Human RAD52 Exhibits Two Modes of Self-association

Wasantha Ranatunga, Doba Jackson, Janice A. Lloyd, Anthony L. Forget, Kendall L. Knight, Gloria E.O. Borgstahl

Research output: Contribution to journalArticlepeer-review

55 Scopus citations


The human RAD52 protein plays an important role in the earliest stages of chromosomal double-strand break repair via the homologous recombination pathway. Individual subunits of RAD52 self-associate into rings that can then form higher order complexes. RAD52 binds to double-strand DNA ends, and recent studies suggest that the higher order self-association of the rings promotes DNA end-joining. Earlier studies defined the self-association domain of RAD52 to a unique region in the N-terminal half of the protein. Here we show that there are in fact two experimentally separable self-association domains in RAD52. The N-terminal self-association domain mediates the assembly of monomers into rings, and the previously unidentified domain in the C-terminal half of the protein mediates higher order self-association of the rings.

Original languageEnglish (US)
Pages (from-to)15876-15880
Number of pages5
JournalJournal of Biological Chemistry
Issue number19
StatePublished - May 11 2001
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Molecular Biology
  • Cell Biology


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