5HW4

Crystal structure of Escherichia coli 16S rRNA methyltransferase RsmI in complex with AdoMet

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	TP_methylase_C	e5hw4A1	A: a+b two layers	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain (From Topology)	T: Tetrapyrrole methylase C-terminal domain	F: TP_methylase_C	ECOD (1.6)
A	TP_methylase_N	e5hw4A2	A: a/b three-layered sandwiches	X: Tetrapyrrole methylase N-terminal domain (From Topology)	H: Tetrapyrrole methylase N-terminal domain (From Topology)	T: Tetrapyrrole methylase N-terminal domain	F: TP_methylase_N	ECOD (1.6)
B	TP_methylase_C	e5hw4B2	A: a+b two layers	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain (From Topology)	T: Tetrapyrrole methylase C-terminal domain	F: TP_methylase_C	ECOD (1.6)
B	TP_methylase_N	e5hw4B1	A: a/b three-layered sandwiches	X: Tetrapyrrole methylase N-terminal domain (From Topology)	H: Tetrapyrrole methylase N-terminal domain (From Topology)	T: Tetrapyrrole methylase N-terminal domain	F: TP_methylase_N	ECOD (1.6)
C	TP_methylase_C	e5hw4C2	A: a+b two layers	X: Tetrapyrrole methylase C-terminal domain-like	H: Tetrapyrrole methylase C-terminal domain (From Topology)	T: Tetrapyrrole methylase C-terminal domain	F: TP_methylase_C	ECOD (1.6)
C	TP_methylase_N	e5hw4C1	A: a/b three-layered sandwiches	X: Tetrapyrrole methylase N-terminal domain (From Topology)	H: Tetrapyrrole methylase N-terminal domain (From Topology)	T: Tetrapyrrole methylase N-terminal domain	F: TP_methylase_N	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.1010.10	Alpha Beta	3-Layer(aba) Sandwich	Cobalt-precorrin-4 Transmethylase	domain 1	CATH (4.3.0)
A	3.30.950.10	Alpha Beta	2-Layer Sandwich	Methyltransferase, Cobalt-precorrin-4 Transmethylase	Domain 2	CATH (4.3.0)
B	3.40.1010.10	Alpha Beta	3-Layer(aba) Sandwich	Cobalt-precorrin-4 Transmethylase	domain 1	CATH (4.3.0)
B	3.30.950.10	Alpha Beta	2-Layer Sandwich	Methyltransferase, Cobalt-precorrin-4 Transmethylase	Domain 2	CATH (4.3.0)
C	3.40.1010.10	Alpha Beta	3-Layer(aba) Sandwich	Cobalt-precorrin-4 Transmethylase	domain 1	CATH (4.3.0)
C	3.30.950.10	Alpha Beta	2-Layer Sandwich	Methyltransferase, Cobalt-precorrin-4 Transmethylase	Domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C	PF23016	RsmI C-terminal HTH domain (RsmI_C)	RsmI C-terminal HTH domain	This entry represents a small helical domain at the C-terminus of RsmI that folds into a typical three helical DNA/RNA binding bundle containing HTH motif. This domain is found in Ribosomal RNA small subunit methyltransferase I (RsmI) and related pro ...	This entry represents a small helical domain at the C-terminus of RsmI that folds into a typical three helical DNA/RNA binding bundle containing HTH motif. This domain is found in Ribosomal RNA small subunit methyltransferase I (RsmI) and related proteins. RsmI is an S-adenosyl-L-methionine-dependent methyltransferase that catalyses the 2-O-methylation of the ribose of cytidine 1402 (C1402) in 16S rRNA. It may play a role in fine-tuning the shape and functions of the P-site to increase the translation fidelity. In vitro, active on the assembled 30S subunit, but not naked 16S rRNA or 70S ribosomes.	Domain
A, B, C	PF00590	Tetrapyrrole (Corrin/Porphyrin) Methylases (TP_methylase)	Tetrapyrrole (Corrin/Porphyrin) Methylases	This family uses S-AdoMet in the methylation of diverse substrates. This family includes a related group of bacterial proteins of unknown function, including Swiss:P45528. This family includes the methylase Dipthine synthase.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C	Ribosomal RNA small subunit methyltransferase I	RNA methyltransferase activity O-methyltransferase activity rRNA methyltransferase activity catalytic activity, acting on RNA transferase activity, transferring one-carbon groups catalytic activity, acting on a nucleic acid transferase activity catalytic activity, acting on a rRNA S-adenosylmethionine-dependent methyltransferase activity rRNA (cytosine-2'-O-)-methyltransferase activity methyltransferase activity catalytic activity rRNA (cytosine) methyltransferase activity RNA 2'-O-methyltransferase activity RNA methyltransferase activity O-methyltransferase activity rRNA methyltransferase activity catalytic activity, acting on RNA transferase activity, transferring one-carbon groups catalytic activity, acting on a nucleic acid transferase activity catalytic activity, acting on a rRNA S-adenosylmethionine-dependent methyltransferase activity rRNA (cytosine-2'-O-)-methyltransferase activity methyltransferase activity catalytic activity rRNA (cytosine) methyltransferase activity RNA 2'-O-methyltransferase activity identical protein binding protein binding binding protein homodimerization activity protein dimerization activity	ribonucleoprotein complex biogenesis cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process rRNA processing gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process cellular component biogenesis RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process ribonucleoprotein complex biogenesis cellular biosynthetic process cellular metabolic process RNA metabolic process primary metabolic process rRNA processing gene expression nucleobase-containing compound biosynthetic process macromolecule biosynthetic process nucleic acid metabolic process nucleobase-containing compound metabolic process cellular component biogenesis RNA biosynthetic process ribosome biogenesis nucleic acid biosynthetic process biosynthetic process metabolic process cellular process macromolecule metabolic process cellular component organization or biogenesis RNA processing rRNA metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C	IPR018063	SAM-dependent methyltransferase RsmI, conserved site	Conserved Site
A, B, C	IPR035996	Tetrapyrrole methylase superfamily	Homologous Superfamily
A, B, C	IPR014777	Tetrapyrrole methylase, subdomain 1	Homologous Superfamily
A, B, C	IPR014776	Tetrapyrrole methylase, subdomain 2	Homologous Superfamily
A, B, C	IPR000878	Tetrapyrrole methylase	Domain
A, B, C	IPR008189	rRNA small subunit methyltransferase I	Family

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 R01GM133198.