1BQ6 - JenaLib

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Title :   CHALCONE SYNTHASE FROM ALFALFA WITH COENZYME A

Authors :   J. -L. Ferrer, M. E. Bowman, J. Jez, R. Dixon, J. P. Noel

Date :   21 Aug 98 (Deposition) - 11 Aug 99 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.56

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

Keywords :   Transferase, Polyketide Synthase, Chalcone Biosynthesis (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   J. L. Ferrer, J. M. Jez, M. E. Bowman, R. A. Dixon, J. P. Noel
Structure Of Chalcone Synthase And The Molecular Basis Of Plant Polyketide Biosynthesis.
Nat. Struct. Biol. V. 6 775 1999
PubMed-ID: 10426957 | Reference-DOI: 10.1038/11553

Molecule 1 - CHALCONE SYNTHASE
	Chains	:	A
	EC Number	:	2.3.1.74
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21
	Expression System Plasmid	:	PET28B
	Expression System Strain	:	BL21
	Expression System Taxid	:	511693
	Organism Scientific	:	MEDICAGO SATIVA
	Organism Taxid	:	3879
	Synonym	:	CHS
	Tissue	:	21 DAY OLD ROOT NODULE

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

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (3, 3)

No.	Name	Count	Type	Full Name
1	COA	1	Ligand/Ion	COENZYME A
2	CSD	1	Mod. Amino Acid	3-SULFINOALANINE
3	SO4	1	Ligand/Ion	SULFATE ION

Biological Unit 1 (3, 6)

No.	Name	Count	Type	Full Name
1	COA	2	Ligand/Ion	COENZYME A
2	CSD	2	Mod. Amino Acid	3-SULFINOALANINE
3	SO4	2	Ligand/Ion	SULFATE ION

Asymmetric Unit (3, 3)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	VAL A:2 , SER A:3 , VAL A:4 , SER A:5 , ARG A:385 , HOH A:651	BINDING SITE FOR RESIDUE SO4 A 391
2	AC2	SOFTWARE	LYS A:55 , ARG A:58 , MET A:59 , LYS A:62 , CSD A:164 , VAL A:210 , LEU A:214 , PHE A:265 , LEU A:267 , VAL A:271 , GLY A:305 , GLY A:306 , PRO A:307 , ALA A:308 , ASN A:336 , HOH A:620 , HOH A:720 , HOH A:730	BINDING SITE FOR RESIDUE COA A 390
3	CYS	UNKNOWN	CSD A:164	CATALYTIC SITE

(no "SS Bond" information available for 1BQ6)

Asymmetric Unit

No.	Residues
1	Met A:137	-	Pro A:138
2	Gly A:376	-	Leu A:377

(no "SAP(SNP)/Variant" information available for 1BQ6)

Asymmetric Unit (1, 1)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CHALCONE_SYNTH	PS00441	Chalcone and stilbene synthases active site.	CHS2_MEDSA	156-172	1	A:156-172

Biological Unit 1 (1, 2)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	CHALCONE_SYNTH	PS00441	Chalcone and stilbene synthases active site.	CHS2_MEDSA	156-172	2	A:156-172

(no "Exon" information available for 1BQ6)

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
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Chain A from PDB  Type:PROTEIN  Length:388
 aligned with CHS2_MEDSA | P30074 from UniProtKB/Swiss-Prot  Length:389

