The Etched1 gene of Zea mays (L.) encodes a zinc ribbon protein that belongs to the transcriptionally active chromosome (TAC) of plastids and is similar to the transcription factor TFIIS.
da Costa e Silva O, Lorbiecke R, Garg P, Müller L, Wassmann M, Lauert P, Scanlon M, Hsia AP, Schnable PS, Krupinska K, et al. Plant J. 2004 Jun; 38(6):923-39.