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Structure and dynamics of the acidosis-resistant a162H mutant of the switch region of troponin I bound to the regulatory domain of troponin C
Authors
Pineda Sanabria, S.E., Robertson, I.M., Sykes, B.D.
Assembly
cNTnC-cTnIA162H
Entity
1. cNTnC (polymer, Thiol state: all free), 89 monomers, 10062.23 Da Detail

MDDIYKAAVE QLTEEQKNEF KAAFDIFVLG AEDGCISTKE LGKVMRMLGQ NPTPEELQEM IDEVDEDGSG TVDFDEFLVM MVRCMKDDS


2. cTnIA162H (polymer, Thiol state: all free), 27 monomers, 3065.579 Da Detail

RRVRISADAM MQALLGARHK ESLDLRA


3. cNTnC-cTnIA162H, entity CA (non-polymer), 40.078 Da
Total weight
13167.888 Da
Max. entity weight
10062.23 Da
Entity Connection
metal coordination 8 Detail

IDTypeValue orderAtom ID 1Atom ID 2
1metal coordinationsing1:ASP65:OD13:CA1:CA
2metal coordinationsing1:GLU76:OE23:CA1:CA
3metal coordinationsing1:ASP67:OD23:CA1:CA
4metal coordinationsing1:GLU76:OE13:CA1:CA
5metal coordinationsing1:ASP65:OD23:CA1:CA
6metal coordinationsing1:SER69:OG3:CA1:CA
7metal coordinationsing1:ASP67:OD13:CA1:CA
8metal coordinationsing1:THR71:O3:CA1:CA

Source organism
Homo sapiens
Exptl. method
solution NMR
Refine. method
simulated annealing
Data set
assigned_chemical_shifts
Chem. Shift Complete
Sequence coverage: 97.4 %, Completeness: 70.2 %, Completeness (bb): 70.8 % Detail

Polymer type: polypeptide(L)

Total1H13C15N
All70.2 % (929 of 1324)85.8 % (593 of 691)49.0 % (251 of 512)70.2 % (85 of 121)
Backbone70.8 % (490 of 692)94.5 % (224 of 237)53.1 % (181 of 341)74.6 % (85 of 114)
Sidechain70.4 % (522 of 741)81.3 % (369 of 454)54.6 % (153 of 280) 0.0 % (0 of 7)
Aromatic17.7 % (11 of 62)35.5 % (11 of 31) 0.0 % (0 of 31)
Methyl72.5 % (87 of 120)96.7 % (58 of 60)48.3 % (29 of 60)

1. cNTnC

MDDIYKAAVE QLTEEQKNEF KAAFDIFVLG AEDGCISTKE LGKVMRMLGQ NPTPEELQEM IDEVDEDGSG TVDFDEFLVM MVRCMKDDS

2. cTnIA162H

RRVRISADAM MQALLGARHK ESLDLRA

Sample #1

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 303 K, pH 6.1


#NameIsotope labelingTypeConcentration
1cNTnC[U-15N]0.9 mM
2cTnIA162Hnatural abundance3.6 mM
3Calciumnatural abundance10 mM
4imidazolenatural abundance10 mM
5DSS[U-2H]0.25 mM
6DTTnatural abundance10 mM
7Potassium chloridenatural abundance100 mM
Sample #2

Solvent system 95% H2O/5% D2O, Pressure 1 atm, Temperature 303 K, pH 6.1


#NameIsotope labelingTypeConcentration
8cNTnC[U-13C; U-15N]0.9 mM
9cTnIA162Hnatural abundance3.6 mM
10Calciumnatural abundance10 mM
11imidazolenatural abundance10 mM
12DSS[U-2H]0.25 mM
13DTTnatural abundance10 mM
14Potassium chloridenatural abundance100 mM
Sample #3

Solvent system 100% D2O, Pressure 1 atm, Temperature 303 K, pH 6.1


#NameIsotope labelingTypeConcentration
15cNTnC[U-13C; U-15N]0.9 mM
16cTnIA162Hnatural abundance3.6 mM
17Calciumnatural abundance10 mM
18imidazolenatural abundance10 mM
19DSS[U-2H]0.25 mM
20DTTnatural abundance10 mM
21Potassium chloridenatural abundance100 mM
Sample #4

Solvent system 100% D2O, Pressure 1 atm, Temperature 303 K, pH 6.1


#NameIsotope labelingTypeConcentration
22cNTnC[U-15N]0.9 mM
23cTnIA162Hnatural abundance3.6 mM
24Calciumnatural abundance10 mM
25imidazolenatural abundance10 mM
26DSS[U-2H]0.25 mM
27DTTnatural abundance10 mM
28Potassium chloridenatural abundance100 mM

Protein Blocks Logo
Calculated from 20 models in PDB: 2MZP, Strand ID: C, I Detail


Release date
2015-05-31
Citation
Structure and Dynamics of the Acidosis-Resistant A162H Mutant of the Switch Region of Troponin I Bound to the Regulatory Domain of Troponin C
Pineda Sanabria, S.E., Robertson, I.M., Sykes, B.D.
Biochemistry (2015), 54, 3583-3593, PubMed 25996354 , DOI 10.1021/acs.biochem.5b00178 ,
Entries sharing articles BMRB: 1 entries Detail
  BMRB: 25511 released on 2016-06-29
    Title Structure and dynamics of the acidosis-resistant a162H mutant of the switch region of troponin I bound to the regulatory domain of troponin C
Related entities 1. cNTnC, : 3 : 96 entities Detail
Related entities 2. cTnIA162H, : 1 : 11 : 41 entities Detail
Interaction partners 2. cTnIA162H, : 18 interactors Detail
Experiments performed 15 experiments Detail
NMR combined restraints 3 contents Detail
Keywords Protein/peptide, acidosis, contraction enhancenment, contraction regulation, troponin