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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1990-2-22
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pubmed:abstractText |
The type L isozyme of potato tuber alpha-glucan phosphorylase [EC 2.4.1.1], a dimer of 104-kDa subunits, is compartmentalized in the amyloplast. We have cloned a nearly full-length cDNA encoding this isozyme from a cDNA library of immature potato tuber. The sequence was supplemented by a partial genomic clone. The transcription initiation site was identified by a primer extension experiment to be 43 bases upstream from the translation initiation ATG codon. The message encodes a polypeptide of 966 amino acid residues, of which 50 residues constitute an N-terminal extended peptide and 916 residues make up the mature protein. In the mature protein region, the nucleotide sequence is consistent with the chemically determined amino acid sequence (Nakano, K. & Fukui, T. (1986) J. Biol. Chem. 261, 8230-8236). The N-terminal extension bears characteristic features of the transit peptides of nuclear-encoded chloroplastic proteins, and is therefore regarded as a transit peptide for the amyloplast. This peptide is rich in basic amino acids (5 arginines, 3 lysines, and 5 histidines) and hydroxylic amino acids (7 serines and 5 threonines), but lacks acidic amino acids. It is therefore classified as one of the most basic transit peptides so far reported.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Oct
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pubmed:issn |
0021-924X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
106
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
691-5
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pubmed:dateRevised |
2007-12-19
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pubmed:meshHeading |
pubmed-meshheading:2481677-Base Sequence,
pubmed-meshheading:2481677-Chloroplasts,
pubmed-meshheading:2481677-Cloning, Molecular,
pubmed-meshheading:2481677-DNA,
pubmed-meshheading:2481677-Molecular Sequence Data,
pubmed-meshheading:2481677-Peptides,
pubmed-meshheading:2481677-Phosphorylases,
pubmed-meshheading:2481677-Poly A,
pubmed-meshheading:2481677-RNA,
pubmed-meshheading:2481677-Solanum tuberosum,
pubmed-meshheading:2481677-Transcription, Genetic
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pubmed:year |
1989
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pubmed:articleTitle |
Molecular cloning of cDNA encoding potato amyloplast alpha-glucan phosphorylase and the structure of its transit peptide.
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pubmed:affiliation |
Institute of Scientific and Industrial Research, Osaka University.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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