Purine nucleosides can be synthesize in two ways, de novo biosynthesis and salvaging pathways. In salvaging pathways nucleosides from RNA and DNA breakdown can reenter purine nucleoside de novo biosynthesis. Website=www.biocyc.org/Ecoli/Pathways/ free text=Voet and Voet (textbook) Biochemistry 4.0 inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive inactive Long Name: guanine Synonym: Synonym not specified Accession: S04347 inside SIMPLE_MOLECULE guanine Long Name: guanosine Synonym: Synonym not specified Accession: S04349 inside SIMPLE_MOLECULE guanosine Long Name: GMP Synonym: Synonym not specified Accession: S04340 inside SIMPLE_MOLECULE GMP Long Name: ATP Synonym: Synonym not specified Accession: S04343 inside SIMPLE_MOLECULE ATP Long Name: ADP Synonym: Synonym not specified Accession: S04351 inside SIMPLE_MOLECULE ADP Long Name: PRPP Synonym: Synonym not specified Accession: S04341 inside SIMPLE_MOLECULE PRPP Long Name: PPi Synonym: Synonym not specified Accession: S04352 inside SIMPLE_MOLECULE PP_sub_i Long Name: deoxyguanosine Synonym: Synonym not specified Accession: S04339 inside SIMPLE_MOLECULE deoxyguanosine Long Name: deoxyribose-1-phosphate Synonym: Synonym not specified Accession: S04346 inside SIMPLE_MOLECULE deoxyribose-1-_br_phosphate Long Name: PO4 Synonym: Synonym not specified Accession: S04348 inside SIMPLE_MOLECULE PO_sub_4 Long Name: xanthine Synonym: Synonym not specified Accession: S04336 inside SIMPLE_MOLECULE xanthine Long Name: xanthosine Synonym: Synonym not specified Accession: S04345 inside SIMPLE_MOLECULE xanthosine Long Name: xanthosine-5-phosphate Synonym: Synonym not specified Accession: S04342 inside SIMPLE_MOLECULE xanthosine-5-_br_phosphate Long Name: H2O Synonym: Synonym not specified Accession: S04344 inside SIMPLE_MOLECULE H_sub_2_endsub_O Long Name: NH3 Synonym: Synonym not specified Accession: S04337 inside SIMPLE_MOLECULE NH_sub_3 Long Name: Xanthosine phosphorylase Synonym: Synonym not specified Accession: P03246 inside PROTEIN p1 Long Name: Xanthine phosphoribosyltransferase Synonym: Synonym not specified Accession: P03247 inside PROTEIN p2 Long Name: Guanine deaminase Synonym: Synonym not specified Accession: P03249 inside PROTEIN p3 Long Name: Deoxyguanosine phosphorylase Synonym: Synonym not specified Accession: P03248 inside PROTEIN p4 Long Name: Guanosine kinase Synonym: Synonym not specified Accession: P03251 inside PROTEIN p5 Long Name: Guanine phosphoribosyltransferase Synonym: Synonym not specified Accession: P03245 inside PROTEIN p6 Long Name: Guanosine phosphorylase Synonym: Synonym not specified Accession: P03250 inside PROTEIN p7 Long Name: ribose-1-phosphate Synonym: Synonym not specified Accession: S04338 inside SIMPLE_MOLECULE ribose-1-_br_phosphate STATE_TRANSITION 0.3333333333333335,0.0 0.6666666666666667,-8.881784197001252E-16 a1 a27 a2 a28 a26 STATE_TRANSITION 0.33333333333333326,-1.3322676295501878E-15 0.6666666666666667,-2.886579864025407E-15 a2 a4 a3 a5 a24 STATE_TRANSITION 0.33333333333333326,-2.7755575615628914E-17 0.666666666666667,8.326672684688674E-17 a1 a6 a3 a7 a25 STATE_TRANSITION 0.3333333333333335,2.220446049250313E-16 0.6666666666666667,6.661338147750939E-16 a1 a18 a11 a19 a22 STATE_TRANSITION 0.3333333333333335,0.0 0.666666666666667,-2.220446049250313E-16 a13 a14 a11 a15 a20 STATE_TRANSITION 0.33333333333333304,0.0 0.6666666666666665,0.0 a11 a16 a12 a17 a21 STATE_TRANSITION 0.3333333333333335,-2.220446049250313E-16 0.666666666666667,0.0 a1 a9 a8 a10 a23