Sequence-specific binding property of Arabidopsis thaliana telomeric DNA binding protein 1 (AtTBP1) - PubMed (original) (raw)

Sequence-specific binding property of Arabidopsis thaliana telomeric DNA binding protein 1 (AtTBP1)

M G Hwang et al. FEBS Lett. 2001.

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Abstract

We have identified an Arabidopsis thaliana cDNA, designated as AtTBP1, encoding a protein with a predicted size of 70.6 kDa that specifically binds to the plant telomeric repeat sequence TTTAGGG. AtTBP1 is present as a single-copy gene in Arabidopsis genome and is expressed ubiquitously in various organs. AtTBP1 has a single Myb telomeric DNA binding domain at the C-terminus and an extensive homology with other known telomere-binding proteins. The isolated C-terminus of AtTBP1 is capable of sequence-specific DNA binding to plant duplex telomeric DNA. These results suggest that AtTBP1 may play important roles in plant telomere function in vivo.

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