XIAP Active human
SIGMA/SRP0230 - recombinant, expressed in baculovirus infected insect cells, ≥65% (SDS-PAGE)
Synonym: API3; BIRC4; IAP3; Baculoviral IAP repeat-containing protein 4 (BIRC4); E3 ubiquitin-protein ligase XIAP (MIHA); IAP-like protein (ILP1); Inhibitor of apoptosis protein 3; X-linked inhibitor of apoptosis
Product Type: Chemical
SDS-PAGE XIAP: Cat. No. SRP0230: Coomassie blue-stained SDS-PAGE analysis of XIAP
Chart XIAP: Cat. No. SRP0230: Activity Assay of XIAP
| assay | ≥65% (SDS-PAGE) |
| biological source | human |
| form | aqueous solution |
| mol wt | 57 kDa |
| NCBI accession no. | NM_001167   |
| packaging | pkg of 20 μg |
| recombinant | expressed in baculovirus infected insect cells |
| shipped in | dry ice |
| storage condition | avoid repeated freeze/thaw cycles |
| storage temp. | −70°C |
| UniProt accession no. | P98170 |
| Application: | Useful in conjunction with E1 and E2 for the study of enzyme kinetics, screening inhibitors, and selectivity profiling. |
| Biochem/physiol Actions: | XIAP (X-linked inhibitor of apoptosis) is the most potent caspase-interacting protein and inhibits both intrinsic and extrinsic pathways of apoptosis. Its up-regulation in tumor cells is linked with resistance to chemotherapy. In inflammatory breast cancer (IBC) this protein is linked with resistance to antibody-dependent cellular cytotoxicity (ADCC) driven by cetuximab and trastuzumab. Embelin, an inhibitor of XIAP, functions as an anti-tumor agent in myeloma cell line (HL-60) by suppressing the expression of XIAP. Elevated expression of XIAP in rectal cancer is associated with chemotherapy resistance. |
| General description: | XIAP (X-linked inhibitor of apoptosis) is an anti-apoptotic protein belonging to the inhibitor of apoptosis protein (IAP) family, an evolutionary conserved protein family. XIAP contains three tandem copies of BIR (baculovirusIAP repeat) domain, which is composed of ∼70 residues. IAP family members also contain a RING (really interesting new gene) zinc finger domain in their C-terminals. |
| Physical form: | Formulated in 25 mM Tris-HCl, pH 8.0, 100 mM NaCl, 0.05% Tween-20, 100 μg/ml FLAG peptide, 20% glycerol, and 3 mM DTT. |
| Preparation Note: | Thaw on ice. Upon first thaw, briefly spin tube containing enzyme to recover full content of the tube. Aliquot enzyme into single use aliquots. Store remaining undiluted enzyme in aliquots at -70°C. Note: Enzyme is very sensitive to freeze/thaw cycles. |
| Unit Definition: | One unit is defined as the amount of enzyme required to transfer 1 pmol of ubiquitin to substrate/min at 37°C. |
| Purity | ≥65% (SDS-PAGE) |
| Storage Temp. | −70°C |
| UNSPSC | 12352200 |