| pubmed-article:3415648 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C0699788 | lld:lifeskim |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C0024660 | lld:lifeskim |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C1523385 | lld:lifeskim |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C0220781 | lld:lifeskim |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C1305923 | lld:lifeskim |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C1709694 | lld:lifeskim |
| pubmed-article:3415648 | lifeskim:mentions | umls-concept:C1709634 | lld:lifeskim |
| pubmed-article:3415648 | pubmed:issue | 3 | lld:pubmed |
| pubmed-article:3415648 | pubmed:dateCreated | 1988-10-7 | lld:pubmed |
| pubmed-article:3415648 | pubmed:abstractText | An immunological analysis has been conducted of early events in the biosynthesis, import and assembly of the mammalian pyruvate dehydrogenase complex (PDC). For this purpose, monospecific polyclonal antisera were produced against the intact assembly from ox heart, Mr 8.5 x 10(6), and each of its component polypeptides, E1 alpha, E1 beta, E2, E3 and protein X. Optimal detergent-based incubation mixtures were developed for obtaining clean immunoprecipitation of PDC polypeptides and their precursors from [35S]methionine-labelled extracts of PK-15 (pig kidney), NBL-1 (bovine kidney) and BRL (Buffalo Rat liver) cells. In PK-15 cells, independent higher Mr species, corresponding to precursors of the E2, E1 alpha and E1 beta subunits of PDC, could be detected by immune precipitation and fluorography after incubation of intact cells for 4 h with [35S]methionine and 1-2 mM-2,4-dinitrophenol or 10-15 microM-carbonyl cyanide p-trifluoromethoxyphenylhydrazone. Similar precursor states could be observed in uncoupler-treated BRL or NBL-1 cells. Pre-E1 alpha, pre-E1 beta and also pre-E3, have signal sequences in the Mr range 1500-3000 while pre-E2 contains a long additional segment of Mr 7000-9000. All of these forms exhibit similar kinetics of processing to the mature subunits with a transit time of 10-12 min. In NBL-1 cells, E3 is present in the immune complexes formed with anti-PDC serum whereas this is not the case in PK-15 cells. Thus, there are significant variations in the affinity of lipoamide dehydrogenase (E3) for the E2 core structure in different species. Pre-E1 alpha accumulates only poorly in PK-15 cells and is aberrantly processed on removal of uncoupler. This precursor is markedly more stable in NBL-1 and BRL cells. The lack of detection of a precursor form of component X is also discussed. | lld:pubmed |
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| pubmed-article:3415648 | pubmed:language | eng | lld:pubmed |
| pubmed-article:3415648 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:3415648 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:3415648 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:3415648 | pubmed:month | May | lld:pubmed |
| pubmed-article:3415648 | pubmed:issn | 0264-6021 | lld:pubmed |
| pubmed-article:3415648 | pubmed:author | pubmed-author:LindsayJ GJG | lld:pubmed |
| pubmed-article:3415648 | pubmed:author | pubmed-author:DickJJ | lld:pubmed |
| pubmed-article:3415648 | pubmed:author | pubmed-author:GibbG MGM | lld:pubmed |
| pubmed-article:3415648 | pubmed:author | pubmed-author:De... | lld:pubmed |
| pubmed-article:3415648 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:3415648 | pubmed:day | 1 | lld:pubmed |
| pubmed-article:3415648 | pubmed:volume | 251 | lld:pubmed |
| pubmed-article:3415648 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:3415648 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:3415648 | pubmed:pagination | 817-23 | lld:pubmed |
| pubmed-article:3415648 | pubmed:dateRevised | 2010-9-10 | lld:pubmed |
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| pubmed-article:3415648 | pubmed:year | 1988 | lld:pubmed |
| pubmed-article:3415648 | pubmed:articleTitle | Biosynthesis, import and processing of precursor polypeptides of mammalian mitochondrial pyruvate dehydrogenase complex. | lld:pubmed |
| pubmed-article:3415648 | pubmed:affiliation | Department of Biochemistry, University of Glasgow, U.K. | lld:pubmed |
| pubmed-article:3415648 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:3415648 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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