<P> Compound C00118 at KEGG Pathway Database . Enzyme 1.2. 1.12 at KEGG Pathway Database . Compound C00236 at KEGG Pathway Database . Enzyme 2.7. 2.3 at KEGG Pathway Database . Compound C00197 at KEGG Pathway Database . </P> <P> As previously mentioned 1, 3BPG is a metabolic intermediate in the glycolytic pathway . It is created by the exergonic oxidation of the aldehyde in G3P . The result of this oxidation is the conversion of the aldehyde group into a carboxylic acid group which drives the formation of an acyl phosphate bond . This is incidentally the only step in the glycolytic pathway in which NAD is converted into NADH . The formation reaction of 1, 3BPG requires the presence of an enzyme called glyceraldehyde - 3 - phosphate dehydrogenase . </P> <P> The high - energy acyl phosphate bond of 1, 3BPG is important in respiration as it assists in the formation of ATP . The molecule of ATP created during the following reaction is the first molecule produced during respiration . The reaction occurs as follows; </P> <Dl> <Dd> 1, 3 - bisphosphoglycerate + ADP ⇌ 3 - phosphoglycerate + ATP </Dd> </Dl>

Where does the phosphate supplied to 1 3 bisphosphate come from