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The carboxy-terminal non-repetitive domain of a spider dragline silk protein regulates nucleation of silk assembly
Authors
Hagn, F.X., Eisoldt, L., Hardy, J., Vendrely, C., Coles, M., Scheibel, T., Kessler, H.
Assembly
NR3 dimer
Entity
1. NR3 dimer (polymer, Thiol state: all disulfide bound), 140 monomers, 13326.71 × 2 Da Detail

MASMTGGQQM GRGSMGAASA AVSVGGYGPQ SSSAPVASAA ASRLSSPAAS SRVSSAVSSL VSSGPTNQAA LSNTISSVVS QVSASNPGLS GCDVLVQALL EVVSALVSIL GSSSIGQINY GASAQYTQMV GQSVAQALAG


Total weight
26653.42 Da
Max. entity weight
13326.71 Da
Entity Connection
disulfide 1 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS92:SG1:CYS92:SG

Source organism
Araneus diadematus
Exptl. method
solution NMR
Refine. method
simulated annealing
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 99.3 %, Completeness: 96.3 %, Completeness (bb): 96.1 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All96.3 % (1321 of 1372)97.0 % (669 of 690)95.1 % (506 of 532)97.3 % (146 of 150)
Backbone96.1 % (798 of 830)97.9 % (285 of 291)94.1 % (380 of 404)98.5 % (133 of 135)
Sidechain96.8 % (645 of 666)96.2 % (384 of 399)98.4 % (248 of 252)86.7 % (13 of 15)
Aromatic100.0 % (24 of 24)100.0 % (12 of 12)100.0 % (12 of 12)
Methyl98.3 % (171 of 174)96.6 % (84 of 87)100.0 % (87 of 87)

1. NR3

MASMTGGQQM GRGSMGAASA AVSVGGYGPQ SSSAPVASAA ASRLSSPAAS SRVSSAVSSL VSSGPTNQAA LSNTISSVVS QVSASNPGLS GCDVLVQALL EVVSALVSIL GSSSIGQINY GASAQYTQMV GQSVAQALAG

Sample #1

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 298 K, pH 6.0, Details 1mM NR3 in 10mM sodium phosphate pH6.0 1% trifluoroethanol


#NameIsotope labelingTypeConcentration
1NR3[U-99% 13C; U-99% 15N]1 mM
2sodium phosphatenatural abundance10 mM
3trifluoroethanolnatural abundance1 %
4H2Onatural abundance95 %
5D2Onatural abundance5 %
Sample #2

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 298 K, pH 6.0


#NameIsotope labelingTypeConcentration
6NR3natural abundance0.6 ~ 1.0 mM
7H2Onatural abundance95 %
8D2Onatural abundance5 %
Sample #3

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 298 K, pH 6.0


#NameIsotope labelingTypeConcentration
9NR3[U-99% 13C; U-99% 15N]1 mM
10NR3natural abundance1 mM
11H2Onatural abundance95 %
12D2Onatural abundance5 %
Sample #4

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 298 K, pH 6.0


#NameIsotope labelingTypeConcentration
13NR3[U-99% 15N]0.2 ~ 1.0 mM
14H2Onatural abundance95 %
15D2Onatural abundance5 %

LACS Plot; CA
Referencing offset: -0.17 ppm, Outliers: 3 Detail
LACS Plot; CB
Referencing offset: -0.17 ppm, Outliers: 3 Detail
LACS Plot; HA
Referencing offset: 0.04 ppm, Outliers: 2 Detail
LACS Plot; CO
Referencing offset: -0.28 ppm, Outliers: 3 Detail
Protein Blocks Logo
Calculated from 21 models in PDB: 2KHM, Strand ID: A, B Detail


Release date
2010-05-06
Citation
A conserved spider silk domain acts as a molecular switch that controls fibre assembly
Hagn, F., Eisoldt, L., Hardy, J.G., Vendrely, C., Coles, M., Scheibel, T., Kessler, H.
Nature (2010), 465, 239-242, PubMed 20463741 , DOI 10.1038/nature08936 ,
Related entities 1. NR3 dimer, : 1 : 1 entities Detail
Experiments performed 20 experiments Detail
NMR combined restraints 3 contents Detail
Keywords biopolymers, fibers, NMR spectroscopy, protein folding, structure, alpha helix, homodimer, swapped