“…Abbreviations: BPTI, bovine pancreatic trypsin inhibitor; Cbz, benzyloxycarbonyl; dTdP, 2,2'-dithiodipyridine; DMF, dimethylformamide; DMSO, dimethylsulfoxide; DNS-GGACK, dansyl-L-glutarnylglycyl-Larginyl chloromethyl ketone; DTT, dithiothreitol; E-64, L-transepoxysuccinylleucylamido(4-guanidino)butane; HOAc, acetic acid; IAA, iodoacetic acid; pVIc, ll-amino-acid cofactor from the Cterminus of virion precursor protein pVI; PAGE, polyacrylamide gel electrophoresis; PCMB, p-chloromercuribenzoate; PMSF, phenylmethanesulfonyl fluoride; <Glu, pyroglutamic acid; rEP, recombinant endoproteinase; SBTI, soybean trypsin inhibitor; SDS, sodium dodecyl sulfate; TLCK, L-l-chloro-3-(4-tosylamido)-7-amino-2-heptanone HC1; TPCK, L-l-chloro-3-(4-tosylamido)°4-phenyl-2-butanone; ts-1, temperature-sensitive mutant H2ts-1 to cells but fail to initiate a productive infection [3,4]. The mutation in ts-1 was identified as a single base-pair change in a 204 codon open reading frame (L3 23-kDa) at the 3' end of the L3 family of late messages [5].…”