1FP2 - JenaLib

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Title :   CRYSTAL STRUCTURE ANALYSIS OF ISOFLAVONE O-METHYLTRANSFERASE

Authors :   C. Zubieta, R. A. Dixon, J. P. Noel

Date :   29 Aug 00 (Deposition) - 07 Mar 01 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.40

Chains :   Asym. Unit : A
Biol. Unit 1: A  (2x)

Keywords :   Protein-Product Complex, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   C. Zubieta, X. Z. He, R. A. Dixon, J. P. Noel
Structures Of Two Natural Product Methyltransferases Reveal The Basis For Substrate Specificity In Plant O-Methyltransferases.
Nat. Struct. Biol. V. 8 271 2001
PubMed-ID: 11224575 | Reference-DOI: 10.1038/85029

Molecule 1 - ISOFLAVONE O-METHYLTRANSFERASE
	Chains	:	A
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Expression System Vector	:	PET15B
	Expression System Vector Type	:	PLASMID
	Organism Scientific	:	MEDICAGO SATIVA
	Organism Taxid	:	3879

		1
Asymmetric Unit	:	A
Biological Unit 1 (2x)	:	A

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (2, 2)

No.	Name	Count	Type	Full Name
1	HMO	1	Ligand/Ion	4'-HYDROXY-7-METHOXYISOFLAVONE
2	SAH	1	Ligand/Ion	S-ADENOSYL-L-HOMOCYSTEINE

Biological Unit 1 (2, 4)

No.	Name	Count	Type	Full Name
1	HMO	2	Ligand/Ion	4'-HYDROXY-7-METHOXYISOFLAVONE
2	SAH	2	Ligand/Ion	S-ADENOSYL-L-HOMOCYSTEINE

Asymmetric Unit (2, 2)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	GLY A:196 , ASP A:219 , ARG A:220 , ASP A:239 , MET A:240 , PHE A:241 , LYS A:253 , ILE A:255 , HMO A:2000 , HOH A:2001 , HOH A:2002 , HOH A:2014 , HOH A:2026 , HOH A:2031 , HOH A:2039 , HOH A:2047 , HOH A:2054	BINDING SITE FOR RESIDUE SAH A 1699
2	AC2	SOFTWARE	TYR A:25 , VAL A:118 , LEU A:123 , SER A:124 , TYR A:127 , PHE A:164 , TYR A:254 , HIS A:257 , ASN A:258 , ASN A:310 , SAH A:1699	BINDING SITE FOR RESIDUE HMO A 2000

(no "SS Bond" information available for 1FP2)

(no "Cis Peptide Bond" information available for 1FP2)

(no "SAP(SNP)/Variant" information available for 1FP2)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAM_OMT_II	PS51683	SAM-dependent O-methyltransferase class II-type profile.	7OMT8_MEDSA	21-352	1	A:21-352

Biological Unit 1 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SAM_OMT_II	PS51683	SAM-dependent O-methyltransferase class II-type profile.	7OMT8_MEDSA	21-352	2	A:21-352

(no "Exon" information available for 1FP2)

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:345
 aligned with 7OMT8_MEDSA | O24529 from UniProtKB/Swiss-Prot  Length:352

