Abstract:
:3-Fluorotyrosine fluorescence is quenched effectively by phosphate ions not only by a dynamic but also by a static mechanism owing to H-bond complex formation in ground state. 3-Fluorotyrosine pKa values both in the ground and first excited state (8.3 and 4, respectively) are appreciably lower than those of tyrosine, thus promoting 3-fluorotyrosinate ion formation in the excited state. Additional emission owing to 3-fluorotyrosinate ion (near 350 nm) may be taken erroneously for tryptophan fluorescence.
journal_name
Amino Acidsjournal_title
Amino acidsauthors
Vdovenko SI,Kolycheva MT,Gerus II,Kukhar VPdoi
10.1007/BF00805830subject
Has Abstractpub_date
1993-10-01 00:00:00pages
303-6issue
3eissn
0939-4451issn
1438-2199journal_volume
4pub_type
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