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(-) Description

Title :  CRYSTAL STRUCTURE OF CYANOBACTERIAL PSBQ FROM SYNECHOCYSTIS SP. PCC 6803 COMPLEXED WITH ZN2+
 
Authors :  S. A. Jackson, R. D. Fagerlund, S. M. Wilbanks, J. J. Eaton-Rye
Date :  12 Feb 10  (Deposition) - 31 Mar 10  (Release) - 07 Apr 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.85
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Photosynthesis, Four Helix Bundle (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. A. Jackson, R. D. Fagerlund, S. M. Wilbanks, J. J. Eaton-Rye
Crystal Structure Of Psbq From Synechocystis Sp. Pcc 6803 At 1. 8 A: Implications For Binding And Function In Cyanobacterial Photosystem Ii
Biochemistry V. 49 2765 2010
PubMed-ID: 20210304  |  Reference-DOI: 10.1021/BI100217H

(-) Compounds

Molecule 1 - SLL1638 PROTEIN
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PGEX-6-P-3
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Fragment: RESIDUES 21-149
    Gene: SLL1638
    Organism Scientific: SYNECHOCYSTIS SP.
    Organism Taxid: 1148
    Strain: PCC 6803
    Synonym: PSBQ

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (1x): A 
Biological Unit 2 (1x):  B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 4)

Asymmetric Unit (1, 4)
No.NameCountTypeFull Name
1ZN4Ligand/IonZINC ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1ZN-1Ligand/IonZINC ION
Biological Unit 2 (0, 0)
No.NameCountTypeFull Name
1ZN-1Ligand/IonZINC ION

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLU A:107 , HIS A:111 , ASP A:137 , GLU B:133BINDING SITE FOR RESIDUE ZN A 1
2AC2SOFTWAREHIS A:76 , ASP A:116 , GLY B:17 , HOH B:239BINDING SITE FOR RESIDUE ZN A 3
3AC3SOFTWAREGLY A:17 , HIS B:76 , ASP B:116 , HOH B:240BINDING SITE FOR RESIDUE ZN B 2
4AC4SOFTWAREGLU A:133 , GLU B:107 , HIS B:111 , ASP B:137BINDING SITE FOR RESIDUE ZN B 4

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3LS1)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3LS1)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3LS1)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3LS1)

(-) Exons   (0, 0)

(no "Exon" information available for 3LS1)

(-) 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    
   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:133
 aligned with P73048_SYNY3 | P73048 from UniProtKB/TrEMBL  Length:149

    Alignment length:133
                                    26        36        46        56        66        76        86        96       106       116       126       136       146   
         P73048_SYNY3    17 TVLVSCSSPQVEIPTTYSPEKIAQLQVYVNPIAVARDGMEKRLQGLIADQNWVDTQTYIHGPLGQLRRDMLGLASSLLPKDQDKAKTLAKEVFGHLERLDAAAKDRNGSQAKIQYQEALADFDSFLNLLPQAS 149
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .................hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhh...hhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ls1 A  17 GPLGSCSSPQVEIPTTYSPEKIAQLQVYVNPIAVARDGMEKRLQGLIADQNWVDTQTYIHGPLGQLRRDMLGLASSLLPKDQDKAKTLAKEVFGHLERLDAAAKDRNGSQAKIQYQEALADFDSFLNLLPQAS 149
                                    26        36        46        56        66        76        86        96       106       116       126       136       146   


Chain B from PDB  Type:PROTEIN  Length:133
 aligned with P73048_SYNY3 | P73048 from UniProtKB/TrEMBL  Length:149

    Alignment length:133
                                    26        36        46        56        66        76        86        96       106       116       126       136       146   
         P73048_SYNY3    17 TVLVSCSSPQVEIPTTYSPEKIAQLQVYVNPIAVARDGMEKRLQGLIADQNWVDTQTYIHGPLGQLRRDMLGLASSLLPKDQDKAKTLAKEVFGHLERLDAAAKDRNGSQAKIQYQEALADFDSFLNLLPQAS 149
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) -------------------------------PsbQ-3ls1B01 B:48-146                                                                              --- Pfam domains (1)
           Pfam domains (2) -------------------------------PsbQ-3ls1B02 B:48-146                                                                              --- Pfam domains (2)
         Sec.struct. author .................hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhh...hhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3ls1 B  17 GPLGSCSSPQVEIPTTYSPEKIAQLQVYVNPIAVARDGMEKRLQGLIADQNWVDTQTYIHGPLGQLRRDMLGLASSLLPKDQDKAKTLAKEVFGHLERLDAAAKDRNGSQAKIQYQEALADFDSFLNLLPQAS 149
                                    26        36        46        56        66        76        86        96       106       116       126       136       146
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  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  (0, 0)

(no "SCOP Domain" information available for 3LS1)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3LS1)

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: no clan defined [family: PsbQ] (4)

(-) Gene Ontology  (7, 7)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (P73048_SYNY3 | P73048)
molecular function
    GO:0005509    calcium ion binding    Interacting selectively and non-covalently with calcium ions (Ca2+).
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
biological process
    GO:0015979    photosynthesis    The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide (CO2) using energy obtained from light rather than from the oxidation of chemical compounds.
cellular component
    GO:0019898    extrinsic component of membrane    The component of a membrane consisting of gene products and protein complexes that are loosely bound to one of its surfaces, but not integrated into the hydrophobic region.
    GO:0009523    photosystem II    A photosystem that contains a pheophytin-quinone reaction center with associated accessory pigments and electron carriers. In cyanobacteria and chloroplasts, in the presence of light, PSII functions as a water-plastoquinone oxidoreductase, transferring electrons from water to plastoquinone, whereas other photosynthetic bacteria carry out anoxygenic photosynthesis and oxidize other compounds to re-reduce the photoreaction center.
    GO:0009654    photosystem II oxygen evolving complex    A complex, composed of a cluster of manganese, calcium and chloride ions bound to extrinsic proteins, that catalyzes the splitting of water to O2 and 4 H+. In cyanobacteria there are five extrinsic proteins in OEC (PsbO, PsbP-like, PsbQ-like, PsbU and PsbV), while in plants there are only three (PsbO, PsbP and PsbQ).
    GO:0030096    plasma membrane-derived thylakoid photosystem II    A protein complex, located in the membrane-derived thylakoid, containing the P680 reaction center. In the light, PSII functions as a water-plastoquinone oxidoreductase, transferring electrons from water to plastoquinone.

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 Related Entries

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

UniProtKB/TrEMBL
        P73048_SYNY3 | P73048: 3ls0

(-) Related Entries Specified in the PDB File

3ls0 THE SAME PROTEIN, APO FORM