Linked Life Data

20948163

Source:http://linkedlifedata.com/resource/pubmed/id/20948163

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2010-11-24
pubmed:abstractText
The frequency of the allele containing three derived nonsynonymous SNPs (157C, 378M, 681M) of the gene encoding calcium permeable TRPV6 channels expressed in the intestine has been increased by positive selection in non-African populations. To understand the nature of these SNPs, we compared the properties of Ca²+ influx of ancestral (in African populations) and derived-TRPV6 (in non-African populations) channels with electrophysiological, Ca²+-imaging, and morphological methods using both the Xenopus oocyte and mammalian cell expression systems. Functional electrophysiological and Ca²+-imaging analyses indicated that the derived-TRPV6 elicited more Ca²+ influx than the ancestral one in TRPV6-expressing cells where both channels were equally expressed in the cells. Ca²+-inactivation properties in the ancestral- and derived-TRPV6 were almost the same. Furthermore, fluorescence resonance energy transfer (FRET) analysis showed that both channels have similar multimeric formation properties, suggesting that derived-TRPV6 itself could cause higher Ca²+ influx. These findings suggest that populations having derived-TRPV6 in non-African areas may absorb higher Ca²+ from the intestine than ancestral-TRPV6 in the African area.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1347-8648
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
114
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
281-91
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Derived (mutated)-types of TRPV6 channels elicit greater Ca²+ influx into the cells than ancestral-types of TRPV6: evidence from Xenopus oocytes and mammalian cell expression system.
pubmed:affiliation
Department of Molecular and Cellular Biology, Nagasaki University Graduate School of Biomedical Sciences, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't