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The structure of chaperone SecB in complex with unstructured MBP binding site e
Authors
Huang, C., Saio, T., Rossi, P., Kalodimos, C.G.
Assembly
Protein-export protein SecB, Maltose-binding periplasmic protein
Entity
1. Protein-export protein SecB (polymer), 155 monomers, 17277.16 × 4 Da Detail

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA


2. Maltose-binding periplasmic protein (polymer, Thiol state: not present), 40 monomers, 4590.168 × 4 Da Detail

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV


Total weight
87469.31 Da
Max. entity weight
17277.16 Da
Source organism
Escherichia coli O157:H7
Exptl. method
solution NMR
Refine. method
molecular dynamics
Data set
assigned_chemical_shifts
Chem. Shift Complete1
Sequence coverage: 80.5 %, Completeness: 52.6 %, Completeness (bb): 68.9 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All52.6 % (1192 of 2267)40.1 % (469 of 1170)64.2 % (568 of 885)73.1 % (155 of 212)
Backbone68.9 % (794 of 1152)53.3 % (210 of 394)76.2 % (436 of 572)79.6 % (148 of 186)
Sidechain41.4 % (537 of 1297)33.4 % (259 of 776)54.7 % (271 of 495)26.9 % (7 of 26)
Aromatic45.6 % (104 of 228)49.1 % (56 of 114)42.0 % (47 of 112)50.0 % (1 of 2)
Methyl77.5 % (158 of 204)77.5 % (79 of 102)77.5 % (79 of 102)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete2
Sequence coverage: 82.6 %, Completeness: 52.6 %, Completeness (bb): 68.8 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All52.6 % (2383 of 4534)39.9 % (934 of 2340)64.5 % (1142 of 1770)72.4 % (307 of 424)
Backbone68.8 % (1584 of 2304)52.5 % (414 of 788)76.4 % (874 of 1144)79.6 % (296 of 372)
Sidechain41.6 % (1078 of 2594)33.6 % (521 of 1552)55.2 % (546 of 990)21.2 % (11 of 52)
Aromatic42.3 % (193 of 456)45.2 % (103 of 228)39.3 % (88 of 224)50.0 % (2 of 4)
Methyl76.0 % (310 of 408)76.0 % (155 of 204)76.0 % (155 of 204)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete3
Sequence coverage: 81.5 %, Completeness: 52.6 %, Completeness (bb): 68.7 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All52.6 % (3578 of 6801)40.1 % (1409 of 3510)64.5 % (1712 of 2655)71.9 % (457 of 636)
Backbone68.7 % (2375 of 3456)52.6 % (622 of 1182)76.5 % (1312 of 1716)79.0 % (441 of 558)
Sidechain41.7 % (1622 of 3891)33.8 % (788 of 2328)55.1 % (818 of 1485)20.5 % (16 of 78)
Aromatic40.8 % (279 of 684)43.9 % (150 of 342)37.5 % (126 of 336)50.0 % (3 of 6)
Methyl76.6 % (469 of 612)76.8 % (235 of 306)76.5 % (234 of 306)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete4
Sequence coverage: 81.0 %, Completeness: 52.1 %, Completeness (bb): 68.7 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All52.1 % (4720 of 9068)39.4 % (1843 of 4680)64.2 % (2271 of 3540)71.5 % (606 of 848)
Backbone68.7 % (3164 of 4608)52.7 % (830 of 1576)76.3 % (1746 of 2288)79.0 % (588 of 744)
Sidechain40.7 % (2113 of 5188)32.7 % (1015 of 3104)54.5 % (1080 of 1980)17.3 % (18 of 104)
Aromatic40.9 % (373 of 912)43.9 % (200 of 456)37.7 % (169 of 448)50.0 % (4 of 8)
Methyl77.0 % (628 of 816)77.2 % (315 of 408)76.7 % (313 of 408)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete5
Sequence coverage: 58.5 %, Completeness: 49.4 %, Completeness (bb): 65.2 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All49.4 % (5595 of 11335)37.7 % (2205 of 5850)60.3 % (2670 of 4425)67.9 % (720 of 1060)
Backbone65.2 % (3753 of 5760)50.6 % (996 of 1970)72.0 % (2059 of 2860)75.1 % (698 of 930)
Sidechain38.5 % (2496 of 6485)31.2 % (1211 of 3880)51.0 % (1263 of 2475)16.9 % (22 of 130)
Aromatic33.9 % (386 of 1140)36.5 % (208 of 570)31.1 % (174 of 560)40.0 % (4 of 10)
Methyl71.8 % (732 of 1020)72.2 % (368 of 510)71.4 % (364 of 510)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete6
Sequence coverage: 59.5 %, Completeness: 47.6 %, Completeness (bb): 62.8 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All47.6 % (6473 of 13602)36.7 % (2573 of 7020)57.9 % (3072 of 5310)65.1 % (828 of 1272)
Backbone62.8 % (4342 of 6912)49.2 % (1163 of 2364)69.3 % (2377 of 3432)71.9 % (802 of 1116)
Sidechain37.1 % (2886 of 7782)30.3 % (1412 of 4656)48.8 % (1448 of 2970)16.7 % (26 of 156)
Aromatic31.4 % (430 of 1368)33.6 % (230 of 684)29.2 % (196 of 672)33.3 % (4 of 12)
Methyl66.7 % (816 of 1224)67.0 % (410 of 612)66.3 % (406 of 612)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete7
Sequence coverage: 54.4 %, Completeness: 45.9 %, Completeness (bb): 60.3 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All45.9 % (7282 of 15869)35.9 % (2941 of 8190)55.1 % (3414 of 6195)62.5 % (927 of 1484)
Backbone60.3 % (4866 of 8064)48.2 % (1329 of 2758)66.0 % (2643 of 4004)68.7 % (894 of 1302)
Sidechain35.9 % (3259 of 9079)29.7 % (1614 of 5432)46.5 % (1612 of 3465)18.1 % (33 of 182)
Aromatic28.3 % (451 of 1596)30.6 % (244 of 798)25.9 % (203 of 784)28.6 % (4 of 14)
Methyl63.6 % (908 of 1428)64.0 % (457 of 714)63.2 % (451 of 714)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

