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(-) Description

Title :  CRYSTAL STRUCTURE OF PUTATIVE ACETOLACTATE SYNTHASE- SMALL SUBUNIT FROM NITROSOMONAS EUROPAEA
 
Authors :  J. J. Petkowski, M. Chruszcz, M. D. Zimmerman, H. Zheng, M. T. Cymborows T. Skarina, O. Onopriyenko, A. Savchenko, A. Edwards, W. Minor, A. Joa Midwest Center For Structural Genomics (Mcsg)
Date :  29 Mar 07  (Deposition) - 10 Apr 07  (Release) - 01 Feb 12  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.50
Chains :  Asym. Unit :  A,B,C,D
Biol. Unit 1:  A,C  (1x)
Biol. Unit 2:  B,D  (1x)
Keywords :  Acetolactate Synthase, Regulatory Subunit, Structural Genomics, Psi, Protein Structure Initiative, Midwest Center For Structural Genomics, Mcsg, Lyase (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 - PROBABLE ACETOLACTATE SYNTHASE ISOZYME III (SMALL SUBUNIT)
    ChainsA, B, C, D
    EC Number4.1.3.18
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET15B
    Expression System StrainBL21-GOLD(DE3)
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneILVH, NE1324
    Organism ScientificNITROSOMONAS EUROPAEA ATCC 19718
    Organism Taxid228410
    StrainIFO 14298

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit ABCD
Biological Unit 1 (1x)A C 
Biological Unit 2 (1x) B D

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 26)

Asymmetric Unit (3, 26)
No.NameCountTypeFull Name
1CA3Ligand/IonCALCIUM ION
2MSE20Mod. Amino AcidSELENOMETHIONINE
3UNL3Ligand/IonUNKNOWN LIGAND
Biological Unit 1 (2, 11)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2MSE10Mod. Amino AcidSELENOMETHIONINE
3UNL1Ligand/IonUNKNOWN LIGAND
Biological Unit 2 (2, 12)
No.NameCountTypeFull Name
1CA-1Ligand/IonCALCIUM ION
2MSE10Mod. Amino AcidSELENOMETHIONINE
3UNL2Ligand/IonUNKNOWN LIGAND

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN A:65 , LEU A:67 , VAL A:70 , HOH A:441 , HOH A:442BINDING SITE FOR RESIDUE CA A 301
2AC2SOFTWAREASN C:65 , LEU C:67 , VAL C:70BINDING SITE FOR RESIDUE CA C 302
3AC3SOFTWAREASN B:65 , LEU B:67 , VAL B:70 , HOH B:440BINDING SITE FOR RESIDUE CA B 303
4AC4SOFTWAREPHE A:108 , ILE C:112 , ILE C:113BINDING SITE FOR RESIDUE UNL A 401
5AC5SOFTWAREPHE B:108 , LYS B:130 , ARG B:156 , ILE D:113 , VAL D:115BINDING SITE FOR RESIDUE UNL B 402
6AC6SOFTWAREILE A:112 , ILE A:113 , ASP A:114 , ARG C:156 , HOH C:325 , ILE D:107 , PHE D:108 , HOH D:411 , HOH D:420 , HOH D:427BINDING SITE FOR RESIDUE UNL D 403

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2PC6)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2PC6)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2PC6)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2PC6)

(-) Exons   (0, 0)

(no "Exon" information available for 2PC6)

(-) 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:164
 aligned with Q82UZ2_NITEU | Q82UZ2 from UniProtKB/TrEMBL  Length:163

    Alignment length:164
                             1                                                                                                                                                                  
                             |       9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159    
         Q82UZ2_NITEU     - -MRHIISLLMENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRMTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELMLVKVRAVGKDREEMKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
               SCOP domains d2pc6a2 A:0-77 Acetolactate synthase small subunit, IlvH                      d2pc6a1 A:78-163 Acetolactate synthase small subunit, IlvH                             SCOP domains
               CATH domains 2pc6A01 A:0-79  [code=3.30.70.260, no name defined]                             ------------------------------------------------------------------------------------ CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeeee...hhhhhhhhhhhhh.....eeeeee.....eeeeeeeeeehhhhhhhhhhhhhhh..eeeeee.hhh.eeeeeeeeeeee..hhhhhhhhhhhhhh..eeeeee..eeeeeeeehhhhhhhhhhhhhhh.eeeeee...eeee........ Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pc6 A   0 HmRHIISLLmENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRmTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELmLVKVRAVGKDREEmKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
                             |       9        19        29        39      | 49        59        69        79       |89        99 |     109       119       129       139       149       159    
                             |       9-MSE                               46-MSE                                   87-MSE       101-MSE                                                          
                             1-MSE                                                                                                                                                              

Chain B from PDB  Type:PROTEIN  Length:163
 aligned with Q82UZ2_NITEU | Q82UZ2 from UniProtKB/TrEMBL  Length:163

