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(-) Description

Title :  CRYSTAL STRUCTURE OF LUXS
 
Authors :  M. T. Hilgers, M. L. Ludwig
Date :  05 Apr 01  (Deposition) - 03 Oct 01  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Four Stranded Antiparallel Beta Sheet, Cysteine-Sulfonic Acid, Structural Genomics (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. T. Hilgers, M. L. Ludwig
Crystal Structure Of The Quorum-Sensing Protein Luxs Reveal A Catalytic Metal Site.
Proc. Natl. Acad. Sci. Usa V. 98 11169 2001
PubMed-ID: 11553770  |  Reference-DOI: 10.1073/PNAS.191223098

(-) Compounds

Molecule 1 - AUTOINDUCER-2 PRODUCTION PROTEIN LUXS
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Plasmid: PET29
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Gene: LUXS
    Organism Scientific: BACILLUS SUBTILIS
    Organism Taxid: 1423
    Synonym: AI-2 SYNTHESIS PROTEIN

 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
1GOL1Ligand/IonGLYCEROL
2OCS1Mod. Amino AcidCYSTEINESULFONIC ACID
3ZN1Ligand/IonZINC ION
Biological Unit 1 (2, 4)
No.NameCountTypeFull Name
1GOL2Ligand/IonGLYCEROL
2OCS2Mod. Amino AcidCYSTEINESULFONIC ACID
3ZN-1Ligand/IonZINC ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREHIS A:54 , HIS A:58 , CYS A:126 , HOH A:1002BINDING SITE FOR RESIDUE ZN A 1001
2AC2SOFTWAREVAL A:32 , PHE A:40 , CYS A:41 , GLN A:46 , GLU A:95 , LEU A:140 , PHE A:143 , HOH A:1018 , HOH A:1034 , HOH A:1155BINDING SITE FOR RESIDUE GOL A 301

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1IE0)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Ala A:16 -Pro A:17

 Sequence-Structure Mapping

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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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  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:156
 aligned with LUXS_BACSU | O34667 from UniProtKB/Swiss-Prot  Length:157

    Alignment length:156
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151      
           LUXS_BACSU     2 PSVESFELDHNAVVAPYVRHCGVHKVGTDGVVNKFDIRFCQPNKQAMKPDTIHTLEHLLAFTIRSHAEKYDHFDIIDISPMGCQTGYYLVVSGEPTSAEIVDLLEDTMKEAVEITEIPAANEKQCGQAKLHDLEGAKRLMRFWLSQDKEELLKVFG 157
               SCOP domains d1ie0a_ A: Autoinducer-2 production protein LuxS                                                                                                             SCOP domains
               CATH domains 1ie0A00 A:2-157  [code=3.30.1360.80, no name defined]                                                                                                        CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .hhhhhhh........eeeeeeeeee...eeeeeeeee.........hhhhhhhhhhhhhhhhhhhhh....eeeeeeee.....eeeeeeee..hhhhhhhhhhhhhhhhh...................hhhhhhhhhhhhhh.hhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1ie0 A   2 PSVESFELDHNAVVAPYVRHCGVHKVGTDGVVNKFDIRFCQPNKQAMKPDTIHTLEHLLAFTIRSHAEKYDHFDIIDISPMGcQTGYYLVVSGEPTSAEIVDLLEDTMKEAVEITEIPAANEKQCGQAKLHDLEGAKRLMRFWLSQDKEELLKVFG 157
                                    11        21        31        41        51        61        71        81  |     91       101       111       121       131       141       151      
                                                                                                             84-OCS
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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
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1IE0)

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A   (LUXS_BACSU | O34667)
molecular function
    GO:0043768    S-ribosylhomocysteine lyase activity    Catalysis of the reaction: S-(5-deoxy-D-ribos-5-yl)-L-homocysteine = (S)-4,5-dihydroxypentane-2,3-dione + L-homocysteine.
    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:0005506    iron ion binding    Interacting selectively and non-covalently with iron (Fe) ions.
    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:0009372    quorum sensing    The process in which single-celled organisms monitor their population density by detecting the concentration of small, diffusible signal molecules produced by the cells themselves.

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 Related Entries

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

UniProtKB/Swiss-Prot
        LUXS_BACSU | O34667: 1j98 1jqw 1jvi 1ycl 2fqo 2fqt

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