3U4Z:
reference: Structural basis for Tetrahymena telomerase processivity factor Teb1 binding to single-stranded telomeric-repeat DNA., Zeng Z, Min B, Huang J, Hong K, Yang Y, Collins K, Lei M, Proc Natl Acad Sci U S A. 2011 Dec 20;108(51):20357-61. Epub 2011 Dec 5. PMID: 22143754

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