Passive transporter
Passive transporter, is a protein intergral within the membrane that allows ions or molecules to pass through the membrane without using energy/ATP. The molecule or ion will move down it's concentration gradient by facillitated diffusion. Each transporter is usually only specific to one molecule or a group of molecules with similar structures[1].
References
- ↑ B.Alberts et al (2008) Molecular Biology of the Cell, 5th Edition, NewYork:Garland Science, Taylor & Francis Group, Chapter 11, Page 652