Abstract:
:The aim of the present study was to identify a high affinity InsP4 receptor in membranes from cerebellum or brain from several species. In samples obtained from sheep, beef, human and rat, a 42 kDa protein represents an Ins(1,3,4,5)P4 receptor, similar to the InsP4 receptor from pig cerebellum, which we have described previously using an InsP4-photoaffinity analogue (Reiser et al., Biochem. J. 1991, 280, 533). CNBr cleavage of the pig receptor protein for peptide sequencing revealed peptide sequences which demonstrate that the 42 kDa InsP4 receptor is a novel protein. Two synthetic peptides derived from the pig receptor were used to generate peptide-specific antisera which recognized also the intact receptor protein from pig. The two antisera showed different reactivity with the InsP4 receptor purified from pig and human compared to sheep, beef, and rat. This indicates a species heterogeneity of this protein.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Reiser G,Kunzelmann U,Hülser E,Stricker R,Hoppe J,Lottspeich F,Kalbacher Hdoi
10.1006/bbrc.1995.2251subject
Has Abstractpub_date
1995-09-05 00:00:00pages
20-7issue
1eissn
0006-291Xissn
1090-2104pii
S0006-291X(85)72251-6journal_volume
214pub_type
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