1. Recombinant Proteins
  2. Enzymes & Regulators
  3. Protease Inhibitors
  4. Serpin (Protease Inhibitor)
  5. Heparin Cofactor II
  6. Serpin D1 Protein, Human (HEK293, His)

Serpin D1 Protein, Human (HEK293, His)

Cat. No.: HY-P77199
COA Handling Instructions

Serpin D1 protein is a thrombin inhibitor activated by glycosaminoglycans such as heparin or dermatan sulfate. It replaces antithrombin III and becomes the main thrombin inhibitor in the presence of dermatan sulfate. In addition to thrombin inhibition, serpin D1 also has glycosaminoglycan-independent chymotrypsin inhibitory activity. Serpin D1 Protein, Human (HEK293, His) is the recombinant human-derived Serpin D1 protein, expressed by HEK293 , with C-His labeled tag. The total length of Serpin D1 Protein, Human (HEK293, His) is 480 a.a., with molecular weight of ~75-80 kDa.

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  • Biological Activity

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Description

Serpin D1 protein is a thrombin inhibitor activated by glycosaminoglycans such as heparin or dermatan sulfate. It replaces antithrombin III and becomes the main thrombin inhibitor in the presence of dermatan sulfate. In addition to thrombin inhibition, serpin D1 also has glycosaminoglycan-independent chymotrypsin inhibitory activity. Serpin D1 Protein, Human (HEK293, His) is the recombinant human-derived Serpin D1 protein, expressed by HEK293 , with C-His labeled tag. The total length of Serpin D1 Protein, Human (HEK293, His) is 480 a.a., with molecular weight of ~75-80 kDa.

Background

Serpin D1 Protein functions as a thrombin inhibitor, with its activity activated by glycosaminoglycans such as heparin or dermatan sulfate. In the presence of dermatan sulfate, HC-II becomes the predominant thrombin inhibitor, displacing antithrombin III (AT-III). Beyond its role in thrombin inhibition, Serpin D1 also exhibits chymotrypsin-inhibiting activity, independent of glycosaminoglycans. Notably, peptides at the N-terminal of HC-II demonstrate chemotactic activity for both monocytes and neutrophils. This multifaceted functionality highlights the diverse roles of Serpin D1 in regulating protease activities and participating in immune responses, underscoring its significance in maintaining hemostasis and modulating inflammatory processes.

Biological Activity

Measured by its ability to inhibit Thrombin cleavage of a peptide substrate, Boc-VPR-AMC. The IC50 value is 0.344 nM, as measured under the described conditions.

Species

Human

Source

HEK293

Tag

C-His

Accession

P05546 (G20-S499)

Gene ID
Molecular Construction
N-term
Serpin D1 (G20-S499)
Accession # P05546
His
C-term
Synonyms
Heparin cofactor 2; Heparin cofactor II; HC-II; Protease inhibitor leuserpin-2
AA Sequence

GSKGPLDQLEKGGETAQSADPQWEQLNNKNLSMPLLPADFHKENTVTNDWIPEGEEDDDYLDLEKIFSEDDDYIDIVDSLSVSPTDSDVSAGNILQLFHGKSRIQRLNILNAKFAFNLYRVLKDQVNTFDNIFIAPVGISTAMGMISLGLKGETHEQVHSILHFKDFVNASSKYEITTIHNLFRKLTHRLFRRNFGYTLRSVNDLYIQKQFPILLDFKTKVREYYFAEAQIADFSDPAFISKTNNHIMKLTKGLIKDALENIDPATQMMILNCIYFKGSWVNKFPVEMTHNHNFRLNEREVVKVSMMQTKGNFLAANDQELDCDILQLEYVGGISMLIVVPHKMSGMKTLEAQLTPRVVERWQKSMTNRTREVLLPKFKLEKNYNLVESLKLMGIRMLFDKNGNMAGISDQRIAIDLFKHQGTITVNEEGTQATTVTTVGFMPLSTQVRFTVDRPFLFLIYEHRTSCLLFMGRVANPSRS

Molecular Weight

Approximately 75-80 kDa

Purity

Greater than 95% as determined by reducing SDS-PAGE

Appearance

Lyophilized powder

Formulation

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation

Serpin D1 Protein, Human (HEK293, His) Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

  • Reconstitution Calculator

  • Dilution Calculator

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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Serpin D1 Protein, Human (HEK293, His)
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HY-P77199
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