1HH7

REFINED CRYSTAL STRUCTURE OF CYTOCHROME C2 FROM RHODOPSEUDOMONAS PALUSTRIS AT 1.4 ANGSTROM RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb1HH7/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Rhodopseudomonas palustris
• Mutation(s): No 


• Deposited: 2000-12-21 Released: 2001-01-02 
• Deposition Author(s): Garau, G., Geremia, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Observed: 0.151 

Literature

Crystallization and Preliminary X-Ray Analysis of Two Ph-Dependent Forms of Cytochrome C2 from Rhodopseudomonas Palustris

Garau, G., Geremia, S., Randaccio, L., Vaccari, L., Viezzoli, M.S.

(2000) Acta Crystallogr D Biol Crystallogr 56: 1699

• PubMed: 11092951 
• DOI: https://doi.org/10.1107/s0907444900013573
• Primary Citation of Related Structures:  
  1HH7


• PubMed Abstract: 
  

  Cytochrome c(2) from Rhodopseudomonas palustris has been crystallized in two different crystal forms: a monoclinic form I at pH 4.4 from both reduced and oxidized protein solution and a trigonal form II at pH 9.0 from reduced protein solution. Complete 1. 7 and 1.4 A resolution data sets were collected from the oxidized form I and from the form II, respectively. The preliminary structures show an important change in the iron coordination environment in the trigonal form obtained at basic pH arising from the substitution of the Met ligand by an ammonia molecule.

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Organizational Affiliation: 

Department of Chemical Sciences, University of Trieste, Via L. Giorgieri 1, I-34127 Trieste, Italy.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 13.01 kDa 
• Atom Count: 1,159 
• Modelled Residue Count: 114 
• Deposited Residue Count: 114 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYTOCHROME C2	A	114	Rhodopseudomonas palustris	Mutation(s): 0
UniProt
Find proteins for P00091 (Rhodopseudomonas palustris (strain ATCC BAA-98 / CGA009)) Explore P00091  Go to UniProtKB:  P00091

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEC	B [auth A]	HEME C C34 H34 Fe N4 O4 HXQIYSLZKNYNMH-LJNAALQVSA-N
SO4	C [auth A], D [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
NH3	E [auth A]	AMMONIA H3 N QGZKDVFQNNGYKY-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	A	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.40 Å
• R-Value Observed: 0.151 
• Space Group: P 3₂ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 64.67	α = 90
b = 64.67	β = 90
c = 68.25	γ = 120

Software Package:

Software Name	Purpose
SHELXL-97	refinement
MOSFLM	data reduction
SCALA	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2001-01-02 
Deposition Author(s): Garau, G., Geremia, S.

Revision History  

• Version 1.0: 2001-01-02
  Type: Initial release
  
• Version 1.1: 2011-05-08
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2019-05-22
  Changes: Data collection, Derived calculations, Other, Refinement description
• Version 2.0: 2020-03-11
  Changes: Advisory, Polymer sequence
• Version 2.1: 2023-12-13
  Changes: Data collection, Database references, Derived calculations, Refinement description