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Characterization of a Novel Alpha4/6-Conotoxin TxIC from Conus textile that Potently Blocks alpha3beta4 Nicotinic Acetylcholine Receptors
Authors
Luo, S., Zhangsun, D., Zhu, X., Wu, Y., Hu, Y., Christensen, S., Akcan, M., Craik, D.J., McIntosh, J.
Assembly
Novel Alpha4/6-Conotoxin TxIC
Entity
1. Novel Alpha4/6-Conotoxin TxIC (polymer), 16 monomers, 1492.809 Da Detail

GCCSHPVCSA MSPICX


Formula weight
1492.809 Da
Entity Connection
disulfide 2 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS2:SG1:CYS8:SG
2disulfidesing1:CYS3:SG1:CYS15:SG

Source organism
Conus textile
Exptl. method
solution NMR
Refine. method
simulated annealing
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 93.8 %, Completeness: 94.5 %, Completeness (bb): 96.6 % Detail

Polymer type: polypeptide(L)

Total1H
All94.5 % (69 of 73)94.5 % (69 of 73)
Backbone96.6 % (28 of 29)96.6 % (28 of 29)
Sidechain93.2 % (41 of 44)93.2 % (41 of 44)
Aromatic50.0 % (1 of 2)50.0 % (1 of 2)
Methyl80.0 % (4 of 5)80.0 % (4 of 5)

1. TxIC

GCCSHPVCSA MSPICX

Sample

Solvent system 30% trifluoroethanol/70% water, Pressure 1 atm, Temperature 308 K, pH 3.5


#NameIsotope labelingTypeConcentration
1Conotoxinnatural abundance~3 mg
2H2Onatural abundance70 %
3Trifluoroethanolnatural abundance30 %

Protein Blocks Logo
Calculated from 20 models in PDB: 2M3I, Strand ID: A Detail


Release date
2013-12-19
Citation
Characterization of a novel α-conotoxin TxID from Conus textile that potently blocks rat α3β4 nicotinic acetylcholine receptors
Luo, S., Zhangsun, D., Zhu, X., Wu, Y., Hu, Y., Christensen, S., Harvey, P.J., Akcan, M., Craik, D.J., McIntosh, J.
J. Med. Chem. (2013), 56, 9655-9663, PubMed 24200193 , DOI 10.1021/jm401254c ,
Related entities 1. Novel Alpha4/6-Conotoxin TxIC, : 1 : 4 entities Detail
Experiments performed 3 experiments Detail
NMR combined restraints 4 contents Detail
Keywords ALPHA-CONOTOXIN, ALPHA-HELIX, AMIDATED C-TERMINUS, DISULFIDE BONDS