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  3. Transferases (EC 2)
  4. cGAS Protein, Human (His-SUMO)

cGAS Protein, Human (His-SUMO)

Cat. No.: HY-P71597
COA Handling Instructions

The cGAS protein is a nucleotidyl transferase that crucially mediates innate immunity by catalyzing the formation of 2',3'-cGAMP from ATP and GTP upon binding to double-stranded DNA (dsDNA). As a DNA sensor, cGAS detects exogenous and endogenous DNA, triggering STING1 activation and type I interferon production. cGAS Protein, Human (His-SUMO) is the recombinant human-derived cGAS protein, expressed by E. coli , with N-6*His, N-SUMO labeled tag. The total length of cGAS Protein, Human (His-SUMO) is 362 a.a., with molecular weight of ~58.3 kDa.

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

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Description

The cGAS protein is a nucleotidyl transferase that crucially mediates innate immunity by catalyzing the formation of 2',3'-cGAMP from ATP and GTP upon binding to double-stranded DNA (dsDNA). As a DNA sensor, cGAS detects exogenous and endogenous DNA, triggering STING1 activation and type I interferon production. cGAS Protein, Human (His-SUMO) is the recombinant human-derived cGAS protein, expressed by E. coli , with N-6*His, N-SUMO labeled tag. The total length of cGAS Protein, Human (His-SUMO) is 362 a.a., with molecular weight of ~58.3 kDa.

Background

cGAS Protein, a nucleotidyltransferase, plays a pivotal role in innate immunity by catalyzing the formation of cyclic GMP-AMP (2',3'-cGAMP) from ATP and GTP. Acting as a key DNA sensor, cGAS directly binds double-stranded DNA (dsDNA), inducing the synthesis of 2',3'-cGAMP, a second messenger that activates STING1, leading to the production of type-I interferon and triggering immune responses. Recognizing curved long dsDNAs, cGAS acts as a foreign DNA sensor, detecting the presence of DNA from viruses, retroviruses, bacteria, and neutrophil extracellular traps (NETs). Moreover, cGAS responds to endogenous DNA released during cellular stress, contributing to sterile inflammation. It regulates cellular senescence by binding to cytosolic chromatin fragments and participates in the inflammatory response to genome instability and double-stranded DNA breaks. cGAS is also implicated in sensing translation stress, and its activation inhibits homologous recombination repair in response to DNA damage. Human cGAS exhibits species-specific mechanisms of DNA recognition, allowing a more finely tuned response to pathogens.

Biological Activity

The enzyme activity of this recombinant protein is testing in progress, we cannot offer a guarantee yet.

Species

Human

Source

E. coli

Tag

N-6*His;N-SUMO

Accession

Q8N884 (G161-F522)

Gene ID
Molecular Construction
N-term
6*His-SUMO
cGAS (G161-F522)
Accession # Q8N884
C-term
Synonyms
C6orf150; cGAMP synthase; cGAS; CGAS_HUMAN; cGMP Synthase; Chromosome 6 open reading frame 150; Cyclic GMP-AMP synthase; h-cGAS; Hypothetical protein LOC115004; Mab 21 domain containing 1; Mab-21 domain-containing protein 1; MB21D1; MGC131892; MGC142166; MGC142168; OTTHUMP00000016743; OTTHUMP00000039330; protein MB21D1; Uncharacterized protein C6orf150
AA Sequence

GASKLRAVLEKLKLSRDDISTAAGMVKGVVDHLLLRLKCDSAFRGVGLLNTGSYYEHVKISAPNEFDVMFKLEVPRIQLEEYSNTRAYYFVKFKRNPKENPLSQFLEGEILSASKMLSKFRKIIKEEINDIKDTDVIMKRKRGGSPAVTLLISEKISVDITLALESKSSWPASTQEGLRIQNWLSAKVRKQLRLKPFYLVPKHAKEGNGFQEETWRLSFSHIEKEILNNHGKSKTCCENKEEKCCRKDCLKLMKYLLEQLKERFKDKKHLDKFSSYHVKTAFFHVCTQNPQDSQWDRKDLGLCFDNCVTYFLQCLRTEKLENYFIPEFNLFSSNLIDKRSKEFLTKQIEYERNNEFPVFDEF

Molecular Weight

Approximately 58.3 kDa

Purity

Greater than 90% as determined by reducing SDS-PAGE.

Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.2 μ m sterile filtered 20 mM Tris-HC1, 0.5 M NaCl, 6% Trehalose, pH 8.0.

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.

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

cGAS Protein, Human (His-SUMO) 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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cGAS Protein, Human (His-SUMO)
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