Modification of tryptophan 108 in lysozyme by 2-nitro-4-carboxyphenylsulfenyl chloride
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منابع مشابه
4-Nitro-N-phthalyl-l-tryptophan
THE CRYSTAL STRUCTURE OF THE TITLE COMPOUND [SYSTEMATIC NAME: (2R)-3-(1H-indol-3-yl)-2-(4-nitro-1,3-dioxoisoindolin-2-yl)propanoic acid], C(19)H(13)N(3)O(6), an analogue of epigenetic modulator RG108, is constrained by strong hydrogen bonds between the indole N-H group and a carbonyl O atom of the phthalimide ring of a symmetry-related mol-ecule, and between the protonated O atom of the carboxy...
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In the title compound, C(12)H(10)N(2)O(3), the oxygen atom bridging the two aromatic rings is in a synperiplanar (+sp) conformation. The dihedral angle between the aromatic rings is 71.40 (12)°. In the crystal, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds.
متن کاملTryptophan fluorescence lifetimes in lysozyme.
Tryptophan fluorescence lifetimes at pH 2 and pH 8 have been obtained for lysozyme and for lysozyme derivatives in which tryptophan-62 or tryptophan-108 or both are nonfluorescent. The lifetimes range from about 0.5 ns to 2.8 ns for the various emitting tryptophans. The tryptophan lifetimes appear to increase with exposure of tryptophan to solvent, but intramolecular contacts, probably with cys...
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The title compound, C(14)H(10)F(3)NO(3), was prepared by a palladium-catalysed Suzuki-Miyaura coupling reaction. The dihedral angle between the nitro group and its parent benzene ring is 66.85 (19)° while the dihedral angle between the two benzene rings is 49.98 (9)°. The CF(3) group is disordered over two sets of sites with occupancies of 0.457 (8) and 0.543 (8).
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Two series (a and b) of N- substituted heteroaromatic compounds related to clotrimazole were synthesized. Imidazole ring of the clotrimazole was replaced by 2-methylimidazole in series a, and by 2-methyl-4-nitroimidazole in series b. O-cholortrityl moiety of clotrimazole was also replaced by trityl, mono or dimethoxy trityl. Chemical structures...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 1972
ISSN: 0014-5793
DOI: 10.1016/0014-5793(72)80182-0