N-terminal truncations sites by class and residue position (flexible rigid and context-dependent)
Class ANo. PDBs each state***
ReceptorUniprotSpecies*InaIntActPos**No.PDBs
β1 ADRB1 melga 6 -11 6
D2 DRD2 1 -4 1
β2 ADRB2 1 1 -3 2
A2A AA2AR 28 3 -1 31
A2A AA2AR 8 4 1 0 13
β1 ADRB1 melga 17 0 17
β2 ADRB2 1 1 1
β1 ADRB1 melga 1 2 1
β2 ADRB2 1 2 1
BLT1 Q9WTK1 cavpo 1 2 1
C5a1 C5AR1 1 3 1
FFA1 FFAR1 4 3 4
δ OPRD mouse 1 3 1
A1 AA1R 1 1 4 2
M4 ACM4 1 4 1
C5a1 C5AR1 2 4 2
M3 ACM3 rat 4 7 4
5-HT1B 5HT1B 1 8 1
CCR2 CCR2 1 8 1
PAF PTAFR 1 1 8 2
M2 ACM2 5 9 5
H1 HRH1 1 9 1
EP3 PE2R3 1 9 1
AT2 AGTR2 1 10 1
apelin APJ 1 10 1
5-HT1B 5HT1B 1 11 1
NTS1 NTR1 rat 4 11 4
5-HT1B 5HT1B 2 12 2
5-HT2B 5HT2B 1 12 1
CB1 CNR1 1 2 13 3