Annotations: 3BRC

Crystal structure of a conserved protein of unknown function from Methanobacterium thermoautotrophicum

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Protein Family Annotation
InterPro: Protein Family Classification

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	ITPase-like	8017440	3000497	SCOP2B (2022-06-29)
A	SCOP2 Family	HcgB-like	8017439	4003978	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	ITPase-like	8017440	3000497	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)
B	DUF3239	e3brcB1	A: a/b three-layered sandwiches	X: HTH	H: Nudix	T: Nudix	F: DUF3239	ECOD (v294.1)
A	HcgB	e3brcA1	A: a/b three-layered sandwiches	X: EGF-like	H: Growth factor receptor domain	T: Growth factor receptor domain	F: HcgB	ECOD (v294.1)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
B	3.40.50.10150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	B12-dependent dehydatase associated subunit	CATH (4.3.0)
A	1.10.287.470	Mainly Alpha	Orthogonal Bundle	Helix Hairpins	Helix hairpin bin	CATH (4.3.0)
A	3.40.50.10150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	B12-dependent dehydatase associated subunit	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF11576	FeGP cofactor biosynthesis protein HcgB, guanylyltransferase (HcgB)	FeGP cofactor biosynthesis protein HcgB, guanylyltransferase	This entry represents the guanylyltransferase component of the Iron-guanylylpyridinol (FeGP) cofactor biosynthesis protein HcgB [1]. HcgB transfers the guanosine monophosphate (GMP) moiety from guanosine triphosphate (GTP) to a pyridinol precursor [2 ...	This entry represents the guanylyltransferase component of the Iron-guanylylpyridinol (FeGP) cofactor biosynthesis protein HcgB [1]. HcgB transfers the guanosine monophosphate (GMP) moiety from guanosine triphosphate (GTP) to a pyridinol precursor [2].	Domain

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR012019	FeGP cofactor biosynthesis protein HcgB, guanylyltransferase	Family
A, B	IPR010254	B12-dependent dehydratases, beta subunit	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.