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(-) Description

Title :  CRYSTAL STRUCTURE OF CHAPERONE HSP31
 
Authors :  P. M. Quigley, K. Korotkov, F. Baneyx, W. G. J. Hol
Date :  04 Nov 02  (Deposition) - 18 Mar 03  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Alpha-Beta Sandwich, Chaperone (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  P. M. Quigley, K. Korotkov, F. Baneyx, W. G. J. Hol
The 1. 6A Crystal Structure Of The Class Of Chaperone Represented By Escherichia Coli Hsp31 Reveals A Putative Catalytic Triad
Proc. Natl. Acad. Sci. Usa V. 100 3137 2003
PubMed-ID: 12621151  |  Reference-DOI: 10.1073/PNAS.0530312100
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CHAPERONE HSP31
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI BL21(DE3)
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System Vector TypePET22B(+)
    GeneHCHA/YEDU
    Organism ScientificESCHERICHIA COLI
    Organism Taxid562
    SynonymPROTEIN YEDU

 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, 8)

Asymmetric Unit (2, 8)
No.NameCountTypeFull Name
1MG1Ligand/IonMAGNESIUM ION
2MSE7Mod. Amino AcidSELENOMETHIONINE
Biological Unit 1 (1, 14)
No.NameCountTypeFull Name
1MG-1Ligand/IonMAGNESIUM ION
2MSE14Mod. Amino AcidSELENOMETHIONINE

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHOH A:1210 , HOH A:1235 , HOH A:1236 , HOH A:1237 , HOH A:1238 , HOH A:1291BINDING SITE FOR RESIDUE MG A 2252

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1N57)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Ala A:282 -Gly A:283

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1N57)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1N57)

(-) Exons   (0, 0)

(no "Exon" information available for 1N57)

(-) 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:279
 aligned with HCHA_ECOLI | P31658 from UniProtKB/Swiss-Prot  Length:283

    Alignment length:279
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274         
           HCHA_ECOLI     5 TSKNPQVDIAEDNAFFPSEYSLSQYTSPVSDLDGVDYPKPYRGKHKILVIAADERYLPTDNGKLFSTGNHPIETLLPLYHLHAAGFEFEVATISGLMTKFEYWAMPHKDEKVMPFFEQHKSLFRNPKKLADVVASLNADSEYAAIFVPGGHGALIGLPESQDVAAALQWAIKNDRFVISLCHGPAAFLALRHGDNPLNGYSICAFPDAADKQTPEIGYMPGHLTWYFGEELKKMGMNIINDDITGRVHKDRKLLTGDSPFAANALGKLAAQEMLAAYAG 283
               SCOP domains d1n57a_ A: HSP31 (HchA; YedU)                                                                                                                                                                                                                                                           SCOP domains
               CATH domains 1n57A00 A:5-283  [code=3.40.50.880, no name defined]                                                                                                                                                                                                                                    CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....ee......eee.hhhhhhhhh...................eeeee.....eee.....eee...hhhhhhhhhhhhhhh...eeeee........hhhhh.....hhhhhhhhhhhhhhh.eehhhhhhh......eeeeee..hhhhhhhhhhhhhhhhhhhhhhhh..eeeee.hhhhhhhhhh.........ee...hhhhhhh.............hhhhhhhhh..ee........eeee..eeee.hhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1n57 A   5 TSKNPQVDIAEDNAFFPSEYSLSQYTSPVSDLDGVDYPKPYRGKHKILVIAADERYLPTDNGKLFSTGNHPIETLLPLYHLHAAGFEFEVATISGLmTKFEYWAmPHKDEKVmPFFEQHKSLFRNPKKLADVVASLNADSEYAAIFVPGGHGALIGLPESQDVAAALQWAIKNDRFVISLCHGPAAFLALRHGDNPLNGYSICAFPDAADKQTPEIGYmPGHLTWYFGEELKKmGmNIINDDITGRVHKDRKLLTGDSPFAANALGKLAAQEmLAAYAG 283
                                    14        24        34        44        54        64        74        84        94      |104    |  114  |    124       134       144       154       164       174       184       194       204       214       224       234   | | 244       254       264       274  |      
                                                                                                                          101-MSE 109-MSE 117-MSE                                                                                                   223-MSE        238-MSE                                277-MSE  
                                                                                                                                                                                                                                                                     240-MSE                                       

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  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric Unit

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1N57)

(-) Gene Ontology  (16, 16)

Asymmetric Unit(hide GO term definitions)
Chain A   (HCHA_ECOLI | P31658)
molecular function
    GO:0019172    glyoxalase III activity    Catalysis of the reaction: methylglyoxal + H2O = D-lactate.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0016811    hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in linear amides    Catalysis of the hydrolysis of any non-peptide carbon-nitrogen bond in a linear amide.
    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.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0016790    thiolester hydrolase activity    Catalysis of the reaction: RCO-SR' + H2O = RCOOH + HSR'. This reaction is the hydrolysis of a thiolester bond, an ester formed from a carboxylic acid and a thiol (i.e., RCO-SR'), such as that found in acetyl-coenzyme A.
    GO:0008270    zinc ion binding    Interacting selectively and non-covalently with zinc (Zn) ions.
biological process
    GO:0019249    lactate biosynthetic process    The chemical reactions and pathways resulting in the formation of lactate, the anion of lactic acid.
    GO:0019243    methylglyoxal catabolic process to D-lactate via S-lactoyl-glutathione    The chemical reactions and pathways resulting in the breakdown of methylglyoxal, CH3-CO-CHO, into D-lactate via the intermediate S-lactoyl-glutathione. Glutathione is used in the first step of the pathway and then regenerated in the second step.
    GO:0042026    protein refolding    The process carried out by a cell that restores the biological activity of an unfolded or misfolded protein, using helper proteins such as chaperones.
    GO:0030091    protein repair    The process of restoring a protein to its original state after damage by such things as oxidation or spontaneous decomposition of residues.
    GO:0010447    response to acidic pH    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a pH stimulus with pH < 7. pH is a measure of the acidity or basicity of an aqueous solution.
    GO:0051595    response to methylglyoxal    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a methylglyoxal stimulus. Methylglyoxal is a 2-oxoaldehyde derived from propanal.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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 Related Entries

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

UniProtKB/Swiss-Prot
        HCHA_ECOLI | P316581izy 1izz 1ons 1pv2

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1N57)