含肽段连接子是一类包含特定序列短肽的连接子，这类酶可裂解连接子已广泛应用于抗体偶联药物（ADC）中。ADC的作用机制是借助抗体的靶向性被精准的输送到靶细胞，接着由内吞途径进入细胞内，由于细胞内的溶酶体存在高浓度的蛋白水解酶，从而为含肽链连接子提供了在细胞内选择性裂解的机会，最终可以实现有效载荷的控制性释放。
Fmoc-Gly-Gly-Gly-OH
2,2-Dimethyl-4,7,10-trioxo-3-oxa-5,8,11-triazatridecan-13-oic acid
4-((S)-2-((S)-2-(6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanamido)-3-methylbutanamido)-5-ureidopentanamido)benzyl (4-nitrophenyl) carbonate
Fmoc-Val-Cit-PAB-OH
Boc-Val-Cit-OH
Fmoc-Val-Cit-PAB-PNP
Boc-Val-Gly-OH
(S)-2-((S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-methylbutanamido)propanoic acid
(S)-12-Benzyl-2,2-dimethyl-4,7,10,13-tetraoxo-3-oxa-5,8,11,14-tetraazahexadecan-16-oic acid
Boc-Gly-Gly-OSU
6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-((S)-1-(((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)hexanamide
tert-Butyl ((S)-1-(((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)carbamate
tert-Butyl ((S)-3-methyl-1-(((S)-1-((4-((((4-nitrophenoxy)carbonyl)oxy)methyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)amino)-1-oxobutan-2-yl)carbamate
4-((17S,20S)-1-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-17-isopropyl-15,18-dioxo-20-(3-ureidopropyl)-3,6,9,12-tetraoxa-16,19-diazahenicosanamido)benzyl (4-nitrophenyl) carbonate
4-((2S,5S)-19-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-5-isopropyl-4,7,17-trioxo-2-(3-ureidopropyl)-10,13-dioxa-3,6,16-triazanonadecanamido)benzyl (4-nitrophenyl) carbonate
(9H-Fluoren-9-yl)methyl ((S)-1-(((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxopropan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)carbamate
6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-N-((S)-1-(((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxopropan-2-yl)amino)-3-methyl-1-oxobutan-2-yl)hexanamide
N-(Allyloxycarbonyl)-L-valyl-[4-(hydroxymethyl)phenyl]-L-alaninamide
(9H-Fluoren-9-yl)methyl ((S)-3-methyl-1-(((S)-1-((4-((((4-nitrophenoxy)carbonyl)oxy)methyl)phenyl)amino)-1-oxopropan-2-yl)amino)-1-oxobutan-2-yl)carbamate
4-((S)-2-((S)-2-(6-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)hexanamido)-3-methylbutanamido)propanamido)benzyl (4-nitrophenyl) carbonate
(S)-10-Benzyl-23-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-6,9,12,15,18-pentaoxo-3-oxa-5,8,11,14,17-pentaazatricosan-1-oic acid
1-(9H-Fluoren-9-yl)-3,6-dioxo-2,9-dioxa-4,7-diazaundecan-11-oic acid
(S)-11-Benzyl-1-(9H-fluoren-9-yl)-3,6,9,12,15-pentaoxo-2,18-dioxa-4,7,10,13,16-pentaazaicosan-20-oic acid
(S)-2-Amino-N-((S)-1-((4-(hydroxymethyl)phenyl)amino)-1-oxopropan-2-yl)-3-methylbutanamide
tert-Butyl ((S)-5-((S)-2-amino-3-methylbutanamido)-6-((4-(hydroxymethyl)phenyl)amino)-6-oxohexyl)carbamate
4-((17S,20S)-1-(DBCO-Butanedicarboxylamino)-17-isopropyl-15,18-dioxo-20-(3-ureidopropyl)-3,6,9,12-tetraoxa-16,19-diazahenicosan-21-amido)benzyl (4-nitrophenyl) carbonate
4-((2S,5S)-37-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-5-isopropyl-2-methyl-4,7,35-trioxo-10,13,16,19,22,25,28,31-octaoxa-3,6,34-triazaheptatriacontanamido)benzyl (4-nitrophenyl) carbonate
Ethyl (S)-1-((1-((4-((((4-nitrophenoxy)carbonyl)oxy)methyl)phenyl)amino)-1-oxo-5-ureidopentan-2-yl)carbamoyl)cyclobutane-1-carboxylate
(((9H-Fluoren-9-yl)methoxy)carbonyl)glycylglycyl-L-phenylalanylglycine
(S)-2-(2-(2-Aminoacetamido)acetamido)-N-(2-((4-(hydroxymethyl)phenyl)amino)-2-oxoethyl)-3-phenylpropanamide
