Anti-ST13 Antibody Picoband®

Hsc70-interacting protein also known as suppression of tumorigenicity 13 (ST13) is a protein that in humans is encoded by the ST13 gene. The protein encoded by this gene is an adaptor protein that mediates the association of the heat shock proteins HSP70 and HSP90. This protein has been shown to be involved in the assembly process of glucocorticoid receptor, which requires the assistance of multiple molecular chaperones. The expression of this gene is reported to be downregulated in colorectal carcinoma tissue suggesting that it is a candidate tumor suppressor gene. Alternative splicing results in multiple transcript variants encoding different isoforms.

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. Cao, J., Cai, X., Zheng, L., Geng, L., Shi, Z., Pao, C. C., Zheng, S. Characterization of colorectal-cancer-related cDNA clones obtained by subtractive hybridization screening. J. Cancer Res. Clin. Oncol. 123: 447-451, 1997. 2. Hohfeld, J., Minami, Y., Hartl, F.-U. Hip, a novel cochaperone involved in the eukaryotic Hsc70/Hsp40 reaction cycle. Cell 83: 589-598, 1995. 3. Howarth, J. L., Glover, C. P. J., Uney, J. B. HSP70 interacting protein prevents the accumulation of inclusions in polyglutamine disease. J. Neurochem. 108: 945-951, 2009.

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 freezing and thawing.

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