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  3. Protease Inhibitors
  4. Serpin (Protease Inhibitor)
  5. Alpha 1 Antichymotrypsin
  6. Serpin A3 Protein, Human (K267R, HEK293, His)

Serpin A3 Protein, Human (K267R, HEK293, His)

Cat. No.: HY-P71054
SDS COA Handling Instructions

Serpin A3 Proteinas, with unclear physiological function, inhibits neutrophil cathepsin G and mast cell chymase, involved in angiotensin-1 to angiotensin-2 conversion. Serpin A3 also interacts with DNAJC1. Serpin A3 Protein, Human (K267R, HEK293, His) is the recombinant human-derived Serpin A3 protein, expressed by HEK293 , with C-6*His labeled tag and K267R mutation. The total length of Serpin A3 Protein, Human (K267R, HEK293, His) is 400 a.a., with molecular weight of 56-80 kDa.

For research use only. We do not sell to patients.

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  • Biological Activity

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Description

Serpin A3 Proteinas, with unclear physiological function, inhibits neutrophil cathepsin G and mast cell chymase, involved in angiotensin-1 to angiotensin-2 conversion. Serpin A3 also interacts with DNAJC1. Serpin A3 Protein, Human (K267R, HEK293, His) is the recombinant human-derived Serpin A3 protein, expressed by HEK293 , with C-6*His labeled tag and K267R mutation. The total length of Serpin A3 Protein, Human (K267R, HEK293, His) is 400 a.a., with molecular weight of 56-80 kDa.

Background

While the physiological function of Serpin A3 remains unclear, it exhibits inhibitory activity against neutrophil cathepsin G and mast cell chymase. These enzymes play a role in the conversion of angiotensin-1 to the biologically active angiotensin-2. Additionally, Serpin A3 interacts with DNAJC1.

Biological Activity

Measured by its ability to inhibit chymotrypsin cleavage of a fluorogenic peptide substrate MCA-RPKPVE-Nval-WRK(Dnp)-NH2. The IC50 is 15.152 nM, as measured under the described conditions.

Species

Human

Source

HEK293

Tag

C-6*His

Accession

P01011 (H24-A423, K267R)

Gene ID

12  [NCBI]

Molecular Construction
N-term
Serpin A3 (H24-A423, K267R)
Accession # P01011
6*His
C-term
Synonyms
Alpha-1-Antichymotrypsin; ACT; Cell Growth-Inhibiting Gene 24/25 Protein; Serpin A3; SERPINA3; AACT
AA Sequence

HPNSPLDEENLTQENQDRGTHVDLGLASANVDFAFSLYKQLVLKAPDKNVIFSPLSISTALAFLSLGAHNTTLTEILKGLKFNLTETSEAEIHQSFQHLLRTLNQSSDELQLSMGNAMFVKEQLSLLDRFTEDAKRLYGSEAFATDFQDSAAAKKLINDYVKNGTRGKITDLIKDLDSQTMMVLVNYIFFKAKWEMPFDPQDTHQSRFYLSKKKWVMVPMMSLHHLTIPYFRDEELSCTVVELRYTGNASALFILPDQDKMEEVEAMLLPETLKRWRDSLEFREIGELYLPKFSISRDYNLNDILLQLGIEEAFTSKADLSGITGARNLAVSQVVHKAVLDVFEEGTEASAATAVKITLLSALVETRTIVRFNRPFLMIIVPTDTQNIFFMSKVTNPKQA

Molecular Weight

56-80 kDa

Purity

Greater than 95% as determined by reducing SDS-PAGE.

Appearance

Lyophilized powder

Formulation

Lyophilized from a 0.2 μm filtered solution of 20 mM HEPES, 150 mM NaCl, pH 7.5 or 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 20 mM HEPES, 150 mM NaCl, pH 7.4. 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 A3 Protein, Human (K267R, 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

  • Specific Activity Calculator

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 A3 Protein, Human (K267R, HEK293, His)
Cat. No.:
HY-P71054
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