PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10982442-1 2000 The npq1 Arabidopsis mutant is deficient in the violaxanthin de-epoxidase enzyme that converts violaxanthin to zeaxanthin in excess light (xanthophyll cycle). Zeaxanthins 111-121 non-photochemical quenching 1 Arabidopsis thaliana 4-8