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Structure of insect-specific sodium channel toxin mu-Dc1a
Authors
Bende, N.S., Mobli, M., King, G.F.
Assembly
DC1A
Entity
1. DC1A (polymer, Thiol state: all disulfide bound), 57 monomers, 6492.358 Da Detail

SAKDGDVEGP AGCKKYDVEC DSGECCQKQY LWYKWRPLDC RCLKSGFFSS KCVCRDV


Formula weight
6492.358 Da
Entity Connection
disulfide 4 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS13:SG1:CYS26:SG
2disulfidesing1:CYS20:SG1:CYS40:SG
3disulfidesing1:CYS25:SG1:CYS54:SG
4disulfidesing1:CYS42:SG1:CYS52:SG

Source organism
Diguetia canities
Exptl. method
solution NMR
Refine. method
torsion angle dynamics
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 100.0 %, Completeness: 98.6 %, Completeness (bb): 97.9 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All98.6 % (646 of 655)98.8 % (341 of 345)98.4 % (247 of 251)98.3 % (58 of 59)
Backbone97.9 % (331 of 338)97.4 % (114 of 117)98.2 % (163 of 166)98.2 % (54 of 55)
Sidechain99.5 % (367 of 369)99.6 % (227 of 228)99.3 % (136 of 137)100.0 % (4 of 4)
Aromatic97.1 % (66 of 68)97.1 % (33 of 34)96.9 % (31 of 32)100.0 % (2 of 2)
Methyl100.0 % (32 of 32)100.0 % (16 of 16)100.0 % (16 of 16)

1. Dc1a

SAKDGDVEGP AGCKKYDVEC DSGECCQKQY LWYKWRPLDC RCLKSGFFSS KCVCRDV

Sample

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 298 K, pH 5.0


#NameIsotope labelingTypeConcentration
1Dc1a[U-99% 13C; U-99% 15N]350 uM
2sodium acetatenatural abundance20 mM
3H2Onatural abundance95 %
4D2Onatural abundance5 %

LACS Plot; CA
Referencing offset: -0.27 ppm, Outliers: 2 Detail
LACS Plot; CB
Referencing offset: -0.27 ppm, Outliers: 2 Detail
LACS Plot; HA
Referencing offset: 0.06 ppm, Outliers: 1 Detail
LACS Plot; CO
Referencing offset: 0.69 ppm, Outliers: 2 Detail
Protein Blocks Logo
Calculated from 20 models in PDB: 2MI5, Strand ID: A Detail


Release date
2014-07-13
Citation 1
A distinct sodium channel voltage-sensor locus determines insect selectivity of the spider toxin Dc1a
Bende, N.S., Dziemborowicz, S., Mobli, M., Herzig, V., Gilchrist, J., Nicholson, G.M., King, G.F., Bosmans, F.
Nat. Commun. (2014), 5, 4350-4350, PubMed 25014760 , DOI 10.1038/ncomms5350 ,
Citation 2
Characterization and cloning of insecticidal peptides from the primitive weaving spider Diguetia canities
Krapcho, K.J., Kral, R.M., Vanwagenen, B., Eppler, K.G., Morgan, T.K.
Insect Biochem. Mol. Biol. (1995), 25, 991-1000, PubMed 8541888 , DOI: ,
Citation 3
Mode of action of an insecticidal peptide toxin from the venom of a weaving spider (Diguetia canities)
Bloomquist, J.R., Kinne, L.P., Deutsch, V., Simpson, S.F.
Toxicon. (1996), 34, 1072-1075, PubMed 8896202 , DOI: ,
Entries sharing articles Swiss-Prot: 3 entries Detail
  Swiss-Prot: P55816 released on 1997-11-01
    Title TXI11_DIGCA Entity Mu-diguetoxin-Dc1b
  Swiss-Prot: P55817 released on 1997-11-01
    Title TXI12_DIGCA Entity Mu-diguetoxin-Dc1c
  Swiss-Prot: P49126 released on 1996-02-01
    Title TXI92_DIGCA Entity Mu-diguetoxin-Dc1a
Related entities 1. DC1A, : 1 : 7 : 1 : 4 entities Detail
Experiments performed 10 experiments Detail
NMR combined restraints 4 contents Detail
Keywords Diguetia canities, DTX9.2, gating modifier, insecticidal toxin, non-uniform sampling, peptide, sodium channel, spider venom, voltage-sensor