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4.2.3 Optical activity
The tetrahedral orientation of four different groups about the ∝ carbon atom confers optical activity on amino acids. It is the ability to rotate the plane of plane-polarized light.
Except glycine, each amino acids has at least one asymmetric carbon atom and hecnce is optically active. Some amino acids found in proteins are dextrorotatory (+) and some levorotatory (-) at pH 7.0 |
Last modified: Tuesday, 24 January 2012, 11:05 AM