Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Jozef Kusba"'
Publikováno v:
Biopolymers. 70:595-603
Resonance energy transfer (RET) is typically limited to distances below 60 A, which can be too short for some biomedical assays. We examined a new method for increasing the RET distances by placing donor- and acceptor-labeled DNA oligomers between tw
Publikováno v:
Analytical Biochemistry. 315:160-169
We examined the effects of metallic silver particles on resonance energy transfer (RET) between fluorophores covalently bound to DNA. A coumarin donor and a Cy3 acceptor were positioned at opposite ends of a 23-bp double helical DNA oligomer. In the
Publikováno v:
Journal of Fluorescence. 12:439-447
We examined the photostability of a double-stranded DNA oligomer, covalently labeled with Cy3 or Cy5 on one strand, in the presence of metallic silver island films. In our experimental configuration a minor fraction of the labeled DNA was close to th
Publikováno v:
Scopus-Elsevier
We describe experimental observations of fluorescence quenching by time-delayed light pulses whose wavelength overlaps the emission spectrum of 4-(dimethylamino)-4′-cyanostilbene (DCS). The relative cross sections for light quenching were proportio
Autor:
Henryk Szmacinski, Wieslaw Wiczk, Joseph R. Lakowicz, Jozef Kusba, Ignacy Gryczynski, Gabor Laczko, Michael L. Johnson
Publikováno v:
Journal of Fluorescence. 1:163-176
We used gigahertz frequency-domain fluorometry to examine the tyrosyl fluorescence intensity and anisotropy decays of the single-tyrosine cyclic peptide hormones oxytocin and vasopressin. Acrylamide quenching and a distance-dependent quenching model
Autor:
Joseph R. Lakowicz, Ewald Terpetschnig, Jozef Kusba, Henryk Malak, Michael L. Johnson, Ignacy Gryczynski, Engin U. Akkaya, Henryk Szmacinski
Publikováno v:
SPIE Proceedings.
The Center for Fluorescence Spectroscopy (CFS) is a multi-user facility providing state of the art time-resolved fluorescence instrumentation and software for scientists, whose research can be enhanced by such experimental data. The CFS is a national
Publikováno v:
SPIE Proceedings.
We describe a method to improve the resolution of donor-to- acceptor distance distributions in molecules which are flexing on the timescale of the fluorescence lifetime. We measured the time- dependent donor decays of two donor (D)-acceptor (A) pairs
Publikováno v:
SPIE Proceedings.
Frequency-domain fluorometry was used to investigate the time- dependent intensity decays of N-acetyl-L-tryptophanamide (NATA) when collisionally quenched by acrylamide and iodide in propylene glycol at 20 degree(s)C. The intensity decays of NATA bec
Publikováno v:
SPIE Proceedings.
Recent experimental results from this laboratory have shown that fluorescence emission can be quenched by the light pulses from cavity-dumped dye lasers, a phenomenon we call `light quenching.' In this overview article we describe some of the possibl
Publikováno v:
SPIE Proceedings.
We have recently demonstrated that fluorescence emission can be quenched by laser light pulses from modern high-repetition rate lasers, a phenomenon we call 'light quenching'. We now describe some of the possible effects of light quenching on the tim