Biological Assembly 1  

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Global Symmetry: Dihedral - D2  (3D View)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 170827.45 
• Atom Count: 11936 
• Residue Count: 1572 
• Unique protein chains: 1

1N8P

Crystal Structure of cystathionine gamma-lyase from yeast

• DOI: 10.2210/pdb1N8P/pdb

• Classification: LYASE
• Organism(s): Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2002-11-21 Released: 2002-12-04 
• Deposition Author(s): Messerschmidt, A., Worbs, M., Steegborn, C., Wahl, M.C., Huber, R., Clausen, T.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.346 
• R-Value Work: 0.253 

Literature

Determinants of Enzymatic Specificity in the Cys-Met-Metabolism PLP-Dependent Enzymes Family: Crystal Structure of Cystathionine gamma-lyase from Yeast and Intrafamiliar Structural Comparison

Messerschmidt, A., Worbs, M., Steegborn, C., Wahl, M.C., Huber, R., Laber, B., Clausen, T.

(2003) BIOL.CHEM. 384: 373-386

• PubMed: 12715888 
• DOI: 10.1515/BC.2003.043


• PubMed Abstract: 
  

The crystal structure of cystathionine gamma-lyase (CGL) from yeast has been solved by molecular replacement at a resolution of 2.6 A. The molecule consists of 393 amino acid residues and one PLP moiety and is arranged in the crystal as a tetramer with D2 symmetry as in other related enzymes of the Cys-Met-metabolism PLP-dependent family like cystathionine beta-lyase (CBL). A structure comparison with other family members revealed surprising insights into the tuning of enzymatic specificity between the different family members. CGLs from yeast or human are virtually identical at their active sites to cystathionine gamma-synthase (CGS) from E. coli. Both CGLs and bacterial CGSs exhibit gamma-synthase and gamma-lyase activities depending on their position in the metabolic pathway and the available substrates. This group of enzymes has a glutamate (E333 in yeast CGL) which binds to the distal group of cystathionine (CTT) or the amino group of cysteine. Plant CGSs use homoserine phosphate instead of O-succinyl-homoserine as one substrate. This is reflected by a partially different active site structure in plant CGSs. In CGL and CBL the pseudosymmetric substrate must dock at the active site in different orientations, with S in gamma-position (CBL) or in delta-position (CGL). The conserved glutamate steers the substrate as seen in other CGLs. In CBLs this position is occupied by either tyrosine or hydrophobic residues directing binding of CTT such that S is in the in gamma-position. In methionine gamma-lyase a hydrophic patch operates as recognition site for the methyl group of the methionine substrate.

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Organizational Affiliation: 

Max-Planck-Institut for Biochemie, Abteilung Strukturforschung, Am Klopferspitz 18a, D-82152 Planegg-Martinsried, Germany.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Cystathionine gamma-lyase	A, B, C, D	393	Saccharomyces cerevisiae (strain ATCC 204508 / S288c)	Mutation(s): 0  Gene Names: CYS3 (CYI1, STR1) EC: 4.4.1.1
Find proteins for P31373 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Go to UniProtKB:  P31373

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
PLP	A, B, C, D	PYRIDOXAL-5'-PHOSPHATE VITAMIN B6 Phosphate C8 H10 N O6 P NGVDGCNFYWLIFO-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.6 Å
• R-Value Free: 0.346 
• R-Value Work: 0.253 
• Space Group: C 1 2 1

Unit Cell:

Length (Å)	Angle (°)
a = 153.819	α = 90.00
b = 62.164	β = 105.42
c = 160.837	γ = 90.00

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-11-21 
• Released Date: 2002-12-04 
• Deposition Author(s): Messerschmidt, A., Worbs, M., Steegborn, C., Wahl, M.C., Huber, R., Clausen, T.

Revision History 

• Version 1.0: 2002-12-04
  Type: Initial release
• Version 1.1: 2008-04-28
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Non-polymer description, Version format compliance