Linked Life Data

12732432

Source:http://linkedlifedata.com/resource/pubmed/id/12732432

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2003-5-6
pubmed:abstractText
Medically useful semisynthetic cephalosporin antibiotics are made from precursor 7-aminocephalosporanic acid (7-ACA). Cephalosporin acylase (CA), which catalyzes hydrolysis of both glutaryl-7-aminocephalosporanic acid (GL-7ACA) and cephalosporin C (CPC) to 7-ACA, is thus a very important enzyme for producing semisynthetic beta-lactam antibiotics. To facilitate the attempts of obtaining the microorganisms with higher CA activity from natural environments, a new and specific method for screening environmental microorganisms with cephalosporin acylase activity was developed. The core part of cephalosporin was replaced by 6-amino penicillinic acid (6-APA) to generate new substrates glutaryl-6-APA and adipoyl-6-APA for screening. Serratia marcescens that is sensitive to 6-APA and resistant to penicillin G, glutaryl-6-APA and adipoyl-6-APA was used as an indicator strain in an overlaid-agar screening system. A strain capable of producing cephalosporin acylase was selected from thousands of candidates by this method. Because of its specificity, simplicity and sensitivity, the method could be easily installed into a high-throughout system.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0167-7012
pubmed:author
pubmed:issnType
Print
pubmed:volume
54
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
131-5
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2003
pubmed:articleTitle
A rapid and specific method to screen environmental microorganisms for cephalosporin acylase activity.
pubmed:affiliation
Laboratory of Molecular Microbiology, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 300 Fenglin Road, Shanghai 200032, PR China.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't, Evaluation Studies