Caldesmon is a protein that in humans is encoded by the CALD1gene.[3][4]
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.[4]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^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. PMID 1885618.
Gusev NB (2002). "Some properties of caldesmon and calponin and the participation of these proteins in regulation of smooth muscle contraction and cytoskeleton formation". Biochemistry Mosc. 66 (10): 1112–21. doi:10.1023/A:1012480829618. PMID 11736632. S2CID 310781.
Wang CL (2002). "Caldesmon and smooth-muscle regulation". Cell Biochem. Biophys. 35 (3): 275–88. doi:10.1385/CBB:35:3:275. PMID 11894847. S2CID 195271255.
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Horiuchi KY, Chacko S (1989). "Interaction between caldesmon and tropomyosin in the presence and absence of smooth muscle actin". Biochemistry. 27 (22): 8388–93. doi:10.1021/bi00422a014. PMID 3242591.
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Nimmrich I, Erdmann S, Melchers U, et al. (2000). "Seven genes that are differentially transcribed in colorectal tumor cell lines". Cancer Lett. 160 (1): 37–43. doi:10.1016/S0304-3835(00)00553-X. PMID 11098082.
Hisaoka M, Wei-Qi S, Jian W, et al. (2003). "Specific but variable expression of h-caldesmon in leiomyosarcomas: an immunohistochemical reassessment of a novel myogenic marker". Appl. Immunohistochem. Mol. Morphol. 9 (4): 302–8. doi:10.1097/00022744-200112000-00003. PMID 11759055. S2CID 25653139.
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