2EBB - JenaLib

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
	Chains	:	A
	EC Number	:	4.2.1.96
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PET-HIS TEV
	Expression System Strain	:	BL21 (DE3) CODONPLUS-RIL-X
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	GK1984
	Organism Scientific	:	GEOBACILLUS KAUSTOPHILUS
	Organism Taxid	:	1462
	Synonym	:	PTERIN CARBINOLAMINE DEHYDRATASE

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (0, 0)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

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

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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

SCOP Domains (1, 1)

CATH Domains (0, 0)

Pfam Domains (0, 0)

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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