In plants, this domain plays a role in auxin-transport, plant growth and development [1,2] and appears to be expressed by all cells in the plant as well as in plastids. The family has been shown to play a role in vitamin B6 photo-protection and homoeostasis in plants [3].

1: ROOT UV-B SENSITIVE2 acts with ROOT UV-B SENSITIVE1 in a root ultraviolet B-sensing pathway. Leasure CD, Tong H, Yuen G, Hou X, Sun X, He ZH; Plant Physiol. 2009;150:1902-1915. PMID:19515790

2: Arabidopsis ROOT UVB SENSITIVE2/WEAK AUXIN RESPONSE1 is required for polar auxin transport. Ge L, Peer W, Robert S, Swarup R, Ye S, Prigge M, Cohen JD, Friml J, Murphy A, Tang D, Estelle M; Plant Cell. 2010;22:1749-1761. PMID:20562234

3: root uv-b sensitive mutants are suppressed by specific mutations in ASPARTATE AMINOTRANSFERASE2 and by exogenous vitamin B6. Leasure CD, Tong HY, Hou XW, Shelton A, Minton M, Esquerra R, Roje S, Hellmann H, He ZH; Mol Plant. 2011;4:759-770. PMID:21511809