title: 5'-Methylthioadenosine is the major source of adenine in human cells.
mesh_terms: D000225:Adenine / Q000096:biosynthesis*; D000228:Adenine Phosphoribosyltransferase / Q000172:deficiency; D000241:Adenosine / Q000031:analogs & derivatives* / Q000378:metabolism; D002460:Cell Line; D002478:Cells, Cultured; D003839:Deoxyadenosines; D006801:Humans; D007945:Leukemia, Lymphoid; D011683:Purine-Nucleoside Phosphorylase / Q000378:metabolism; D013872:Thionucleosides / Q000378:metabolism*
chemical_list: D003839:Deoxyadenosines; D013872:Thionucleosides; C008500:5'-methylthioadenosine; D011683:Purine-Nucleoside Phosphorylase; C021784:5'-methylthioadenosine phosphorylase; D000228:Adenine Phosphoribosyltransferase; D000225:Adenine; D000241:Adenosine