Recombinant human PAI1 (mutated S338) protein (ab92773)

Overview

Description

  • NatureRecombinant
  • SourceEscherichia coli
  • Amino Acid Sequence
    • SpeciesHuman
    • Modificationsmutated S338

Specifications

Our Abpromise guarantee covers the use of ab92773 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Biological activitySpecific activity: > 95 percent active by uPA titration; 1 mole NBD / mole PAI1. Excitation: 490 nm; Emission profile: 520 nm – 600 nm. Binding of uPA or tPA results in increase of peak at 540 nm.
  • Applications

    Functional Studies

    SDS-PAGE

  • Purity> 95 % SDS-PAGE.
    ab92773 is > 98% pure by SDS-PAGE.
  • FormLiquid
  • Additional notesProtect from light.
    Solubility: > 2 mg/mL and < 5 mg/mL


    ab92773 was created by mutagenesis of the P9 serine residue (Ser338) on the reactive center loop to cysteine. This then provided a free thiol group for incorporation of N,N'-dimethyl-N-(acetyl)-N'-(7-nitrobenz-2-oxa-1,3-diazol-4-yl) (NBD), a fluorescent probe highly sensitive to changes in solvation and hydrophobic environment. The fluorescence emission of P9-NBD PAI1 is enhanced 6-7 fold upon insertion of the reactive center loop into beta-sheet A following complex formation with proteinases, formation of the latent species, or cleavage by elastase. The incorporated probe is excited at 480 nm and displays a broad emission spectrum with a peak centered 542 nm with a resultant blue-shift to 520 nm following reactive center loop insertion. The modified PAI1 is nearly as active as wt PAI-1 and is more resistant to the spontaneous latency reaction making this an excellent tool for monitoring reaction rates of PAI1. ab92773 has been utilized in a number of studies to determine the rates of loop insertion and SERPIN reaction mechanisms when reacted with various proteinases, inactivating antibodies and conformational changes imposed by the binding of vitronectin.

  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped on dry ice. Upon delivery aliquot and store at -80ºC. Avoid freeze / thaw cycles.

    Preservative: None
    Constituents: 0.1M Sodium chloride, 0.05M Sodium phosphate, 1mM EDTA, pH 6.6

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

General Info

  • Alternative names
    • Clade E
    • Endothelial plasminogen activator inhibitor
    • Nexin
    • PAI
    • PAI 1
    • PAI-1
    • PAI1_HUMAN
    • PLANH1
    • Plasminogen activator inhibitor 1
    • Plasminogen activator inhibitor type 1
    • Serine (or cysteine) proteinase inhibitor
    • Serine (or cysteine) proteinase inhibitor clade E (nexin plasminogen activator inhibitor type 1) member 1
    • Serpin E1
    • Serpin peptidase inhibitor clade E
    • Serpin peptidase inhibitor clade E (nexin plasminogen activator inhibitor type 1) member 1
    • Serpine 1
    • SERPINE1
    see all
  • FunctionThis inhibitor acts as 'bait' for tissue plasminogen activator, urokinase, and protein C. Its rapid interaction with TPA may function as a major control point in the regulation of fibrinolysis.
  • Tissue specificityFound in plasma and platelets and in endothelial, hepatoma and fibrosarcoma cells.
  • Involvement in diseaseDefects in SERPINE1 are the cause of plasminogen activator inhibitor-1 deficiency (PAI-1D) [MIM:613329]. It is a hematologic disorder characterized by increased bleeding after trauma, injury, or surgery. Affected females have menorrhagia. The bleeding defect is due to increased fibrinolysis of fibrin blood clots due to deficiency of plasminogen activator inhibitor-1, which inhibits tissue and urinary activators of plasminogen.
    Note=High concentrations of SERPINE1 seem to contribute to the development of venous but not arterial occlusions.
  • Sequence similaritiesBelongs to the serpin family.
  • Post-translational
    modifications
    Inactivated by proteolytic attack of the urokinase-type (u-PA) and the tissue-type (TPA), cleaving the 369-Arg-
    -Met-370 bond.
  • Cellular localizationSecreted.
  • Information by UniProt

Recombinant human PAI1 (mutated S338) protein images

  • Binding of uPA or tPA results in increase of peak at 540 nm.

References for Recombinant human PAI1 (mutated S338) protein (ab92773)

ab92773 has not yet been referenced specifically in any publications.

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"