792551
H-4-(7-Hydroxy-4-coumarinyl)-Abu-OH
98% (HPLC)
Synonym(s):
(S)-2-Amino-4-(7-hydroxy-2-oxo-2H-chromen-4-yl)butanoic acid, Schultz Fluorescent UAA
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About This Item
Empirical Formula (Hill Notation):
C13H13NO5
Molecular Weight:
263.25
UNSPSC Code:
12352111
NACRES:
NA.22
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Quality Level
Assay
98% (HPLC)
form
solid
optical activity
[α]22/D +8.0°, c = 0.5% in 1 M NaOH
mp
276-281 °C
storage temp.
15-25°C
Application
The courmarin-based unnatural amino acid is an effective fluorophore; which has been incoporated into several studies of protein interactions.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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Douglas D Young et al.
Bioorganic & medicinal chemistry letters, 21(24), 7502-7504 (2011-11-02)
The site-specific incorporation of unnatural amino acids (UAAs) into proteins in bacteria is made possible by the evolution of aminoacyl-tRNA synthetases that selectively recognize and aminoacylate the amino acid of interest. Recently we have discovered that some of the previously
Jiangyun Wang et al.
Journal of the American Chemical Society, 128(27), 8738-8739 (2006-07-06)
The fluorescent amino acid l-(7-hydroxycoumarin-4-yl) ethylglycine 1 has been genetically encoded in E. coli in response to the amber TAG codon. Because of its high fluorescence quantum yield, relatively large Stoke's shift, and sensitivity to both pH and polarity, this
Ishu Saraogi et al.
Journal of the American Chemical Society, 133(38), 14936-14939 (2011-08-30)
As newly synthesized proteins emerge from the ribosome, they interact with a variety of cotranslational cellular machineries that facilitate their proper folding, maturation, and localization. These interactions are essential for proper function of the cell, and the ability to study
Timo Koopmans et al.
Bioorganic & medicinal chemistry, 21(2), 553-559 (2012-12-15)
Incorporation of the unnatural amino acid L-(7-hydroxycoumarin-4-yl)ethylglycine (7-HC) is a powerful and reliable approach for the preparation of fluorescently labeled proteins. The growing popularity of this valuable amino acid prompted us to pursue an improved protocol for its synthetic preparation.
Shengxi Chen et al.
Journal of the American Chemical Society, 135(35), 12924-12927 (2013-08-15)
Two fluorescent amino acids, including the novel fluorescent species 4-biphenyl-l-phenylalanine (1), have been incorporated at positions 17 and 115 of dihydrofolate reductase (DHFR) to enable a study of conformational changes associated with inhibitor binding. Unlike most studies involving fluorescently labeled
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