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Signal peptide peptidase-like 2B (SPPL2b) Antibody (Center) Blocking peptide

Synthetic peptide

Product Information
Primary Accession Q8TCT7
Clone Names 2092804
Additional Information
Gene ID 56928
Other Names Signal peptide peptidase-like 2B, SPP-like 2B, SPPL2b, 3423-, Intramembrane protease 4, IMP-4, Presenilin homologous protein 4, PSH4, Presenilin-like protein 1, SPPL2B, IMP4, KIAA1532, PSL1
Target/Specificity The synthetic peptide sequence used to generate the antibody AP6312b was selected from the Center region of human SPPL2b. A 10 to 100 fold molar excess to antibody is recommended. Precise conditions should be optimized for a particular assay.
Format The synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml deionized water for a final concentration of 1 mg/ml.
StorageMaintain refrigerated at 2-8°C for up to 6 months. For long term storage store at -20°C.
PrecautionsThis product is for research use only. Not for use in diagnostic or therapeutic procedures.
Protein Information
Name SPP2B
Function Intramembrane-cleaving aspartic protease (I-CLiP) that cleaves type II membrane signal peptides in the hydrophobic plane of the membrane. Functions in ITM2B and TNF processing (PubMed:16829952, PubMed:16829951, PubMed:17965014, PubMed:19114711, PubMed:22194595). Catalyzes the intramembrane cleavage of the anchored fragment of shed TNF-alpha (TNF), which promotes the release of the intracellular domain (ICD) for signaling to the nucleus (PubMed:16829952, PubMed:16829951). May play a role in the regulation of innate and adaptive immunity (PubMed:16829952). Catalyzes the intramembrane cleavage of the simian foamy virus processed leader peptide gp18 of the envelope glycoprotein gp130 dependently of prior ectodomain shedding by furin or furin-like proprotein convertase (PC)-mediated cleavage proteolysis (PubMed:23132852).
Cellular Location Cell membrane; Multi-pass membrane protein. Golgi apparatus membrane; Multi-pass membrane protein. Lysosome membrane; Multi-pass membrane protein. Endosome membrane; Multi-pass membrane protein. Membrane; Multi-pass membrane protein; Lumenal side Note=targeted through the entire secretory pathway to endosomes/lysosomes (PubMed:15998642)
Tissue Location Expressed predominantly in adrenal cortex and mammary gland.
Research Areas
Citations (0)

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Signal peptide peptidase (SPP) is an aspartyl protease that mediates clearance of signal peptides by proteolysis within the endoplasmic reticulum (ER). Like presenilins, SPP contains a critical GXGD motif in its C-terminal catalytic center. Several presenilin homologues/SPP-like proteins (PSHs/SPPL) have been identified. Unlike the ER localization of SPP and other SPPL proteins, SPPL2b is targeted through the secretory pathway to endosomes/lysosomes.


Friedmann, E., et al., J. Biol. Chem. 279(49):50790-50798 (2004).Grigorenko, A.P., et al., Biochemistry Mosc. 67(7):826-835 (2002).Weihofen, A., et al., Science 296(5576):2215-2218 (2002).

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$ 80.00
Cat# BP6312b
Availability: In Stock
Bulk Size
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