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
β3 ADRB3 2 -12 2
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
GPR21 GPR21 1 -5 1
D2 DRD2 3 -4 3
5-HT1A 5HT1A 1 -3 1
β2 ADRB2 3 3 5 -3 11
chemerin CML1 1 -3 1
5-HT1E 5HT1E 1 -2 1
FFA2 FFAR2 1 -2 1
δ OPRD 2 -2 2
5-HT2A 5HT2A 6 -1 6
A2A AA2AR 57 6 -1 63
BB2 GRPR 1 -1 1
ORF74 Q76SF8 hhv8 1 -1 1
A2A AA2AR 10 5 0 15
β1 ADRB1 melga 17 0 17
chemerin 2 CML2 1 0 1
D1 DRD1 1 0 1
GPR119 GP119 7 0 7
OT OXYR 1 0 1
β1 ADRB1 melga 1 1 1
β2 ADRB2 1 1 1
5-HT2A 5HT2A 6 2 6
5-HT6 5HT6R 1 2 1
A2B AA2BR 2 2 2