dimer

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dimer

 
1. a compound formed by combination of two identical simpler molecules.
2. a capsomer having two structural subunits.
D-dimer a fragment of fibrin that is formed as a result of fibrin degradation. A positive test for its presence in the blood is suggestive of conditions such as thrombotic disease, sickle cell crisis, malignancy, disseminated intravascular coagulation, or recent surgery.

di·mer

(dī'mĕr),
A compound or unit produced by the combination of two like molecules; in the strictest sense, this occurs without the loss of atoms (thus, nitrogen tetroxide, N2O4, is the dimer of nitrogen dioxide, NO2), but usually by elimination of H2O or a similar small molecule between the two (for example, a disaccharide), or by simple noncovalent association (as of two identical protein molecules); higher orders of complexity are called trimers, tetramers, oligomers, and polymers.
[G. di-, two, + -mer]

dimer

/di·mer/ (di´mer)
1. a compound formed by combination of two identical molecules.
2. a capsomer having two structural subunits.

dimer

[dī′mər]
Etymology: Gk, di, twice, meros, parts
a compound formed by the union of two radicals or two molecules of a single simpler compound.

di·mer

(dī'mĕr)
A compound or unit produced by the combination of two like molecules; in the strictest sense, without loss of atoms (thus nitrogen tetroxide, N2O4, is the dimer of nitrogen dioxide, NO2), but usually by elimination of H2O or a similar small molecule between the two (e.g., a disaccharide), or by simple noncovalent association (as of two identical protein molecules); higher orders of complexity are called trimers, tetramers, oligomers, and polymers.
[G. di-, two, + -mer]

dimer

a molecule made by the joining of two molecules of the same kind, i.e. two MONOMERS. Ultraviolet light can induce THYMINE DIMERS in DNA.

dimer

chemical compound formed by the union of two identical molecules.
References in periodicals archive ?
The hydrosilane is also able to dimerize when no catalyst is present or to polymerize through a radical mechanism to high molecular weight (branched) polysiloxane when catalyst is added.
Members of the Jun and Fos families of proteins dimerize to preferentially bind AP-1 sites with high affinity; hence, each dimer combination makes up an AP-1 protein.
After combining with 1,25(OH)[sub]2D[sub]3, the nuclear-bound Vitamin D receptor dimerizes with the retinoid X receptor, forming a joint complex.
FOS dimerizes with JUN to form AP-1, which regulates a class of genes involved in cell survival and death.
A split Cre recombinase protein, which dimerizes and is activated by blue light, will be used to genetically label cells (and their progeny) in a topologically defined manner ( compartment reporter ).
Thus, CTR dimerizes with either of the RAMPs 1-3 to form receptors referred to as AMY1, AMY2 and AMY3.
Upon ligand binding, Kit dimerizes, leading to autophosphorylation and downstream activation of the MAPK, PI3K-Akt, and JAK-STAT (janus kinase-signal transducer and activator of transcription) pathways.
The zwitterion (2) generally dimerizes to form 6 or polymerizes when 3 is a ketone, less susceptible to nucleophilic attack [11].
HIF-1[alpha] translocates to the nucleus, dimerizes with HIF-1[beta], and binds to hypoxia response elements, which contain the erythropoietin (EPO) gene enhancer [16, 17].
Then HIF-1[beta] rapidly accumulates, dimerizes with HIF-1[beta], translocates into the nucleus and activates the transcription of genes that control angiogenesis, glucose metabolism, cell proliferation and survival, metastasis and drug resistance [98].
NOS is a heme protein that exists in its inactive form as a monomer, but dimerizes before action.