tetramer

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tetramer

(te′tră-mĕr) [ tetra- + -mer]
A structure such as a molecule or a polymer made of four structural subunits.
tetrameric (te″tră-mer′ik), adjectivetetramerous (tĕ-tram′ĕ-rŭs)
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References in periodicals archive ?
Recruitment of RXR by homotetrameric RARalpha fusion proteins is essential for transformation.
Cysteine biosynthesis is catalyzed by a bifunctional complex composed of two molecules of homodimeric O-acetylserine sulfhydrase and one molecule of homotetrameric serine acetyl-transferase (Droux et al., 1998).
CAT, which catalyzes the conversion of [H.sub.2][O.sub.2] into water and oxygen, is a homotetrameric protein containing four iron heme and largely located in the peroxisomes.
1C), indicating the oligomeric nature of insect PRIP subfamily members and suggesting the presence of a homotetrameric AQP-Bom3 in vitellogenic and choriogenic ovaries.
In regard to membrane trafficking of AMPA receptors, the induction mechanism for LTP in hippocampal CA1 pyramidal neurons [64] includes increased incorporation of GluA1/GluA2-containing AMPA receptors into the synaptic surface membrane [62, 109]; however, subsequent work suggests that the newly incorporated AMPA receptors are in fact homotetrameric GluA1 complexes [110].
RyRs assemble as very large homotetrameric structures with a molecular weight > 2 MDa and consist of a very large cytoplasmic assembly (the foot region) and a relatively small transmembrane assembly composed of six putative transmembrane passes with a central ion-conducting pore.