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(-) Description

Title :  ARSENATE REDUCTASE R60K MUTANT +0.4M ARSENATE FROM E. COLI
 
Authors :  S. Demel, B. F. Edwards
Date :  04 Mar 04  (Deposition) - 15 Feb 05  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.55
Chains :  Asym./Biol. Unit :  A
Keywords :  Arsc, Reductase, Arsenite, Arsenate, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Demel, J. Shi, P. Martin, B. P. Rosen, B. F. Edwards
Arginine 60 In The Arsc Arsenate Reductase Of E. Coli Plasmid R773 Determines The Chemical Nature Of The Bound As(Iii) Product.
Protein Sci. V. 13 2330 2004
PubMed-ID: 15295115  |  Reference-DOI: 10.1110/PS.04787204

(-) Compounds

Molecule 1 - ARSENATE REDUCTASE
    Chains: A
    EC Number: 1.20.4.1
    Mutation: YES
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Plasmid: R773
    Synonym: ARSENICAL PUMP MODIFIER

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (3, 7)

Asymmetric/Biological Unit (3, 7)
No.NameCountTypeFull Name
1CS3Ligand/IonCESIUM ION
2CSR1Mod. Amino AcidS-ARSONOCYSTEINE
3SO43Ligand/IonSULFATE ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWARECSR A:12 , GLY A:13 , THR A:14 , ASN A:62 , GLU A:67 , HOH A:1033 , HOH A:1076 , HOH A:1099 , HOH A:1303BINDING SITE FOR RESIDUE SO4 A 201
2AC2SOFTWAREASN A:93 , ARG A:107 , HOH A:1102 , HOH A:1116 , HOH A:1180 , HOH A:1235BINDING SITE FOR RESIDUE SO4 A 202
3AC3SOFTWARETHR A:14 , ASN A:17 , PRO A:108 , SER A:109 , LYS A:126 , HOH A:1033 , HOH A:1052 , HOH A:1123 , HOH A:1167 , HOH A:1170 , HOH A:1176BINDING SITE FOR RESIDUE SO4 A 203
4AC4SOFTWARELEU A:113 , ASP A:114 , LEU A:116BINDING SITE FOR RESIDUE CS A 401
5AC5SOFTWAREASP A:128BINDING SITE FOR RESIDUE CS A 402
6AC6SOFTWAREPRO A:38 , SER A:40 , GLU A:43BINDING SITE FOR RESIDUE CS A 403

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1SK1)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Arg A:94 -Pro A:95
2Arg A:107 -Pro A:108

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1SK1)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1ARSCPS51353 ArsC family profile.ARSC1_ECOLX3-133  1A:3-133

(-) Exons   (0, 0)

(no "Exon" information available for 1SK1)

(-) Sequences/Alignments

Asymmetric/Biological 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:138
 aligned with ARSC1_ECOLX | P08692 from UniProtKB/Swiss-Prot  Length:141

    Alignment length:138
                                    12        22        32        42        52        62        72        82        92       102       112       122       132        
          ARSC1_ECOLX     3 NITIYHNPACGTSRNTLEMIRNSGTEPTIILYLENPPSRDELVKLIADMGISVRALLRKNVEPYEQLGLAEDKFTDDQLIDFMLQHPILINRPIVVTPLGTRLCRPSEVVLDILQDAQKGAFTKEDGEKVVDEAGKRL 140
               SCOP domains d1sk1a_ A: automated matches                                                                                                               SCOP domains
               CATH domains 1sk1A00 A:3-140 Glutaredoxin                                                                                                               CATH domains
               Pfam domains ----ArsC-1sk1A01 A:7-115                                                                                         ------------------------- Pfam domains
         Sec.struct. author ..eee....hhhhhhhhhhhhhh....eee.......hhhhhhhhhhhhh.hhhhhh...hhhhhhh.......hhhhhhhhhhhhhhhh...eeee..eeee..hhhhhhhh........ee.....eee....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ARSC  PDB: A:3-133 UniProt: 3-133                                                                                                  ------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1sk1 A   3 NITIYHNPAcGTSRNTLEMIRNSGTEPTIILYLENPPSRDELVKLIADMGISVRALLKKNVEPYEQLGLAEDKFTDDQLIDFMLQHPILINRPIVVTPLGTRLCRPSEVVLDILQDAQKGAFTKEDGEKVVDEAGKRL 140
                                    12        22        32        42        52        62        72        82        92       102       112       122       132        
                                    12-CSR
   Legend:   → Mismatch (orange background)
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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/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: Thioredoxin (367)

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ARSC1_ECOLX | P08692)
molecular function
    GO:0008794    arsenate reductase (glutaredoxin) activity    Catalysis of the reaction: arsenate + reduced glutaredoxin = arsenite + oxidized glutaredoxin. Glutaredoxin functions as the electron donor for arsenate reduction. The electron flow therefore is ( NADPH -> glutathione reductase (EC:1.6.4.2) -> ) glutathione -> glutaredoxin -> arsenate reductase, i.e. glutathione is reduced by glutathione reductase and glutaredoxin is reduced by glutathione.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
biological process
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0046685    response to arsenic-containing substance    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 an arsenic stimulus from compounds containing arsenic, including arsenates, arsenites, and arsenides.

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 Related Entries

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

UniProtKB/Swiss-Prot
        ARSC1_ECOLX | P08692: 1i9d 1j9b 1jzw 1s3c 1s3d 1sd8 1sd9 1sjz 1sk0 1sk2

(-) Related Entries Specified in the PDB File

1s3c 1s3d 1sd8 1sd9 1sjz 1sk0 1sk2