rdf:type |
|
lifeskim:mentions |
|
pubmed:issue |
5241
|
pubmed:dateCreated |
1996-1-4
|
pubmed:abstractText |
Intracellular calcium (Ca2+) inhibits the opening of L-type (alpha 1C) Ca2+ channels, providing physiological control of Ca2+ entry into a wide variety of cells. A structural determinant of this Ca(2+)-sensitive inactivation was revealed by chimeric Ca2+ channels derived from parental alpha 1C and alpha 1E channels, the latter of which is a neuronal channel lacking Ca2+ inactivation. A consensus Ca(2+)-binding motif (an EF hand), located on the alpha 1C subunit, was required for Ca2+ inactivation. Donation of the alpha 1C EF-hand region to the alpha 1E channel conferred the Ca(2+)-inactivating phenotype. These results strongly suggest that Ca2+ binding to the alpha 1C subunit initiates Ca2+ inactivation.
|
pubmed:language |
eng
|
pubmed:journal |
|
pubmed:citationSubset |
IM
|
pubmed:chemical |
|
pubmed:status |
MEDLINE
|
pubmed:month |
Dec
|
pubmed:issn |
0036-8075
|
pubmed:author |
|
pubmed:issnType |
Print
|
pubmed:day |
1
|
pubmed:volume |
270
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
|
pubmed:pagination |
1502-6
|
pubmed:dateRevised |
2007-11-15
|
pubmed:meshHeading |
pubmed-meshheading:7491499-Amino Acid Sequence,
pubmed-meshheading:7491499-Barium,
pubmed-meshheading:7491499-Calcium,
pubmed-meshheading:7491499-Calcium Channels,
pubmed-meshheading:7491499-Cell Line,
pubmed-meshheading:7491499-Cyclic AMP-Dependent Protein Kinases,
pubmed-meshheading:7491499-Humans,
pubmed-meshheading:7491499-Ion Channel Gating,
pubmed-meshheading:7491499-Molecular Sequence Data,
pubmed-meshheading:7491499-Patch-Clamp Techniques,
pubmed-meshheading:7491499-Phosphorylation,
pubmed-meshheading:7491499-Recombinant Fusion Proteins,
pubmed-meshheading:7491499-Sequence Alignment,
pubmed-meshheading:7491499-Up-Regulation
|
pubmed:year |
1995
|
pubmed:articleTitle |
Essential Ca(2+)-binding motif for Ca(2+)-sensitive inactivation of L-type Ca2+ channels.
|
pubmed:affiliation |
Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
|
pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, Non-U.S. Gov't
|