“…All amyloid peptides [Aβ [17][18][19][20][21][22][23][24][25][26][27][28] , Aβ [22][23][24][25][26][27][28][29][30][31][32][33][34][35] , Aβ [32][33][34][35] , Aβ [25][26][27][28][29][30][31][32][33][34][35] and Aβ ], acrylamide; bis-acrylamide, bromophenol blue, N, N, N' , N'-tetramethylethylenediamine, ammonium persulphate, β-mercaptoethanol, Coomassie Blue commercial stain, Nα-benzoyl-l-arginine ethyl ester hydrochloride, DL-citrulline, calcium chloride, tetrahydro-l-biopterin dichloride, β-nicotinamide adenine dinucleotide phosphate reduced tetrasodium salt, thiosemicarbazide, 2,3 butanedione monoxime, DEAE-Sepharose ® , bovine serum albumin, Bradford reagent, ethylenediaminetetracetic acid and 4-(2-hydroxyethyl) piperazine-N'-(2-ethane-sulphonic acid monosodium salt [Hepes] were obtained from Sigma-Aldrich (Johannesburg, South Africa). Commercial nNOS obtained from rat brain, dithiothreitol (DTT), sodium dodecyl sulphate (SDS), glycerol (50%), Tris (hydroxymethyl) aminomethane, phenylmethylsulphonylfluoride (PMSF), ferric chloride hexahydrate (FeCl 3 ), sodium chloride (NaCl), perchloric acid, sulphuric acid, ortho-phosphoric ac...…”