From: Sequence analysis and structure prediction of type II Pseudomonas sp. USM 4–55 PHA synthase and an insight into its catalytic mechanism
Catalytic Residues
PhaC1P.sp USM 4–55
1HLG
Nucleophile – Histidine
Cys296 – His479 = 7.95 Å
Ser153 – His353 = 7.41 Å
Histidine – Acid
His479 – Asp451 = 4.74 Å
His353 – Asp324 = 4.67 Å