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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
8
pubmed:dateCreated
2010-7-26
pubmed:abstractText
Using comprehensive genetic studies on neuronal stem/progenitors cells through genome-wide screening with oligonucleotide arrays, we identified an endoplasmic reticulum (ER) -resident protein, Tweety homologue 1 (ttyh1). Ttyh1 encodes a glycosylated protein composed of five predicted transmembrane segments and a C-terminus that is enriched in negatively charged residues capable of Ca(2+) binding. Ttyh1-containing membranes changed to segmented tubuloreticular structures during mitosis, suggesting that the ER-containing Ttyh1 could be responsible for Ca(2+) sequestration and Ca(2+) concentration regulation during mitosis. Ttyh1 inactivation in mice resulted in early embryonic lethality before organization of the nervous system, revealing that ttyh1 is essential in murine embryonic development. Our findings indicate that Ttyh1 plays an indispensable role during mitosis in early embryogenesis, possibly by maintaining Ca(2+) homeostasis in the ER.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1097-0177
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
239
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
2233-45
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Ttyh1, a Ca(2+)-binding protein localized to the endoplasmic reticulum, is required for early embryonic development.
pubmed:affiliation
Department of Pediatrics, Graduate School of Medicine, Kyoto University, Kyoto, Japan.
pubmed:publicationType
Journal Article