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Biochem Biophys Res Commun. 1995 Dec 14;217(2):696-703.

Developmental and tissue distribution of expression of nonmuscle and smooth muscle isoforms of myosin light chain kinase.

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  • 1Division of Cardiology, Case Western Reserve University, Cleveland, OH 44106, USA.

Abstract

Using a combination of Northern and Western blotting and RT-PCR, we demonstrate the existence of a high molecular mass MLCK, which is expressed during chicken embryogenesis. It is expressed in developing smooth muscle containing tissues, and is detected at low concentrations in adult tissues. Direct sequencing of the RT-PCR product from embryonic tissue RNA revealed that the embryonic, high molecular mass MLCK is indeed the previously cloned "nonmuscle MLCK". Therefore, the high molecular mass MLCK should be termed embryonic/non-muscle MLCK isoform. Curiously, cultured embryonic gizzard and vascular smooth muscle cells express the lower molecular mass smMLCK protein, albeit at lower levels than in the in vivo tissues.

PMID:
7503753
[PubMed - indexed for MEDLINE]

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