Thermodynamic and structural consequences of changing a sulfur atom to a methylene group in the M13Nle mutation in ribonuclease-S.
Thermodynamic and structural consequences of changing a sulfur atom to a methylene group in the M13Nle mutation in ribonuclease-S.
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在核糖核酸酶-S 的 M13Nle 突变中将硫原子改变为亚甲基的热力学和结构后果。
DOI:
10.1021/bi00194a025
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发表时间:
1994
期刊:
影响因子:
2.9
通讯作者:
Richards,FM
中科院分区:
文献类型:
--
作者:
Thomson,J;Ratnaparkhi,GS;Varadarajan,R;Sturtevant,JM;Richards,FM
MATERIALS AND METHODSMaterials. RNase-S was obtained from Sigma. S-protein was purified from RNase-S either by the method of Doscher and Hirs (1967) or by reverse-phase FPLC on a Cis column using a 0-40% acetonitrile gradient with 0.1% TFA. Bak-erbond prepscale Cis resin was obtained from J. T. Baker. M13Nle is a C-terminal amidated S-peptide analog in which Met 13 of the 15-residue truncated version of S-peptide was substituted by norleucine. This peptide was obtained from Multiple Peptide Systems Inc.(San Diego, CA). The crude peptide was purified by reverse-phase HPLC on a Vydak Cn column using a water/acetonitrile gradient containing 0.1% TFA. The samples were lyophilized 2-3 times from water to remove any traces of the solvent components. The low heats of dilution observed in the titration calorimetric experiments suggested that there were no residual solvent components. Purified S-protein and the peptide were lyophilized and stored at-20 C. The concentration of stock peptide solutions was determined by quantitative amino acid analysis at Yale University Medical School Protein and Nucleic Acid Chem-istry Facility prior to lyophilization as described earlier (Connelly et al., 1990).
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DOI:
10.1016/0005-2744(73)90062-4
发表时间:
1973
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
S. Marklund
通讯作者:
S. Marklund
影响因子:
3.9
作者:
H. Jouve;J. Pelmont;J. Gaillard
通讯作者:
J. Gaillard
影响因子:
3.9
作者:
A. Deisseroth;A. L. Dounce
通讯作者:
A. L. Dounce
影响因子:
3.9
作者:
INADA, Y;SHIBATA, K;KUROZUMI, T
通讯作者:
KUROZUMI, T
DOI:
10.1080/00327488108065539
发表时间:
1981
期刊:
Preparative biochemistry
影响因子:
--
作者:
A. L. Dounce;G. Mourtzikos
通讯作者:
G. Mourtzikos