A single-stranded telomere binding protein in the nematode Caenorhabditis elegans

Soo Young Yi, Kyu Sang Joeng, Jai Uk Kweon, Jin Won Cho, In Kwon Chung, Junho Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We identified and characterized a protein (STB-1) from the nuclear extract of Caenorhabditis elegans that specifically binds single-stranded telomere DNA sequences, but not the corresponding RNA sequences. STB-1 binding activity is specific to the nematode telomere, but not to the human or plant telomere. STB-1 requires the core nucleotides of GCTTAGG and three spacer nucleotides in front of them for binding. While any single nucleotide change in the core sequence abolishes binding, the spacer nucleotides tolerate substitution. STB-1 was determined to be a basic protein of 45 kDa by Southwestern analyses. STB-1 forms a stable complex with DNA once bound to the telomere.

Original languageEnglish
Pages (from-to)301-306
Number of pages6
JournalFEBS Letters
Issue number2
Publication statusPublished - 2001 Sept 14

Bibliographical note

Funding Information:
We thank M.S. Choi and lab members for critical reading and advice. This work was supported by Korea Research Foundation Grant KRF-2000-2-0821 to I.K.C. and J.H.L.

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Genetics
  • Cell Biology


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