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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1985-5-16
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pubmed:databankReference | |
pubmed:abstractText |
The nucleotide sequence of the pldA gene of Escherichia coli K-12, which codes for detergent-resistant phospholipase A (DR-phospholipase A), located in the outer membrane, was determined and the amino acid sequence of DR-phospholipase A was deduced. DR-phospholipase A contains 269 amino acids, resulting in a protein with a molecular weight of 30,809. It does not contain any cysteine residues and seems to be synthesized first as a precursor with a typical signal peptide composed of 20 amino acids. The NH2-terminus of the mature protein is glutamine, a polar amino acid, while other outer membrane proteins so far determined have a nonpolar amino acid there. The hydropathy profile of the deduced amino acid sequence of DR-phospholipase A was studied. Most of the region was rather hydrophilic and there were no stretches of hydrophobic amino acids. Computer analysis showed that there are no homologies between DR-phospholipase A and other extracellular phospholipases whose amino acid sequences are known. The candidates for the promoter region of the pldA gene, the 5'-flanking region, have a significantly high AT content, while the AT content of the coding region is about the same as the average AT content of the E. coli chromosome. A typical rho-independent transcription termination site is also present at the 3'-flanking region. This is the first example of the primary structure of a membrane-bound phospholipase.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Codon,
http://linkedlifedata.com/resource/pubmed/chemical/DNA, Bacterial,
http://linkedlifedata.com/resource/pubmed/chemical/Peptides,
http://linkedlifedata.com/resource/pubmed/chemical/Phospholipases,
http://linkedlifedata.com/resource/pubmed/chemical/Phospholipases A,
http://linkedlifedata.com/resource/pubmed/chemical/Protein Sorting Signals
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0021-924X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
96
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
1655-64
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pubmed:dateRevised |
2007-12-19
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pubmed:meshHeading |
pubmed-meshheading:6397464-Amino Acid Sequence,
pubmed-meshheading:6397464-Base Sequence,
pubmed-meshheading:6397464-Codon,
pubmed-meshheading:6397464-DNA, Bacterial,
pubmed-meshheading:6397464-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:6397464-Escherichia coli,
pubmed-meshheading:6397464-Genes,
pubmed-meshheading:6397464-Genes, Bacterial,
pubmed-meshheading:6397464-Peptides,
pubmed-meshheading:6397464-Phospholipases,
pubmed-meshheading:6397464-Phospholipases A,
pubmed-meshheading:6397464-Plasmids,
pubmed-meshheading:6397464-Protein Sorting Signals
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pubmed:year |
1984
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pubmed:articleTitle |
The DNA sequence encoding pldA gene, the structural gene for detergent-resistant phospholipase A of E. coli.
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pubmed:publicationType |
Journal Article,
Comparative Study,
Research Support, Non-U.S. Gov't
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