Annotations: 4PGG

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d4pgga1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	automated matches	automated matches	Sorghum (Sorghum bicolor ) [TaxId: 4558 ],	SCOPe (2.08)
A	d4pgga2	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	automated matches	automated matches	Sorghum (Sorghum bicolor ) [TaxId: 4558 ],	SCOPe (2.08)
A	d4pgga3	Artifacts	Tags	Tags	Tags	N-terminal Tags	Sorghum (Sorghum bicolor ) [TaxId: 4558 ],	SCOPe (2.08)
B	d4pggb1	All alpha proteins	DNA/RNA-binding 3-helical bundle	'Winged helix' DNA-binding domain	automated matches	automated matches	Sorghum (Sorghum bicolor ) [TaxId: 4558 ],	SCOPe (2.08)
B	d4pggb2	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	automated matches	automated matches	Sorghum (Sorghum bicolor ) [TaxId: 4558 ],	SCOPe (2.08)
B	d4pggb3	Artifacts	Tags	Tags	Tags	N-terminal Tags	Sorghum (Sorghum bicolor ) [TaxId: 4558 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	Winged helix DNA-binding domain	8093272	3000034	SCOP2B (2022-06-29)
A	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8093273	3000118	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8093273	3000118	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Winged helix DNA-binding domain	8093272	3000034	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	Dimerisation	e4pggA1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Dimerisation	ECOD (1.6)
A	Methyltransf_11_4	e4pggA2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Methyltransf_11_4	ECOD (1.6)
B	Dimerisation	e4pggB1	A: alpha arrays	X: HTH	H: HTH	T: winged	F: Dimerisation	ECOD (1.6)
B	Methyltransf_11_4	e4pggB2	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Methyltransf_11_4	ECOD (1.6)

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)
B	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)
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, B	PF08100	Dimerisation domain (Dimerisation)	Dimerisation domain	This domain is found at the N-terminus of a variety of plant O-methyltransferases. It has been shown to mediate dimerisation of these proteins [1].	Domain
A, B	PF00891	O-methyltransferase domain (Methyltransf_2)	O-methyltransferase domain	This family includes a range of O-methyltransferases. These enzymes utilise S-adenosyl methionine.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Caffeic acid O-methyltransferase	transferase activity, transferring one-carbon groups transferase activity methyltransferase activity S-adenosylmethionine-dependent methyltransferase activity catalytic activity O-methyltransferase activity acetylserotonin O-methyltransferase activity caffeate O-methyltransferase activity luteolin O-methyltransferase activity protein binding binding protein dimerization activity	organonitrogen compound metabolic process regulation of hormone levels biological regulation organonitrogen compound biosynthetic process indole-containing compound metabolic process amide biosynthetic process hormone metabolic process melatonin metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process indole-containing compound biosynthetic process organic cyclic compound biosynthetic process organic substance biosynthetic process organonitrogen compound metabolic process regulation of hormone levels biological regulation organonitrogen compound biosynthetic process indole-containing compound metabolic process amide biosynthetic process hormone metabolic process melatonin metabolic process organic cyclic compound metabolic process organic substance metabolic process biosynthetic process indole-containing compound biosynthetic process organic cyclic compound biosynthetic process organic substance biosynthetic process metabolic process amide metabolic process regulation of biological quality melatonin biosynthetic process hormone biosynthetic process methylation phenylpropanoid metabolic process phenylpropanoid biosynthetic process lignin metabolic process secondary metabolic process secondary metabolite biosynthetic process lignin biosynthetic process pigment metabolic process flavonoid metabolic process organic hydroxy compound metabolic process pigment biosynthetic process flavonol biosynthetic process flavonoid biosynthetic process organic hydroxy compound biosynthetic process flavonol metabolic process flavone biosynthetic process flavone metabolic process	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR001077	O-methyltransferase domain	Domain
A, B	IPR016461	O-methyltransferase COMT-type	Family
A, B	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A, B	IPR036388	Winged helix-like DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR036390	Winged helix DNA-binding domain superfamily	Homologous Superfamily
A, B	IPR012967	Plant methyltransferase dimerisation domain	Domain
A, B	IPR022657	Orn/DAP/Arg decarboxylase 2, conserved site	Conserved Site

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.