Skin is a very complex organ and hence designing a bioengineered skin model replicating the essential physiological characteristics for replacing the diseased or damaged parts has been a challenging goal for many.
Cardiomyocytes (the contractile cells of the heart) are terminally differentiated cells (36); therefore, quality-control mechanisms for replacing damaged proteins are essential for their health and survival (37).
Military analysts said it might be essential for President Bush, who has repeatedly called for replacing cold-war weapons with "skip-a-generation" systems, to support Mr. Rumsfeld's effort if it is to succeed.
One would consider flooring as essential as sinks, commodes, stoves or refrigerators. A. Generally tenants are not responsible for replacing kitchen floors.
The sequence of the LUC7L gene and thus the aberrant RNA product was also not essential for HBA2 silencing, as replacing the LUC7L gene body with another protein-coding gene did not remove the repressive effect.
GST, GST-Rho-kinase-cat (6 553 amino acids), GST-Rho-kinase-cat-KD (Lys121, which is essential for ATP-binding, is replaced by Gly), and GST-PKN-cat (581 942 amino acids) were produced in Sf9 cells with a baculovirus system and purified on a glutathione-sepharose column [17].
In this mutant protein, an invariant lysine residue in subdomain II that is conserved in all kinases and that is essential for kinase activity was replaced by glutamate [ 34].
To determine which, if any, of the hGSK3β sites on Tau that we confirmed as phosphorylated in vivo are essential for increased toxicity, we replaced the individual residues, Ser202, Ser205, Thr212 or Ser404 in 2N4R Tau with non-phosphorylatable alanine.
The amino acid sequence predicts a 8 topology common to Class III Chitinases (glycoside hydrolase family 18 proteins; GH18), and shares similarity with other GH18 members, although it lacks the glutamic acid residue essential for catalysis, which is replaced by glutamine.
Synthetic solar-derived hydrocarbon commodities, such as methane, methanol, and ethanol, are essential for satisfying the need to replace fossil fuels in transportation, heating, and energy storage and as a source of feedstocks for the chemicals, pharmaceutical, and fertilizer industries.
