Linked Life Data

8709960

Source:http://linkedlifedata.com/resource/pubmed/id/8709960

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1996-9-10
pubmed:abstractText
An Aspergillus niger strain has been constructed in which the pH-dependent regulatory gene, pacC, was disrupted. The pacC gene of A. niger, like that of A. nidulans, is involved in the regulation of acid phosphatase expression. Disruptants were identified by a reduction in acid phosphatase staining of colonies. Southern analysis demonstrated integration of the disruption plasmid at the pacC locus and Northern analysis showed that the disruption strain produced a truncated pacC mRNA of 2.2 kb (as compared to 2.8 kb in the wild type). The strain carrying the pacC disruption was used to assign the pacC gene to linkage group IV; this was confirmed by CHEF electrophoresis and Southern analysis. This strain further allowed us to determine which extracellular enzyme and transport systems are under the control of pacC in A. niger. Expression of the A. niger pacC wild-type gene and the truncated pacC gene showed that, in contrast to the auto-regulated wild-type expression, which was elevated only at alkaline pH, the truncated pacC gene was deregulated, as high-level expression occurred regardless of the pH of the culture medium. Analysis of the phosphatase spectrum by isoelectric focussing and enzyme activity staining both in the wild-type and the pacC disruptant showed that at least three acid phosphatases are regulated by the pacC. For the single alkaline phosphatase no pH regulation was observed.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0026-8925
pubmed:author
pubmed:issnType
Print
pubmed:day
19
pubmed:volume
251
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
542-50
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Regulation of acid phosphatases in an Aspergillus niger pacC disruption strain.
pubmed:affiliation
Section Molecular Genetics of Industrial Microorganisms, Wageningen Agricultural University, The Netherlands.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't