In the new paper published by Zhimin Lu, Ph.D. it writes "We show here that PKM2, but not PKM1, binds to the spindle checkpoint protein Bub3 during mitosis and phosphorylates Bub3 at Y207." I would like to try it with bub3 207 antibody. Where to find the high quality antibody?

Checked with Genentec?

Do you mean the Reference:PKM2 Regulates Chromosome Segregation and Mitosis Progression of Tumor Cells?

Every reference has "Materials" sector.

I find Materials from the paper. Cited below:
"Rabbit polyclonal antibodies recognizing Bub3, phospho-Bub3 Y207, PKM1,
PKM2, and phosphohistone H3-S10 were obtained from Signalway Antibody
(College Park)."