The hormones of the adrenal cortex are derivatives of cholesterol.

TLS Online TPP Program

#Id: 9010

#Unit 6. System Physiology – Plant

Only three molecules of CO2 are fixed per second per molecule of rubisco at 250C.

TLS Online TPP Program

#Id: 9011

#Unit 6. System Physiology – Plant

Rubisco-activase is regulated by light via the ferredoxin–thioredoxin system.

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#Id: 9012

#Unit 6. System Physiology – Plant

Ribulose 1,5-bisphosphate are sugar phosphates (SugP) inhibits carbamoylation by binding tightly to the active site and locking the enzyme in the “closed” confirmation.

TLS Online TPP Program

#Id: 9013

#Unit 6. System Physiology – Plant

Rubisco is inhibited by the natural inhibitor 2‐carboxyarabinitol 1‐phosphate (CA1P), that is a structural analog of the six-carbon intermediate of the carboxylation reaction. 

TLS Online TPP Program

#Id: 9014

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 9015

#Unit 6. System Physiology – Plant

CA1P and the other bound sugar phosphates are specifically removed by the ATP‐dependent enzyme, Rubisco activase, which prepares Rubisco for the catalytic cycle.