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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
5
|
pubmed:dateCreated |
1985-11-21
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pubmed:abstractText |
Soluble immune response suppressor (SIRS) isolated from the T cell hybrid 393D2.6 was originally reported to exist as at least two m.w. forms and to migrate on reverse-phase high-performance liquid chromatography columns as three separate species. In experiments presented here, a further analysis of the different chromatographic forms of SIRS has been carried out. SIRS-alpha elutes from C-18 reverse-phase columns in 20% propanol. When SIRS-alpha is subjected to isoelectric focusing, three biologically active species are isolated at approximately pH7, approximately pH6, and approximately pH5 (SIRS-alpha 7, SIRS-alpha 6, and SIRS-alpha 5, respectively). SIRS-beta elutes in 30% propanol, and on isoelectric focusing the biologic activity is found only at approximately pH7 (SIRS-beta 7). Both the alpha and beta forms of SIRS have nearly identical m.w. when subjected to molecular sieve chromatography and migrate with a m.w. of 11,000. The molecular basis for these isoforms is not yet clear but is consistent with earlier studies showing two separate messenger RNA species coding for SIRS.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
AIM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0022-1767
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
135
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
3238-42
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:4045193-Animals,
pubmed-meshheading:4045193-Chromatography, Gel,
pubmed-meshheading:4045193-Chromatography, High Pressure Liquid,
pubmed-meshheading:4045193-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:4045193-Isoelectric Focusing,
pubmed-meshheading:4045193-Mice,
pubmed-meshheading:4045193-Molecular Weight,
pubmed-meshheading:4045193-Protein Conformation,
pubmed-meshheading:4045193-Suppressor Factors, Immunologic
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pubmed:year |
1985
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pubmed:articleTitle |
Purification and analysis of isoforms of soluble immune response suppressor (SIRS).
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, Non-P.H.S.,
Research Support, Non-U.S. Gov't
|