    Alignment length:345
                                    17        27        37        47        57        67        77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347     
          7OMT8_MEDSA     8 RKPSEIFKAQALLYKHIYAFIDSMSLKWAVEMNIPNIIQNHGKPISLSNLVSILQVPSSKIGNVRRLMRYLAHNGFFEIITKEEESYALTVASELLVRGSDLCLAPMVECVLDPTLSGSYHELKKWIYEEDLTLFGVTLGSGFWDFLDKNPEYNTSFNDAMASDSKLINLALRDCDFVFDGLESIVDVGGGTGTTAKIICETFPKLKCIVFDRPQVVENLSGSNNLTYVGGDMFTSIPNADAVLLKYILHNWTDKDCLRILKKCKEAVTNDGKRGKVTIIDMVIDKKKDENQVTQIKLLMDVNMACLNGKERNEEEWKKLFIEAGFQHYKISPLTGFLSLIEIYP 352
               SCOP domains d1fp2a1 A:8-108 Isoflavone O-methyltransferase                                                       d1fp2a2 A:109-352 Isoflavone O-methyltransferase                                                                                                                                                                                                     SCOP domains
               CATH domains 1fp2A01 A:8-103 'winged helix' repressor DNA binding domain                                     1fp2A02 A:104-352 Vaccinia Virus protein VP39                                                                                                                                                                                                             CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..eehhhhhhhhh.hhhhhhhhhhhhhhhhhh..eeeee...eeeeehhhhhh........hhhhhhhhhhhhhhhh..hhhhhhh....hhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...eeeee....hhhhhhhhhhh...eeeeeehhhhhh.......eeeee...........eeeee.hhhhhhhhhhhhhhhhhhhhhhhhhh..eeeeee.ee.....hhhhhhhhhhhhhhhhhhh...eehhhhhhhhhhh...eeeeeeee..eeeeeee. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------SAM_OMT_II  PDB: A:21-352 UniProt: 21-352                                                                                                                                                                                                                                                                                                    PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1fp2 A   8 RKPSEIFKAQALLYKHIYAFIDSMSLKWAVEMNIPNIIQNHGKPISLSNLVSILQVPSSKIGNVRRLMRYLAHNGFFEIITKEEESYALTVASELLVRGSDLCLAPMVECVLDPTLSGSYHELKKWIYEEDLTLFGVTLGSGFWDFLDKNPEYNTSFNDAMASDSKLINLALRDCDFVFDGLESIVDVGGGTGTTAKIICETFPKLKCIVFDRPQVVENLSGSNNLTYVGGDMFTSIPNADAVLLKYILHNWTDKDCLRILKKCKEAVTNDGKRGKVTIIDMVIDKKKDENQVTQIKLLMDVNMACLNGKERNEEEWKKLFIEAGFQHYKISPLTGFLSLIEIYP 352
                                    17        27        37        47        57        67        77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317       327       337       347

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: Rossmann fold (7312)

Homologous Superfamily: Vaccinia Virus protein VP39 (378)

Medicago sativa. Organism_taxid: 3879. (5)

1fp2A02

A:104-352

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Arc Repressor Mutant, subunit A (1030)

Homologous Superfamily: 'winged helix' repressor DNA binding domain (507)

Medicago sativa. Organism_taxid: 3879. (5)

1fp2A01

A:8-103

(no "Pfam Domain" information available for 1FP2)

Asymmetric Unit(hide GO term definitions)

Chain A (7OMT8_MEDSA | O24529)

molecular function
	GO:0008171	O-methyltransferase activity	Catalysis of the transfer of a methyl group to the oxygen atom of an acceptor molecule.
	GO:0033800	isoflavone 7-O-methyltransferase activity	Catalysis of the reaction: S-adenosyl-L-methionine + a 7-hydroxyisoflavone = S-adenosyl-L-homocysteine + a 7-methoxyisoflavone.
	GO:0008168	methyltransferase activity	Catalysis of the transfer of a methyl group to an acceptor molecule.
	GO:0046983	protein dimerization activity	The formation of a protein dimer, a macromolecular structure consists of two noncovalently associated identical or nonidentical subunits.
	GO:0016740	transferase activity	Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
	GO:0032259	methylation	The process in which a methyl group is covalently attached to a molecule.

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Biological Unit
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		Biological Unit 1	[ Jena3D ]

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	7OMT8_MEDSA \| O24529	:	1fpx

1fp1	CRYSTAL STRUCTURE ANALYSIS OF CHALCONE O-METHYLTRANSFERASE
1fpq	CRYSTAL STRUCTURE ANALYSIS OF SELENOMETHIONINE SUBSTITUTED CHALCONE O-METHYLTRANSFERASE
1fpx	CRYSTAL STRUCTURE ANALYSIS OF SELENOMETHIONINE SUBSTITUTED ISOFLAVONE O-METHYLTRANSFERASE

Description

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