Annotations: 2O3A

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2o3aa1	Alpha and beta proteins (a/b)	alpha/beta knot	alpha/beta knot	AF0751-like	Uncharacterized protein AF0751	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)
A	d2o3aa2	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)
B	d2o3ab2	Alpha and beta proteins (a/b)	alpha/beta knot	alpha/beta knot	AF0751-like	Uncharacterized protein AF0751	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)
B	d2o3ab3	Artifacts	Tags	Tags	Tags	N-terminal Tags	(Archaeoglobus fulgidus ) [TaxId: 2234 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	alpha/beta knot	8034987	3001122	SCOP2B (2022-06-29)
B	SCOP2 Family	Trm56-like	8022607	4002167	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	alpha/beta knot	8034987	3001122	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	Trm56	e2o3aA1	A: a/b three-layered sandwiches	X: alpha/beta knot (From Topology)	H: alpha/beta knot (From Topology)	T: alpha/beta knot	F: Trm56	ECOD (1.6)
B	Trm56	e2o3aB1	A: a/b three-layered sandwiches	X: alpha/beta knot (From Topology)	H: alpha/beta knot (From Topology)	T: alpha/beta knot	F: Trm56	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.1280.10	Alpha Beta	3-Layer(aba) Sandwich	Alpha/beta knot	SPOUT methyltransferase, trefoil knot domain	CATH (4.3.0)
B	3.40.1280.10	Alpha Beta	3-Layer(aba) Sandwich	Alpha/beta knot	SPOUT methyltransferase, trefoil knot domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01994	tRNA ribose 2'-O-methyltransferase, aTrm56 (Trm56)	tRNA ribose 2'-O-methyltransferase, aTrm56	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	UPF0106 protein AF_0751	tRNA methyltransferase activity RNA methyltransferase activity catalytic activity, acting on RNA tRNA (cytidine) methyltransferase activity transferase activity, transferring one-carbon groups catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA transferase activity S-adenosylmethionine-dependent methyltransferase activity tRNA (cytidine(56)-2'-O)-methyltransferase activity methyltransferase activity catalytic activity	cellular biosynthetic process RNA metabolic process nucleobase-containing compound metabolic process organic substance metabolic process tRNA processing organic substance biosynthetic process RNA processing cellular metabolic process tRNA modification primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process macromolecule methylation cellular biosynthetic process RNA metabolic process nucleobase-containing compound metabolic process organic substance metabolic process tRNA processing organic substance biosynthetic process RNA processing cellular metabolic process tRNA modification primary metabolic process gene expression macromolecule biosynthetic process nucleic acid metabolic process macromolecule methylation tRNA metabolic process organic cyclic compound metabolic process tRNA nucleoside ribose methylation RNA modification biosynthetic process methylation macromolecule modification ncRNA metabolic process nucleic acid catabolic process metabolic process cellular process macromolecule metabolic process RNA methylation tRNA methylation	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR029026	tRNA (guanine-N1-)-methyltransferase, N-terminal	Homologous Superfamily
A, B	IPR029028	Alpha/beta knot methyltransferases	Homologous Superfamily
A, B	IPR002845	tRNA ribose 2'-O-methyltransferase, aTrm56	Family

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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 R01GM133198.