HMGB1: Roles in base excision repair and related function

作者：Liu Yuan; Prasad Rajendra; Wilson Samuel H^*

来源：Biochimica et Biophysica Acta-Gene Regulatory Mechanisms, 2010, 1799(1-2): 119-130.

DOI：10.1016/j.bbagrm.2009.11.008

• HMGB1
• DNA binding
• DNA bending
• Base excision repair
• AP endonuclease
• FEN1
• Trinucleotide repeat expansion

High mobility group box 1 (HMGB1) is a nonhistone architectural protein that is involved in many biological processes including chromatin remodeling, transcription, cell signaling of inflammation, DNA damage repair and others. Recent studies have identified the cross-link of HMGB1 with a DNA base excision repair intermediate indicating that this Protein is involved in base excision repair (BER) pathway. Further characterization of the roles of HMGB1 in BER demonstrates that the protein acts as a cofactor to regulate BER sub-pathways by inhibiting single-nucleotide BER and stimulating long-patch BER through modulating the activities of base excision repair enzymes. Directing of base lesion repair to the long-patch sub-pathway can result in trinucleotide repeat instability suggesting an important role of HMGB1 in modulating genome stability. Published by Elsevier B.V.

• 出版日期2010-2
• 单位NIH