L31 462a_carb1_lec31_2012

Lisdeterminedbythe chiralcfurthestfromthe carbonylc

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 •  Molecular
 recogniDon
 •  Cell‐cell
 communicaDon
 ClassificaDon
by
number
of
sugar
units
 •  Monosaccharides:
 –  Single
sugar
unit
 •  Disaccharides
 –  2
sugar
units
 •  Oligosaccharides
 –  3‐
~20
sugar
units
 –  Oaen
associated
with
proteins
 (glycoproteins)
or
lipids
(glycolipids)

 •  Polysaccharides
 –  More
than
~20
units
 –  Starch,
cellulose,
glycogen
 •  ConnecDon
of
sugar
units
involves
“bridging”
 of
oxygen
atoms
via
glycosidic bonds Monosaccharide
 •  Linear
chain
of
C
atoms
 •  Aldehyde
or
Ketone
derivaDves
 –  aldehyde

Aldose
 –  ketone

Ketose
 •  1
C
is
in
carbonyl
(=O)
 •  other
Cs
have
hydroxyl
(–OH)
 •  Classified
based
on:
 –  Number
of
Carbons
 –  LocaDon
of
C=O
 –  Stereochemistry
 •  H2O
soluble
 Al...
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This note was uploaded on 01/22/2014 for the course BIOC 462A taught by Professor Ziegler,baldwin during the Winter '08 term at University of Arizona- Tucson.

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