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  2. Bioenergetic systems - Wikipedia

    en.wikipedia.org/wiki/Bioenergetic_systems

    Since energy is released when ATP is broken down, energy is required to rebuild or resynthesize it. The building blocks of ATP synthesis are the by-products of its breakdown; adenosine diphosphate (ADP) and inorganic phosphate (P i). The energy for ATP resynthesis comes from three different series of chemical reactions that take place within ...

  3. Glycogen phosphorylase - Wikipedia

    en.wikipedia.org/wiki/Glycogen_phosphorylase

    The glycogen phosphorylase monomer is a large protein, composed of 842 amino acids with a mass of 97.434 kDa in muscle cells. While the enzyme can exist as an inactive monomer or tetramer, it is biologically active as a dimer of two identical subunits. [4]

  4. Protein metabolism - Wikipedia

    en.wikipedia.org/wiki/Protein_metabolism

    Protein anabolism is the process by which proteins are formed from amino acids. It relies on five processes: amino acid synthesis, transcription, translation, post translational modifications, and protein folding. Proteins are made from amino acids. In humans, some amino acids can be synthesized using already existing intermediates. These amino ...

  5. Gluconeogenesis - Wikipedia

    en.wikipedia.org/wiki/Gluconeogenesis

    Glucose-6-phosphate can be used in other metabolic pathways or dephosphorylated to free glucose. Whereas free glucose can easily diffuse in and out of the cell, the phosphorylated form (glucose-6-phosphate) is locked in the cell, a mechanism by which intracellular glucose levels are controlled by cells.

  6. Glycogenolysis - Wikipedia

    en.wikipedia.org/wiki/Glycogenolysis

    This exposes the α[1→6] branching point, which is hydrolysed by α[1→6] glucosidase, removing the final glucose residue of the branch as a molecule of glucose and eliminating the branch. This is the only case in which a glycogen metabolite is not glucose-1-phosphate. The glucose is subsequently phosphorylated to glucose-6-phosphate by ...

  7. Cortisol - Wikipedia

    en.wikipedia.org/wiki/Cortisol

    Cortisol plays a crucial role in regulating glucose metabolism and promotes gluconeogenesis (glucose synthesis) and glycogenesis (glycogen synthesis) in the liver and glycogenolysis (breakdown of glycogen) in skeletal muscle. [1] It also increases blood glucose levels by reducing glucose uptake in muscle and adipose tissue, decreasing protein ...

  8. Glycogen synthase - Wikipedia

    en.wikipedia.org/wiki/Glycogen_synthase

    Glycogen synthase (UDP-glucose-glycogen glucosyltransferase) is a key enzyme in glycogenesis, the conversion of glucose into glycogen. It is a glycosyltransferase ( EC 2.4.1.11 ) that catalyses the reaction of UDP-glucose and (1,4- α - D -glucosyl) n to yield UDP and (1,4- α - D -glucosyl) n+1 .

  9. Glucogenic amino acid - Wikipedia

    en.wikipedia.org/wiki/Glucogenic_amino_acid

    Alanine is a glucogenic amino acid that the liver's gluconeogenesis process can use to produce glucose. Muscle cells break down their protein when their blood glucose levels fall, which happens during fasting or periods of intense exercise. The breakdown process releases alanine, which is then transferred to the