Definición y significado de Adenosinetriphosphatase

Adenosinetriphosphatase, Hydrogen, Potassium (n.)

1.(MeSH)An enzyme isolated from the gastric mucosa that catalyzes the hydrolysis of ATP coupled with the exchange of hydrogen and potassium ions across the cell wall. This enzyme was formerly listed as EC 3.6.1.36.

Adenosinetriphosphatase, Actomyosin (n.)

1.(MeSH)A diverse superfamily of proteins that function as translocating proteins. They share the common characteristics of being able to bind ACTINS and hydrolyse MgATP. Myosins generally consist of heavy chains which are involved in locomotion, and light chains which are involved in regulation. Within the structure of myosin heavy chain are three domains: the head, the neck and the tail. The head region of the heavy chain contains the actin binding domain and MgATPase domain which provides energy for locomotion. The neck region is involved in binding the light-chains. The tail region provides the anchoring point that maintains the position of the heavy chain. The superfamily of myosins is organized into structural classes based upon the type and arrangement of the subunits they contain.

Adenosinetriphosphatase, Sodium, Potassium (n.)

1.(MeSH)An enzyme that catalyzes the active transport system of sodium and potassium ions across the cell wall. Sodium and potassium ions are closely coupled with membrane ATPase which undergoes phosphorylation and dephosphorylation, thereby providing energy for transport of these ions against concentration gradients.

Adenosinetriphosphatase, Calcium (n.)

1.(MeSH)Cation-transporting proteins that utilize the energy of ATP hydrolysis for the transport of CALCIUM. They differ from CALCIUM CHANNELS which allow calcium to pass through a membrane without the use of energy.

Adenosinetriphosphatase (n.)

1.(MeSH)A group of enzymes which catalyze the hydrolysis of ATP. The hydrolysis reaction is usually coupled with another function such as transporting Ca(2+) across a membrane. These enzymes may be dependent on Ca(2+), Mg(2+), anions, H+, or DNA.