Hopeaphenol, a Dehydroresveratrol Tetramer
from Indonesian Shorea selanica Blume (Dipterocarpacaeae), Internasional Seminar on Natural Products Chemistry and Utilization of Natural Resources, Jakarta, Indonesia, Abstr.
7,14) Freeze fracture images are available of astrocytic foot processes in rat brain and spinal cord, (15-17) which show a variety of regular arrays of intramembrane particles (IMP), believed to be AQP-4 tetramers
, arranged into higher order particles called orthogonally arranged particles (OAPs) or square arrays.
In tissues of vertebrates this metabolically crucial reaction is catalysed by four isoenzymes, denoted as Ml, M2, L, and R forms of PK, which all are tetramers
and consist of similar subunits .
It also has unit to convert paraffin into olefin called Paraffin Convert to Olefin (PACOL) units with production capacity of 120,000 tons a year of linear alkyl benzene (LAB), and other production units to produce branch alkyl benzene (BAB), which is produced through a reaction between benzene and propylene tetramer
The measurement of antigen-specific T-cell responses has been greatly improved with the development of fluorescence-activated cell sorting assays using tetramers
of recombinant major histocompatibility complex (MHC)  molecules loaded with specific peptides (1,2).
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.
The size of one of the detected bands >100 kDa is similar in size to the tetramer
formation of SiM proteins (17); however, experimental evidence is needed to confirm this.
Disease is caused by insufficient functional hemoglobin, as well as tetramer
formation of the unaffected globin chain.
In the new study, researchers identified the sphere's basic building block, a four-piece arrangement of CP molecules called a tetramer
, which could also be building blocks for other viruses' protein coats.
For example, phosphorylation of p53 inhibits the binding of Mdm2 (a ubiquitin ligase), increases p53 stability that results in tetramer
formation and upregulation of p53 dependent gene expression thereby regulating damage response pathways including cell cycle arrest and apoptosis (8).
A single sequence change destabilizes the influenza virus neuraminidase tetramer
At the molecular level, considering the three-dimensional model of the hemoglobin molecule, it would appear that the stability of the hemoglobin tetramer
is dependent on both the internal molecular positioning of nonpolar amino acids and the stability of the large [[alpha].