Annotations: 3B5I

Crystal structure of Indole-3-acetic Acid Methyltransferase

External Resource: Annotation

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

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8100490	3000118	SCOP2B (2022-06-29)
A	SCOP2 Family	Salicylic acid carboxyl methyltransferase (SAMT)-like	8100489	4001150	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8100490	3000118	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)
B	Proteasome	e3b5iB1	A: beta barrels	X: HTH	H: Nudix	T: Nudix	F: Proteasome	ECOD (v294.2)
A	V-set	e3b5iA1	A: beta barrels	X: Profilin-like	H: sensor domains	T: sensor domains	F: V-set	ECOD (v294.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
B	1.10.1200.220	Mainly Alpha	Orthogonal Bundle	Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein	Chain A	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	1.10.1200.220	Mainly Alpha	Orthogonal Bundle	Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein	Chain A	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF03492	SAM dependent carboxyl methyltransferase (Methyltransf_7)	SAM dependent carboxyl methyltransferase	This family of plant methyltransferases contains enzymes that act on a variety of substrates including salicylic acid, jasmonic acid and 7-Methylxanthine. Caffeine is synthesised through sequential three-step methylation of xanthine derivatives at po ...	This family of plant methyltransferases contains enzymes that act on a variety of substrates including salicylic acid, jasmonic acid and 7-Methylxanthine. Caffeine is synthesised through sequential three-step methylation of xanthine derivatives at positions 7-N, 3-N, and 1-N. The protein 7-methylxanthine methyltransferase (designated as CaMXMT) catalyses the second step to produce theobromine [1].	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	S-adenosyl-L-methionine:salicylic acid carboxyl methyltransferase-like protein	cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding transferase activity, transferring one-carbon groups transferase activity methyltransferase activity S-adenosylmethionine-dependent methyltransferase activity catalytic activity indole-3-acetate carboxyl methyltransferase activity identical protein binding protein binding cation binding magnesium ion binding ion binding binding metal ion binding small molecule binding transferase activity, transferring one-carbon groups transferase activity methyltransferase activity S-adenosylmethionine-dependent methyltransferase activity catalytic activity indole-3-acetate carboxyl methyltransferase activity identical protein binding protein binding indole acetic acid carboxyl methyltransferase activity	methylation metabolic process cellular process biosynthetic process auxin metabolic process regulation of hormone levels auxin biosynthetic process biological regulation regulation of biological quality hormone biosynthetic process hormone metabolic process developmental process adaxial/abaxial axis specification multicellular organismal process methylation metabolic process cellular process biosynthetic process auxin metabolic process regulation of hormone levels auxin biosynthetic process biological regulation regulation of biological quality hormone biosynthetic process hormone metabolic process developmental process adaxial/abaxial axis specification multicellular organismal process polarity specification of adaxial/abaxial axis specification of axis polarity pattern specification process adaxial/abaxial pattern specification regionalization multicellular organism development anatomical structure development axis specification	-

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR042086	Methyltransferase, alpha-helical capping domain	Homologous Superfamily
A, B	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A, B	IPR005299	SAM dependent carboxyl methyltransferase	Family

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