6LIX:
reference: The Arabidopsis CRUMPLED LEAF protein, a homolog of the cyanobacterial bilin lyase, retains the bilin-binding pocket for a yet unknown function., Wang F, Fang J, Guan K, Luo S, Dogra V, Li B, Ma D, Zhao X, Lee KP, Sun P, Xin J, Liu T, Xing W, Kim C, Plant J. 2020 Aug 29. doi: 10.1111/tpj.14974. PMID: 32860438

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