| pubmed-article:6330030 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:6330030 | lifeskim:mentions | umls-concept:C0035495 | lld:lifeskim |
| pubmed-article:6330030 | lifeskim:mentions | umls-concept:C0071728 | lld:lifeskim |
| pubmed-article:6330030 | pubmed:issue | 1 | lld:pubmed |
| pubmed-article:6330030 | pubmed:dateCreated | 1984-8-20 | lld:pubmed |
| pubmed-article:6330030 | pubmed:abstractText | A protein homooligomer was purified from both the cell envelope fractions and the saline extracts of Rhodopseudomonas sphaeroides cells. This oligomer exhibited strong porin activity when reconstituted into proteoliposomes with egg phosphatidylcholine. In the saline extracts of both chemotrophically and phototrophically grown cells, the porin oligomer was the most predominant polypeptide, which produced pores whose behavior toward various sugars could be approximated by hollow cylinders of 0.62 nm in radius. The oligomer was dissociated, in the presence of EDTA, into monomers that migrated on sodium dodecyl sulfate-polyacrylamide gel electrophoresis as though their molecular weight was about 47,000. The monomer was active in the reconstitution assay and produced pores with sizes comparable to those produced by the oligomer. Circular dichroism spectra indicated the predominance of beta-sheet structure in both the oligomeric and EDTA-dissociated monomeric forms. Drastic conditions, for example, precipitation with 10% trichloroacetic acid or heating for a few hours at 100 degrees C in sodium dodecyl sulfate, were necessary to denature the protein into a form with a reduced content of beta-sheet structure. | lld:pubmed |
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| pubmed-article:6330030 | pubmed:language | eng | lld:pubmed |
| pubmed-article:6330030 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:6330030 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:6330030 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:6330030 | pubmed:month | Jul | lld:pubmed |
| pubmed-article:6330030 | pubmed:issn | 0021-9193 | lld:pubmed |
| pubmed-article:6330030 | pubmed:author | pubmed-author:WeckesserJJ | lld:pubmed |
| pubmed-article:6330030 | pubmed:author | pubmed-author:NikaidoHH | lld:pubmed |
| pubmed-article:6330030 | pubmed:author | pubmed-author:ZalmanL SLS | lld:pubmed |
| pubmed-article:6330030 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:6330030 | pubmed:volume | 159 | lld:pubmed |
| pubmed-article:6330030 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:6330030 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:6330030 | pubmed:pagination | 199-205 | lld:pubmed |
| pubmed-article:6330030 | pubmed:dateRevised | 2009-11-18 | lld:pubmed |
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| pubmed-article:6330030 | pubmed:year | 1984 | lld:pubmed |
| pubmed-article:6330030 | pubmed:articleTitle | Porin from Rhodopseudomonas sphaeroides. | lld:pubmed |
| pubmed-article:6330030 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:6330030 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
| pubmed-article:6330030 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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