carrier protein

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carrier protein

a multiunit transmembrane protein that possesses specific binding sites of a particular molecule and transports that substance across the cell membrane. It does so by reversibly altering its conformation after binding occurs and after resuming its original molecular conformation after transporting and releasing the substance on the other side of the membrane.
See also: uniport, symport, antiport.

binding protein

A generic term for a protein that reversibly binds to various small molecules, including amino acids, sugars, inorganic ions, vitamins and other molecules.

carrier protein

1. A protein that elicits an immune response when coupled with a hapten.
2. A membrane protein for facilitated diffusion of a specific substance into a cell.
See also: protein

carrier protein

membrane proteins that have a high affinity for particular solutes, e.g. glucose, and which facilitate the passage of these solutes through membrane barriers. See also carrier-mediated transport.
References in periodicals archive ?
A diverse array of protein degradation fragments appear to accumulate in plasma, bound to carrier proteins such as albumin (18-20).
In regards to future plans for the HGP-30 AIDS vaccine, Sarin said: "We plan to optimize conditions for linking HGP-30 to carrier proteins and to evaluate various adjuvants, so as to be able to obtain T-cell proliferative and CTL responses in all the immunized volunteers.
The selectivity of binding of low-molecular-weight constituents for different classes of carrier proteins was explored further (17,18), revealing that subsets of bound low-molecular-weight peptides and sequenced protein fragments associated with albumin were different from those bound to immunoglobulin, apolipoprotein, and transferrin (18).
Linking the antigens to immunogenic carrier proteins or making large, cross- linked peptide constructs can increase the immunogenicity of a synthetic antigen.
The ABIOMED system creates a bioactive structure using ultrapure biological carrier proteins and recombinant growth hormones to enhance healing and the strength of the closures.
0061551 : "Identification of a Mitochondrial Target of Thiazolidinedione Insulin Sensitizers (mTOT) - relationship to newly identified mitochondrial pyruvate carrier proteins.
Although CSPs share no sequence similarity with OBPs, these two groups of carrier proteins are characterized structurally by a hydrophilic surface and a hydrophobic core, respectively, to make them soluble in the sensillar lymph and to enable them to bind and carry olfactory ligands.
6) This is a significant number on its own, but the situation may be even worse when accounting for the fact that the majority of the hormone is bound to carrier proteins including sex hormone binding globulin (SHBG) and albumin and, as such, may not be available for tissues to use.
Carrier proteins for transferrin are often found in large amounts in cancers.
2), (3) Heparin is said to inhibit acid phosphatase activity (4) and to affect the binding of triiodothyronine and thyroxine to their carrier proteins, thus producing falsely higher concentrations of these hormones.
The movement of electrons by carrier proteins, photolytic release of oxygen, hydrogen ions, and electrons are clear and easy for the instructor to show in photosynthesis.
Blood sampling cannot distinguish between free hormones and the ones delivered via carrier proteins.