Linked Life Data

2775454

Source:http://linkedlifedata.com/resource/pubmed/id/2775454

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1989-10-18
pubmed:abstractText
Two mouse monoclonal antibodies (PE-1 and PE-2) raised to a beta-galactosidase-preproenkephalin A(69-207) fusion peptide recognize pro-enkephalin A (pro-enk-A) peptides of 33-5 kDa isolated from bovine adrenal chromaffin granules. The preliminary characterization of the high molecular weight adrenomedullary pro-enk-A peptides recognized by PE-1 and PE-2 is described. The high molecular weight peptides were resolved after Sephadex G-50 chromatography and high-performance liquid chromatography (HPLC) into three components (peaks I, II and III). Immunoblot analysis showed each HPLC peak to be heterogeneous. Peak I contained PE-1-and PE-2-immunoreactive peptides of 33, 29, 24 and 22 kDa; peak II contained a peptide of 22 kDa recognized by PE-2, and peptides of 24 and 22 kDa recognized by PE-1; peak III contained a PE-2-immunoreactive peptide of 15 kDa and PE-1-immunoreactive peptide of 18 kDa. Using polyclonal antibodies to peptide F and methionineenkephalin-Arg6-Gly7-Leu8 (MetEnk-RGL), the 22 kDa band cross-reacted with both MetEnk-RGL and peptide F antibodies, whilst the 24 kDa band was shown to possess predominantly MetEnk-RGL immunoreactivity. The 15 kDa (PE-2-immunoreactive) band was recognized by the peptide F but not the MetEnk-RGL antibody, whereas the polyclonal antibodies did not recognize the 18 kDa (PE-1-immunoreactive) band. We propose that the immunological and size characteristics of some of these peptides (29, 24/22, 15 kDa) suggest their similarity to the peptides of predicted molecular mass 23.3, 18.2 and 12.6 kDa previously found in bovine adrenal medulla. The results also indicate the existence of high molecular weight pro-enk-A peptides shortened at the N-terminus. The use of an immunoradiometric assay designed to measure the proenk-A-derived 18.2 kDa peptide using PE-2 and an affinity purified and radioiodinated MetEnk-RGL IgG has supported these findings.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0952-5041
pubmed:author
pubmed:issnType
Print
pubmed:volume
2
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
119-29
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Identification of high molecular weight peptides in bovine adrenomedullary chromaffin granules using monoclonal antibodies to a preproenkephalin A fusion peptide.
pubmed:affiliation
Department of Biochemistry & Physiology, University of Reading, Whiteknights.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't