Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5639
pubmed:dateCreated
2003-9-12
pubmed:abstractText
Phototropins are light-activated kinases important for plant responses to blue light. Light initiates signaling in these proteins by generating a covalent protein-flavin mononucleotide (FMN) adduct within sensory Per-ARNT-Sim (PAS) domains. We characterized the light-dependent changes of a phototropin PAS domain by solution nuclear magnetic resonance spectroscopy and found that an alpha helix located outside the canonical domain plays a key role in this activation process. Although this helix associates with the PAS core in the dark, photoinduced changes in the domain structure disrupt this interaction. We propose that this mechanism couples light-dependent bond formation to kinase activation and identifies a signaling pathway conserved among PAS domains.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1095-9203
pubmed:author
pubmed:issnType
Electronic
pubmed:day
12
pubmed:volume
301
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1541-4
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed-meshheading:12970567-Amino Acid Sequence, pubmed-meshheading:12970567-Avena sativa, pubmed-meshheading:12970567-Cryptochromes, pubmed-meshheading:12970567-Darkness, pubmed-meshheading:12970567-Drosophila Proteins, pubmed-meshheading:12970567-Eye Proteins, pubmed-meshheading:12970567-Flavoproteins, pubmed-meshheading:12970567-Light, pubmed-meshheading:12970567-Models, Molecular, pubmed-meshheading:12970567-Molecular Sequence Data, pubmed-meshheading:12970567-Nuclear Magnetic Resonance, Biomolecular, pubmed-meshheading:12970567-Photoreceptor Cells, Invertebrate, pubmed-meshheading:12970567-Protein Conformation, pubmed-meshheading:12970567-Protein Structure, Secondary, pubmed-meshheading:12970567-Protein Structure, Tertiary, pubmed-meshheading:12970567-Receptors, G-Protein-Coupled, pubmed-meshheading:12970567-Signal Transduction
pubmed:year
2003
pubmed:articleTitle
Structural basis of a phototropin light switch.
pubmed:affiliation
Departments of Biochemistry and Pharmacology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-9038, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't