The K-box region is commonly found associated with SRF-type transcription factors see Pfam:PF00319. The K-box is a possible coiled-coil structure [2]. Possible role in multimer formation [1].

1: Function and regulation of the Arabidopsis floral homeotic gene PISTILLATA. Goto K, Meyerowitz EM Genes Dev 1994;8:1548-1560. PMID:7958839

2: Predicting coiled coils from protein sequences. Lupas A, Van Dyke M, Stock J Science 1991;252:1162-1164. PMID:2031185