Polar amino acids: Difference between revisions
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''' Polar amino acids'''<br>There are twenty amino acids, five of which are polar but uncharged. Two of which contain a hydroxyl group (-OH) attached to aliphatic side chain that is ''serine ''and ''threonine''. As for the ''aspargaine ''and glutamine they contain a terminal carboxamide in place of carboxylic acid. The fifth polar amino acid is ''cysteine'' that is structurally similar to serine but contain a sulfhydryl, or thiol (-SH), instead of the hydroxyl (-OH) group | ''' Polar amino acids'''<br>There are twenty amino acids, five of which are polar but uncharged. Two of which contain a hydroxyl group (-OH) attached to aliphatic side chain that is ''serine ''and ''threonine''. As for the ''aspargaine ''and glutamine they contain a terminal carboxamide in place of carboxylic acid. The fifth polar amino acid is ''cysteine'' that is structurally similar to serine but contain a sulfhydryl, or thiol (-SH), instead of the hydroxyl (-OH) group<ref>Berg J., Tymoczko J and Stryer L, (2007) Biochemisty, 6th edition, New York: WH freeman.</ref><references />. | ||
'''Polar amino acids''' | '''Polar amino acids''' | ||
Revision as of 19:17, 27 November 2010
Polar amino acids
There are twenty amino acids, five of which are polar but uncharged. Two of which contain a hydroxyl group (-OH) attached to aliphatic side chain that is serine and threonine. As for the aspargaine and glutamine they contain a terminal carboxamide in place of carboxylic acid. The fifth polar amino acid is cysteine that is structurally similar to serine but contain a sulfhydryl, or thiol (-SH), instead of the hydroxyl (-OH) group[1]
- ↑ Berg J., Tymoczko J and Stryer L, (2007) Biochemisty, 6th edition, New York: WH freeman.
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Polar amino acids
| Serine | Ser | S |
| Cysteine | Cys | C |
| Threonine | Thr | T |
| Glutamine | Gln | Q |
| Asparagine | Asn | N |