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The relative importance of intracellular proteolysis and transport on the yield of the periplasmic enzyme penicillin amidase in Escherichia coli*.

Enzyme and microbial technology

Ignatova Z, Enfors S, Hobbie M, Taruttis S, Vogt C, Kasche V.
PMID: 10689073
Enzyme Microb Technol. 2000 Feb 01;26(2):165-170. doi: 10.1016/s0141-0229(99)00130-1.

Intracellular proteolysis is an important mechanism for regulating the level of the periplasmic enzyme penicillin amidase in Escherichia coli. Evidence is presented that the active enzyme is localized in the periplasmic space and maturation of pro-enzyme occurs during transport...

Improved penicillin amidase production using a genetically engineered mutant of Escherichia coli ATCC 11105.

Biotechnology and bioengineering

Robas N, Zouheiry H, Branlant G, Branlant C.
PMID: 18601241
Biotechnol Bioeng. 1993 Jan 05;41(1):14-24. doi: 10.1002/bit.260410104.

Penicillin G amidase (PGA) is a key enzyme for the industrial production of penicillin G derivatives used in therapeutics. Escherichia coli ATCC 11105 is the more commonly used strain for PGA production. To improve enzyme yield, we constructed various...

Enzyme catalyzed biotransformations in aqueous two-phase systems with precipitated substrate and/or product.

Biotechnology and bioengineering

Kasche V, Galunsky B.
PMID: 18623146
Biotechnol Bioeng. 1995 Feb 05;45(3):261-7. doi: 10.1002/bit.260450311.

Biotransformations catalyzed by free and immobilized enzymes have been carried out in aqueous suspensions with up to 25% (w/w) precipitated substrate or product. For the kinetically controlled synthesis of N-Acetyl-Tyr-Arg-NH(2) with up to 0.8 M insoluble activated substrate N-Acetyl-TyrOEt...

The production of 6-aminopenicillanic acid by a multistage tubular reactor packed with immobilized penicillin amidase.

Biotechnology and bioengineering

Park JM, Choi CY, Seong BL, Han MH.
PMID: 18546461
Biotechnol Bioeng. 1982 Jul;24(7):1623-37. doi: 10.1002/bit.260240714.

A theoretical model equation was derived to find the correlation between the conversion and the amount of immobilized penicillin amidase in column. The theoretical values of the conversion were predicted form this correlation and compared with experimental results. It...

Effect of mass transfer in a recirculation batch reactor system for immobilized penicillin amidase.

Biotechnology and bioengineering

Park JM, Choi CY, Seong BL, Han MH.
PMID: 18546128
Biotechnol Bioeng. 1982 Oct;24(10):2215-26. doi: 10.1002/bit.260241008.

The effect of external mass transfer resistance on the overall reaction rate of the immobilized whole cell penicillin amidase of E. coli in a recirculation batch reactor was investigated. The internal diffusional resistance was found negligible as indicated by...

Showing 1 to 5 of 5 entries