Dictionary » C » Carrier protein

Carrier protein

Definition

noun, plural: carrier proteins

A protein that transports specific substance through intracellular compartments, into the extracellular fluid, or across the cell membrane.


Supplement

Carrier proteins are involved in facilitated diffusion and active transport of substances out of or into the cell (e.g. diffusion of sugars, amino acids and nucleosides, uptake of glucose, transportation of salts, glucose, amino acids, etc.). For instance, carrier proteins such as the integral transmembrane proteins embedded in the cell membrane would have a high affinity for specific substances on the cell exterior and would next undergo a conformational change to facilitate the passage of these substances to the cell interior across the membrane barriers.


Related terms: acyl carrier protein, lactose carrier protein.

See also: facilitated diffusion, protein.


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translation from DNA

... can be thousands copies of each mRNA, each giving rise to hundreds of protein molecules), also, during replication of DNA the protein synthesis ... from the RNA (as nowadays) but when DNA started to work as information carrier, there would have to be too big changes in the ribosome and everything ...

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by JackBean
Tue Sep 30, 2014 8:16 am
 
Forum: Molecular Biology
Topic: translation from DNA
Replies: 2
Views: 1852

Re:

... technology in that huge technological database - genes on DNA carrier through RNA input-output device is implemented in a polypeptide (protein) interface. Later, at the same time or in the process system appeared and user-developer ...

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by RabbitPhilosopher
Wed Sep 04, 2013 7:27 pm
 
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 48384

Evolution or De-evolution?

... technology in that huge technological database - genes on DNA carrier through RNA input-output device is implemented in a polypeptide (protein) interface. Later, at the same time or in the process system appeared and user-developer ...

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by LeoPol
Wed Aug 14, 2013 11:42 am
 
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 48384

Re: How can a protein without a G-site bind to GSH?

... i only got 1 band and the score for that 3% sequence is 100% of an acyl carrier protein lpxA-like motive. my suspicion is this animal utilises an analog of GSH. Thank you ...

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by hurzz
Thu Nov 22, 2012 11:19 am
 
Forum: Molecular Biology
Topic: How can a protein without a G-site bind to GSH?
Replies: 11
Views: 4006

How can a protein without a G-site bind to GSH?

... this. I used GSH-Sepharose 4B beads on a cell lysate and got a single protein band on SDS-PAGE. I sent it for MALDI-TOF, the sequence came back with 3% coverage that has homolog with acetyl carrier protein. question: 1. how can my protein bind to GSH without having a G-site? ...

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by hurzz
Mon Nov 12, 2012 12:34 pm
 
Forum: Molecular Biology
Topic: How can a protein without a G-site bind to GSH?
Replies: 11
Views: 4006
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