Lecture 19: Carbohydrate structure Flashcards
in _____ isomers, the order of atoms changes
constitutional
constitutional isomers are _______
tautomers
_____ have the same connectivity but different spatial organizations
stereoisomers
_____ isomers have chiral carbons
configurational
______ are mirror images of all chiral centers
enantiomers
____ are not mirror images overall
diastereomers
_____ differ at anomeric C only
anomers
_____ differ at any other C than the anomeric C
epimers
_____ isomers have reversible rotation changes
conformational
What is the only L-monosaccharide made and used by mammals?
fucose
What happens if there is excess free fucose?
liver damage, cancer, diabetes, heart disease
describe fucose
galactose derivative
part of A/B/O blood antigens
What are the roles of polysaccharides?
glucose storage
structure
protein diversity