1JS2

Crystal structure of C77S HiPIP: a serine ligated [4Fe-4S] cluster

• PDB DOI: https://doi.org/10.2210/pdb1JS2/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Allochromatium vinosum
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2001-08-16 Released: 2002-01-25 
• Deposition Author(s): Mansy, S.S., Xiong, Y., Hemann, C., Hille, R., Sundaralingam, M., Cowan, J.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.234 
• R-Value Work: 0.193 

Literature

Crystal structure and stability studies of C77S HiPIP: a serine ligated [4Fe-4S] cluster.

Mansy, S.S., Xiong, Y., Hemann, C., Hille, R., Sundaralingam, M., Cowan, J.A.

(2002) Biochemistry 41: 1195-1201

• PubMed: 11802718 
• DOI: https://doi.org/10.1021/bi011811y
• Primary Citation of Related Structures:  
  1JS2


• PubMed Abstract: 
  

  The crystal structure of Chromatium vinosum C77S HiPIP has been determined and is compared with that of wild type. This is the first reported crystal structure of a Ser ligated [4Fe-4S] cluster and reveals a 0.11 A shortening of the Fe-O bond (relative to Fe-S), but only minor structural alterations of the overall tertiary structure. Coordination changes are corroborated by resonance Raman spectroscopy. Comparison of the crystal and solution structures for HiPIPs identifies Phe48 as the main controller of solvent access to the Fe-S cluster; however, there is no significant change in cluster solvation of the C77S mutant relative to WT HiPIP. Ser ligation ultimately results in decreased cluster stability due to increased sensitivity to proton mediated degradation.

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Organizational Affiliation: 

Evans Laboratory of Chemistry, Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 4-mer - A4 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 39.15 kDa 
• Atom Count: 2,860 
• Modelled Residue Count: 356 
• Deposited Residue Count: 356 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
high-potential iron protein	A, B, C, D	89	Allochromatium vinosum	Mutation(s): 1
UniProt
Find proteins for P00260 (Allochromatium vinosum (strain ATCC 17899 / DSM 180 / NBRC 103801 / NCIMB 10441 / D)) Explore P00260  Go to UniProtKB:  P00260

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SF4	E [auth A], F [auth B], G [auth C], H [auth D]	IRON/SULFUR CLUSTER Fe4 S4 LJBDFODJNLIPKO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.234 
• R-Value Work: 0.193 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 67.059	α = 90
b = 30.182	β = 111.27
c = 68.738	γ = 90

Software Package:

Software Name	Purpose
AMoRE	phasing
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2002-01-25 
Deposition Author(s): Mansy, S.S., Xiong, Y., Hemann, C., Hille, R., Sundaralingam, M., Cowan, J.A.

Revision History  

• Version 1.0: 2002-01-25
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2013-04-17
  Changes: Structure summary
• Version 1.4: 2021-10-27
  Changes: Database references, Derived calculations
• Version 1.5: 2024-02-07
  Changes: Data collection