Isolation and identification of proteins binding to the major breakpoint region(mbr) of bcl2 gene
Nan Yang
Yujie Sun
Changyan Ma
摘要：Objective: We have previously found that mbr is a regulatory element of the bcl2 gene. The objective of this study is to isolate and identify the proteins binding to the 37 mbr in the 3 '-end of the mbr. Methods: Streptavidin magnetic particles were ligated to concatameric oligonucleofides of 37 mbr and incubated with the nuclear extracts of Jurkat cells. The DNA-binding proteins were eluted and then resolved by SDS-PAGE. After silver staining, the protein bands were excised and subjected to MALDI-TOF MS. Results: Several protein bands were detected after the isolation with magnetic particles, and Splicing factor, proline-and glutamine-rich(SFPQ), Poly(ADP-ribose)polymerase I(PARP), and promyelocytic leukemia protein(PML) were identified by MALDI-TOF MS. Conclusion: Several proteins were isolated and identified from the 37 mbr-protein complex. Results of this study establish a foundation for further study of the mechanisms by which mbr executes its regulatory function.
机标关键词：regionmajoridentification ofmbrmagnetic particlespromyelocytic leukemia proteinMALDI-TOFstudy
分类号：R5(内科学)
资助基金：国家自然科学基金(30500585)the Natural Science Foundation of Jiangsu Province(BK2008450)
论文发表日期：2009-01-01
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：5( 236-240 )
英文信息