NPQ4 (NONPHOTOCHEMICAL QUENCHING). Identical to Photosystem II 22 kDa protein, chloroplast precursor (PSBS) [Arabidopsis Thaliana] (GB:Q9XF91;GB:Q9ST34); similar to putative photosystem II protein [Gossypium hirsutum] (GB:ABO41853.1); similar to putative photosystem II protein [Gossypium raimondii] (GB:ABO41835.1); contains InterPro domain Chlorophyll A-B binding protein; (InterPro:IPR001344)