Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 86265.63 
• Atom Count: 5873 
• Residue Count: 780 
• Unique protein chains: 1

1ELQ

CRYSTAL STRUCTURE OF THE CYSTINE C-S LYASE C-DES

• DOI: 10.2210/pdb1ELQ/pdb

• Classification: LYASE
• Organism(s): Synechocystis sp. (strain PCC 6714)
• Expression System: Bacteria


• Deposited: 2000-03-14 Released: 2000-04-19 
• Deposition Author(s): Clausen, T., Kaiser, J.T., Steegborn, C., Huber, R., Kessler, D.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.8 Å
• R-Value Free: 0.249 
• R-Value Work: 0.198 

Literature

Crystal structure of the cystine C-S lyase from Synechocystis: stabilization of cysteine persulfide for FeS cluster biosynthesis.

Clausen, T., Kaiser, J.T., Steegborn, C., Huber, R., Kessler, D.

(2000) Proc.Natl.Acad.Sci.USA 97: 3856-3861

• PubMed: 10760256 
• Primary Citation of Related Structures:  
  1ELU


• PubMed Abstract: 
  

FeS clusters are versatile cofactors of a variety of proteins, but the mechanisms of their biosynthesis are still unknown. The cystine C-S lyase from Synechocystis has been identified as a participant in ferredoxin FeS cluster formation. Herein, we report on the crystal structure of the lyase and of a complex with the reaction products of cystine cleavage at 1.8- and 1.55-A resolution, respectively. The sulfur-containing product was unequivocally identified as cysteine persulfide. The reactive persulfide group is fixed by a hydrogen bond to His-114 in the center of a hydrophobic pocket and is thereby shielded from the solvent. Binding and stabilization of the cysteine persulfide represent an alternative to the generation of a protein-bound persulfide by NifS-like proteins and point to the general importance of persulfidic compounds for FeS cluster assembly.

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Organizational Affiliation: 

Max-Planck-Institut für Biochemie, Abteilung Strukturforschung, Am Klopferspitz 18a, D-82152 Martinsried, Germany. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
L-CYSTEINE/L-CYSTINE C-S LYASE	A, B	390	Synechocystis sp. (strain PCC 6714)	Mutation(s): 8  Gene Names: c-des
Find proteins for Q9ZHG9 (Synechocystis sp. (strain PCC 6714)) Go to UniProtKB:  Q9ZHG9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
K	A, B	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N
PLP	A, B	PYRIDOXAL-5'-PHOSPHATE VITAMIN B6 Phosphate C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.8 Å
• R-Value Free: 0.249 
• R-Value Work: 0.198 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length (Å)	Angle (°)
a = 62.400	α = 90.00
b = 65.400	β = 90.00
c = 170.100	γ = 90.00

Software Package:

Software Name	Purpose
SHARP	phasing
CCP4	data scaling
DENZO	data reduction
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2000-03-14 
• Released Date: 2000-04-19 
• Deposition Author(s): Clausen, T., Kaiser, J.T., Steegborn, C., Huber, R., Kessler, D.

Revision History 

• Version 1.0: 2000-04-19
  Type: Initial release
• Version 1.1: 2008-04-27
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Source and taxonomy, Version format compliance