Vitamin K–dependent plasma protein that inhibits blood clotting by serving as a cofactor for activated protein C. Not to be confused with S p. A protein is a chain molecule made up of amino acids made by living things.
Protein synthesis primarily occurs during the translation phase of protein production. This is where messenger RNA (mRNA) is decoded by ribosomes to produce specific amino acid sequences based on the genetic code.
Protein production is higher in interphase, particularly during the synthesis (S) phase. During mitosis, cell division takes precedence over protein synthesis, so protein production is typically lower.
Proteins C and S are two regulatory proteins in the body that play a role in controlling blood clotting. Protein C helps to inhibit blood clot formation, while protein S enhances the anticoagulant effects of protein C. Deficiencies in these proteins can lead to a heightened risk of abnormal blood clot formation.
The most common 'S' algae used in single protein supplements is Spirulina. This blue-green algae is renowned for its high protein content, containing all essential amino acids, and is also rich in vitamins, minerals, and antioxidants. Spirulina is often marketed for its potential health benefits, including boosting energy and supporting immune function. Its cultivation is sustainable, making it a popular choice for plant-based protein sources.
Reducing agents are used to reduce disulphide bonds (-S-S) present within (intrarmolecular) and between (intermolecular) the molecules. S-S bond is formed between two cysteine amino acid (one of the slphur containing amino acids, the other methionine can not form).Reducing agents such as DTT, 2-mercaptoethanol are thus used in extraction buffer to kill the native protein structure.
Protein S deficiency is associated with increased risk for venous thrombosis. This is a clotting disorder involving Vitamin K.
Protein S is a vitamin K-dependent plasma glycoprotein synthesized in the endothelium. In the circulation, Protein S exists in two forms: a free form and a complex form bound to complement protein C4b. In humans, protein S is encoded by the PROS1 gene.
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Pandjassarame Kangueane has written: 'Protein-protein interactions' -- subject(s): Intracellular Signaling Peptides and Proteins, Protein Binding, Protein-protein interactions, Protein Interaction Mapping, Physiology
There are a few, such as, Protein S Deficiency, which is hereditary; also, Marasmic Kwashiorkor, Protein Energy Deficiency, Wrong protein unfolding, to name a few.
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Retinoblastoma protein regulates the progression past the restriction point between G1 and S phases. It is regulated by phosphorylation.
Leendert Bosch has written: 'The mechanism of protein synthesis and its regulation' -- subject(s): Protein biosynthesis
Thomas A. Steitz has written: 'Structural studies of protein-nucleic acid interaction' -- subject(s): DNA-protein interactions, RNA-protein interactions
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