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Article

SPA1, a WD-repeat protein specific to phytochrome A signal transduction.

Science (New York, N.Y.) - 16 Apr 1999

Hoecker U, Tepperman J M, Quail P H

Abstract excerpt

The five members of the phytochrome photoreceptor family of Arabidopsis thaliana control morphogenesis differentially in response to light. Genetic analysis has identified a signaling pathway that is specifically activated by phytochrome A. A component in this pathway, SPA1 (for "suppressor of phyA-105"), functions in repression of photomorphogenesis and is required for normal photosensory specificity of...

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Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

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Source

Identifiers

PMID: 10205059
DOI: 10.1126/science.284.5413.496

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-07.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

Related research

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Click a neighbor to travelStep 1 · 12 closest

SPA1, a WD-repeat protein specific to phytochrome A signal transduction.PMID 10205059Read ↗

The SPA1-like proteins SPA3 and SPA4 repress photomorphogenesis in the light.Semantic proximity Read ↗

The phytochrome A-specific signaling intermediate SPA1 interacts directly with COP1, a constitutive repressor of light signaling in Arabidopsis.Semantic proximity Read ↗

SPA1: a new genetic locus involved in phytochrome A-specific signal transduction.Semantic proximity Read ↗

The SPA quartet: a family of WD-repeat proteins with a central role in suppression of photomorphogenesis in arabidopsis.Semantic proximity Read ↗

The Arabidopsis SPA1 gene is required for circadian clock function and photoperiodic flowering.Semantic proximity Read ↗

Arabidopsis phytochrome B promotes SPA1 nuclear accumulation to repress photomorphogenesis under far-red light.Semantic proximity Read ↗

Mutations in the N-terminal kinase-like domain of the repressor of photomorphogenesis SPA1 severely impair SPA1 function but not light responsiveness in Arabidopsis.Semantic proximity Read ↗

The negatively acting factors EID1 and SPA1 have distinct functions in phytochrome A-specific light signaling.Semantic proximity Read ↗

Photoreceptor Specificity in the Light-Induced and COP1-Mediated Rapid Degradation of the Repressor of Photomorphogenesis SPA2 in Arabidopsis.Semantic proximity Read ↗

Arabidopsis CULLIN4-damaged DNA binding protein 1 interacts with CONSTITUTIVELY PHOTOMORPHOGENIC1-SUPPRESSOR OF PHYA complexes to regulate photomorphogenesis and flowering time.Semantic proximity Read ↗

Light and the E3 ubiquitin ligase COP1/SPA control the protein stability of the MYB transcription factors PAP1 and PAP2 involved in anthocyanin accumulation in Arabidopsis.Semantic proximity Read ↗

PAT1, a new member of the GRAS family, is involved in phytochrome A signal transduction.Semantic proximity Read ↗

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