Linked Life Data

2656410

Source:http://linkedlifedata.com/resource/pubmed/id/2656410

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-6-26
pubmed:databankReference
pubmed:abstractText
The Escherichia coli hemB gene, which encodes 5-aminolevulinic acid dehydratase, and was cloned into pTZ18U, a multicopy plasmid, was sequenced. The hemB insert was double-digested with restriction enzymes and recloned back into pTZ18U and pTZ19U to allow for sequencing in two directions. In a second procedure, used to fill in gaps and to confirm the sequence derived from the first procedure, the whole insert was cloned into M13 phages. A nested set of deletions was constructed and recloned into M13. Both the double-digested fragments cloned into plasmids pTZ18U and pTZ19U and the overlapping fragments contained in M13 phages were sequenced using the dideoxy procedure with [35S]dATP. Computer software was used to identify coding regions and the correct reading frame. Two promoter regions, two Shine-Dalgarno sequences and two possible start sites were identified. Extensive homologies with yeast (36%), human liver (40%) and rat liver (40%) amino-acid (aa) sequences were observed, especially in the 16-aa Zn-binding region (75%) and the 4 aa surrounding the essential lysine at the active site (100% for rat and human proteins). Computer analysis of promoter strength and two independent analyses of codon usage indicated that the hemB gene is moderately expressed.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0378-1119
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
75
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
177-84
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
The structure of the Escherichia coli hemB gene.
pubmed:affiliation
Department of Biochemistry, City College, City University of New York.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't