Paneth cells are stimulated to secrete defensins when exposed to bacteria ( both negative types ) or such bacterial products as lipopolysaccharide, muramyl dipeptide and lipid A.
22.
Aspartyl proteases are a highly specific family of proteases-they tend to cleave dipeptide bonds that have hydrophobic residues as well as a beta-methylene group.
23.
Consequently, the preformation of suitably protected dipeptide derivatives of the type FMOC-Xaa1-Oxa / THz-OH is preferable for use in peptide synthesis.
24.
The dipeptide ?-glutamyltaurine ( ?-GT; glutaurine, Litoralon ) was discovered in the parathyroid in 1980, and later in the mammalian brain.
25.
An example of an organic herbicide is corn gluten meal, which releases an'organic dipeptide'into the soil to inhibit root formation of germinating weed seeds.
26.
It plays a role in the immune response by recognizing the bacterial molecules which possess the muramyl dipeptide ( MDP ) moiety and activating the NF-?B protein.
27.
"' Kyotorphin "'( L-tyrosyl-L-arginine ) is a neuroactive dipeptide which plays a role in pain regulation in the brain.
28.
Tabtoxin has been shown to be a dipeptide precursor that must undergo hydrolysis by a peptidase to yield the biologically active form, tabtoxinine-p-lactam ( T?L ).
29.
Polypeptides consisting of repeats of the dipeptide ( ?-amino-?-lactam plus a conventional amino acid ) have been shown to adopt a beta bend ribbon conformation.
30.
In step 7, the UDP MurNAc is converted to UDP-MurNAc pentapeptide by the addition of five amino acids, usually including the dipeptide D-alanyl-D-alanine.
