A cardiotonic steroid secreted by the toad Bufo rubescens and other related species such as Bufo marinus. An endogenous Na/K-ATPase inhibitor, it is a vasoconstrictor with effects similar to digitalis.
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This entity has been manually annotated by the ChEBI Team.
An EC 3.6.3.* (acid anhydride hydrolase catalysing transmembrane movement of substances) inhibitor that interferes with the action of Na+/K+-transporting ATPase (EC 3.6.3.9).
The biological role played by a material entity when bound by a receptor of the adaptive immune system. Specific site on an antigen to which an antibody binds.
Originally referring to an endogenous compound that is formed in specialized organ or group of cells and carried to another organ or group of cells, in the same organism, upon which it has a specific regulatory function, the term is now commonly used to include non-endogenous, semi-synthetic and fully synthetic analogues of such compounds.