Transport Mechanisms and Maltose Transporter

These flashcards cover key vocabulary related to transport mechanisms, particularly focusing on the Maltose Transporter and its assays.

Passive Transport

A process that moves molecules across a membrane without the use of ATP, along the concentration gradient.

Active Transport

A process that moves molecules across a membrane using ATP, against the concentration gradient.

Uniporter

A type of carrier protein that transports one molecule at a time.

Symporter

A type of carrier protein that transports two molecules in the same direction across a membrane.

Antiporter

A type of carrier protein that transports two molecules in opposite directions across a membrane.

Maltose Transporter

A carrier protein that facilitates the transport of maltose into yeast cells, utilizing a proton gradient.

H+ ATPase

An enzyme that pumps hydrogen ions (H+) out of the cell, creating a chemical gradient.

Chemical Gradient

A difference in concentration of ions across a membrane, which can be used to drive the transport of other molecules.

Inhibitor

A substance that decreases the activity of a transporter or enzyme, such as the competitive inhibitor pNPxG for the Maltose Transporter.

Analog

A molecule that has a structure similar to another molecule, which can affect transport mechanisms.