To determine how different amino acid sequences form similar protein structures, and how proteins adapt to mutations that change the volume of residues buried in their close-packed interiors, we have analysed and compared the atomic structures of nine different globins. The homology of the sequence...
In the wild, the cereal grain is distributed by the wind, and when conditions are right, the germ (embryo) begins the process of growth using the endosperm for energy. It may come as a surprise, but plants are not benign, altruistic organisms just waiting to send their next generation of...
Imagine you're James Bond, and you have to get into a secret laboratory to disarm a deadly biological weapon and save the world. But first, you have to get past the security system. It requires more than just a key or a password -- you need to have the villain'sirises, his voice ...
(UUU), which codes for the amino acid phenylalanine, then the anti-codon on the phenylalanine tRNA will be adenine-adenine-adenine (AAA); remember that A binds with U in RNA. The tRNA molecules float in the cytoplasm and bind free amino acids. Once bound to amino acids, the tRNAs (...
The presynaptic cell (sending cell) makes serotonin (5-hydroxytryptamine, 5HT) from the amino acid tryptophan and packages it in vesicles in its end terminals. An electrochemical nerve signal passes down the presynaptic cell into its end terminals. The nerve signal stimulates the vesicles containing...
not exist as isolated entities but rather interact and influence each other. To a certain extent,S. mutanscreates a lactic acid-rich environment in carious lesions that facilitates the proliferation ofVeillonellaspecies12, which have been shown to promote the growth ofS. mutansin biofilm studies24....
Next a permeabilization step with detergents is performed to enable the antibodies to cross the cellular membranes. Blocking with normal serum, milk powder or bovine serum albumin reduces the unspecific binding of antibodies to non-target structures in order to minimize false-positive signals. Next ...
My advice on this question is: first of all, to distinguish between those who need memory, and those who do not need memory at all. Such as the three letter amino acid and single letter symbols, some key words abbreviations, amino acids and bases of the structure is to remember, and ...
Vacuum machine: Remember the sous vide steak we talked about? If you really want to do the job right, consider a vacuum sealer. A good model will evacuate the air from plastic bags and then seal the bag tightly closed. You can also buy a thermal bath to provide precise heating of your...
Evolution is fascinating because it attempts to answer one of the most basic human questions: Where did life, and human beings, come from? The theory of evolution proposes that life and humans arose through a natural process.