Developmental regulation of the L-type calcium channel α1C subunit expression in heart

作者: Lei Leu , Donald O'Hara , Steven Cala , Indu Poornima , Ronald Hines

DOI: 10.1023/A:1007013900827

关键词:

摘要: We used Northern analyses, RNase protection assays and immunoblot analyses to examine the relationship among developmental age of heart, abundance mRNA L-type calcium channel α1Csubunit protein, establish size native protein in heart. analysis, assays, immunoblots were study RNA from rat heart various ages. In fetal adult ventricles there was a predominant 8.3-kb transcript for α1C subunit with no change during development. demonstrated 2-fold increase DHP receptor message postnatal Immunoblots identified 240 kD corresponding predicted molecular mass full length subunit. No observed at any stage evidence truncated isoform. There an approximate ventricular homogenates Thus, developing alterations properties development appear result neither alternative splicing that produces smaller nor expression but least part transcriptionally-regulated kDa polypeptide.

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