The prokaryotic transport system that involves a substrate-binding protein, a membrane-integrated transporter, and an ATP-hydrolyzing protein is
A) the ABC transport system.
B) group translocation.
C) symport.
D) simple transport.

Question

Quizplus · Accepted Answer

The prokaryotic transport system that involves a substrate-binding protein, a membrane-integrated transporter, and an ATP-hydrolyzing protein is the ABC transport system. The substrate-binding protein binds to the specific substrate, which undergoes a conformational change and delivers it to the transmembrane transporter, which is powered by ATP hydrolysis. This transport system is widespread in prokaryotes and is involved in the uptake of essential nutrients, such as sugars, amino acids, and ions.

The Prokaryotic Transport System That Involves a Substrate-Binding Protein, a Membrane-Integrated