rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
2-3
|
pubmed:dateCreated |
2007-8-17
|
pubmed:abstractText |
The monoclonal antibody to the beta-subunit of H(+)/K(+)-ATPase (mAbHKbeta) cross-reacts with a protein that acts as a molecular chaperone for the structural maturation of sarcoplasmic reticulum (SR) Ca(2+)-ATPase. We partially purified a mAbHKbeta-reactive 65-kDa protein from Xenopus ovary. After in-gel digestion and peptide sequencing, the 65-kDa protein was identified as methionine aminopeptidase II (MetAP2). The effects of MetAP2 on SR Ca(2+)-ATPase expression were examined by injecting the cRNA for MetAP2 into Xenopus oocytes. Immunoprecipitation and pulse-chase experiments showed that MetAP2 was transiently associated with the nascent SR Ca(2+)-ATPase. Synthesis of functional SR Ca(2+)-ATPase was facilitated by MetAP2 and prevented by injecting an antibody specific for MetAP2. These results suggest that MetAP2 acts as a molecular chaperone for SR Ca(2+)-ATPase synthesis.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Feb
|
pubmed:issn |
0022-2631
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:volume |
215
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
105-10
|
pubmed:meshHeading |
pubmed-meshheading:17415608-Amino Acid Sequence,
pubmed-meshheading:17415608-Aminopeptidases,
pubmed-meshheading:17415608-Animals,
pubmed-meshheading:17415608-Female,
pubmed-meshheading:17415608-Immunoprecipitation,
pubmed-meshheading:17415608-Microinjections,
pubmed-meshheading:17415608-Molecular Chaperones,
pubmed-meshheading:17415608-Molecular Sequence Data,
pubmed-meshheading:17415608-Oocytes,
pubmed-meshheading:17415608-Protein Binding,
pubmed-meshheading:17415608-RNA, Complementary,
pubmed-meshheading:17415608-Rabbits,
pubmed-meshheading:17415608-Sarcoplasmic Reticulum Calcium-Transporting ATPases,
pubmed-meshheading:17415608-Xenopus laevis
|
pubmed:year |
2007
|
pubmed:articleTitle |
Methionine aminopeptidase II: A molecular chaperone for sarcoplasmic reticulum calcium ATPase.
|
pubmed:affiliation |
Department of Bioscience and Bioinformatics, Kyushu Institute of Technology, Iizuka 820-8502, Japan.
|
pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
|