Annotations: 1ZG3

Crystal structure of the isoflavanone 4'-O-methyltransferase complexed with SAH and 2,7,4'-trihydroxyisoflavanone

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1zg3a1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	automated matches	automated matches	barrel medic (Medicago truncatula ) [TaxId: 3880 ],	SCOPe (2.08)
A	d1zg3a2	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	automated matches	automated matches	barrel medic (Medicago truncatula ) [TaxId: 3880 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	Plant O-methyltransferase-like	8081397	4000240	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8093271	3000118	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Winged helix DNA-binding domain	8093270	3000034	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	Cupin_2	e1zg3A3	A: beta barrels	X: DEATH domain	H: 40S ribosomal protein S13 N-terminal domain	T: 40S ribosomal protein S13 N-terminal domain	F: Cupin_2	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	1.10.10.10	Mainly Alpha	Orthogonal Bundle	Arc Repressor Mutant, subunit A	Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding 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)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	isoflavanone 4'-O-methyltransferase	transferase activity, transferring one-carbon groups transferase activity 2,7,4'-trihydroxyisoflavanone-4'-O-methyltransferase activity methyltransferase activity catalytic activity O-methyltransferase activity protein binding binding protein dimerization activity S-adenosylmethionine-dependent methyltransferase activity isoflavone 4'-O-methyltransferase activity	methylation metabolic process cellular process phenylpropanoid metabolic process isoflavonoid metabolic process isoflavonoid biosynthetic process phytoalexin biosynthetic process isoflavonoid phytoalexin biosynthetic process phenylpropanoid biosynthetic process secondary metabolic process secondary metabolite biosynthetic process biosynthetic process toxin biosynthetic process phytoalexin metabolic process methylation metabolic process cellular process phenylpropanoid metabolic process isoflavonoid metabolic process isoflavonoid biosynthetic process phytoalexin biosynthetic process isoflavonoid phytoalexin biosynthetic process phenylpropanoid biosynthetic process secondary metabolic process secondary metabolite biosynthetic process biosynthetic process toxin biosynthetic process phytoalexin metabolic process toxin metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR012967	Caffeic acid 3-O-methyltransferase-like, dimerisation domain	Domain
A	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A	IPR016461	O-methyltransferase-like	Family
A	IPR001077	O-methyltransferase, C-terminal domain	Domain
A	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily

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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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.