What is dimeric glycoprotein?

Platelet Glycoprotein VI Dimerization, an Active Process Inducing Receptor Competence, Is an Indicator of Platelet Reactivity | Arteriosclerosis, Thrombosis, and Vascular Biology.

What is the difference between a homodimer and an heterodimer?

A protein homodimer is formed by two identical proteins. A protein heterodimer is formed by two different proteins. Most protein dimers in biochemistry are not connected by covalent bonds.

How are dimers connected?

A dimer (/ˈdaɪmər/) (di-, “two” + -mer, “parts”) is an oligomer consisting of two monomers joined by bonds that can be either strong or weak, covalent or intermolecular. The term homodimer is used when the two molecules are identical (e.g. A–A) and heterodimer when they are not (e.g. A–B).

What do dimers do?

It happens throughout the cell. For example, dimers form in the cell membrane, where tyrosine-kinase receptors reside, and in the cytosol that contains microtubules composed of tubulin. In the nucleus, hormone receptors, acting as transcription factors, form dimers to increase stability and improve binding to DNA.

What is the name for a protein dimer?

tubulin
A protein dimer called ‘tubulin’ (molecular weight 110000) composed of two monomeric subunits called ‘alpha and beta tubulin’ (molecular weight 55000 each), differing from each other in only a few amino acid residues, comprises the basic structural unit of microtubules.

What causes dimerization?

Carboxylic acids form dimers by hydrogen bonding of the acidic hydrogen and the carbonyl oxygen when anhydrous. For example, acetic acid forms a dimer in the gas phase, where the monomer units are held together by hydrogen bonds. Under special conditions, most OH-containing molecules form dimers, e.g. the water dimer.

Why do most carboxylic acid exist as dimmer?

Carboxylic acids exist as dimer because the carboxylic acid has oxygen atom and hydrogen atom. The oxygen ion has a lone pair of electron. Explanation: On the other hydrogen has a free accepting orbits for electrons.