A transport protein is a protein involved in facilitated diffusion. Changes in the conformation move the binding site to the opposite side of the protein.
s are also used in active transport. The proteins bind to the larger molecule needed within the cell and guide it into the cell, moving particles against the concentration gradient.
See also ...
Transport proteins span the membrane and enable the movement of particles across the membrane. Transport proteins are specific. For example, transport proteins that move Na+ across the cell membrane will not move Ca++.
See carrier protein.
Online Biology Dictionary (TRANSPOS-)
transposase An enzyme capable of catalyzing the insertion of a transposon.
(28) Transport proteins (see also transport protein)
(a) Substances (e.g., sugars) that are not permeable through lipid bilayers may still cross via membrane-spanning transport proteins
s embedded in the membrane can speed movement across the membrane.
Some s bind selectively to a solute on one side of the membrane and release it on the opposite side.
A transport protein can move various ions and molecules, they are distinguished according to their directionality: ...
A in the plasma membranes of a plant or animal cell that specifically facilitates the diffusion of water across the membrane (osmosis).
A solution in which water is the solvent.
The transport proteins integrated into the cell membrane are often highly selective about the chemicals they allow to cross.
channels s that act as gates to control the movement of sodium and potassium ions across the plasma membrane of a nerve cell.
transportase --> transport protein
(Science: protein) A class of transmembrane protein that allows substances to cross plasma membranes far faster than would be possible by diffusion alone.
Glucose binds to
Transporter changers conformation and glucose is released into cell
Intracellular glucose is immediately phosphorylated ...
UNC-76 is required for axonal outgrowth and fasciculation in worms and its homolog in Drosophila is an axonal transport protein [14,15].
The outer layer of the double membrane is much more permeable than the inner layer, which features a number of embedded membrane s.
Drinking the solution stimulates Na+ and glucose uptake by co-transport proteins
H2O is absorbed from small intestine ...
After sorting, the membrane of the golgi buds off, forming secretory vesicles that s to their specific destination in the cell. A protein's destination is often signaled with a specific amino acid sequence at its end.
carrier proteins - membrane transport protein that binds to a solute and transports it across the membrane by undergoing a series of conformational changes ...
Real biological membranes are semi-permeable; they can be used both to store and access energy. The movement of different molecules across them differ based on which s are present and active.
active transport A process that requires an expenditure of ATP energy to move molecules across a cell membrane; usually moved against the concentration gradient with the aid of specific transport proteins.
that describes the affinity of an enzyme for its substrate and equals the substrate concentration that yields the half-maximal reaction rate; also called the Michaelis constant. A similar parameter describes the affinity of a for ...
We used to think that it was a regulated process of how nucleic acids such as mRNAs moved out of the cell nucleus, and recently we've become more aware that there also is a regulated process by which cells transport proteins and nucleic acids into ...
See also: Protein, Trans, Cell, Membrane, Proteins