Calponin (h1 isoform) was characterized as a smooth muscle specific, actin-, tropomyosin-,
calmodulin-binding protein and described as a factor which inhibits contraction. H2 …

Abstract cDNA clones encoding a calponin isoform with 309 amino acids have been isolated
from human heart. The deduced amino acid polypeptide (Mr 33,697) showed a neutral …

Calponin is a smooth muscle specific, actin-, tropomyosin-and calmodulin-binding protein
thought to be involved in some way in the regulation or modulation of contraction. Here we …

Smooth muscle contraction is regulated primarily by the reversible phosphorylation of
myosin II (Somlyo & Somlyo, 1994), but may also be modulated by a thin filamentassociated …

Publisher Summary The chapter discusses the a 34-kDa protein that is bound to actin and
actin-tropomyosin in a Ca 2+-independent manner and to calmodulin in a Ca 2+-dependent …

h2-Calponin is found in both smooth muscle and nonmuscle cells, and its function remains
to be established. Western blots with specific monoclonal antibodies detected significant …

Calponin is an actin‐, tropomyosin‐and Ca2+ calmodulin‐binding protein that inhibits in
vitro the actomyosin MgATPase. Basic and acidic variants of calponin have been described …

Two‐dimensional gel analysis of basic proteins in developing human smooth muscle
identifies calponin as a prominent marker of the differentiated phenotype. Adult tissue …

Calponin, an actin-and Ca (2+)-calmodulin-binding protein characterized as an inhibitory
factor of the smooth-muscle actomyosin activity, has also been shown to be present in some …

Three homologous calponin isoforms, named h1, h2, and acidic calponins, have been found
in birds and mammals. Based primarily on studies of chicken gizzard smooth muscle (h1) …