Word: receptors
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...targeting specific parts of the molecule for mutation and observing the results, Arnout and other researchers were able to pinpoint the position of the neutrophil receptor sites. They also found the key amino acid sequences which determine the neutrophil receptor structure...
...enzyme reported today has a makeup which places it as a new member of a family of enzymes known as G protein-coupled receptor kinases, according to the report's au- thors. These kinases are responsible forturning off signal transduction, the cascade ofreactions involved in communication with othercells...
...nature intended, the sheer number of pollen grains -- the botanical bearers of sperm -- ensured that at least some would reach and adhere to their natural goal: the stigma, a moist and sticky receptor of the female organ of the flower. That would start a fertilization process eventually resulting in seed and the propagation of the species. As a result of one of nature's oversights, however, many of the pollen grains reached another moist and sticky target first: a human eye or the mucous membranes of a nose or bronchial tube, where they set off a chain of events with...
Investigators studied the mechanism by which a mouse leukemia virus, MuLV, enters cells. They found that the receptor for this virus is a channel that allows positively charged amino acids to enter the cell. In further study, he and colleagues found that the gene encoding the sequence for this receptor was one whose structure allows specific molecules to pass through...
Computer-assisted searches comparing the receptor's amino acid sequence to other known proteins found that they were slightly similar to two amino acid importing proteins of yeast. Experiments with frog eggs proved that the protein did in fact play a role similar to that of these previously discovered proteins...