7D7O

Crystal structure of cystathionine gamma-lyase from Bacillus cereus ATCC 14579

Summary for 7D7O

• Entry DOI: 10.2210/pdb7d7o/pdb
• Descriptor: Bifunctional cystathionine gamma-lyase/homocysteine desulfhydrase, PYRIDOXAL-5'-PHOSPHATE, GLYCEROL, ... (5 entities in total)
• Functional Keywords: cysteine, plp-dependent enzyme, biosynthetic protein
• Biological source: Bacillus cereus (strain ATCC 14579 / DSM 31 / JCM 2152 / NBRC 15305 / NCIMB 9373 / NRRL B-3711)
• Total number of polymer chains: 2
• Total formula weight: 83980.36

Authors

Sagong, H.-Y.,Kim, B.,Kim, K.-J. (deposition date: 2020-10-05, release date: 2021-08-18, Last modification date: 2023-11-29)

Primary citation

Sagong, H.Y.,Kim, B.,Joo, S.,Kim, K.J.
Structural and Functional Characterization of Cystathionine gamma-lyase from Bacillus cereus ATCC 14579.
J.Agric.Food Chem., 68:15267-15274, 2020

PubMed Abstract: Cysteine is a semiessential amino acid and plays an important role in metabolism and protein structure and has also been applied in various industrial fields, such as pharmaceutical, food, cosmetic, and animal feed industries. Metabolic engineering studies have been conducted for the cysteine production through bacterial fermentation, but studies on the cysteine biosynthetic pathway in microorganisms are limited. We report the biochemical characteristics of cystathionine γ-lyase from ATCC 14579 (CGL). We also determined the crystal structure of CGL in complex with the PLP cofactor and identified the substrate binding mode. We observed that the replacement of the conserved Glu321 residue to alanine showed increased activity by providing wider active site entrance and hydrophobic interaction for the substrate. We suggest that the structural differences of the α13-α14 region in CGL enzymes might determine the active site conformation.

PubMed: 33301683
DOI: 10.1021/acs.jafc.0c06503

Experimental method

X-RAY DIFFRACTION (1.98 Å)