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F7376

Sigma-Aldrich

4-Fluoro-DL-tryptophan

crystalline

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About This Item

Empirical Formula (Hill Notation):
C11H11FN2O2
CAS Number:
Molecular Weight:
222.22
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.26

Assay

≥98.0% (TLC)

form

crystalline

technique(s)

NMR: suitable

color

off-white

storage temp.

−20°C

SMILES string

NC(Cc1c[nH]c2cccc(F)c12)C(O)=O

InChI

1S/C11H11FN2O2/c12-7-2-1-3-9-10(7)6(5-14-9)4-8(13)11(15)16/h1-3,5,8,14H,4,13H2,(H,15,16)

InChI key

DEBQMEYEKKWIKC-UHFFFAOYSA-N

Biochem/physiol Actions

4-Fluoro-DL-tryptophan (4-F-TRP) is used to label bacterial arginyl-tRNA synthetases for conformational analysis and to label myoglobins and hemoglobins for NMR spectra analysis.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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Q S Zhang et al.
Journal of protein chemistry, 18(2), 187-192 (1999-05-20)
Escherichia coli 4-fluorotryptophan-substituted arginyl-tRNA synthetase was biosynthetically prepared and purified from a tryptophan auxotroph which could overproduce this enzyme. A method was developed to separate 4-fluorotryptophan from tryptophan and to determine accurately their contents in the 4-fluorotryptophan-containing proteins. It was
P M Bronskill et al.
The Biochemical journal, 249(1), 305-308 (1988-01-01)
The tryptophan-auxotrophic Bacillus subtilis LC33 mutant strain utilizes either tryptophan or 4-fluorotryptophan for growth. Proteins therefore could be isolated from these cells in either tryptophan-containing or 4-fluorotryptophan-containing forms. Since 4-fluorotryptophan is non-fluorescent, tryptophan fluorescence would be suppressed in the 4-fluorotryptophan-containing
P Soumillion et al.
Biochemistry, 37(7), 1819-1827 (1998-03-04)
Clamp proteins confer processivity to the DNA polymerase during DNA replication. These oligomeric proteins are loaded onto DNA by clamp loader protein complexes in an ATP-dependent manner. The mechanism by which the trimeric bacteriophage T4 clamp protein (the 45 protein)
J M Bacher et al.
Journal of bacteriology, 183(18), 5414-5425 (2001-08-22)
Escherichia coli isolates that were tolerant of incorporation of high proportions of 4-fluorotryptophan were evolved by serial growth. The resultant strain still preferred tryptophan for growth but showed improved growth relative to the parental strain on other tryptophan analogues. Evolved
B Delagoutte et al.
The EMBO journal, 19(21), 5599-5610 (2000-11-04)
The 2.2 A crystal structure of a ternary complex formed by yeast arginyl-tRNA synthetase and its cognate tRNA(Arg) in the presence of the L-arginine substrate highlights new atomic features used for specific substrate recognition. This first example of an active

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