The C5b component is extremely labile, is not covalently bound to the membrane like C3b and C4b, and is rapidly inactivated unless it is stabilized by the binding of C6.

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#Unit 6. System Physiology – Plant

Two types of symporters (NRT1 and NRT2) and one antiporter (CLC) are involved in nitrate transport in plants.

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#Unit 6. System Physiology – Plant

TLS Online TPP Program

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#Unit 6. System Physiology – Plant

Ammonium assimilation in roots

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#Unit 6. System Physiology – Plant

Nitrate reductase

Homodimers, two identical subunits

Each subunit with 100kD

Each subunit contains 3 prosthetic groups:

FAD, heme, and molybdenum complexed to pterin (an organic molecule). 

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#Unit 6. System Physiology – Plant

The nitrate reductase dimer- Three binding domains

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#Unit 6. System Physiology – Plant