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Recombinant Human Serpin B5/Maspin Protein

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications PAGE
Format
Carrier-Free
Concentration
LYOPH

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Recombinant Human Serpin B5/Maspin Protein Summary

Description
A single non-glycosylated polypeptide chain containing 375 amino acid residues corresponding to Serpin B5/Maspin Source: E. coli

Uniprot ID: P36952

Amino Acid Sequence: MDALQLANSA FAVDLFKQLC EKEPLGNVLF SPICLSTSLS LAQVGAKGDT ANEIGQVLHF ENVKDIPFGF QTVTSDVNKL SSFYSLKLIK RLYVDKSLNL STEFISSTKR PYAKELETVD FKDKLEETKG QINNSIKDLT DGHFENILAD NSVNDQTKIL VVNAAYFVGK WMKKFPESET KECPFRLNKT DTKPVQMMNM EATFCMGNID SINCKIIELP FQNKHLSMFI LLPKDVEDES TGLEKIEKQL NSESLSQWTN PSTMANAKVK LSIPKFKVEK MIDPKACLEN LGLKHIFSED TSDFSGMSET KGVALSNVIH KVCLEITEDG GDSIEVPGAR ILQHKDELNA DHPFIYIIRH NKTRNIIFFG KFCSP

This lyophilized preparation is stable for 12 months from date of receipt at -20 to -70 degrees C, preferably desiccated. Upon reconstitution, the preparation can be stored for 1 month at 2-8 degrees C under sterile conditions, and for 3 months at -20 degrees C to -70 degrees C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Stock solutions should be aliquoted and stored at < -20 degrees C. Further dilutions should be made in appropriate buffered solutions

Source
E. coli
Protein/Peptide Type
Recombinant Protein
Gene
SERPINB5
Purity
>95%, by SDS-PAGE and HPLC
Endotoxin Note
Less than 1 EU/ug of Serpin B5/Maspin as determined by LAL method.

Applications/Dilutions

Dilutions
  • SDS-Page
Theoretical MW
42.1 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Packaging, Storage & Formulations

Storage
Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.
Buffer
Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4.
Preservative
No Preservative
Concentration
LYOPH
Purity
>95%, by SDS-PAGE and HPLC
Reconstitution Instructions
Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL. Apportion stock solutions into working aliquots and store at <-20C.

Alternate Names for Recombinant Human Serpin B5/Maspin Protein

  • Maspin
  • Peptidase inhibitor 5
  • PI5
  • PI-5
  • PI5protease inhibitor 5 (maspin)
  • serine (or cysteine) proteinase inhibitor, clade B (ovalbumin), member 5
  • Serpin B5
  • serpin peptidase inhibitor, clade B (ovalbumin), member 5

Background

Mammary serine protease inhibitor (Maspin), also known as serpin B5 is a non-inhibitory serpin that is encoded by the SERPINB5 gene in humans. The protein is expressed predominantly in normal mammary epithelial cells but at significantly reduced levels or absent in most breast carcinomas. As it does not undergo the S (stressed) to R (relaxed) conformational transition characteristic of active serpins, it exhibits no serine protease inhibitory activity. The maspin functions as tumor suppressor, blocking the growth, invasion, and metastatic properties of mammary tumors. This anti-tumor activity is achieved, in part, by the ability of maspin to inhibit angiogenesis and to preferentially promote apoptosis of tumor cells.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Peptides and proteins are guaranteed for 3 months from date of receipt.

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Bioinformatics

Gene Symbol SERPINB5
Uniprot