Annotations: 6H62

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	tRNA-guanine transglycosylase	8094426	4003338	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	tRNA-guanine transglycosylase	8094427	3000635	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	tRNA-guanine transglycosylase	8094427	3000635	SCOP2B (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	TGT	e6h62A1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: TGT	ECOD (1.6)
B	TGT	e6h62B1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: TGT	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01702	Queuine tRNA-ribosyltransferase (TGT)	Queuine tRNA-ribosyltransferase	This is a family of queuine tRNA-ribosyltransferases EC:2.4.2.29, also known as tRNA-guanine transglycosylase and guanine insertion enzyme. Queuine tRNA-ribosyltransferase modifies tRNAs for asparagine, aspartic acid, histidine and tyrosine with que ...	This is a family of queuine tRNA-ribosyltransferases EC:2.4.2.29, also known as tRNA-guanine transglycosylase and guanine insertion enzyme. Queuine tRNA-ribosyltransferase modifies tRNAs for asparagine, aspartic acid, histidine and tyrosine with queuine. It catalyses the exchange of guanine-34 at the wobble position with 7-aminomethyl-7-deazaguanine, and the addition of a cyclopentenediol moiety to 7-aminomethyl-7-deazaguanine-34 tRNA; giving a hypermodified base queuine in the wobble position [1,2]. The aligned region contains a zinc binding motif C-x-C-x2-C-x29-H, and important tRNA and 7-aminomethyl-7deazaguanine binding residues [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Queuine tRNA-ribosyltransferase catalytic subunit 1	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity protein heterodimerization activity pentosyltransferase activity glycosyltransferase activity catalytic activity, acting on RNA tRNA-guanosine(34) queuine transglycosylase activity catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA transferase activity catalytic activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity protein heterodimerization activity pentosyltransferase activity glycosyltransferase activity catalytic activity, acting on RNA tRNA-guanosine(34) queuine transglycosylase activity catalytic activity, acting on a nucleic acid catalytic activity, acting on a tRNA transferase activity catalytic activity cation binding ion binding metal ion binding small molecule binding	tRNA modification RNA metabolic process tRNA-guanine transglycosylation primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process RNA modification biosynthetic process tRNA processing tRNA modification RNA metabolic process tRNA-guanine transglycosylation primary metabolic process gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process tRNA metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process RNA modification biosynthetic process tRNA processing macromolecule modification metabolic process cellular process macromolecule metabolic process RNA processing	protein-containing complex tRNA-guanine transglycosylase complex catalytic complex transferase complex cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle mitochondrial membrane mitochondrion cytoplasmic side of membrane membrane organelle outer membrane cytoplasmic side of mitochondrial outer membrane protein-containing complex tRNA-guanine transglycosylase complex catalytic complex transferase complex cellular anatomical structure intracellular anatomical structure cytoplasm membrane-bounded organelle mitochondrial membrane mitochondrion cytoplasmic side of membrane membrane organelle outer membrane cytoplasmic side of mitochondrial outer membrane intracellular membrane-bounded organelle side of membrane intracellular organelle organelle envelope bounding membrane of organelle organelle mitochondrial envelope mitochondrial outer membrane outer membrane organelle membrane nucleus

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR036511	Queuine tRNA-ribosyltransferase-like	Homologous Superfamily
A, B	IPR004803	tRNA-guanine transglycosylase	Family
A, B	IPR002616	tRNA-guanine(15) transglycosylase-like	Domain

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.