312653
Halocin transcripts are leaderless and the translated preproteins or preproproteins are most likely exported using the twin arginine translocation ( Tat ) pathway , as the Tat signal motif ( two adjacent arginine residues ) is present within the amino terminus .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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