1025
The protein components of this complex are specifically competed by an AP1 consensus motif and were shown by supershift to include c-Jun and c-Fos , suggesting that this binding site is an AP1 motif and that the Jun and Fos families of transcription factors play a role in the regulation of the kappa light chain gene .
 c-Jun, c-Fos, transcription factors, binding site, kappa light chain gene, AP1 motif, AP1 consensus motif
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 c-Jun, c-Fos, transcription factors, binding site, kappa light chain gene, AP1 motif, AP1 consensus motif