Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Phytochrome-interacting factors.

P H Quail1

  • 1Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA. quail@nature.berkeley.edu

Seminars in Cell & Developmental Biology
|January 9, 2001
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Particle-bound phytochrome: Spectral properties of bound and unbound fractions.

Planta·2014
Same author

In-vitro binding of phytochrome to a particulate fraction: A function of light dose and steady-state P fr level.

Planta·2014
Same author

Particle-bound phytochrome: Association with a ribonucleoprotein fraction from Cucurbita pepo L.

Planta·2014
Same author

Particle-bound phytochrome: The nature of the interaction between pigment and particulate fractions.

Planta·2014
Same author

Phytochrome and phosphotungstate-chromate-positive vesicles from Cucurbita pepo L.

Planta·2014
Same author

Examination of ribosome-like particles in isolated prolamellar bodies.

Planta·2014
Same journal

Editorial for special issue "When should mathematical models be used in biology".

Seminars in cell & developmental biology·2026
Same journal

Conserved machinery, divergent functions: evolutionary plasticity of the STK36/ULK4 kinase complex in ciliogenesis and signaling.

Seminars in cell & developmental biology·2026
Same journal

Chemical biology tools for studying tissue development.

Seminars in cell & developmental biology·2026
Same journal

Tetrahymena as a model organism for cilia research.

Seminars in cell & developmental biology·2026
Same journal

Emerging Concepts in Cardiovascular Development and Regeneration.

Seminars in cell & developmental biology·2026
Same journal

Endothelial origin of hematopoietic stem cells: Insights from new technologies and unresolved questions.

Seminars in cell & developmental biology·2026
See all related articles

Phytochrome photoreceptors sense light and signal to genes via nuclear translocation. These light-switchable proteins interact with transcription factors, instantly regulating gene expression.

Area of Science:

  • Plant biology
  • Molecular genetics
  • Biochemistry

Background:

  • Phytochrome photoreceptors mediate light signal transduction to nuclear genes through poorly understood pathways.
  • Environmental light cues regulate plant growth and development by influencing gene expression.

Purpose of the Study:

  • To elucidate the intracellular signaling pathways of phytochrome photoreceptors.
  • To identify novel protein interactions involved in light signal transduction.

Main Methods:

  • Yeast two-hybrid library screens were employed to identify interacting partners of phytochrome family members.
  • Investigated light-triggered translocation and DNA-binding activities of phytochrome.

Main Results:

Related Experiment Videos

  • Yeast two-hybrid screens revealed new components interacting with phytochromes, challenging previous signaling models.
  • Demonstrated light-dependent translocation of phytochrome from the cytoplasm to the nucleus.
  • Showed that active phytochrome binds to promoter-bound basic helix-loop-helix (bHLH) proteins.

    • Conclusions:

    • Phytochromes function as light-switchable components of transcriptional regulator complexes.
    • Phytochrome signaling provides a direct and rapid mechanism for targeting light signals to specific gene promoters.