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(-) Description

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

(-) Compounds

Molecule 1 - CHALCONE SYNTHASE
    ChainsA
    EC Number2.3.1.74
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21
    Expression System PlasmidPET28B
    Expression System StrainBL21
    Expression System Taxid511693
    Organism ScientificMEDICAGO SATIVA
    Organism Taxid3879
    SynonymCHS
    Tissue21 DAY OLD ROOT NODULE

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 3)

Asymmetric Unit (3, 3)
No.NameCountTypeFull Name
1COA1Ligand/IonCOENZYME A
2CSD1Mod. Amino Acid3-SULFINOALANINE
3SO41Ligand/IonSULFATE ION
Biological Unit 1 (3, 6)
No.NameCountTypeFull Name
1COA2Ligand/IonCOENZYME A
2CSD2Mod. Amino Acid3-SULFINOALANINE
3SO42Ligand/IonSULFATE ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREVAL A:2 , SER A:3 , VAL A:4 , SER A:5 , ARG A:385 , HOH A:651BINDING SITE FOR RESIDUE SO4 A 391
2AC2SOFTWARELYS 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:730BINDING SITE FOR RESIDUE COA A 390
3CYSUNKNOWNCSD A:164CATALYTIC SITE

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (2, 2)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 1)

Asymmetric Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CHALCONE_SYNTHPS00441 Chalcone and stilbene synthases active site.CHS2_MEDSA156-172  1A:156-172
Biological Unit 1 (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1CHALCONE_SYNTHPS00441 Chalcone and stilbene synthases active site.CHS2_MEDSA156-172  2A:156-172

(-) Exons   (0, 0)

(no "Exon" information available for 1BQ6)

(-) Sequences/Alignments

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: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)
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  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 '|'

 Classification and Annotation

(-) SCOP Domains  (1, 2)

Asymmetric Unit

(-) CATH Domains  (1, 2)

Asymmetric Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (9, 9)

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.

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  2.3.1.74
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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        CHS2_MEDSA | P300741bi5 1cgk 1cgz 1chw 1cml 1d6f 1d6h 1d6i 1i86 1i88 1i89 1i8b 1jwx 1u0v 1u0w

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