Browsing Biochemistry and Molecular Biology by Type"Article"
Now showing items 1-20 of 43
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The Actin Binding Protein, Fesselin, is a Member of the Synaptopodin Family
(East Carolina University, 2008-07)Fesselin is a natively unfolded protein that is abundant in avian smooth muscle. Like many natively unfolded proteins, fesselin has multiple binding partners including actin, myosin, calmodulin and α-actinin. Fesselin ... -
Ca2+ and Ionic Strength Dependencies of S1-ADP Binding to Actin-Tropomyosin-Troponin: Regulatory Implications
(East Carolina University, 2004-09)Skeletal and cardiac muscle contraction are inhibited by the actin-associated complex of tropomyosin-troponin. Binding of Ca21 to troponin or binding of ATP-free myosin to actin reverses this inhibition. Ca21 and ATP-free ... -
Calponin interaction with alpha-actinin-actin: evidence for a structural role for calponin.
(East Carolina University, 1999-12)The purpose of this study was to address the paradox of calponin localization with a-actinin and filamin, two proteins with tandem calponin homology (CH) domains, by determining the effect of these proteins on the binding ... -
Characterization of a caldesmon fragment that competes with myosin-ATP binding to actin.
(East Carolina University, 1993-08)The protein caldesmon inhibits actin-activated ATP hydrolysis of myosin and inhibits the binding of myosin*ATP to actin. Afragment isolated from a chymotryptic digest of caldesmon contains features of the intact molecule ... -
Conservation of the regulated structure of folded myosin 2 in species separated by at least 600 million years of independent evolution
(East Carolina University, 2008-04-22)The myosin 2 family of molecular motors includes isoforms regulated in different ways. Vertebrate smooth-muscle myosin is activated by phosphorylation of the regulatory light chain, whereas scallop striated adductor-muscle ... -
The delta-14 Mutation of Human Cardiac Troponin T Enhances ATPase Activity and Alters the Cooperative Binding of S1-ADP to Regulated Actin
(East Carolina University, 2004-12-07)The complex of tropomyosin and troponin binds to actin and inhibits activation of myosin ATPase activity and force production of striated muscles at low free Ca2+ concentrations. Ca2+ stimulates ATP activity, and at ... -
Deoxyguanosine-resistant Leukemia L1210 Cells: Loss of Specific Deoxyribonecleoside Kinase Activity
(East Carolina University, 1993-01-05)A mouse leukemia L1210 cell line was selected for resistance to deoxyguanosine. The deoxyguanosine-resistant cells (dGuo-R) were 126-fold less sensitive to deoxyguanosine than the wild-type cells. The IC50 values for araC ... -
Ectopic expression of Hel-N1, an RNA-binding protein, increases glucose transporter (GLUT1) expression in 3T3-L1 adipocytes.
(East Carolina University, 1997-02)3T3-L1 preadipocytes ectopically expressing the mammalian RNA-binding protein Hel-N1 expressed up to 10-fold more glucose transporter (GLUT1) protein and exhibited elevated rates of basal glucose uptake. Hel-N1 is a member ... -
Equilibration and Exchange of Fluorescently Labeled Molecules in Skeletal Muscle Fibers Studied Using Confocal Microscopy
(East Carolina University, 1995-04)Diffusion of molecules into skinned muscle fibers is often necessary when studying muscle contraction and its regulation. Usually, it is assumed that diffusion of molecules is fast also in the structured system of a muscle ... -
Fesselin, a Synaptopodin-like Protein, Stimulates Actin Nucleation and Polymerization
(East Carolina University, 2001-11-27)Fesselin is a proline-rich actin binding protein that has recently been isolated from smooth muscle [Leinweber, B. D., Fredricksen, R. S., Hoffman, D. R., and Chalovich, J. M. (1999) J. Muscle Res. Cell Motil. 20, 539–545]. ... -
A germline-specific isoform of eIF4E (IFE-1) is required for efficient translation of stored mRNAs and maturation of both oocytes and sperm
(East Carolina University, 2009-05-15)Fertility and embryonic viability are measures of efficient germ cell growth and development. During oogenesis and spermatogenesis, new proteins are required for both mitotic expansion and differentiation. Qualitative and ... -
HuR binds to a single site on the C/EBP - beta mRNA of 3T3-L1 Adipocytes
(East Carolina University, 2007-03-30)HuR is a ligand for nuclear mRNAs containing adenylate-uridylate rich elements in the 3'- untranslated region. Once bound to the mRNA, HuR is recognized by adapter proteins which then facilitate nuclear export of the ...