Caldesmon

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An Error has occurred retrieving Wikidata item for infobox Caldesmon is a protein that in humans is encoded by the CALD1 gene.[1][2]

Caldesmon is a calmodulin binding protein. Like calponin, caldesmon tonically inhibits the ATPase activity of myosin in smooth muscle.

This gene encodes a calmodulin- and actin-binding protein that plays an essential role in the regulation of smooth muscle and nonmuscle contraction. The conserved domain of this protein possesses the binding activities to Ca++-calmodulin, actin, tropomyosin, myosin, and phospholipids. This protein is a potent inhibitor of the actin-tropomyosin activated myosin MgATPase, and serves as a mediating factor for Ca++-dependent inhibition of smooth muscle contraction. Alternative splicing of this gene results in multiple transcript variants encoding distinct isoforms.[2]

Immunochemistry

In diagnostic immunochemistry, caldesmon is a marker for smooth muscle differentiation.

References

  1. ^ Novy RE, Lin JL, Lin JJ (Oct 1991). "Characterization of cDNA clones encoding a human fibroblast caldesmon isoform and analysis of caldesmon expression in normal and transformed cells". J Biol Chem. 266 (25): 16917–24. doi:10.1016/S0021-9258(18)55390-4. PMID 1885618.
  2. ^ a b "Entrez Gene: CALD1 caldesmon 1".

Further reading

External links