BotanyDuring photorespiration or C2 pathway, the intermediate which is subjected to oxidation, decarboxylation and deamination is

During photorespiration or $C_{2}$ pathway, the intermediate which is subjected to oxidation, decarboxylation and deamination is

A
Serine
B
Glycolic acid
C
Glycine
D
Glyoxylic acid.

Solution:

During photorespiration, the amino acid glycine (2 molecules) by the catalytic activity of glycine decarboxylase (a multienzyme complex) is decarboxylated, deaminated ( ${NH}_{4}^{+}$ ) and oxidized (removal of H atoms and formation of NADH) to a molecule of amino acid serine.