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(-) Description

Title :  ANAEROBIC COBALT CHELATASE (CBIX) FROM ARCHAEOGLOBUS FULGIDUS
 
Authors :  C. V. Romao, D. Ladakis, S. A. L. Lobo, M. A. Carrondo, A. A. Brindley, E. D P. M. Matias, R. W. Pickersgill, L. M. Saraiva, M. J. Warren
Date :  04 Nov 10  (Deposition) - 22 Dec 10  (Release) - 26 Jan 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Lyase, Beta-Alpha-Beta, Cobalamin Biosynthesis, Metal-Binding, Parallel Beta Sheet (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  C. V. Romao, D. Ladakis, S. A. Lobo, M. A. Carrondo, A. A. Brindley, E. Deery, P. M. Matias, R. W. Pickersgill, L. M. Saraiva, M. J. Warren
Evolution In A Family Of Chelatases Facilitated By The Introduction Of Active Site Asymmetry And Protein Oligomerization.
Proc. Natl. Acad. Sci. Usa V. 108 97 2011
PubMed-ID: 21173279  |  Reference-DOI: 10.1073/PNAS.1014298108

(-) Compounds

Molecule 1 - SIROHYDROCHLORIN COBALTOCHELATASE
    Chains: A
    EC Number: 4.99.1.3
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET3A
    Expression System Strain: BL21 STAR DE3
    Expression System Taxid: 469008
    Expression System Variant: PLYSS
    Expression System Vector Type: PLASMID
    Organism Scientific: ARCHAEOGLOBUS FULGIDUS
    Organism Taxid: 2234

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

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(-) Sites  (0, 0)

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(-) SS Bonds  (0, 0)

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(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Arg A:47 -Pro A:48

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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(-) Exons   (0, 0)

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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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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:126
 aligned with CBIX_ARCFU | O29537 from UniProtKB/Swiss-Prot  Length:132

    Alignment length:126
                             1                                                                                                                            
                             |       9        19        29        39        49        59        69        79        89        99       109       119      
           CBIX_ARCFU     - -MRRGLVIVGHGSQLNHYREVMELHRKRIEESGAFDEVKIAFAARKRRPMPDEAIREMNCDIIYVVPLFISYGLHVTEDLPDLLGFPRGRGIKEGEFEGKKVVICEPIGEDYFVTYAILNSVFRIG 125
               SCOP domains d2xwsa_ A: automated matches                                                                                                   SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ----------CbiX-2xwsA01 A:10-119                                                                                         ------ Pfam domains
         Sec.struct. author ...eeeeeee....hhhhhhhhhhhhhhhhhhh...eeeeee.......hhhhhhhhh...eeeeee.....hhhhhhhhhhhhh.......eeeee..eeeee......hhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2xws A   0 GMRRGLVIVGHGSQLNHYREVMELHRKRIEESGAFDEVKIAFAARKRRPMPDEAIREMNCDIIYVVPLFISYGLHVTEDLPDLLGFPRGRGIKEGEFEGKKVVICEPIGEDYFVTYAILNSVFRIG 125
                                     9        19        29        39        49        59        69        79        89        99       109       119
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  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, 1)

Asymmetric Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2XWS)

(-) Pfam Domains  (1, 1)

Asymmetric Unit
(-)
Clan: Chelatase (20)

(-) Gene Ontology  (7, 7)

Asymmetric Unit(hide GO term definitions)
Chain A   (CBIX_ARCFU | O29537)
molecular function
    GO:0050897    cobalt ion binding    Interacting selectively and non-covalently with a cobalt (Co) ion.
    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:0016852    sirohydrochlorin cobaltochelatase activity    Catalysis of the reaction: sirohydrochlorin + Co2+ = cobalt-sirohydrochlorin + 2 H+.
    GO:0046906    tetrapyrrole binding    Interacting selectively and non-covalently with a tetrapyrrole, a compound containing four pyrrole nuclei variously substituted and linked to each other through carbons at the alpha position.
biological process
    GO:0019251    anaerobic cobalamin biosynthetic process    The chemical reactions and pathways resulting in the formation of cobalamin (vitamin B12) in the absence of oxygen.
    GO:0009236    cobalamin biosynthetic process    The chemical reactions and pathways resulting in the formation of cobalamin (vitamin B12), a water-soluble vitamin characterized by possession of a corrin nucleus containing a cobalt atom.

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  2xws
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 Related Entries

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

UniProtKB/Swiss-Prot
        CBIX_ARCFU | O29537: 1tjn 2dj5 2xwq

(-) Related Entries Specified in the PDB File

1tjn CRYSTAL STRUCTURE OF HYPOTHETICAL PROTEIN AF0721 FROMARCHAEOGLOBUS FULGIDUS
2dj5 CRYSTAL STRUCTURE OF THE VITAMIN B12 BIOSYNTHETICCOBALTOCHELATASE, CBIXS, FROM ARCHAEOGLOBUS FULGIDUS
2xwp ANAEROBIC COBALT CHELATASE (CBIK) FROM SALMONELLA TYPHIMURIUM IN COMPLEX WITH METALATED TETRAPYRROLE
2xwq ANAEROBIC COBALT CHELATASE FROM ARCHEAOGLOBUS FULGIDUS (CBIX) IN COMPLEX WITH METALATED SIROHYDROCHLORIN PRODUCT