Question

where do PGAand glycine gain entry respectively after being formed during the process of photorespirationin plants? what happens to them immediately after that?

Answer 1

RuBisCO functions as RuBP-oxygenase and aids in conversion of RuBP to PGA. This 2 PGA quickly get converted into glycolic acid. Till here the reaction occurs in chloroplast. This glycolic acid moves into peroxisomes and is oxidised to glyoxylic acid which is then converted into glycine. Glycine enters mitochondria and forms a molecule of serine and liberates CO₂.