The permeases are membrane transport proteins, a class of multipass transmembrane proteins that facilitate the diffusion of a specific molecule in or out of the cell by passive transport. In contrast, active transporters couple molecule transmembrane transport with an energy source such as ATP or a favorable ion gradient. It was originally discove...
Found on
http://en.wikipedia.org/wiki/Permease
(from the article `angiosperm`) ...can enter a protoplast by their cytoplasmic connections between neighbouring cells (plasmodesmata) or by active transport mechanisms requiring ... Like the cell membrane, membranes of some organelles contain transport proteins, or permeases, that allow chemical communication between organelles. ... ...
Found on
http://www.britannica.com/eb/a-z/p/46
<enzyme> General term for a membrane protein that increases the permeability of the plasma membrane to a particular molecule, by a process not requiring metabolic energy. ... See: facilitated diffusion. ... (18 Nov 1997) ...
Found on
http://www.encyclo.co.uk/local/20973
General term for a membrane protein that increases the permeability of the plasma membrane to a particular molecule, by a process not requiring metabolic energy. See facilitated diffusion.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Type: Term Pronunciation: per′mē-ās Definitions: 1. Any of a group of membrane-bound carriers (enzymes) that effect the transport of solute through a semipermeable membrane; this term is not typically used to describe eukaryotes.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=67376
No exact match found.
