what is the difference between porins and aquaporins? plz explain properly the difference in function too.
thank u
Porins | Aquaporins |
Any of a class of proteins whose molecules can form channels through cellular membranes. | Aquaporins are proteins embedded in the cell membrane that regulate the flow of water. |
These are known as beta barrel protein. | They are “the plumbing system for cells.” |
They act as a pore through which molecules can diffuse | Aquaporins are integral membrane proteins. |
They allow passive diffusion of small metabolites like sugars, ions, and amino acids. | Aquaporins selectively conduct water molecules in and out of the cell, while preventing the passage of ions and other solutes. |
They are present in the outer membrane of Gram-negative bacteria and some Gram-positive bacteria, mitochondria and the chloroplast. | They are present in cell membrane of plants and animals. |