PCSK9 蛋白, Human (D374Y, HEK293, His)

The PCSK9 protein is an important regulator of plasma cholesterol homeostasis, affecting LDL receptor family members such as LDLR and VLDLR. It promotes their intracellular degradation and enhances hepatic LDLR degradation through non-proteolytic mechanisms. PCSK9 Protein, Human (D374Y, HEK293, His) is the recombinant human-derived PCSK9 protein, expressed by HEK293 , with C-10*His labeled tag and D374Y, , , , mutation. The total length of PCSK9 Protein, Human (D374Y, HEK293, His) is 662 a.a., with molecular weight of ~17 & 70 kDa, respectively.

PCSK9 蛋白在血浆胆固醇稳态的复杂协调中发挥着关键调节作用。证明其对低密度脂蛋白受体家族成员的影响，包括低密度脂蛋白受体 (LDLR)、极低密度脂蛋白受体 (VLDLR)、载脂蛋白 E 受体 (LRP1/APOER) 和载脂蛋白受体 2 (LRP8/APOER2) ），PCSK9 促进它们在细胞内酸性区室中的降解。它采用非蛋白水解机制，通过网格蛋白 LDLRAP1/ARH 介导的途径增强肝脏 LDLR 降解，可能阻碍 LDLR 回收并将其引导至溶酶体降解。此外，PCSK9 通过自噬体/溶酶体途径表现出 LDLR 独立的 APOB 细胞内降解抑制作用，并在早期分泌途径中非乙酰化 BACE1 中间体的处理中发挥作用。值得注意的是，它通过增强 ENaC 蛋白酶体降解来调节上皮 Na(+) 通道 (ENaC) 介导的 Na(+) 吸收，并通过调节 LRP8/APOER2 水平和相关的抗凋亡信号通路影响神经元凋亡。

Measured by its ability to inhibit the proliferation of HT-29 human coloncancer cells. The ED₅₀ for this effect is 16.92 ng/mL, corresponding to a specificactivity is 5.91×10⁴ Unit/mg.

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  Measured by its ability to inhibit the proliferation of HT-29 human coloncancer cells. The ED₅₀ for this effect is 16.92 ng/mL, corresponding to a specificactivity is 5.91×10⁴ Unit/mg.

Human

HEK293

C-10*His

Q8NBP7 (Q31-Q692, D374Y)

255738  [NCBI]

QEDEDGDYEELVLALRSEEDGLAEAPEHGTTATFHRCAKDPWRLPGTYVVVLKEETHLSQSERTARRLQAQAARRGYLTKILHVFHGLLPGFLVKMSGDLLELALKLPHVDYIEEDSSVFAQSIPWNLERITPPRYRADEYQPPDGGSLVEVYLLDTSIQSDHREIEGRVMVTDFENVPEEDGTRFHRQASKCDSHGTHLAGVVSGRDAGVAKGASMRSLRVLNCQGKGTVSGTLIGLEFIRKSQLVQPVGPLVVLLPLAGGYSRVLNAACQRLARAGVVLVTAAGNFRDDACLYSPASAPEVITVGATNAQDQPVTLGTLGTNFGRCVDLFAPGEDIIGASSYCSTCFVSQSGTSQAAAHVAGIAAMMLSAEPELTLAELRQRLIHFSAKDVINEAWFPEDQRVLTPNLVAALPPSTHGAGWQLFCRTVWSAHSGPTRMATAVARCAPDEELLSCSSFSRSGKRRGERMEAQGGKLVCRAHNAFGGEGVYAIARCCLLPQANCSVHTAPPAEASMGTRVHCHQQGHVLTGCSSHWEVEDLGTHKPPVLRPRGQPNQCVGHREASIHASCCHAPGLECKVKEHGIPAPQEQVTVACEEGWTLTGCSALPGTSHVLGAYAVDNTCVVRSRDVSTTGSTSEGAVTAVAICCRSRHLAQASQELQ

Approximately 17 & 70 kDa

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

无菌粉末.

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

<1 EU/μg, determined by LAL method.

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).

Stored at -20°C for 2 years from date of receipt. 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.