The members of the zinc fingers and homeoboxes gene family are nuclear homodimeric transcriptional repressors that interact with the A subunit of nuclear factor-Y (NF-YA) and contain two C2H2-type zinc fingers and five homeobox DNA-binding domains. This gene encodes member 2 of this gene family. In addition to forming homodimers, this protein heterodimerizes with member 1 of the zinc fingers and homeoboxes family. Acts as a transcriptional repressor. Represses the promoter activity of the CDC25C gene stimulated by NFYA. May play a role in retinal development where it regulates the composition of bipolar cell populations, by promoting differentiation of bipolar OFF-type cells (By similarity). In the brain, may promote maintenance and suppress differentiation of neural progenitor cells in the developing cortex.
Background References
1. Kawata H., Yamada K., Shou Z., Mizutani T., Yazawa T., Yoshino M., Sekiguchi T., Kajitani T., Miyamoto K. Zinc-fingers and homeoboxes (ZHX) 2, a novel member of the ZHX family, functions as a transcriptional repressor. Biochem. J. 373:747-757 (2003)
Immunocytochemistry analysis of MCF7 (positive) and AGS (negative) labeling ZHX2 with Rabbit anti-ZHX2 antibody (HA721886) at 1/100 dilution.
Cells were fixed in 4% paraformaldehyde for 20 minutes at room temperature, permeabilized with 0.1% Triton X-100 in PBS for 5 minutes at room temperature, then blocked with 1% BSA in 10% negative goat serum for 1 hour at room temperature. Cells were then incubated with Rabbit anti-ZHX2 antibody (HA721886) at 1/100 dilution in 1% BSA in PBST overnight at 4 ℃. Goat Anti-Rabbit IgG H&L (iFluor™ 488, HA1121) was used as the secondary antibody at 1/1,000 dilution. PBS instead of the primary antibody was used as the secondary antibody only control. Nuclear DNA was labelled in blue with DAPI.
Western blot analysis of ZHX2 on different lysates with Rabbit anti-ZHX2 antibody (HA721886) at 1/1,000 dilution.
Lane 1: Neuro-2a cell lysate Lane 2: COS-1 cell lysate Lane 3: HeLa cell lysate Lane 4: C6 cell lysate Lane 5: PC-12 cell lysate Lane 6: NIH/3T3 cell lysate Lane 7: AGS cell lysate (negative)
Lysates/proteins at 20 µg/Lane. Exposure time: 3 minutes; ECL: K1801
Blocking: 5% NFDM/TBST, 1 hour at room temperature Primary antibody: HA721886, 1/1,000 in 5% NFDM/TBST, overnight at 4 ℃ Secondary antibody: Goat anti-Rabbit IgG-HRP (HA1001), 1/50,000 in 5% NFDM/TBST, 1 hour at room temperature
Predicted band size: 92 kDa Observed band size: 110 kDa
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