cGAS 蛋白, Human (His-SUMO)

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.

cGAS 蛋白是一种核苷酸转移酶，通过催化 ATP 和 GTP 形成环 GMP-AMP (2',3'-cGAMP)，在先天免疫中发挥关键作用。作为关键的 DNA 传感器，cGAS 直接结合双链 DNA (dsDNA)，诱导 2',3'-cGAMP 的合成，这是激活 STING1 的第二信使，从而产生 I 型干扰素并触发免疫反应。cGAS 可识别弯曲的长 dsDNA，充当外来 DNA 传感器，检测来自病毒、逆转录病毒、细菌和中性粒细胞胞外陷阱 (NET) 的 DNA 的存在。此外，cGAS 对细胞应激过程中释放的内源 DNA 做出反应，导致无菌炎症。它通过与胞质染色质片段结合来调节细胞衰老，并参与对基因组不稳定和双链 DNA 断裂的炎症反应。cGAS 还参与感知翻译应激，其激活会抑制 DNA 损伤时的同源重组修复。人类 cGAS 表现出物种特异性的 DNA 识别机制，可以对病原体做出更精细的反应。

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

Human

E. coli

N-6*His;N-SUMO

Q8N884-1 (G161-F522)

115004  [NCBI]

GASKLRAVLEKLKLSRDDISTAAGMVKGVVDHLLLRLKCDSAFRGVGLLNTGSYYEHVKISAPNEFDVMFKLEVPRIQLEEYSNTRAYYFVKFKRNPKENPLSQFLEGEILSASKMLSKFRKIIKEEINDIKDTDVIMKRKRGGSPAVTLLISEKISVDITLALESKSSWPASTQEGLRIQNWLSAKVRKQLRLKPFYLVPKHAKEGNGFQEETWRLSFSHIEKEILNNHGKSKTCCENKEEKCCRKDCLKLMKYLLEQLKERFKDKKHLDKFSSYHVKTAFFHVCTQNPQDSQWDRKDLGLCFDNCVTYFLQCLRTEKLENYFIPEFNLFSSNLIDKRSKEFLTKQIEYERNNEFPVFDEF

Approximately 58.3 kDa

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

无菌粉末

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

<1 EU/μg, determined by LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O.

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.

Room temperature in continental US; may vary elsewhere.