    Alignment length:388
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381        
           CHS2_MEDSA     2 VSVSEIRKAQRAEGPATILAIGTANPANCVEQSTYPDFYFKITNSEHKTELKEKFQRMCDKSMIKRRYMYLTEEILKENPNVCEYMAPSLDARQDMVVVEVPRLGKEAAVKAIKEWGQPKSKITHLIVCTTSGVDMPGADYQLTKLLGLRPYVKRYMMYQQGCFAGGTVLRLAKDLAENNKGARVLVVCSEVTAVTFRGPSDTHLDSLVGQALFGDGAAALIVGSDPVPEIEKPIFEMVWTAQTIAPDSEGAIDGHLREAGLTFHLLKDVPGIVSKNITKALVEAFEPLGISDYNSIFWIAHPGGPAILDQVEQKLALKPEKMNATREVLSEYGNMSSACVLFILDEMRKKSTQNGLKTTGEGLEWGVLFGFGPGLTIETVVLRSVAI 389
               SCOP domains d1bq6a1 A:2-235 Chalcone synthase                                                                                                                                                                                                         d1bq6a2 A:236-389 Chalcone synthase                                                                                                                        SCOP domains
               CATH domains 1bq6A01 A:2-235  [code=3.40.47.10, no name defined]                                                                                                                                                                                       1bq6A02 A:236-389  [code=3.40.47.10, no name defined]                                                                                                      CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhh......eeeeeeee....eee...hhhhhhhh......hhhhhhhhhhhhh....eee....hhhhhh.hhhh......hhhhhhhhhhhhhhhhhhhhhhhhhhh...hhh..eeeeee........hhhhhhhhh......eeeeee.....hhhhhhhhhhhhhh.....eeeeeeee.hhh.........hhhhhhhhh...eeeeeeee...........eeeeeeeeee........................hhhhhhhhhhhhhhhhhhhh........eeee....hhhhhhhhhhh...hhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhh...........eeeeeeee...eeeeeeeee... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------CHALCONE_SYNTH   ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1bq6 A   2 VSVSEIRKAQRAEGPATILAIGTANPANCVEQSTYPDFYFKITNSEHKTELKEKFQRMCDKSMIKRRYMYLTEEILKENPNVCEYMAPSLDARQDMVVVEVPRLGKEAAVKAIKEWGQPKSKITHLIVCTTSGVDMPGADYQLTKLLGLRPYVKRYMMYQQGcFAGGTVLRLAKDLAENNKGARVLVVCSEVTAVTFRGPSDTHLDSLVGQALFGDGAAALIVGSDPVPEIEKPIFEMVWTAQTIAPDSEGAIDGHLREAGLTFHLLKDVPGIVSKNITKALVEAFEPLGISDYNSIFWIAHPGGPAILDQVEQKLALKPEKMNATREVLSEYGNMSSACVLFILDEMRKKSTQNGLKTTGEGLEWGVLFGFGPGLTIETVVLRSVAI 389
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161  |    171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351       361       371       381        
                                                                                                                                                                                            164-CSD

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(

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Folds(

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Superfamilies( (-)

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Families(

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Protein Domains( (-)

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Organisms( (-)

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Class: Alpha and beta proteins (a/b) (23833)

Fold: Thiolase-like (231)

Superfamily: Thiolase-like (231)

Family: Chalcone synthase-like (56)

Protein domain: Chalcone synthase (16)

Alfalfa (Medicago sativa) [TaxId: 3879] (16)

1a	d1bq6a1	A:2-235
1b	d1bq6a2	A:236-389

Asymmetric Unit

Classes(

)

Architectures( (-)

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Topologies( (-)

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Homologous Superfamilies( (-)

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Organisms( (-)

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Class: Alpha Beta (26913)

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

Topology: Peroxisomal Thiolase; Chain A, domain 1 (130)

Homologous Superfamily: [code=3.40.47.10, no name defined] (130)

Medicago sativa. Organism_taxid: 3879. (8)

1a	1bq6A02	A:236-389
1b	1bq6A01	A:2-235

(no "Pfam Domain" information available for 1BQ6)

Asymmetric Unit(hide GO term definitions)

Chain A (CHS2_MEDSA | P30074)

molecular function
	GO:0003824	catalytic activity	Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
	GO:0016210	naringenin-chalcone synthase activity	Catalysis of the reaction: 3 malonyl-CoA + 4-coumaroyl-CoA = 4 CoA + naringenin chalcone + 3 CO2.
	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.
	GO:0016746	transferase activity, transferring acyl groups	Catalysis of the transfer of an acyl group from one compound (donor) to another (acceptor).
	GO:0016747	transferase activity, transferring acyl groups other than amino-acyl groups	Catalysis of the transfer of an acyl group, other than amino-acyl, from one compound (donor) to another (acceptor).
biological process
	GO:0009058	biosynthetic process	The chemical reactions and pathways resulting in the formation of substances; typically the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.
	GO:0009715	chalcone biosynthetic process	The chemical reactions and pathways resulting in the formation of chalcone, phenyl steryl ketone or its hydroxylated derivatives.
	GO:0009813	flavonoid biosynthetic process	The chemical reactions and pathways resulting in the formation of flavonoids, a group of phenolic derivatives containing a flavan skeleton.
	GO:0008152	metabolic process	The chemical reactions and pathways, including anabolism and catabolism, by which living organisms transform chemical substances. Metabolic processes typically transform small molecules, but also include macromolecular processes such as DNA repair and replication, and protein synthesis and degradation.

Asymmetric Unit
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		Met A:137 - Pro A:138	[ RasMol ]

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