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Solution structure of Iron-Sulfur cluster assembly protein IscU from Bacillus subtilis, with Zinc bound at the active site. Northeast Structural Genomics Consortium Target SR17
Authors
Kornhaber, G.J., Swapna, G.V., Ramelot, T.A., Cort, J.R., Kennedy, M.A., Montelione, G.T.
Assembly
NifU-like protein
Entity
1. NifU-like protein (polymer, Thiol state: all other bound), 147 monomers, 16166.32 Da Detail

MSFNANLDTL YRQVIMDHYK NPRNKGVLND SIVVDMNNPT CGDRIRLTMK LDGDIVEDAK FEGEGCSISM ASASMMTQAI KGKDIETALS MSKIFSDMMQ GKEYDDSIDL GDIEALQGVS KFPARIKCAT LSWKALEKGV AKEEGGN


2. ZN (non-polymer), 65.409 Da
Total weight
16231.7295 Da
Max. entity weight
16166.32 Da
Entity Connection
na 4 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1nasing1:CYS41:SG2:ZN1:ZN
2nasing1:CYS66:SG2:ZN1:ZN
3nasing1:CYS128:SG2:ZN1:ZN
4nasing1:ASP43:OD12:ZN1:ZN

Source organism
Bacillus subtilis
Exptl. method
NMR
Refine. method
Minimal constraint structure contained 492 conformationally restricting NOE-derived distance constraints, 108 hydrogen bond constraints, and 197 dihedral angle constraints. This resulted in 5.9 constraints per residue and 1.2 long range constraints per residue. Structure determination was performed
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 98.0 %, Completeness: 45.6 %, Completeness (bb): 66.2 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All45.6 % (758 of 1663)31.0 % (269 of 867)53.8 % (344 of 639)92.4 % (145 of 157)
Backbone66.2 % (580 of 876)50.2 % (152 of 303)68.1 % (292 of 429)94.4 % (136 of 144)
Sidechain33.5 % (309 of 922)20.7 % (117 of 564)53.3 % (184 of 345)61.5 % (8 of 13)
Aromatic18.8 % (15 of 80)35.0 % (14 of 40) 2.6 % (1 of 39) 0.0 % (0 of 1)
Methyl62.3 % (91 of 146)54.8 % (40 of 73)69.9 % (51 of 73)

1. NifU-like protein

MSFNANLDTL YRQVIMDHYK NPRNKGVLND SIVVDMNNPT CGDRIRLTMK LDGDIVEDAK FEGEGCSISM ASASMMTQAI KGKDIETALS MSKIFSDMMQ GKEYDDSIDL GDIEALQGVS KFPARIKCAT LSWKALEKGV AKEEGGN

Sample #1

Pressure 1 atm, Temperature 293 K, pH 6.5


#NameIsotope labelingTypeConcentration
1NifU-like protein[U-13C; U-15N; U-2H; NA-V,L,I-methyl]0.7 mM
2Potassium Phosphate100 mM
3Glycerol200 mM
4DTT1 mM
5NaN30.02 %
6D2O5 %
7H2O95 %
Sample #2

Pressure 1 atm, Temperature 293 K, pH 6.5


#NameIsotope labelingTypeConcentration
8NifU-like protein[U-13C; NA-Y,F; U-15N; U-2H; NA-Y,F]0.4 mM
9Sodium Phosphate20 mM
10Sodium Chloride50 mM
11DTT10 mM
12NaN30.02 %
13D2O5 %
14H2O95 %

LACS Plot; CA
Referencing offset: 0.29 ppm, Outliers: 1 Detail
LACS Plot; CB
Referencing offset: 0.29 ppm, Outliers: 1 Detail
Protein Blocks Logo
Calculated from 10 models in PDB: 1XJS, Strand ID: A Detail


Release date
2005-11-06
Citation
Solution NMR structure of the iron-sulfur cluster assembly protein U (IscU) with zinc bound at the active site
Ramelot, T.A., Cort, J.R., Goldsmith-Fischman, S., Kornhaber, G.J., Xiao, R., Shastry, R., Acton, T.B., Honig, B., Montelione, G.T., Kennedy, M.A.
J. Mol. Biol. (2004), 344, 567-583, PubMed 15522305 , DOI 10.1016/j.jmb.2004.08.038 ,
Related entities 1. NifU-like protein, : 1 : 6 : 2 : 63 entities Detail
Interaction partners 1. NifU-like protein, : 1 interactors Detail
Experiments performed 8 experiments Detail
nullKeywords SR17, NMR Structure, Autostructure, Iron-Sulfur, Zinc, Northeast Structural Genomics Consortium, NESG, NIFU-LIKE, Protein Structure Initiative, Structural Genomics