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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
8
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pubmed:dateCreated |
1990-4-9
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pubmed:abstractText |
The folding of in vitro synthesized outer membrane protein PhoE of Escherichia coli was studied in immunoprecipitation experiments with monoclonal antibodies which recognize cell surface-exposed conformational epitopes. The signal sequence appears to interfere with the formation of these conformational epitopes, since a mutant PhoE protein which lacks the majority of the signal peptide could be precipitated four times better than the wild type precursor. Sodium dodecyl sulfate-polyacrylamide gel electrophoresis of the immunoprecipitated PhoE protein revealed that part of the immunoprecipitated PhoE was present as a heat-modifiable form of the protein which migrated faster in the gels than the completely denatured protein. This form of the protein probably represents a folded monomer which might be an intermediate in the assembly of the protein. Outer membrane vesicles were required to induce the formation of small amounts of heat-stable trimers, the functional form of the protein in vivo.
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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 |
Mar
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pubmed:issn |
0021-9258
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
15
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pubmed:volume |
265
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
4646-51
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:2155233-Amino Acid Sequence,
pubmed-meshheading:2155233-Bacterial Outer Membrane Proteins,
pubmed-meshheading:2155233-Cloning, Molecular,
pubmed-meshheading:2155233-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:2155233-Escherichia coli,
pubmed-meshheading:2155233-Hot Temperature,
pubmed-meshheading:2155233-Immunosorbent Techniques,
pubmed-meshheading:2155233-Macromolecular Substances,
pubmed-meshheading:2155233-Molecular Sequence Data,
pubmed-meshheading:2155233-Molecular Weight,
pubmed-meshheading:2155233-Mutation,
pubmed-meshheading:2155233-Plasmids,
pubmed-meshheading:2155233-Porins,
pubmed-meshheading:2155233-Protein Conformation,
pubmed-meshheading:2155233-Protein Sorting Signals
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pubmed:year |
1990
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pubmed:articleTitle |
Assembly of an in vitro synthesized Escherichia coli outer membrane porin into its stable trimeric configuration.
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pubmed:affiliation |
Institute of Molecular Biology and Medical Biotechnology, University of Utrecht, The Netherlands.
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pubmed:publicationType |
Journal Article
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