Abstract
Three inositol 1,4,5-trisphosphate receptor (IP3R) cDNAs, designated IP3R-II, -III, and -IV, were cloned homology a mouse placenta cDNA library. All three display strong originally in membrane-spanning domains M7 and M8 to the inantly cloned cerebellar IP3R-I, with divergences predominantly in cytoplasmic domains. Levels of mRNA for the three additional IP3Rs in general are substantially lower than for IP3R-I, though in the gastrointestinal tract the levels of IP3R-III may be comparable to IP3R-I. Cerebellar Purkinje cells express at least two and possibly three distinct IP3Rs, suggesting hrterogeneity of IP3 action within a single cell.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 4265-4269 |
| Number of pages | 5 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Volume | 89 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1992 |
Keywords
- Cerebellar purkinje cells
- Intracellular calcium
- Plasma membrane
- Second messengers
- T lymphocytes
ASJC Scopus subject areas
- General
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