4N0T:
reference: Core structure of the U6 small nuclear ribonucleoprotein at 1.7-A resolution., Montemayor EJ, Curran EC, Liao HH, Andrews KL, Treba CN, Butcher SE, Brow DA, Nat Struct Mol Biol. 2014 Jun;21(6):544-51. doi: 10.1038/nsmb.2832. Epub 2014 May, 18. PMID: 24837192

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