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