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Racial difference in Acylation Stimulating Protein (ASP) correlates to triglyceride in non-obese and obese African American and Caucasian women
(East Carolina University, 2009-04-17)
Background: Acylation Stimulating Protein (ASP) has been shown to influence adipose tissue triglyceride (TG) storage. The aim was to examine ethnic differences in ASP and leptin levels in relation to lipid profiles and ...
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 ...
Troponin-tropomyosin: an allosteric switch or a steric blocker?
(East Carolina University, 2002-08)
The interaction of myosin subfragment 1 (S1) with actin-tropomyosin-troponin (regulated actin) is highly nucleotide dependent. The binding of S1 or S1-ADP (but not S1-ATP nor N,N - -phenylenedimaleimide-modified S1-ATP) ...
Inhibition of contraction and myosin light chain phosphorylation in guinea-pig smooth muscle by p21-activated kinase 1
(East Carolina University, 2003-06-01)
The p21-activated protein kinases (PAKs) have been implicated in cytoskeletal rearrangements and modulation of non-muscle contractility. Little, however, is known about the role of the PAK family members in smooth 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 ...
HuR involvement in mitotic clonal expansion during acquisition of the adipocyte phenotype
(East Carolina University, 2009-05-29)
In the nucleus HuR binds to mRNAs containing adenylate-uridylate rich elements in the 3?- untranslated region. HuR may influence expression of its ligand mRNA through regulation of polyadenylation, translocation of the ...
The RXR-alpha C-terminus T462 is a NMR sensor for coactivator peptide binding
(East Carolina University, 2008-02-22)
The C-terminal activation function-2 (AF-2) helix plays a crucial role in retinoid X receptor alpha (RXRα)-mediated gene expression. Here, we report a nuclear magnetic resonance (NMR) study of the RXRα ligand-binding domain ...
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 ...
Negative Charges at Protein Kinase C Sites of Troponin I Stabilize the Inactive State of Actin
(East Carolina University, 2008-01-15)
Alterations in the troponin complex can lead to increases or decreases in contractile activity. Most mutations of
troponin that cause hypertrophic cardiomyopathy increase the activity of cardiac muscle fibers. In at least ...
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 ...