Plasmalogens are ether glycerophospholipids in which the alkyl moiety is cis-a, b-unsaturated

      

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#Unit 1. Molecules and their Interaction Relevant to Biology

Lys & Arg have ionisation series

1------pK1-----pK2--------pKr------14

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#Unit 1. Molecules and their Interaction Relevant to Biology

His ionisation series

1------pK1-----pKr--------pKr------14

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Glycine at pH 2.34, where there is an equal mixture of

  the average or net positive charge is 0.5 or +1/2

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#Unit 1. Molecules and their Interaction Relevant to Biology

There are two type representation of amino acid structure

1. By Fischer’s convention L and D

2. By absolute configuration RS System

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A system to unambiguously describe the configurations of molecules with more than one asymmetric center was devised in 1956 by Robert Cahn, Christopher Ingold, and Vladimir Prelog. In the Cahn–Ingold– Prelog or RS system