11. The systematic name of this enzyme class is "'hydroxypyruvate aldose-ketose -isomerase " '. 12. The resulting molecule has an hemiacetal or hemiketal group, depending on whether the linear form was an aldose or a ketose . 13. The systematic name of this enzyme class is "'11-deoxycorticosterone aldose-ketose -isomerase " '. 14. The systematic name of this enzyme class is "'D-glucuronate aldose-ketose -isomerase " '. 15. This isomerization of a ketose to an aldose proceeds through an " cis "-enediol ( ate ) intermediate. 16. An aldose differs from a ketose in that it has a carbonyl group at the end of the carbon chain instead of in the middle. 17. At equilibrium the aldose and ketose form a mixture which in the case of the glyceraldehyde and dihydroxyacetone is also called "'glycerose " '. 18. A reducing end of a carbohydrate is a carbon atom that can be in equilibrium with the open-chain aldehyde ( aldose ) or keto form ( ketose ). 19. Aldolase can also produce DHAP from other ( 3S, 4R )-ketose 1-phosphates such as fructose 1-phosphate and sedoheptulose 1, 7-bisphosphate. 20. If the carbonyl is at the very beginning of the chain ( carbon 1 ), the monosaccharide is said to be an aldose, otherwise it is a ketose .
