Читать книгу Plant Nucleotide Metabolism - Hiroshi Ashihara - Страница 79

In plants purine bases are salvaged by phosphoribosyltransferases while purine nucleosides are salvaged by nucleoside kinases and NPT. Possible salvage routes of four purine bases, adenine, hypoxanthine, guanine, and xanthine, and six purine nucleosides, adenosine, inosine, guanosine, xanthosine, deoxyadenosine, and deoxyguanosine, are present in plants. Adenine and adenosine are the best substrates. The purine salvage mechanism in plants is different from what occurs in other organisms.