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Solution structure of spider toxin Ssp1a
Authors
Wilson, D.T., Daly, N.L., Dongol, Y., Lewis, R.J.
Assembly
Ssp1a toxin
Entity
1. Ssp1a toxin (polymer, Thiol state: all disulfide bound), 34 monomers, 4033.509 Da Detail

GDCLGWFSGC DPNNNKCCEG YVCHWKYPWC RYDL


Formula weight
4033.509 Da
Entity Connection
disulfide 4 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS3:SG1:CYS18:SG
2disulfidesing1:CYS10:SG1:CYS23:SG
3disulfidesing1:CYS10:SG1:CYS30:SG
4disulfidesing1:CYS17:SG1:CYS30:SG

Source organism
Selenotypus
Exptl. method
solution NMR
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 100.0 %, Completeness: 62.9 %, Completeness (bb): 55.5 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All62.9 % (251 of 399)93.2 % (193 of 207)16.3 % (25 of 153)84.6 % (33 of 39)
Backbone55.5 % (111 of 200)95.7 % (67 of 70)18.4 % (18 of 98)81.3 % (26 of 32)
Sidechain65.1 % (149 of 229)92.0 % (126 of 137)18.8 % (16 of 85)100.0 % (7 of 7)
Aromatic52.7 % (39 of 74)97.3 % (36 of 37) 0.0 % (0 of 34)100.0 % (3 of 3)
Methyl83.3 % (10 of 12)100.0 % (6 of 6)66.7 % (4 of 6)

1. entity 1

GDCLGWFSGC DPNNNKCCEG YVCHWKYPWC RYDL

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 290 K, pH 4, Details 0.5 mM Ssp1a, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1Ssp1anatural abundance0.5 mM

Release date
2021-11-04
Citation
Voltage-Gated Sodium Channel Modulation by a New Spider Toxin Ssp1a Isolated From an Australian Theraphosid
Dongol, Y., Choi, P.M., Wilson, D.T., Daly, N.L., Cardoso, F.C., Lewis, R.J.
Front. Pharmacol. (2021), 12, 795455-795455, PubMed 35002728 , DOI 10.3389/fphar.2021.795455 ,
Related entities 1. Ssp1a toxin, : 1 : 137 entities Detail
Experiments performed 5 experiments Detail
Chemical shift validation 3 contents Detail
Keywords ICK peptide, TOXIN