Multifunctional protein with various roles in different cellular compartments. May act in a redox sensitive manner. Associates with chromatin and binds DNA with a preference for non-canonical DNA structures such as single-stranded DNA. Can bend DNA and enhance DNA flexibility by looping thus providing a mechanism to promote activities on various gene promoters. Proposed to be involved in the innate immune response to nucleic acids by acting as a cytoplasmic promiscuous immunogenic DNA/RNA sensor. Negatively regulates B-cell and myeloid cell differentiation. In hematopoietic stem cells may regulate the balance between self-renewal and differentiation. Involved in negative regulation of canonical Wnt signaling.
Background References
1. Zhou X et al. Overexpression of HMGB3 and its prognostic value in breast cancer. Front Oncol. 2022 Dec
2. Ma H et al. HMGB3 promotes PARP inhibitor resistance through interacting with PARP1 in ovarian cancer. Cell Death Dis. 2022 Mar
Western blot analysis of HMGB3 on different lysates with Rabbit anti-HMGB3 antibody (HA722033) at 1/1,000 dilution.
Lane 1: HeLa cell lysate Lane 2: 293T cell lysate Lane 3: MCF7 cell lysate Lane 4: Jurkat cell lysate
Lysates/proteins at 20 µg/Lane.
Predicted band size: 23 kDa Observed band size: 23 kDa
Exposure time: 50 seconds;
4-20% SDS-PAGE gel.
Proteins were transferred to a PVDF membrane and blocked with 5% NFDM/TBST for 1 hour at room temperature. The primary antibody (HA722033) at 1/1,000 dilution was used in 5% NFDM/TBST at 4℃ overnight. Goat Anti-Rabbit IgG - HRP Secondary Antibody (HA1001) at 1/50,000 dilution was used for 1 hour at room temperature.
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