In the past few years, great progresses were made in this field, mainly due to the development of CD1 tetramers
loaded with lipid antigens.
Without any lipid modification, interactions of tetramers
form the orthogonal arrays but a lipid modified amino terminus hinders the array-forming interaction (Fig.
1 shows the tetramer
structure of the crystal Na2(C13H8N3O5)2(H2O)6.
Since our study suggested POL as a new member of the GNA-related lectin family, this result was not surprising considering the fact that most of the GNA-related lectins existed as dimmers, tetramers
, or even octamers containing subunits of around 11.
Kinetics of formation of hexamer from trimer and tetramer
from monomer and trimer Polyhedron, 15, 2875-2886.
This is because the residue involved, a64 (E 13), is on the surface of the hemoglobin tetramer
Hemoglobin in birds (as in mammals) functions as a tetramer
, which, in most avian species, is composed of combinations of 2 types of [alpha]-heme subunits with consistent [beta] subunits.
The nucleosome is composed of an octamer containing a H3/H4 tetramer
and two H2A/H2B dimers, surrounded by approximately 146 base pairs of DNA.
2+] ferrous haems within the haemoglobin tetramer
Hopeaphenol, a tetramer
stilbene, similar to a-viniferin, a trimer stilbene (Noviany and Hadi, 2008), is oligomeric stilbene which is also sometimes present in all Shorea genus.
An image of a human IgG1 antibody juxtaposed to the antigenic region of AQP-4 (depicted with EGFP attached to the N-termini of three monomers) demonstrates the relative sizes of the antibody and its antigen, and suggests that each tetramer
may only be bound by one or two antibody molecules (see Figure 5), although the actual epitopes and their sites on the extracellular domain of the antigen are not yet known.
More recently, the tandem tetramer
microsatellites (GACA)4 and [(CAAT).