Publication Date:
2001-02-13
Description:
Cryptochromes and phytochromes are the major photosensory receptors in plants and often regulate similar photomorphogenic responses. The molecular mechanisms underlying functional interactions of cryptochromes and phytochromes remain largely unclear. We have identified an Arabidopsis photomorphogenic mutant, sub1, which exhibits hypersensitive responses to blue light and far-red light. Genetic analyses indicate that SUB1 functions as a component of a cryptochrome signaling pathway and as a modulator of a phytochrome signaling pathway. The SUB1 gene encodes a Ca2+-binding protein that suppresses light-dependent accumulation of the transcription factor HY5.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Guo, H -- Mockler, T -- Duong, H -- Lin, C -- GM 56265/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2001 Jan 19;291(5503):487-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11161203" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Motifs
;
Amino Acid Sequence
;
Arabidopsis/genetics/growth & development/*metabolism
;
*Arabidopsis Proteins
;
Basic-Leucine Zipper Transcription Factors
;
Calcium-Binding Proteins/chemistry/genetics/*metabolism
;
Cryptochromes
;
Darkness
;
*Drosophila Proteins
;
Epistasis, Genetic
;
*Eye Proteins
;
Flavoproteins/*metabolism
;
Gene Expression Regulation, Plant
;
Genes, Plant
;
Light
;
Molecular Sequence Data
;
Mutation
;
Nuclear Proteins/metabolism
;
Phenotype
;
*Photoreceptor Cells, Invertebrate
;
Phytochrome/*metabolism
;
Phytochrome A
;
Plant Proteins/chemistry/genetics/*metabolism
;
Receptors, G-Protein-Coupled
;
Recombinant Fusion Proteins/metabolism
;
Sequence Alignment
;
*Signal Transduction
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
