Sequence analysis and structure prediction of type II Pseudomonas sp. USM 4–55 PHA synthase and an insight into its catalytic mechanism

Table 2 Comparison of the Cα distances for the catalytic residues between the template structure 1HGL and the predicted structure of PhaC1_{P.sp USM 4–55}

Catalytic Residues	PhaC1_{P.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