protein kinase activity protein kinase activity transferase activity catalytic activity phosphotransferase activity, alcohol group as acceptor transferase activity, transferring phosphorus-containing groups guanyl nucleotide binding GTP binding guanyl ribonucleotide binding identical protein binding protein binding	-	-
A [auth C]	NbRoco2	-	-	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B [auth A]	IPR005225	Small GTP-binding domain	Domain
B [auth A]	IPR025875	Leucine rich repeat 4	Repeat
B [auth A]	IPR032171	C-terminal of Roc, COR-A domain	Domain
B [auth A]	IPR001611	Leucine-rich repeat	Repeat
B [auth A]	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
B [auth A]	IPR003591	Leucine-rich repeat, typical subtype	Repeat
B [auth A]	IPR057263	C-terminal of Roc, COR-B domain	Domain
B [auth A]	IPR032675	Leucine-rich repeat domain superfamily	Homologous Superfamily
B [auth A]	IPR020859	Roc domain	Domain
B [auth A]	IPR050836	SDS22/Internalin LRR-containing	Family
B [auth A]	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.