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(-) Description

Title :  CRYSTAL STRUCTURE OF PTERIN-4-ALPHA-CARBINOLAMINE DEHYDRATASE (PTERIN CARBINOLAMINE DEHYDRATASE) FROM GEOBACILLUS KAUSTOPHILUS HTA426
 
Authors :  T. S. Kumarevel, P. Karthe, S. Kuramitsu, S. Yokoyama, Riken Structural Genomics/Proteomics Initiative (Rsgi)
Date :  07 Feb 07  (Deposition) - 12 Feb 08  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Pterin-4-Alpha-Carbinolamine Dehydratase, Coenzyme Biosyntheses, Gk1984, Structural Genomics, Nppsfa, National Project On Protein Structural And Functional Analyses, Riken Structural Genomics/Proteomics Initiative, Rsgi, Lyase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  T. S. Kumarevel, P. Karthe, S. Kuramitsu, S. Yokoyama
Crystal Structure Of Pterin-4-Alpha-Carbinolamine Dehydratase (Pterin Carbinolamine Dehydratase) From Geobacillus Kaustophilus Hta426
To Be Published
PubMed: search
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PTERIN-4-ALPHA-CARBINOLAMINE DEHYDRATASE
    ChainsA
    EC Number4.2.1.96
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET-HIS TEV
    Expression System StrainBL21 (DE3) CODONPLUS-RIL-X
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneGK1984
    Organism ScientificGEOBACILLUS KAUSTOPHILUS
    Organism Taxid1462
    SynonymPTERIN CARBINOLAMINE DEHYDRATASE

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

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(-) Sequences/Alignments

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Chain A from PDB  Type:PROTEIN  Length:96
 aligned with Q5KYG7_GEOKA | Q5KYG7 from UniProtKB/TrEMBL  Length:101

    Alignment length:96
                                    10        20        30        40        50        60        70        80        90      
          Q5KYG7_GEOKA    1 MRLTEEEVQALLEKADGWKLADERWIVKKYRFQDYLQGIEFVRRIAAISENANHHPFISIDYKLITVKLSSWRAKGLTKLDFDLAKQYDEVYNQMK 96
               SCOP domains d2ebba_ A: automated matches                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ...hhhhhhhhhhh....eee...eeeeeee..hhhhhhhhhhhhhhhhhhh....eeeee..eeeeee........hhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------ Transcript
                  2ebb A  3 MRLTEEEVQALLEKADGWKLADERWIVKKYRFQDYLQGIEFVRRIAAISENANHHPFISIDYKLITVKLSSWRAKGLTKLDFDLAKQYDEVYNQMK 98
                                    12        22        32        42        52        62        72        82        92      

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 Classification and Annotation

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Asymmetric Unit

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(-) Gene Ontology  (3, 3)

Asymmetric Unit(hide GO term definitions)
Chain A   (Q5KYG7_GEOKA | Q5KYG7)
molecular function
    GO:0008124    4-alpha-hydroxytetrahydrobiopterin dehydratase activity    Catalysis of the reaction: (6R)-6-(L-erythro-1,2-dihydroxypropyl)-5,6,7,8-tetrahydro-4a-hydroxypterin = (6R)-6-(L-erythro-1,2-dihydroxypropyl)-7,8-dihydro-6H-pterin + H(2)O.
    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.
biological process
    GO:0006729    tetrahydrobiopterin biosynthetic process    The chemical reactions and pathways resulting in the formation of tetrahydrobiopterin, the reduced form of biopterin (2-amino-4-hydroxy-6-(1,2-dihydroxypropyl)-pteridine). It functions as a hydroxylation coenzyme, e.g. in the conversion of phenylalanine to tyrosine.

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