The Alfin family includes PHD finger protein Alfin1 and Alfin1-like proteins. Alfin1 is a histone-binding component that specifically recognises H3 tails trimethylated on 'Lys-4' (H3K4me3), which marks transcription start sites of virtually all active genes [1, 2].

1: Transgenic overexpression of the transcription factor alfin1 enhances expression of the endogenous MsPRP2 gene in alfalfa and improves salinity tolerance of the plants. Winicov I I, Bastola DR; Plant Physiol. 1999;120:473-480. PMID:10364398

2: Alfin1 transcription factor overexpression enhances plant root growth under normal and saline conditions and improves salt tolerance in alfalfa. Winicov I; Planta. 2000;210:416-422. PMID:10750899