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Dive into the research topics where Guna Romancik is active.

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Featured researches published by Guna Romancik.


Biotechnology Letters | 1986

Enzymatic hydrolysis of penicillin V to 6-aminopenicillanic acid byFusariumoxysporum

David Anthony Lowe; Guna Romancik; Richard Paul Elander

SummaryA strain ofFusariumoxysporum was identified as having an intracellular penicillin V acylase activity (penicillin V amidohydrolase EC 3.5.1.11). Activity was induced by phenoxyacetic acid and had a good tolerance for high substrate and product concentrations. Washed cells could be used repeatedly for the complete hydrolysis of 5% penicillin V solutions. The enzyme was partially purified and concentrated from disrupted cells by fractional precipitation with water miscible solvents.


Applied and Environmental Microbiology | 1997

Purification and characterization of a cephalosporin esterase from Rhodosporidium toruloides.

Michael Politino; Sean M. Tonzi; William V. Burnett; Guna Romancik; John J. Usher


Archive | 1997

SYNTHESIS OF beta-LACTAM ANTIBACTERIALS USING SOLUBLE SIDE CHAIN ESTERS AND ENZYME ACYLASE

John J. Usher; Guna Romancik


Archive | 1995

Enzymatic acylation of 3-hydroxymethyl cephalosporins

John J. Usher; Guna Romancik; Michael Politino; David Anthony Lowe


Archive | 2002

D-hydantoinase from Ochrobactrum anthropi

Michael Politino; Sean M. Tonzi; Guna Romancik; John J. Usher; David Anthony Lowe


Archive | 1997

Cephalosporin esterase gene from Rhodosporidium toruloides

Michael Politino; Sean M. Tonzi; John J. Usher; William V. Burnett; Guna Romancik


Archive | 1984

Production of cephalosporin C

David Anthony Lowe; Guna Romancik; Leonardo M. Cappelletti; Richard Paul Elander


Archive | 2002

D-hydantoinase aus ochrobactrum anthropi D-hydantoinase from Ochrobactrum anthropi

Michael Politino; Sean M. Tonzi; Guna Romancik; John J. Usher; David Anthony Lowe


Archive | 2002

D-hydantoinase issus d'ochrobactrum anthropi

David Anthony Lowe; Michael Politino; Guna Romancik; Sean M. Tonzi; John J. Usher


Archive | 1998

Chemical acetylation of desacetyl-cephalosporins

Guna Romancik; John J. Usher

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