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Nuclear localization and protein sequence similarities suggested that the SPT2 / SIN1 protein may be related to the nonhistone chromosomal protein HMG1 .
 SPT2, SIN1, nonhistone chromosomal protein HMG1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 SPT2, SIN1, nonhistone chromosomal protein HMG1