Anti-HOXB9 Antibody Picoband®

Homeobox protein Hox-B9 is a protein that in humans is encoded by the HOXB9 gene. This gene is a member of the Abd-B homeobox family and encodes a protein with a homeobox DNA-binding domain. It is included in a cluster of homeobox B genes located on chromosome 17. The encoded nuclear protein functions as a sequence-specific transcription factor that is involved in cell proliferation and differentiation. Increased expression of this gene is associated with some cases of leukemia, prostate cancer and lung cancer.

N-alpha-acetyltransferase 15, NatA auxiliary subunit; Gastric cancer antigen Ga19; N-terminal acetyltransferase; NMDA receptor-regulated protein 1; Protein tubedown-1; Tbdn100; NAA15; GA19, NARG1, NATH, TBDN100

Expressed at high levels in testis and in ocular endothelial cells. Also found in brain (corpus callosum), heart, colon, bone marrow and at lower levels in most adult tissues, including thyroid, liver, pancreas, mammary and salivary glands, lung, ovary, urogenital system and upper gastrointestinal tract. Overexpressed in gastric cancer, in papillary thyroid carcinomas and in a Burkitt lymphoma cell line (Daudi) . Specifically suppressed in abnormal proliferating blood vessels in eyes of patients with proliferative diabetic retinopathy. .

Cancer, Cancer Susceptibility, Cardiovascular, Domain Families, Epigenetics and Nuclear Signaling, Hlh/Leucine Zipper, Hypertrophy, Immunology, Innate Immunity, Oncoproteins, Oncoproteins/Suppressors, Proto-Oncogenes, TLR Signaling, Transcription, Transcription Factors

Auxillary subunit of the N-terminal acetyltransferase A (NatA) complex which displays alpha (N-terminal) acetyltransferase activity. The NAT activity may be important for vascular, hematopoietic and neuronal growth and development. Required to control retinal neovascularization in adult ocular endothelial cells. In complex with XRCC6 and XRCC5 (Ku80), up-regulates transcription from the osteocalcin promoter. .

1. Chiba, N., Comaills, V., Shiotani, B., Takahashi, F., Shimada, T., Tajima, K., Winokur, D., Hayashida, T., Willers, H., Brachtel, E., Vivanco, M. M., Haber, D. A., Zou, L., Maheswaran, S. Homeobox B9 induces epithelial-to-mesenchymal transition-associated radioresistance by accelerating DNA damage responses. Proc. Nat. Acad. Sci. 109: 2760-2765, 2012. 2. Hayashida, T., Takahashi, F., Chiba, N., Brachtel, E., Takahashi, M., Godin-Heymann, N., Gross, K. W., Vivanco, M. M., Wijendran, V., Shioda, T., Sgroi, D., Donahoe, P. K., Maheswaran, S. HOXB9, a gene overexpressed in breast cancer, promotes tumorigenicity and lung metastasis. Proc. Nat. Acad. Sci. 107: 1100-1105, 2010. 3. Nagel, S., Burek, C., Venturini, L., Scherr, M., Quentmeier, H., Meyer, C., Rosenwald, A., Drexler, H. G., MacLeod, R. A. F. Comprehensive analysis of homeobox genes in Hodgkin lymphoma cell lines identifies dysregulated expression of HOXB9 mediated via ERK5 signaling and BMI1. Blood 109: 3015-3023, 2007.

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.

Cytoplasm. Nucleus. Mainly cytoplasmic, nuclear in some cases. Present in the free cytosolic and cytoskeleton-bound polysomes, but not in the membrane-bound polysomes.