Annotations: 4FSX

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00145	e4fsxA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: PF00145	ECOD (1.6)
B	PF00145	e4fsxB3	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: PF00145	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	2.30.30.490	Mainly Beta	Roll	SH3 type barrels.	Bromo adjacent homology (BAH) domain	CATH (4.3.0)
A	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
A	3.90.120.10	Alpha Beta	Alpha-Beta Complex	DNA Methylase	Chain A, domain 2	CATH (4.3.0)
B	2.30.30.490	Mainly Beta	Roll	SH3 type barrels.	Bromo adjacent homology (BAH) domain	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)
B	3.90.120.10	Alpha Beta	Alpha-Beta Complex	DNA Methylase	Chain A, domain 2	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF01426	BAH domain (BAH)	BAH domain	This domain has been called BAH (Bromo adjacent homology) domain and has also been called ELM1 and BAM (Bromo adjacent motif) domain. The function of this domain is unknown but may be involved in protein-protein interaction [3].	Domain
A, B	PF00385	Chromo (CHRromatin Organisation MOdifier) domain (Chromo)	Chromo (CHRromatin Organisation MOdifier) domain	-	Domain
A, B	PF00145	C-5 cytosine-specific DNA methylase (DNA_methylase)	C-5 cytosine-specific DNA methylase	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	DNA (cytosine-5)-methyltransferase 1	DNA binding binding organic cyclic compound binding nucleic acid binding DNA (cytosine-5-)-methyltransferase activity DNA-methyltransferase activity catalytic activity, acting on DNA transferase activity, transferring one-carbon groups catalytic activity, acting on a nucleic acid transferase activity methyltransferase activity S-adenosylmethionine-dependent methyltransferase activity catalytic activity protein-containing complex binding DNA binding binding organic cyclic compound binding nucleic acid binding DNA (cytosine-5-)-methyltransferase activity DNA-methyltransferase activity catalytic activity, acting on DNA transferase activity, transferring one-carbon groups catalytic activity, acting on a nucleic acid transferase activity methyltransferase activity S-adenosylmethionine-dependent methyltransferase activity catalytic activity protein-containing complex binding chromatin binding	protein-DNA complex organization cellular component organization protein-containing complex organization chromatin organization cellular process cellular component organization or biogenesis	membrane-bounded organelle intracellular organelle intracellular anatomical structure organelle nucleus intracellular membrane-bounded organelle cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR000953	Chromo/chromo shadow domain	Domain
A, B	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A, B	IPR023780	Chromo domain	Domain
A, B	IPR043151	Bromo adjacent homology (BAH) domain superfamily	Homologous Superfamily
A, B	IPR016197	Chromo-like domain superfamily	Homologous Superfamily
A, B	IPR001025	Bromo adjacent homology (BAH) domain	Domain
A, B	IPR018117	DNA methylase, C-5 cytosine-specific, active site	Active Site
A, B	IPR001525	C-5 cytosine methyltransferase	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.