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BH3-Only Protein Detection Kit, BioAssay(TM)

Cat no: B1087-08

Supplier: United States Biological
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Apoptosis plays a major role in normal organism development, tissue homeostasis, and removal of damaged cells (1). This process is regulated by the interplay of pro- and anti-apoptotic members of the B-cell lymphoma 2 (Bcl-2) family (2). The BH3-only (Bcl-2-homology domain 3 only) proteins are a pro-apoptotic subgroup of the Bcl-2 family that are critical initiators of lymphocyte apoptosis and other processes (3). Unlike the other members of the Bcl-2 family which contain at least two Bcl-2 homology (BH) domains, these proteins contain just one, the BH3 domain. Some of the members of this family, such as Hrk, may show little sequence homology to the others (4), but all BH-only proteins can bind to at least some pro-survival Bcl-2-like proteins through this BH3 domain and trigger apoptosis when overexpressed (5). For example, the proteins Bad, Bim and Bmf regulate apoptosis by forming heterodimers with the anti-apoptotic proteins Bcl-2 and Bcl-xL (6-8). Bim, Noxa, and PUMA are activated by p53 following DNA damage although the exact mechanisms are not entirely clear (9-11). Noxa may also be involved with the activation of Bik, a BH3-only protein whose localization in the endoplasmic reticulum (ER) suggests that Bik may play a role in ER-stress-induced apoptosis (12). While full-length Bid also promotes apoptosis when expressed, its activity is enhanced following cleavage by enzymes such as capsase-8, suggesting that Bid may play a key role in death-receptor induced apoptosis (13). Kit Components: Bad Antibody (50ug). Bid Antibody (CT) (50ug). Bik Antibody (50ug). Bim Antibody (IN) (50ug). Bmf Antibody (NT) (50ug). Hrk Antibody (50ug). Noxa Antibody (50ug). PUMA Antibody (CT) (50ug). Source: Rabbit polyclonal antibodies were raised against peptides corresponding to amino acid sequences from each of the corresponding proteins. Applications: These polyclonal antibodies can be used for detection of Bad, Bid, Bik, Bim, Bmf, Hrk, Noxa and PUMA by immunoblot at 1-2ug/ml and can detect their respective proteins via immunohistochemistry at 1-10ug/ml. Storage and Stability: May be stored at 4 degrees C for short-term only. For long-term storage, store at -20 degrees C. Aliquots are stable for at least 6 months at -20 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
Catalogue number: B1087-08
Applications: Western Blot
Size: 1Kit
Form: Supplied as a liquid in PBS, 0.02% sodium azide.
Purity: Purified by immunoaffinity chromatography.
References: 1. Lockshin RA, Osborne B, and Zakeri Z. Cell death in the third millennium. Cell Death Differ. 2000; 7:2-7. 2. Cory S, Huang DCS, and Adams JM. The Bcl-2 family: roles in cell survival and oncogenesis. Oncogene 2003; 22:8590-607. 3. Strasser A. The role of BH3-only proteins in the immune systems. Nat. Rev. 2005; 5:189-200. 4. Inohara N, Ding L, Chen S, et al. harakiri, a novel regulator of cell death, encodes a protein that activates apoptosis and interacts selectively with survival-promoting proteins Bcl-2 and Bcl-XL. EMBO J. 1997; 16:1686-94. 5. Huang DCS and Strasser A. BH3-only proteins

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