4397
In addition to SP100 homology regions , one LYSP100 cDNA isoform contains a bromodomain and a PHD/TTC domain , which are present in a variety of transcriptional regulatory proteins .
 bromodomain, PHD/TTC domain, SP100, LYSP100, LYSP100 cDNA isoform, transcriptional regulatory proteins, SP100 homology regions
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:
 bromodomain, PHD/TTC domain, SP100, LYSP100, LYSP100 cDNA isoform, transcriptional regulatory proteins, SP100 homology regions