Chem. Shift Complete8
Sequence coverage: 61.0 %, Completeness: 45.0 %, Completeness (bb): 59.0 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All45.0 % (8153 of 18136)35.5 % (3323 of 9360)53.5 % (3789 of 7080)61.4 % (1041 of 1696)
Backbone59.0 % (5439 of 9216)47.5 % (1497 of 3152)64.2 % (2940 of 4576)67.3 % (1002 of 1488)
Sidechain35.2 % (3654 of 10376)29.4 % (1828 of 6208)45.1 % (1787 of 3960)18.8 % (39 of 208)
Aromatic26.8 % (489 of 1824)29.2 % (266 of 912)24.4 % (219 of 896)25.0 % (4 of 16)
Methyl60.4 % (985 of 1632)60.7 % (495 of 816)60.0 % (490 of 816)

1. Protein-export protein SecB

MSEQNNTEMT FQIQRIYTKD ISFEAPNAPH VFQKDWQPEV KLDLDTASSQ LADDVYEVVL RVTVTASLGE ETAFLCEVQQ GGIFSIAGIE GTQMAHCLGA YCPNILFPYA RECITSMVSR GTFPQLNLAP VNFDALFMNY LQQQAGEGTE EHQDA

2. Maltose-binding periplasmic protein

KGKSALMFNL QEPYFTWPLI AADGGYAFKY ENGKYDIKDV

Sample

Solvent system 90% H2O/10% D2O, Pressure 1 atm, Temperature 301 K, pH 7, Details 300 uM [U-100% 13C; U-100% 15N] E.coli Chaperone SecB, 300 uM [U-100% 13C; U-100% 15N] E.coli Maltose Binding Protein (MBP) binding site e, 150 mM potassium chloride, 50 mM sodium phosphate, 50 mM potassium phosphate, 90% H2O/10% D2O


#NameIsotope labelingTypeConcentration
1E.coli Chaperone SecB[U-100% 13C; U-100% 15N]300 uM
2E.coli Maltose Binding Protein (MBP) binding site e[U-100% 13C; U-100% 15N]300 uM
3potassium chloridenatural abundance150 mM
4potassium phosphatenatural abundance50 mM
5sodium phosphatenatural abundance50 mM
6H2Onatural abundance90 %
7D2Onatural abundance10 %

LACS Plot; CA
Referencing offset: 0.01 ppm, Outliers: 1 Detail
LACS Plot; CB
Referencing offset: 0.01 ppm, Outliers: 1 Detail
LACS Plot; CO
Referencing offset: 0.42 ppm, Outliers: 3 Detail
Protein Blocks Logo
Calculated from 20 models in PDB: 5JTR, Strand ID: A, B, C, D, E, F, G, H Detail


Release date
2016-08-17
Citation
Structural basis for the antifolding activity of a molecular chaperone
Huang, C., Saio, T., Rossi, P., Kalodimos, C.G.
Nature (2016), 537, 202-206, PubMed 27501151 , DOI 10.1038/nature18965 ,
Related entities 1. Protein-export protein SecB, : 1 : 8 : 3 : 1 : 99 entities Detail
Related entities 2. Maltose-binding periplasmic protein, : 1 : 100 : 6 entities Detail
Experiments performed 3 experiments Detail
NMR combined restraints 11 contents Detail
Keywords Molecular Chaperone