Recombinant Human Sulfhydryl oxidase 1(QSOX1)

Code CSB-CF019144HU
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Source in vitro E.coli expression system
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Product Details

Target Names QSOX1
Uniprot No. O00391
Alternative Names QSOX1; QSCN6; UNQ2520/PRO6013; Sulfhydryl oxidase 1; hQSOX; Quiescin Q6
Species Homo sapiens (Human)
Expression Region 30-747
Protein Length Full Length of Mature Protein
Tag Info The following tags are available.
N-terminal His-tagged
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
and FAQs
Protein FAQs
Storage Condition Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet Please contact us to get it.

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Target Background

Catalyzes the oxidation of sulfhydryl groups in peptide and protein thiols to disulfides with the reduction of oxygen to hydrogen peroxide. Plays a role in disulfide bond formation in a variety of extracellular proteins. In fibroblasts, required for normal incorporation of laminin into the extracellular matrix, and thereby for normal cell-cell adhesion and cell migration.
Gene References into Functions
  1. This study provides a key example of the effect of glycosylation on Golgi exit and contributes to an understanding of late secretory sorting and quality control. PMID: 29757379
  2. High QSOX1 expression correlates with tumor invasiveness PMID: 29804717
  3. High QSOX1 expression is a strong and independent factor of reduced survival in breast cancer and may represent a biomarker for aggressive disease and a potential treatment target PMID: 27562495
  4. Data indicate ebselen as an in vitro inhibitor of quiescin sulfhydryl oxidase 1 (QSOX1) enzymatic activity. PMID: 26158899
  5. QSOX1 immunoexpression was observed in the non-neoplastic cerebellum samples and the medulloblastoma samples PMID: 25908093
  6. High levels of QSOX1 RNA expression is associated with breast cancer. PMID: 23536962
  7. these studies suggest that QSOX1 is a predictive biomarker for luminal cancers and that it may be a useful target for elusive luminal B disease PMID: 23680167
  8. QSOX1 may be revealed as an important player in cancer detection and prognosis. Defining the mechanism(s) of QSOX1 activity in tumors and in in vivo models will provide important insights into how to target QSOX1 with anti-neoplastic agents. PMID: 24359107
  9. Examination of the unusual kinetics of QSOX1 toward cysteine and glutathione at low micromolar concentrations suggests that circulating QSOX1 is unlikely to significantly contribute to the oxidation of these monothiols in plasma PMID: 24468475
  10. QSOX1 may be involved in neuroblastoma differentiation and regression and may thus function as a biomarker for identifying risk groups for this neoplasm. PMID: 24704990
  11. QSOX1 is induced by hypoxic stimuli and identified that QSOX1 is a direct target of HIF-1. PMID: 24008827
  12. Data suggest that isoenzyme QSOX1A is secreted from mammalian cells despite transmembrane domain; QSOX1A is cleaved at internal sites and processed within Golgi apparatus to yield soluble enzyme that forms dimer upon cleavage of C-terminal domain. PMID: 23713614
  13. QSOX1 is a potential new prognostic marker which may prove of use in the staging of breast tumours and the stratification of breast cancer patients. PMID: 23460839
  14. QSOX1 activity was required for incorporation of laminin into the extracellular matrix (ECM) synthesized by fibroblasts, and ECM produced without QSOX1 was defective in supporting cell-matrix adhesion. PMID: 23704371
  15. crystal structure PMID: 22801504
  16. These results propose for the first time possible roles for QSOX1 in atherosclerosis. PMID: 22069028
  17. Taken together, our results suggest that the mechanism of QSOX1-mediated tumor cell invasion is by activation of MMP-2 and MMP-9. PMID: 21989104
  18. Data suggested that the C449-C452 motif was essential for the activity of human QSOX 1b; the C70-C73 motif was fundamental in electron transfer from thiol-containing substrate including reduced proteins, DTT, GSH. PMID: 21148546
  19. A partial QSOX1 crystal structure reveals a single-chain pseudo-dimer mimicking the quaternary structure of Erv enzymes. PMID: 20211621
  20. In the plasma peptidome of patients with ductal adenocarcinoma of the pancreas (DAP), a prominent peptide was identified from the QSOX1 parent protein. This peptide was present in 16 of 23 DAP patients and 4 of 5 patients with IPMN. PMID: 19795908
  21. Data show that the longer version of human QSOX1 protein (hQSOX1a) is a transmembrane protein localized primarily to the Golgi apparatus, and that hQSOX1a can act in vivo as an oxidase. PMID: 17331072
  22. internal redox steps studied by mutagenesis PMID: 18393449

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Subcellular Location [Isoform 1]: Golgi apparatus membrane; Single-pass membrane protein. Secreted.; [Isoform 2]: Secreted.
Protein Families Quiescin-sulfhydryl oxidase (QSOX) family
Tissue Specificity Expressed in heart, placenta, lung, liver, skeletal muscle, pancreas and very weakly in brain and kidney.
Database Links

HGNC: 9756

OMIM: 603120

KEGG: hsa:5768

STRING: 9606.ENSP00000356574

UniGene: Hs.744925

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