Carrier proteins help pleaseWatch
In this picture, does the carrier protein remain in the shape on the right until a molecule from the inside binds to it and passes through it causing it to change shape ? Or does the shape of the protein at the end return to its original shape the second the molecule it transported is released ?
From the 3 different chronological diagrams in the screenshot, it looks like when the insoluble molecule from outside of the cell (in the extracellular fluid) binds to the carrier protein it changes shape closing to the outside while opening to the inside, at the last stage when it is only open to the inside of the cell (cytoplasmic side), the insoluble molecule is released and diffuses away into the cytoplasm.
I understand all of this but what happens after ? Does the carrier protein remain in that shape until an insoluble molecule from the inside binds to it ? Or does it return to its original shape as soon as the 1st molecule is released ?