Journal
NATURE CHEMICAL BIOLOGY
Volume 4, Issue 5, Pages 287-289Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nchembio.82
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Human telomerase is a ribonucleoprotein that is minimally comprised of protein (hTERT) and RNA (hTR) components. We have applied single-molecule fluorescence two-color coincidence detection to characterize complex formation between fluorophore-labeled components in solution. By systematic labeling and in vitro assembly of hTERT, hTR and telomerase's DNA substrate, we have established that catalytically functional human telomerase comprises a stable hTERT: hTR: substrate interaction in a 1:1:1 absolute stoichiometry.
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