N-terminal truncations sites by class and residue position (flexible rigid and context-dependent)
Class A No. PDBs each state***
Receptor Uniprot Species* Ina Int Act Pos** No.PDBs
β1 ADRB1 melga 6 -11 6
μ OPRM mouse 2 -8 2
A2A AA2AR 1 -7 1
β1 ADRB1 melga 1 -7 1
M1 ACM1 3 -6 3