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Changes in amino acid on the — chain of insulin will vary it’s duration of action
B
B3 Asp substituted with a Lys and B29 Lys substituted with a Glu
Glulisine
Two Arg groups attached to B30 and A21 Asp substituted with a Gly
Glargine
B28 Pro and B29 Lys swap places
Lispro
B28 Pro substituted for an Asp
Aspart
B30 Thr removed and myristic acid is added to B20 Lys
Detemir
Effect: B3 Asp substituted with a Lys and B29 Lys substituted with a Glu
reduce ability to self associate
Effect: Two Arg groups attached to B30 and A21 Asp substituted with a Gly
allows it to precipitate slowly in body at neutral pH
Effect: B28 Pro and B29 Lys swap places
creates steric hindrance and reduced ability to self associate
Effect: B28 Pro substituted for an Asp
charge repulsion and steric hindrance
Effect: B30 Thr is removed and myristic acid is added to B20 Lys
increase self aggregation