The Bloom’s syndrome helicase BLM functions as a homodimer within the Bloom’s complex
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ABSTRACT: Homologous recombination (HR) is an essential and highly regulated cellular process. Unintended HR in somatic cells is potentially deleterious; it can result in translocations and/or somatic cell loss of heterozygosity. This is suppressed by the BLM protein in combination with topoisomerase III, RMI1 and RMI2 in a hetero-tetrameric complex (the ‘Bloom’s complex’). To understand how the activities of BLM helicase and topoisomerase III are coupled, we purified the four-subunit complex. Chemical crosslinking and mass spectrometry revealed a unique architecture that couples helicase and topoisomerase domains.
INSTRUMENT(S): LTQ Orbitrap Velos
ORGANISM(S): Homo Sapiens (human)
DISEASE(S): Bloom Syndrome
SUBMITTER: Jason Low
LAB HEAD: Andrew J Deans
PROVIDER: PXD011078 | Pride | 2022-01-17
REPOSITORIES: Pride
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