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(-) Description

Title :  CRYSTAL STRUCTURE OF ACETOLACTATE SYNTHASE- SMALL SUBUNIT FROM THERMOTOGA MARITIMA
 
Authors :  J. J. Petkowski, M. Chruszcz, M. D. Zimmerman, H. Zheng, M. T. Cymborows K. D. Koclega, M. Kudritska, W. Minor, Midwest Center For Structur Genomics (Mcsg)
Date :  21 Dec 05  (Deposition) - 07 Feb 06  (Release) - 24 Oct 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Acetolactate Synthase, Regulatory Subunit, Structural Genomics, Psi, Protein Structure Initiative, Midwest Center For Structural Genomics, Mcsg, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  J. J. Petkowski, M. Chruszcz, M. D. Zimmerman, H. Zheng, T. Skarina, O. Onopriyenko, M. T. Cymborowski, K. D. Koclega, A. Savchenko, A. Edwards, W. Minor
Crystal Structures Of Tm0549 And Ne1324--Two Orthologs Of E Coli Ahas Isozyme Iii Small Regulatory Subunit.
Protein Sci. V. 16 1360 2007
PubMed-ID: 17586771  |  Reference-DOI: 10.1110/PS.072793807

(-) Compounds

Molecule 1 - ACETOLACTATE SYNTHASE, SMALL SUBUNIT
    Chains: A
    EC Number: 2.2.1.6
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET15B(+)
    Expression System Strain: B834(DE3)PLYSS
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: THERMOTOGA MARITIMA
    Organism Taxid: 243274
    Strain: MSB8

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

Asymmetric Unit (2, 6)
No.NameCountTypeFull Name
1MG1Ligand/IonMAGNESIUM ION
2MSE5Mod. Amino AcidSELENOMETHIONINE
Biological Unit 1 (1, 10)
No.NameCountTypeFull Name
1MG-1Ligand/IonMAGNESIUM ION
2MSE10Mod. Amino AcidSELENOMETHIONINE

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHOH A:1012 , HOH A:1015 , HOH A:1023 , HOH A:1028 , HOH A:1033 , HOH A:1042BINDING SITE FOR RESIDUE MG A 1001

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2FGC)

(-) Cis Peptide Bonds  (0, 0)

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 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

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(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
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SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:161
 aligned with Q9WZ19_THEMA | Q9WZ19 from UniProtKB/TrEMBL  Length:171

    Alignment length:161
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164 
         Q9WZ19_THEMA     5 IREHLVSMLVHNKPGVMRKVANLFARRGFNISSITVGESETPGLSRLVIMVKGDDKTIEQIEKQAYKLVEVVKVTPIDPLPENRVEREMALIKVRFDEDKQEIFQLVEIFRGKIIDVSREGAIIEITGARSKVEAFINLLPQKQVEEIARTGIVAMNRWNV 165
               SCOP domains d2fgca2 A:27-104 Acetolactate synthase small subunit, IlvH                    d2fgca1 A:105-187 Acetolactate synthase small subunit, IlvH                         SCOP domains
               CATH domains 2fgcA01 A:27-102  [code=3.30.70.260, no name defined]                       ---------2fgcA03 A:112-187 ACT-like. Chain A, domain 2                                CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeeee...hhhhhhhhhhhh...eeeeeeeee.....eeeeeeeeee..hhhhhhhhhhh....eeeeee...hhh.eeeeeeeeeeee...hhhhhhhhhhhh..eeeee...eeeeeeeehhhhhhhhhhhhhhh.eeeeee...eeee.... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2fgc A  27 IREHLVSmLVHNKPGVmRKVANLFARRGFNISSITVGESETPGLSRLVImVKGDDKTIEQIEKQAYKLVEVVKVTPIDPLPENRVEREmALIKVRFDEDKQEIFQLVEIFRGKIIDVSREGAIIEITGARSKVEAFINLLPQKQVEEIARTGIVAmNRWNV 187
                                   |36      | 46        56        66        76        86        96       106       116       126       136       146       156       166       176     | 186 
                                  34-MSE   43-MSE                           76-MSE                                115-MSE                                                            182-MSE
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 Classification and Annotation

(-) SCOP Domains  (1, 2)

Asymmetric Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (2, 2)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2FGC)

(-) Gene Ontology  (5, 5)

Asymmetric Unit(hide GO term definitions)
Chain A   (Q9WZ19_THEMA | Q9WZ19)
molecular function
    GO:0003984    acetolactate synthase activity    Catalysis of the reaction: 2 pyruvate = 2-acetolactate + CO2.
    GO:0016597    amino acid binding    Interacting selectively and non-covalently with an amino acid, organic acids containing one or more amino substituents.
    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:0009082    branched-chain amino acid biosynthetic process    The chemical reactions and pathways resulting in the formation of amino acids containing a branched carbon skeleton, comprising isoleucine, leucine and valine.
    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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