1RQK Photosynthesis date Dec 05, 2003
title Structure Of The Reaction Centre From Rhodobacter Sphaeroide Carotenoidless Strain R-26.1 Reconstituted With 3,4- Dihydrospheroidene
authors A.W.Roszak, H.Hashimoto, A.T.Gardiner, R.J.Cogdell, N.W.Isaacs
compound source
Molecule: Reaction Center Protein L Chain
Chain: L
Synonym: Photosynthetic Reaction Center L Subunit
 Organism_scientific: Rhodobacter Sphaeroides
Organism_taxid: 1063
Strain: R-26.1
Other_details: Strain R-26.1 Of Rhodobacter Sphaeroides Bac A Partial Revertant Of The R-26 Chemical Mutant Of The Wild Strain 2.4.1. While R-26 Has No Lh2 Antenna And No Caroteno R-26.1 Has Altered Lh2 Antenna And No Carotenoid. Reaction From R-26.1 Strain Is Therefore Identical With The Wild-Typ 2.4.1 Except For The Missing Carotenoid. In This Entry R-26 Been Reconstituted With Carotenoid 3,4-Dihydrospheroidene, Known As Methoxyneurosporene.;

Molecule: Reaction Center Protein M Chain
Chain: M
Synonym: Photosynthetic Reaction Center M Subunit
Organism_scientific: Rhodobacter Sphaeroides
Organism_taxid: 1063
Strain: R-26.1

Molecule: Reaction Center Protein H Chain
Chain: H
Synonym: Photosynthetic Reaction Center H Subunit
Organism_scientific: Rhodobacter Sphaeroides
Organism_taxid: 1063
Strain: R-26.1
symmetry Space Group: P 31 2 1
R_factor 0.162 R_Free 0.194
crystal
cell
length a length b length c angle alpha angle beta angle gamma
141.718 141.718 187.179 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.70 Å
ligand BCL, BPH, CDL, FE, LDA, SP2, U10 enzyme
related structures by homologous chain: 1PCR, 2BNP
Gene
Ontology
ChainFunctionProcessComponent
H
  • electron transporter, transf...


    • L


    M


    Primary referenceProtein regulation of carotenoid binding; gatekeeper and locking amino acid residues in reaction centers of Rhodobacter sphaeroides., Roszak AW, McKendrick K, Gardiner AT, Mitchell IA, Isaacs NW, Cogdell RJ, Hashimoto H, Frank HA, Structure (Camb) 2004 May;12(5):765-73. PMID:15130469
    Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (161 Kb) [Save to disk]
  • Biological Unit Coordinates (1rqk.pdb1.gz) 150 Kb
  • LPC: Ligand-Protein Contacts for 1RQK
  • CSU: Contacts of Structural Units for 1RQK
  • Likely Quarternary Molecular Structure file(s) for 1RQK
  • Structure Factors (457 Kb)
  • Retrieve 1RQK in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1RQK from S2C, [Save to disk]
  • Re-refined 1rqk structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
    • View 1RQK in 3D
  • Proteopedia, because life has more than 2D.
  • On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure.
  • On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.
    • Visual 3D analysis of 1RQK
  • Ramachandran plot from PDBSum
    • Structure-derived information
  • Electron Density related parameters from EDS Electron Density Server, at Upsala
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1RQK, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1rqkh2, region H:10-35 [Jmol] [rasmolscript] [script source]
        - Domain d1rqkh1, region H:36-250 [Jmol] [rasmolscript] [script source]
        - Domain d1rqkl_, region L [Jmol] [rasmolscript] [script source]
        - Domain d1rqkm_, region M [Jmol] [rasmolscript] [script source]
  • Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH
  • Summaries and structural analyses of PDB data files from PDBSum
  • Identification of Protein Pockets & Cavities at CASTp
    • Sequence-derived information
  • View one-letter amino acid or nucleotide sequence for each chain: [1rqk_L] [1rqk] [1rqk_M] [1rqk_H]
  • SWISS-PROT database: [P0C0Y7] [P0C0Y8] [P0C0Y9]
  • Belongs to the photosynthetic reaction center (prc) family according to TCDB.
  • Domain organization of [RCEH_RHOSH] [RCEL_RHOSH] [RCEM_RHOSH] by SWISSPFAM
    • Other resources with information on 1RQK
  • Community annotation for 1RQK at PDBWiki (http://pdbwiki.org)
  • MMDB (Entrez's Structure Database)
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