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NMR solution structure of midkine-b, mdkb
Authors
Yang, D., Lim, J., Meng, D.
Assembly
midkine-b
Entity
1. midkine-b (polymer, Thiol state: all disulfide bound), 127 monomers, 13989.90 Da Detail

GSMKKKEKGK EPKADAECSE WQYGKCVPNS GDCGNGIREA TCNEQTKKTK CKVPCNWKKD FGADCKYKFG RWAECDTTTG TRSRSGTLKK ALFNAECQTT IKVSKPCTPK TPKPKGGEKK KGKGKEN


Formula weight
13989.9 Da
Entity Connection
disulfide 5 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1disulfidesing1:CYS18:SG1:CYS42:SG
2disulfidesing1:CYS26:SG1:CYS51:SG
3disulfidesing1:CYS33:SG1:CYS55:SG
4disulfidesing1:CYS65:SG1:CYS97:SG
5disulfidesing1:CYS75:SG1:CYS107:SG

Source organism
Danio rerio
Exptl. method
solution NMR
Refine. method
simulated annealing
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 94.5 %, Completeness: 69.6 %, Completeness (bb): 77.3 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All69.6 % (1029 of 1478)68.6 % (544 of 793)66.2 % (366 of 553)90.2 % (119 of 132)
Backbone77.3 % (578 of 748)88.5 % (231 of 261)64.6 % (237 of 367)91.7 % (110 of 120)
Sidechain65.2 % (550 of 843)58.8 % (313 of 532)76.3 % (228 of 299)75.0 % (9 of 12)
Aromatic80.5 % (66 of 82)80.5 % (33 of 41)78.9 % (30 of 38)100.0 % (3 of 3)
Methyl97.0 % (64 of 66)97.0 % (32 of 33)97.0 % (32 of 33)

1. midkine-b

GSMKKKEKGK EPKADAECSE WQYGKCVPNS GDCGNGIREA TCNEQTKKTK CKVPCNWKKD FGADCKYKFG RWAECDTTTG TRSRSGTLKK ALFNAECQTT IKVSKPCTPK TPKPKGGEKK KGKGKEN

Sample

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 298 K, pH 6.5, Details 10 mM NaH2PO4/ Na2HPO4 at pH 6.5, 0.1 mM NaN3, 100 mM NaCl, 1 mM EDTA, 95% H2O, 5 % D2O


#NameIsotope labelingTypeConcentration
1potassium phosphatenatural abundance10 mM
2sodium azidenatural abundance0.1 mM
3sodium chloridenatural abundance100 mM
4EDTAnatural abundance1 mM
5midkine-b[U-100% 13C; U-100% 15N]0.8 mM
6H2Onatural abundance95 %
7D2Onatural abundance5 %

LACS Plot; CA
Referencing offset: -0.2 ppm, Outliers: 1 Detail
LACS Plot; CB
Referencing offset: -0.2 ppm, Outliers: 1 Detail
LACS Plot; HA
Referencing offset: 0.04 ppm, Outliers: 1 Detail
Protein Blocks Logo
Calculated from 10 models in PDB: 2LUU, Strand ID: A Detail


Release date
2013-04-01
Citation
Structure-function analysis of full-length midkine reveals novel residues important for heparin binding and zebrafish embryogenesis
Lim, J., Yao, S., Graf, M., Winkler, C., Yang, D.
Biochem. J. (2013), 451, 407-415, PubMed 23418741 , DOI 10.1042/BJ20121622 ,
Related entities 1. midkine-b, : 1 : 1 : 9 entities Detail
Experiments performed 6 experiments Detail
NMR combined restraints 4 contents Detail
Keywords beta sheet, disulfide bond, independent half-domain, midkine