Turnover in Biological Definition

Actin

... from the minus end and the increase in ADP-actin stimulates the exchange of bound ADP for ATP, leading to more ATP-actin units. This rapid turnover is important for the cells movement. The protein cofilin binds to ADP-actin units and promotes their dissociation from the minus end and prevents ...

Enzyme

... or Lineweaver-Burk plot. The efficiency of an enzyme can be expressed in terms of k cat / K m . The quantity k cat , also called the turnover number, incorporates the rate constants for all steps in the reaction, and is the product of V max and the total enzyme concentration. k cat / ...

Fungus

... This resistance is due to: Fatty acid content of the skin . pH of the skin, mucosal surfaces and body fluids Epithelial turnover Normal flora Transferrin Cilia of respiratory tract . When fungi do pass the resistance barriers of the human body and establish ...

Metabolism

... Flavin-containing monooxygenase system Alcohol metabolism Nitrogen metabolism Nitrogen metabolism includes the pathways for turnover and excretion of nitrogen in organisms as well as the biological processes of the biogeochemical nitrogen cycle : Urea cycle , important ...

Actin

... from the minus end and the increase in ADP-actin stimulates the exchange of bound ADP for ATP, leading to more ATP-actin units. This rapid turnover is important for the cells movement. The protein cofilin binds to ADP-actin units and promotes their dissociation from the minus end and prevents ...

Purine

... deficiency of another enzyme, adenosine deaminase , needed to break down adenine, is a cause of severe combined immunodeficiency . Purines from turnover of nucleic acids (or from food) can also be salvaged and reused in new nucleotides. The enzyme adenine phosphoribosyltransferase salvages adenine, ...