Whereas extensive interactions had been predicted between insulin and L1, the major interface is between insulin and CT
Preferably it is 20C
Mishra, D., Jain, N., Rajoriya, V
Xu X, Qin Z, Zhang C, Mi X, Zhang C, Zhou F

Other examples include, but are not limited to, carboxylic acids activated with an uronium salt or a phosphonium salt, such as but not limited to, O-Benzotriazole-N,N,N,N-tetramethyluronium hexafluorophosphate (HBTU), O-(Benzotriazol-1-yl)-N,N,N,N-tetramethyluronium tetrafluoroborate (TBTU), 2-(6-Chloro-1H-benzotriazole-1,1,3,3-tetramethylaminium hexafluorophosphate (HCTU), 2-(6-Chloro-1H-benzotriazole-1-yl)-1,1,3,3-tetramethylaminium tetrafluoroborate (TCTU), 2-(1H-7-Azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate (HATU), 2-(3,4-Dihydro-4-oxo-1,2,3-benzotriazin-3-yl)-N,N,N,N-tetramethyluroniu-m hexafluorophosphate (HDBTU), 2-Succinimido-1,1,3,3-tetramethyluronium hexafluorophosphate (HSTU), N,N,N,N-Tetramethyl-O-(succinimidyl)uronium tetrafluoroborate (TSTU), 2-(endo-5-norbornene-2,3-dicarboxymido)-1,1,3,3-tetramethyluronium hexafluorophosphate (HNTU), 1-benzotriazolyoxytris-(dimethylamino)phosphonium hexafluorophosphate (BOP) or benzotriazol-1-yl-oxytripyrrolidinophosphonium hexafluorophosphate (PYBOP)
