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Solution NMR structure of a novel cysteine framework containing Conus peptide Mo3964
Authors
Sarma, S.P., Kancherla, A.
Assembly
Monomer of Mo3964
Entity
1. Monomer of Mo3964 (polymer, Thiol state: all disulfide bound), 37 monomers, 3970.361 Da Detail

DGECGDKDEP CCGRPDGAKV CNDPWVCILT SSRCENP


Formula weight
3970.361 Da
Entity Connection
disulfide 3 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS4:SG1:CYS21:SG
2disulfidesing1:CYS11:SG1:CYS27:SG
3disulfidesing1:CYS12:SG1:CYS34:SG

Source organism
Conus monile
Exptl. method
solution NMR
Refine. method
torsion angle dynamics, molecular dynamics
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 100.0 %, Completeness: 98.2 %, Completeness (bb): 99.1 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All98.2 % (374 of 381)97.0 % (195 of 201)100.0 % (144 of 144)97.2 % (35 of 36)
Backbone99.1 % (212 of 214)98.6 % (73 of 74)100.0 % (107 of 107)97.0 % (32 of 33)
Sidechain97.5 % (195 of 200)96.1 % (122 of 127)100.0 % (70 of 70)100.0 % (3 of 3)
Aromatic100.0 % (12 of 12)100.0 % (6 of 6)100.0 % (5 of 5)100.0 % (1 of 1)
Methyl100.0 % (20 of 20)100.0 % (10 of 10)100.0 % (10 of 10)

1. Mo3964

DGECGDKDEP CCGRPDGAKV CNDPWVCILT SSRCENP

Sample #1

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 298 K, pH 5.35 (±0.05)


#NameIsotope labelingTypeConcentration
1Mo3964[U-13C; U-15N]0.5 ~ 1.0 mM
2sodium azidenatural abundance0.02 %
3sodium acetate[U-100% 2H]50 mM
4H2Onatural abundance90 %
5D2O[U-100% 2H]10 %
Sample #2

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 298 K, pH 5.35 (±0.05)


#NameIsotope labelingTypeConcentration
6Mo3964[U-15N]0.5 ~ 1.0 mM
7sodium azidenatural abundance0.02 %
8sodium acetate[U-100% 2H]50 mM
9H2Onatural abundance90 %
10D2O[U-100% 2H]10 %
Sample #3

Solvent system 100% D2O, Pressure 1 atm, Temperature 298 K, pH 5.35 (±0.05), Details pH was 5.35 without the isotope correction


#NameIsotope labelingTypeConcentration
11Mo3964[U-13C; U-15N]0.5 ~ 1.0 mM
12sodium azidenatural abundance0.02 %
13sodium acetate[U-100% 2H]50 mM
14D2O[U-100% 2H]100 %
Sample #4

Solvent system 100% D2O, Pressure 1 atm, Temperature 298 K, pH 5.35 (±0.05), Details pH was 5.35 without the isotope correction


#NameIsotope labelingTypeConcentration
15Mo3964[U-15N]0.5 ~ 1.0 mM
16sodium azidenatural abundance0.02 %
17sodium acetate[U-100% 2H]50 mM
18D2O[U-100% 2H]100 %

Protein Blocks Logo
Calculated from 20 models in PDB: 2MW7, Strand ID: A Detail


Release date
2015-09-20
Citation
A Disulfide Stabilized β-Sandwich Defines the Structure of a New Cysteine Framework M-Superfamily Conotoxin
Kancherla, A.K., Meesala, S., Jorwal, P., Palanisamy, R., Sikdar, S.K., Sarma, S.P.
ACS Chem. Biol. (2015), 10, 1847-1860, PubMed 25961405 , DOI 10.1021/acschembio.5b00226 ,
Related entities 1. Monomer of Mo3964, : 2 entities Detail
Experiments performed 20 experiments Detail
NMR combined restraints 4 contents Detail
Keywords Conotoxin, Disulfide bonds, ion-channel modulator