Anti-PHF21B Antibody Picoband®

PHF21B (PHD finger protein 21B), also known as PHF4, is a 531 amino acid protein that contains one PHD-type zinc finger and is expressed as multiple alternatively spliced isoforms. The gene encoding PHF21B maps to human chromosome 22, which houses over 500 genes and is the second smallest human chromosome. Mutations in several of the genes that map to chromosome 22 are involved in the development of Phelan-McDermid syndrome, neurofibromatosis type 2, autism and schizophrenia.

Required for DNA double-strand breaks (DSBs) formation in unsynapsed regions during meiotic recombination. Probably acts by forming a complex with MEI4 and REC114, which activates DSBs formation in unsynapsed regions, an essential step to ensure completion of synapsis. Not required for HORMAD1 functions in pairing-independent synaptonemal complex formation, ATR recruitment to unsynapsed axes, meiotic silencing of unsynapsed chromatin (MSUC) or meiotic surveillance.

1. Bergamo, N. A., da Silva Veiga, L. C., dos Reis, P. P., Nishimoto, I. N., Magrin, J., Kowalski, L. P., Squire, J. A., Rogatto, S. R. Classic and molecular cytogenetic analyses reveal chromosomal gains and losses correlated with survival in head and neck cancer patients. Clin. Cancer Res. 11: 621-631, 2005. 2. Bertonha, F. B., Barros Filho, M. deC., Kuasne, H., dos Reis, P. P., da Costa Prando, E., Munoz, J. J. A. M., Roffe, M., Hajj, G. N. M., Kowalski, L. P., Rainho, C. A., Rogatto, S. R. PHF21B as a candidate tumor suppressor gene in head and neck squamous cell carcinomas. Molec. Oncol. 9: 450-462, 2015. 3. Reis, P. P., Rogatto, S. R., Kowalski, L. P., Nishimoto, I. N., Montovani, J. C., Corpus, G., Squire, J. A., Kamel-Reid, S. Quantitative real-time PCR identifies a critical region of deletion on 22q13 related to prognosis in oral cancer. Oncogene 21: 6480-6487, 2002.

Store at -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freeze-thaw cycles.