2A18

carboxysome shell protein ccmK4, crystal form 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.203 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Protein structures forming the shell of primitive bacterial organelles

Kerfeld, C.A.Sawaya, M.R.Tanaka, S.Nguyen, C.V.Phillips, M.Beeby, M.Yeates, T.O.

(2005) Science 309: 936-938

  • DOI: 10.1126/science.1113397
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Bacterial microcompartments are primitive organelles composed entirely of protein subunits. Genomic sequence databases reveal the widespread occurrence of microcompartments across diverse microbes. The prototypical bacterial microcompartment is the c ...

    Bacterial microcompartments are primitive organelles composed entirely of protein subunits. Genomic sequence databases reveal the widespread occurrence of microcompartments across diverse microbes. The prototypical bacterial microcompartment is the carboxysome, a protein shell for sequestering carbon fixation reactions. We report three-dimensional crystal structures of multiple carboxysome shell proteins, revealing a hexameric unit as the basic microcompartment building block and showing how these hexamers assemble to form flat facets of the polyhedral shell. The structures suggest how molecular transport across the shell may be controlled and how structural variations might govern the assembly and architecture of these subcellular compartments.


    Organizational Affiliation

    Molecular Biology Institute, University of California, Los Angeles (UCLA), Box 951570, Los Angeles, CA 90095, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carbon dioxide concentrating mechanism protein ccmK homolog 4
A, B, C
125Synechocystis sp. (strain PCC 6803 / Kazusa)Mutation(s): 0 
Gene Names: ccmK4
Find proteins for P73407 (Synechocystis sp. (strain PCC 6803 / Kazusa))
Go to UniProtKB:  P73407
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NH4
Query on NH4

Download SDF File 
Download CCD File 
A, B, C
AMMONIUM ION
H4 N
QGZKDVFQNNGYKY-UHFFFAOYSA-O
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.28 Å
  • R-Value Free: 0.222 
  • R-Value Work: 0.203 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 70.549α = 90.00
b = 125.040β = 90.00
c = 32.521γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
Blu-Icedata collection
REFMACrefinement
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-09
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Derived calculations, Source and taxonomy, Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description