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Yeast U1 snRNP therefore contains 16 different proteins , including seven snRNP core proteins , three homologues of the metazoan U1 snRNP - specific proteins , and six yeast - specific U1 snRNP proteins .
 Yeast U1 snRNP, snRNP core proteins, metazoan U1 snRNP - specific proteins, yeast - specific U1 snRNP proteins
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 Yeast U1 snRNP, snRNP core proteins, metazoan U1 snRNP - specific proteins, yeast - specific U1 snRNP proteins