ATP na nufin Adenosine Triphosphate. Kwayoyin halitta ne da ke aiki a matsayin tushen makamashi na farko ga sel a cikin halittu masu rai. Ana samar da ATP yayin numfashi na salula kuma yana ba da makamashi don matakai daban-daban na salon salula, ciki har da metabolism, raguwar tsoka, da haɗin furotin. Tsarin sinadarai na ATP ya ƙunshi nucleotide (adenin), ƙwayar sukari (ribose), da ƙungiyoyin phosphate guda uku. Lokacin da haɗin gwiwa tsakanin rukuni na biyu da na uku na phosphate ya lalace, makamashi yana fitowa, kuma ATP yana canza zuwa ADP (Adenosine Diphosphate).