Description_x000D_ General description_x000D_ Signal peptide peptidase-like 2B (SPPL2B, IMP4, PSL1), a homologue of signal peptidase, is a GxGD aspartyl protease that catalyzes regulated intra-membrane proteolysis of type II membrane-anchored signaling factors. SPPL2b catabolizes signaling substrates such as TNFα and Bri2._x000D_ Specificity_x000D_ Anti-SPPL2B polyclonal antibody reacts with human, mouse, rat, chicken, and bovine signal peptide peptidase-like 2B proteins._x000D_ Immunogen_x000D_ Synthetic peptide directed towards the N terminal region of human SPPL2B_x000D_ Application_x000D_ Anti-SPPL2B polyclonal antibody is used to tag signal peptide peptidase-like 2B for detection and quantitation by Western blotting and in plasma by immunohistochemical (IHC) techniques. It is used as a probe to determine the roles of signal peptide peptidase-like 2B as a cell signal regulator by mediating the intra-membrane proteolysis of membrane-anchored signaling factors._x000D_ Physical form_x000D_ Purified antibody supplied in 1x PBS buffer with 0.09% (w/v) sodium azide and 2% sucrose._x000D_ Disclaimer_x000D_ Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals._x000D_ Biochem/physiol Actions_x000D_ SPPL2B is a member of the GXGD family of aspartic proteases. The GXGD proteases are transmembrane proteins with two conserved catalytic motifs localized within the membrane-spanning regions. This enzyme localizes to endosomes, lysosomes, and the plasma membrane. It cleaves the transmembrane domain of tumor necrosis factor alpha to release the intracellular domain, which triggers cytokine expression in the innate and adaptive immunity pathways._x000D_ Sequence_x000D_ Synthetic peptide located within the following region: VARGNCTFYEKVRLAQGSGARGLLIVSRERLVPPGGNKTQYDEIGIPVAL