Start2Fold

The database of hydrogen/deuterium exchange data on protein folding and stability

Entry STF0036

Redesigned apo-cytochrome b562

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Protein information

Name of the protein: Soluble cytochrome b562
Organism: Escherichia coli
Number of residues: 106
Related UniProt entry:   P0ABE7 (Fragment: 23 - 128)
Related PDB entry:   1YYX

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Experiment sets

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STRONG

Method: Native exchange NMR

Conditions: pH 7.0; 25.0 Celsius; Probes: 33

Related publication:
 PMID 12069590

Experiment details: "The exchange reaction was initiated by dissolving protein samples with deuterated amide protons in an exchanging solution using a spin column filled with G25 Sephadex and preequilibrated with exchanging buffer (50 mM NaAc-d, 95% H2O, and 5% D2O). The deuterated Rd-apocyt b562 protein was prepared by dissolving proteins in D2O (pD 7.0, 0.1 M Na2PO4) and heated at 60 °C for more than 30 min. 15N-1H HSQC spectra were recorded using a 500 MHz instrument. Protein concentrations are 2 mM. The peak intensity as a function of time was measured and fitted to single-exponential kinetics to obtain the exchange rate constant."

Protection threshold: ΔGu =~9.6 kcal/mol

Sequence: ADLEDNWETLNDNLKVIEKADNAAQVKDALTKMRAAALDAQKATPPKLEDKSPDSPEMKDFRHGFDILVGQIDDALKLANEGKVKEAQAAAEQLKTTIRAYNQKYG
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STRONG residues

26: V; 27: K; 28: D; 29: A; 32: K; 35: A; 40: A; 70: G; 71: Q; 75: A; 77: K; 79: A; 80: N; 81: E; 83: K; 87: A; 88: Q; 89: A; 94: L;
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MEDIUM

Method: Native exchange NMR

Conditions: pH 7.0; 25.0 Celsius; Probes: 33

Related publication:
 PMID 12069590

Experiment details: "The exchange reaction was initiated by dissolving protein samples with deuterated amide protons in an exchanging solution using a spin column filled with G25 Sephadex and preequilibrated with exchanging buffer (50 mM NaAc-d, 95% H2O, and 5% D2O). The deuterated Rd-apocyt b562 protein was prepared by dissolving proteins in D2O (pD 7.0, 0.1 M Na2PO4) and heated at 60 °C for more than 30 min. 15N-1H HSQC spectra were recorded using a 500 MHz instrument. Protein concentrations are 2 mM. The peak intensity as a function of time was measured and fitted to single-exponential kinetics to obtain the exchange rate constant."

Protection threshold: ΔGu =~6.5 kcal/mol

Sequence: ADLEDNWETLNDNLKVIEKADNAAQVKDALTKMRAAALDAQKATPPKLEDKSPDSPEMKDFRHGFDILVGQIDDALKLANEGKVKEAQAAAEQLKTTIRAYNQKYG
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MEDIUM residues

95: K; 98: I; 99: R; 100: A; 101: Y; 106: G;
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WEAK

Method: Native exchange NMR

Conditions: pH 7.0; 25.0 Celsius; Probes: 33

Related publication:
 PMID 12069590

Experiment details: "The exchange reaction was initiated by dissolving protein samples with deuterated amide protons in an exchanging solution using a spin column filled with G25 Sephadex and preequilibrated with exchanging buffer (50 mM NaAc-d, 95% H2O, and 5% D2O). The deuterated Rd-apocyt b562 protein was prepared by dissolving proteins in D2O (pD 7.0, 0.1 M Na2PO4) and heated at 60 °C for more than 30 min. 15N-1H HSQC spectra were recorded using a 500 MHz instrument. Protein concentrations are 2 mM. The peak intensity as a function of time was measured and fitted to single-exponential kinetics to obtain the exchange rate constant."

Protection threshold: ΔGu =~4.5 kcal/mol

Sequence: ADLEDNWETLNDNLKVIEKADNAAQVKDALTKMRAAALDAQKATPPKLEDKSPDSPEMKDFRHGFDILVGQIDDALKLANEGKVKEAQAAAEQLKTTIRAYNQKYG
 CLICK TO DOWNLOAD SEQUENCE IN FASTA

WEAK residues

8: E; 9: T; 10: L; 14: L; 16: V; 18: E; 65: F; 66: D;
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