MBTPS1 Monoclonal Antibody

Code CSB-MA617930A0m
Size US$210
Order now
  • Western Blot
    Positive WB detected in: U251 whole cell lysate, Hela whole cell lysate, A549 whole cell lysate, K562 whole cell lysate, HepG2 whole cell lysate, MCF-7 whole cell lysate, Jurkat whole cell lysate
    All lanes: MBTPS1 antibody at 1:1000
    Goat polyclonal to mouse IgG at 1/50000 dilution
    Predicted band size: 117 kDa
    Observed band size: 117 KDa
    Exposure time:5min
  • Overlay Peak curve showing Hela cells stained with CSB-MA617930A0m (red line) at 1:100. The cells were incubated in 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (1µg/1*106cells) for 1h at 4°C. The secondary antibody used was FITC-conjugated Goat Anti-Mouse IgG(H+L) at 1/100 dilution for 30min at 4°C. Isotype control antibody (green line) was mouse IgG1 (1µg/1*106cells) used under the same conditions. Acquisition of >10,000 events was performed.
Have Questions? Leave a Message or Start an on-line Chat

Product Details

Full Product Name
Mouse anti-Homo sapiens (Human) MBTPS1 Monoclonal Antibody antibody
Uniprot No.
Target Names
Alternative Names
Membrane-bound transcription factor site-1 protease (EC (Endopeptidase S1P) (Subtilisin/kexin-isozyme 1) (SKI-1), MBTPS1, KIAA0091 S1P SKI1
Raised in
Species Reactivity
Recombinant Human Membrane-bound transcription factor site-1 protease protein (187-400aa)
Immunogen Species
Homo sapiens (Human)
Monoclonal Antibody
Clone No.
Purification Method
>95%, Protein G purified
It differs from different batches. Please contact us to confirm it.
Preservative: 0.03% Proclin 300
Constituents: 50% Glycerol, 0.01M PBS, pH 7.4
Tested Applications
Recommended Dilution
Application Recommended Dilution
WB 1:1000-1:5000
FC 1:50-1:200
Troubleshooting and FAQs
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

Mice were immunized with the recombinant human MBTPS1 protein (187-400aa), and B cells were isolated from their spleens. These B cells were then fused with myeloma cells to generate hybridomas. After screening and selecting, the MBTPS1 antibody-secreting hybridomas were identified and then cultured to obtain the MBTPS1 monoclonal antibody. The MBTPS1 monoclonal antibody is highly specific for human MBTPS1 protein and can be used in three applications including ELISA, WB, and FC. This antibody is purified using protein G affinity chromatography and has a purity of over 95%.

MBTPS1, also known as Site-1 protease (S1P), is important for maintaining lipid homeostasis in cells. It plays a crucial role in regulating the processing of a variety of transmembrane proteins in the endoplasmic reticulum (ER), including SREBP (sterol regulatory element-binding protein) transcription factors, which are key regulators of cholesterol and fatty acid metabolism.

Customer Reviews and Q&A

 Customer Reviews

There are currently no reviews for this product.

