NCBI Accession #
NP_001031000.1
NCBI GenBank Nucleotide #
NM_001035923.3
NCBI Official Full Name
non-photochemical quenching 1
NCBI Official Symbol
NPQ1
NCBI Official Synonym Symbols
ARABIDOPSIS VIOLAXANTHIN DE-EPOXIDASE 1; AVDE1; F22O13.3; F22O13_3; non-photochemical quenching 1; VIOLAXANTHIN DE-EPOXIDASE PRECURSOR
NCBI Protein Information
non-photochemical quenching 1
NCBI Summary
Violaxanthin deepoxidase involved in xanthophyll cycle.Two major consequences of the npq1 mutation are the absence of zeaxanthin formation in strong light and the partial inhibition of the quenching of singlet excited chlorophylls in the photosystem II light-harvesting complex
UniProt Synonym Gene Names
AtVxDE
UniProt Protein Name
Violaxanthin de-epoxidase, chloroplastic
UniProt Synonym Protein Names
Protein NON-PHOTOCHEMICAL QUENCHING 1
UniProt Primary Accession #
Q39249
UniProt Secondary Accession #
Q9SJD9
UniProt Related Accession #
Q39249
UniProt Comments
Part of the xanthophyll (or violaxanthin) cycle for controlling the concentration of zeaxanthin in chloroplasts. Catalyzes the two-step mono de-epoxidation reaction. Stereospecific for all-trans xanthophylls. Zeaxanthin induces the dissipation of excitation energy in the chlorophyll of the light-harvesting protein complex of photosystem II.