General Information of Binding Target of SBP (BTS) (ID: ST00329)
BTS Name
Alpha-mammal toxin AaH2
Synonyms
AaH II; AaHII; Neurotoxin II; Toxin II
BTS Type
Protein
Family
Long (4 C-C) scorpion toxin superfamily;
Sodium channel inhibitor family;
Alpha subfamily
Organism
Androctonus australis (Sahara scorpion)
Function
Alpha toxins bind voltage-independently at site-3 of sodium channels (Nav) and inhibit the inactivation of the activated channels, thereby blocking neuronal transmission. The toxin principally slows the inactivation process of TTX-sensitive sodium channels It is active on rat brain Nav1.2/SCN2A sodium channel (EC(50)=2.6 nM) and on rat skeletal muscle Nav1.4/SCN4A sodium channel (EC(50)=2.2 nM) This toxin is active against mammals. In vivo, intraplantar injection into mice induces spontaneous pain responses
UniProt ID
P01484
UniProt Entry
SCX2_ANDAU
PFam
PF00537
Sequence
MNYLVMISLALLFVTGVESVKDGYIVDDVNCTYFCGRNAYCNEECTKLKGESGYCQWASP
YGNACYCYKLPDHVRTKGPGRCHGR
Sequence Length
85
Synthetic Binding Protein (SBP) Targeting This BTS
SBP Name Highest Status Mechanism Affinity Application Details Ref
Nanobody anti-AaHII hu2NbAahII10-FERG Research Neutralizer Kd: 0.67 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII hu2NbAahII10-FERG-C/S Research Neutralizer Kd: 1.0 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII hu3NbAahII10-FERG Research Neutralizer Kd: 0.73 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII hu3NbAahII10FGLGC/S Research Neutralizer Kd: 0.93 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII NbAahII10 Research Neutralizer Kd: 0.93 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII NbAahII10C/A Research Neutralizer Kd: 0.53 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII NbAahII10C/S Research Neutralizer Kd: 0.63 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
Nanobody anti-AaHII NbAahII10C/T Research Neutralizer Kd: 2.3 nM Parkinson disease [ICD-11: XM9DM8]
SBP Info
[1]
References
1 Development of Cys38 knock-out and humanized version of NbAahII10 nanobody with improved neutralization of AahII scorpion toxin. Protein Eng Des Sel. 2011 Sep;24(9):727-35.