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The glutathione analogues were also screened at a concentration of 100 M each in the in vitro assay, but surprisingly all of them proved to be ineffective as inhibitors against the ChaC1 enzyme (Figure S2)

2006 Feb;29(2):300-5

Selection and counterselection of Hia expression reveals a key role for phase-variable expression of Hia in infection caused by nontypeable Haemophilus influenzae

A peptide with reduced acidity was designed for increased cell permeability The p53 TAD2 sequence exhibited a highly negative charge, whereas the p53 binding interface of the FOXO4 FHD contains several positively charged residues