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PHOTOBLEACHING
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DeCS
Descriptor
English
:
Photobleaching
Descriptor
Spanish
:
Fotoblanqueo
Descriptor
Portuguese
:
Fotodegradação
Tree Number:
G02.740.680
Definition
English
:
Light-induced change in a chromophore, resulting in the loss of its
absorption
of light of a particular wave length. The photon
energy
causes a conformational change in the photoreceptor
proteins
affecting PHOTOTRANSDUCTION. This occurs naturally in the
retina
(
ADAPTATION
, OCULAR) on long exposure to bright light.
Photobleaching
presents problems when occurring in PHOTODYNAMIC THERAPY, and in
FLUORESCENCE
MICROSCOPY
. On the other hand, this phenomenon is exploited in the technique,
FLUORESCENCE RECOVERY AFTER PHOTOBLEACHING
, allowing measurement of the
movements
of
proteins
and
LIPIDS
in the
CELL MEMBRANE.
History Note
English
:
2003
Allowable Qualifiers
English
:
DE
drug effects
RE
radiation effects
Record Number:
37671
Unique Identifier:
D038761
Occurrence in VHL
:
Similar:
DeCS