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Methods Mol Biol 2022 Jan 01;2444:243-269. doi: 10.1007/978-1-0716-2063-2_15.
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Purification and Characterization of Human DNA Ligase IIIα Complexes After Expression in Insect Cells.

Rashid I , Tsai MS , Sverzhinsky A , Hlaing AS , Shih B , Thwin AC , Lin JG , Maw SS , Pascal JM , Tomkinson AE .

With improvements in biophysical approaches, there is growing interest in characterizing large, flexible multi-protein complexes. The use of recombinant baculoviruses to express heterologous genes in cultured insect cells has advantages for the expression of human protein complexes because of the ease of co-expressing multiple proteins in insect cells and the presence of a conserved post-translational machinery that introduces many of the same modifications found in human cells. Here we describe the preparation of recombinant baculoviruses expressing DNA ligase IIIα, XRCC1, and TDP1, their subsequent co-expression in cultured insect cells, the purification of complexes containing DNA ligase IIIα from insect cell lysates, and their characterization by multi-angle light scattering linked to size exclusion chromatography and negative stain electron microscopy.

PubMed ID: 35290642
PMC ID: PMC9278544
Article link: Methods Mol Biol
Grant support: [+]

Genes referenced: tdp1 xrcc1

References [+] :
Abdella, Structure of the human Mediator-bound transcription preinitiation complex. 2021, Pubmed