Mechanism of photorespiration....???

Dear student, Photorespiration is a process in which oxidation of ribulose‐1,5‐bisphosphate takes place with the help of enzyme Rubisco, producing a 3‐carbon compound, 3‐phosphoglycerate, and a 2‐carbon compound, phosphoglycolate. It is considered as a wasteful process because about 25 % of the CO2 fixed during photosynthesis is lost during the process moreover there is no formation of ATP & NADH. Thanks and regards