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3-0.5-μm diameter. The 1H NMR spectrum represented the typical characters of medium-chain length-PHAs. This variation of all parameters was successfully demonstrated a good intracellular PHAs accumulation in P. putida TISTR 1522 by fatty acid salt utilization.Cephalosporin C acylase (CCA) is capable of catalyzing cephalosporin C (CPC) to produce 7-aminocephalosporanic acid (7-ACA), an intermediate of semi-synthetic cephalosporins. Inducible expression is usually used for CCA. To improve the efficiency of CCA expression without gene in