Submit a Review here

Target Background

Serine protease that cleaves after hydrophobic or small residues, provided that Arg or Lys is in position P4: known substrates are SREBF1/SREBP1, SREBF2/SREBP2, BDNF, GNPTAB, ATF6 and ATF6B. Cleaves substrates after Arg-Ser-Val-Leu (SREBP2), Arg-His-Leu-Leu (ATF6), Arg-Gly-Leu-Thr (BDNF) and its own propeptide after Arg-Arg-Leu-Leu. Catalyzes the first step in the proteolytic activation of the sterol regulatory element-binding proteins (SREBPs) SREBF1/SREBP1 and SREBF2/SREBP2. Also mediates the first step in the proteolytic activation of the cyclic AMP-dependent transcription factor ATF-6 (ATF6 and ATF6B). Mediates the protein cleavage of GNPTAB into subunit alpha and beta, thereby participating in biogenesis of lysosomes. Involved in the regulation of M6P-dependent Golgi-to-lysosome trafficking of lysosomal enzymes. It is required for the activation of CREB3L2/BBF2H7, a transcriptional activator of MIA3/TANGO and other genes controlling mega vesicle formation. Therefore, it plays a key role in the regulation of mega vesicle-mediated collagen trafficking.
Gene References into Functions
  1. rs11642644 associated with facial profile PMID: 29301965
  2. In the absence of S1P, the catalytically inactive alpha/beta-subunit precursor of GlcNAc-1-phosphotransferase fails to be activated and results in missorting of newly synthesized lysosomal enzymes, and lysosomal accumulation of non-degraded material, which are biochemical features of defective GlcNAc-1-phosphotransferase subunits and the associated pediatric lysosomal diseases mucolipidosis type II and III. PMID: 28693924
  3. Results suggest that (pro)renin receptor (s(P)RR) is generated by sequential processing by site-1 protease (S1P) and furin protein. PMID: 28013223
  4. primordial SKI-1/S1P likely contained a simpler prodomain consisting of the highly conserved AB fragment that represents an independent folding unit PMID: 26645686
  5. S1P substrate-dependent regulatory mechanisms for lipid synthesis and biogenesis of lysosomes are different PMID: 26108224
  6. The interaction between S1P and C5a plays an important role in neutrophils for antineutrophil cytoplasmic antibody -mediated activation PMID: 25000985
  7. Incompletely matured forms of SKI-1/S1P further process cellular and viral substrates in distinct subcellular compartments. PMID: 25378398
  8. We show that SKI-1 is constitutively expressed in human pigment cells with higher SKI activity in seven out of eight melanoma cell lines compared with normal melanocytes. PMID: 23884247
  9. Diabetic high-density lipoprotein carries higher levels of S1P compared with normal high-density lipoprotein. PMID: 23360427
  10. Y285 of SKI-1 is crucial for the efficient processing of envelope glycoproteins from Old World and clade C New World arenavirus. PMID: 23536681
  11. The role of MBTPS1 (SKI-1/S1P) peptides in cancer and approaches used to inhibit SKI-1/S1P were studied. PMID: 21568902
  12. study found that the N-acetylglucosamine-1-phosphotransferase alpha/beta-subunit precursor is cleaved by S1P that activates sterol regulatory element-binding proteins in response to cholesterol deprivation; S1P functions in the biogenesis of lysosomes PMID: 21719679
  13. S1P has a role in reducing the size of the luminal domain to prepare ATF6 to be an optimal S2P substrate PMID: 15299016
  14. enzymatic activity of S1P is not calcium dependent, but can be modulated by a variety of mono- and divalent cations. S1P displayed pronounced positive cooperativity with a substrate derived from the viral coat glycoprotein of the lassa virus. PMID: 16973377
  15. SKI-1/S1P inhibition resulted in reduced cholesterol synthesis and mRNA levels of the rate-limiting enzymes, HMG-CoA reductase and squalene epoxidase, in the cholesterol synthetic pathway. PMID: 17867930
  16. Complementation of SKI-1/S1P-deficient cells with a SKI-1/S1P expression vector restored release of infectious Crimean-Congo hemorrhagic fever virus (>106 PFU/ml), confirming that SKI-1/S1P processing is required for incorporation of viral glycoproteins. PMID: 17898072
  17. Site 1 protease is required for proteolytic processing of the glycoproteins of the South American hemorrhagic fever viruses Junin, Machupo, and Guanarito. PMID: 18400865

Show More

Hide All

Subcellular Location
Endoplasmic reticulum membrane; Single-pass type I membrane protein. Golgi apparatus membrane; Single-pass type I membrane protein.
Protein Families
Peptidase S8 family
Tissue Specificity
Widely expressed.
Database Links

HGNC: 15456

OMIM: 603355

KEGG: hsa:8720

STRING: 9606.ENSP00000344223

UniGene: Hs.75890

icon of phone
Call us
301-363-4651 (Available 9 a.m. to 5 p.m. CST from Monday to Friday)
icon of address
7505 Fannin St., Ste 610, Room 322 (CUBIO Innovation Center), Houston, TX 77054, USA
icon of social media
Join us with

Subscribe newsletter

Leave a message

* To protect against spam, please pass the CAPTCHA test below.
CAPTCHA verification
© 2007-2024 CUSABIO TECHNOLOGY LLC All rights reserved. 鄂ICP备15011166号-1
Place an order now

I. Product details


II. Contact details


III. Ship To


IV. Bill To