3Q87

Structure of E. cuniculi Mtq2-Trm112 complex responible for the methylation of eRF1 translation termination factor

External Resource: Annotation

Domain Annotation: ECOD Classification
Domain Annotation: CATH
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)
A	Trm112p	e3q87A1	A: few secondary structure elements	X: Trm112p-like (From Topology)	H: Trm112p-like (From Topology)	T: Trm112p-like	F: Trm112p	ECOD (1.6)
B	Methyltransf_11_2	e3q87B1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Methyltransf_11_2	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.20.25.10	Mainly Beta	Single Sheet	N-terminal domain of TfIIb		CATH (4.3.0)
B	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF03966	Trm112p-like protein (Trm112p)	Trm112p-like protein	The function of this family is uncertain. The bacterial members are about 60-70 amino acids in length and the eukaryotic examples are about 120 amino acids in length. The C terminus contains the strongest conservation. Trm112p is required for tRNA ...	The function of this family is uncertain. The bacterial members are about 60-70 amino acids in length and the eukaryotic examples are about 120 amino acids in length. The C terminus contains the strongest conservation. Trm112p is required for tRNA methylation in S. cerevisiae and is found in complexes with 2 tRNA methylases (TRM9 and TRM11) also with putative methyltransferase YDR140W [1]. The zinc-finger protein Ynr046w is plurifunctional and a component of the eRF1 methyltransferase in yeast [2]. The crystal structure of Ynr046w has been determined to 1.7 A resolution. It comprises a zinc-binding domain built from both the N- and C-terminal sequences and an inserted domain, absent from bacterial and archaeal orthologs of the protein, composed of three alpha-helices [2].	Domain
B	PF05175	Methyltransferase small domain (MTS)	Methyltransferase small domain	This domain is found in ribosomal RNA small subunit methyltransferase C (eg Swiss:P44453) as well as other methyltransferases (eg Swiss:Q53742).	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Putative uncharacterized protein ECU08_1170	cation binding ion binding binding metal ion binding small molecule binding	-	-
B	N6 adenine specific DNA methylase	binding organic cyclic compound binding nucleic acid binding transferase activity, transferring one-carbon groups transferase activity methyltransferase activity S-adenosylmethionine-dependent methyltransferase activity catalytic activity catalytic activity, acting on a protein protein methyltransferase activity	methylation metabolic process cellular process	eRF1 methyltransferase complex protein-containing complex intracellular anatomical structure cellular anatomical structure catalytic complex methyltransferase complex transferase complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR005651	Trm112-like	Family
B	IPR002052	DNA methylase, N-6 adenine-specific, conserved site	Conserved Site
B	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
B	IPR052190	Eukaryotic/Archaeal PrmC-Related Methyltransferase	Family
B	IPR007848	Methyltransferase small domain	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.