Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-1-31
pubmed:abstractText
NIT2, a positive-acting regulatory protein in Neurospora crassa, activates the expression of a series of unlinked structural genes that encode nitrogen catabolic enzymes. NIT2 binding sites in the promoter regions of nit3, alc and lao have at least two GATA sequence elements. We have examined the binding affinity of the NIT2 protein for the yeast DAL5 wild-type upstream activation sequence UASNTR, which contains two GATA elements, and for a series of mutated binding sites, each differing from the wild-type site by a single base. Substitution for individual nucleotides within 5' or 3' sequences that flank the GATA elements had only modest effects upon NIT2 binding. In contrast, nearly all substitutions within the GATA elements almost completely eliminated NIT2 binding, demonstrating the importance of the GATA sequence for NIT2 binding. Four high-affinity binding sites for the NIT2 protein were found within a central region of the nit-2 gene itself.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0026-8925
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
245
pubmed:geneSymbol
nit-2
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
512-6
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
DNA binding site specificity of the Neurospora global nitrogen regulatory protein NIT2: analysis with mutated binding sites.
pubmed:affiliation
Department of Biochemistry, Ohio State University, Columbus 43210.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.