    Alignment length:163
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160   
         Q82UZ2_NITEU     1 MRHIISLLMENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRMTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELMLVKVRAVGKDREEMKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
               SCOP domains d2pc6b2 B:1-77 Acetolactate synthase small subunit, IlvH                     d2pc6b1 B:78-163 Acetolactate synthase small subunit, IlvH                             SCOP domains
               CATH domains -2pc6B01 B:2-79  [code=3.30.70.260, no name defined]                           ------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeeeeee.hhhhhhhhhhhhhhhh....eeeeee.....eeeeeeeee.hhhhhhhhhhhhhhh..eeeeee.hhh.eeeeeeeeeeee..hhhhhhhhhhhhhh..eeeee...eeeeeeeehhhhhhhhhhhhhhh.eeeeee...eeee........ Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pc6 B   1 mRHIISLLmENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRmTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELmLVKVRAVGKDREEmKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
                            |       10        20        30        40     |  50        60        70        80      | 90       100|      110       120       130       140       150       160   
                            1-MSE   9-MSE                               46-MSE                                   87-MSE       101-MSE                                                          

Chain C from PDB  Type:PROTEIN  Length:164
 aligned with Q82UZ2_NITEU | Q82UZ2 from UniProtKB/TrEMBL  Length:163

    Alignment length:164
                             1                                                                                                                                                                  
                             |       9        19        29        39        49        59        69        79        89        99       109       119       129       139       149       159    
         Q82UZ2_NITEU     - -MRHIISLLMENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRMTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELMLVKVRAVGKDREEMKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
               SCOP domains d2pc6c2 C:0-77 Acetolactate synthase small subunit, IlvH                      d2pc6c1 C:78-163 Acetolactate synthase small subunit, IlvH                             SCOP domains
               CATH domains 2pc6C01 C:0-79  [code=3.30.70.260, no name defined]                             ------------------------------------------------------------------------------------ CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeeeeeee....hhhhhhhhhhhh...eeeeeeee.....eeeeeeeee.hhhhhhhhhhhhhh...eeeeee.hhh.eeeeeeeeeeee..hhhhhhhhhhhhhhh.eeeee...eeeeeeeehhhhhhhhhhhh....eeeeee...eeee........ Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pc6 C   0 HmRHIISLLmENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRmTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELmLVKVRAVGKDREEmKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
                             |       9        19        29        39      | 49        59        69        79       |89        99 |     109       119       129       139       149       159    
                             1-MSE   9-MSE                               46-MSE                                   87-MSE       101-MSE                                                          

Chain D from PDB  Type:PROTEIN  Length:162
 aligned with Q82UZ2_NITEU | Q82UZ2 from UniProtKB/TrEMBL  Length:163

    Alignment length:163
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160   
         Q82UZ2_NITEU     1 MRHIISLLMENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRMTLVTNGPDEIVEQITKQLNKLIEVVKLIDLSSEGYVERELMLVKVRAVGKDREEMKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
               SCOP domains d2pc6d2 D:1-77 Acetolactate synthase small subunit, IlvH                     d2pc6d1 D:78-163 Acetolactate synthase small subunit, IlvH                             SCOP domains
               CATH domains -2pc6D01 D:2-79  [code=3.30.70.260, no name defined]                           ------------------------------------------------------------------------------------ CATH domains
           Pfam domains (1) ----------ACT_5-2pc6D01 D:11-73                                          ---------ALS_ss_C-2pc6D05 D:83-157                                                  ------ Pfam domains (1)
           Pfam domains (2) ----------ACT_5-2pc6D02 D:11-73                                          ---------ALS_ss_C-2pc6D06 D:83-157                                                  ------ Pfam domains (2)
           Pfam domains (3) ----------ACT_5-2pc6D03 D:11-73                                          ---------ALS_ss_C-2pc6D07 D:83-157                                                  ------ Pfam domains (3)
           Pfam domains (4) ----------ACT_5-2pc6D04 D:11-73                                          ---------ALS_ss_C-2pc6D08 D:83-157                                                  ------ Pfam domains (4)
         Sec.struct. author ..eeeeeeee..hhhhhhhhhhhhhh.....eeeeee.....eeeeeeee....hhhhhhhhhhh...-..eeehhhhh.eeeeeeeeeeee..hhhhhhhhhhhhhh..eeeeee..eeeeeeeehhhhhhhhhhhhhhh.eeeeeeeeeeeee........ Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pc6 D   1 mRHIISLLmENEAGALSRVAGLFSARGYNIESLSVAPTEDPTLSRmTLVTNGPDEIVEQITKQLNKLI-VVKLIDLSSEGYVERELmLVKVRAVGKDREEmKRLADIFRGNIIDVTNELYTIELTGTRSKLDGFLQAVDCNLILEIARTGVSGLSRGERVLKL 163
                            |       10        20        30        40     |  50        60       |70        80      | 90       100|      110       120       130       140       150       160   
                            1-MSE   9-MSE                               46-MSE                68 |               87-MSE       101-MSE                                                          
                                                                                                70                                                                                             

   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 '|'

 Classification and Annotation

(-) SCOP Domains  (1, 8)

Asymmetric Unit

(-) CATH Domains  (1, 4)

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

(-) Pfam Domains  (2, 8)

Asymmetric Unit
(-)
Clan: ACT (34)

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A,B,C,D   (Q82UZ2_NITEU | Q82UZ2)
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:0016829    lyase activity    Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
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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 Related Entries

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(-) Related Entries Specified in the PDB File

2fgc CRYSTAL STRUCTURE OF ACETOLACTATE SYNTHASE - SMALL SUBUNIT FROM THERMOTOGA MARITIMA
2fgd CRYSTAL STRUCTURE OF PUTATIVE ACETOLACTATE SYNTHASE - SMALL SUBUNIT FROM NITROSOMONAS EUROPAEA