Manipulating the levels of CRY2 and UBP12 and UBP13 proteins in Arabidopsis thaliana plants affects growth. The first plant from the left shows normal growth. The second plant is missing CRY2 and grew too much. The third plant lacked UBP12 and UBP13 and grew shorter. The fourth plant had high levels of UBP12 and UBP13, and the fifth had high levels of CRY2.