Nutrient Transport - Exercise #3
You are studying nutrient uptake in E. coli and are curious about the MgtA transporter.
- What molecule(s) does this transporter transport into the cytosol and/or periplasmic space? Establish what category (Passive Diffusion, Facilitated Diffusion, Active Transport). Establish what class (Ion Driven - be specific, Group Translocation, ABC Transporter) of transporters it belongs to. What energy source, if any, drives the uptake process?
- What is the affinity of this transporter for its transported molecule(s)?
- Is the transcription of the transporter gene regulated? If so, what protein(s) regulate it?
- Is the transport activity of MgtA regulated by any protein(s) and/or molecule(s)? Explain.