aldehydo-D-ribose 5-phosphate

1. D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate = aldehydo-D-ribose 5-phosphate + D-xylulose 5-phosphate

Catalysed by TKT, TKTL1, TKTL2

1. aldehydo-D-ribose 5-phosphate = D-ribulose 5-phosphate

Catalysed by RPIA

1. D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate = aldehydo-D-ribose 5-phosphate + D-xylulose 5-phosphate

Catalysed by TKT, TKTL1, TKTL2

1. aldehydo-D-ribose 5-phosphate = D-ribulose 5-phosphate
2. D-ribulose 5-phosphate + CTP + H(+) = CDP-D-ribulose + diphosphate

Catalysed by RPIA, CRPPA

1. D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate = aldehydo-D-ribose 5-phosphate + D-xylulose 5-phosphate
2. sedoheptulose-7-phosphate:D-glyceraldehyde-3-phosphate glyceronetransferase

Catalysed by TKT, TKTL1, TKTL2, TALDO1cytosol

1. D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate = aldehydo-D-ribose 5-phosphate + D-xylulose 5-phosphate
2. D-glyceraldehyde + ATP = D-glyceraldehyde 3-phosphate + ADP + H(+)
3. beta-D-fructose 1-phosphate = D-glyceraldehyde + dihydroxyacetone phosphate

Catalysed by TKT, TKTL1, TKTL2, TKFC and 1 moreOne of 2 routes

1. D-sedoheptulose 7-phosphate + D-glyceraldehyde 3-phosphate = aldehydo-D-ribose 5-phosphate + D-xylulose 5-phosphate
2. 2-deoxy-D-ribose 5-phosphate = D-glyceraldehyde 3-phosphate + acetaldehyde
3. 2-deoxy-D-ribose 5-phosphate = D-glyceraldehyde 3-phosphate + acetaldehyde