PIF5 (Phytochrome interacting factor 5) is a transcription factor which acts negatively in the phytochrome B signaling pathway and regulates PHYB at post-transcriptional level. Alternative protein names: AtbHLH65, bHLH65, bHLH065, Basic helix-loop-helix protein 65, PHYTOCHROME INTERACTING FACTORAS12 2112 3-LIKE 6, PIL6, Phytochrome interacting factor-like 6, Transcription factor EN 103.
