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L2884

Sigma-Aldrich

亮肽素

powder, ≥90% (HPLC)

同義詞:

亮抑酶肽 半硫酸盐, Acetyl-Leu-Leu-Arg-al, N-乙酰基-L-亮氨酰-L-亮氨酰-L-精氨醛 半硫酸盐

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About This Item

線性公式:
C20H38N6O4 · 1/2H2SO4
CAS號碼:
分子量::
475.59
MDL號碼:
分類程式碼代碼:
12352202
PubChem物質ID:
NACRES:
NA.77

product name

亮肽素, microbial, ≥90% (HPLC)

生物源

microbial

品質等級

化驗

≥90% (HPLC)

形狀

powder

溶解度

H2O: 10 mM (Solutions are stable for a week at 4 °C. Stock solutions are stable up to 6 months at −20 °C.)
H2O: 50 mg/mL

儲存溫度

−20°C

SMILES 字串

OS(O)(=O)=O.CC(C)C[C@H](NC(C)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C=O.CC(C)C[C@H](NC(C)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCCNC(N)=N)C=O

InChI

1S/2C20H38N6O4.H2O4S/c2*1-12(2)9-16(24-14(5)28)19(30)26-17(10-13(3)4)18(29)25-15(11-27)7-6-8-23-20(21)22;1-5(2,3)4/h2*11-13,15-17H,6-10H2,1-5H3,(H,24,28)(H,25,29)(H,26,30)(H4,21,22,23);(H2,1,2,3,4)/t2*15-,16-,17-;/m00./s1

InChI 密鑰

CIPMKIHUGVGQTG-VFFZMTJFSA-N

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一般說明

亮肽素或N-乙酰基-L-亮氨酰-L-亮氨酰-L-精氨酸是天然存在的三肽,尤其适合用作丝氨酸蛋白酶抑制剂和半胱氨酸蛋白酶抑制剂。 其作用机理涉及结构相似的共价结合反应:
  • 在丝氨酸蛋白酶的活性位点中,亮肽素在亮肽素的醛基和酶活性位点丝氨酸残基的羟基之间形成共价半缩醛加合物。
  • 在半胱氨酸蛋白酶的活性位点中,亮肽素的亲电子(醛)碳与酶活性位点中半胱氨酸残基的硫原子形成相当的键。

生化/生理作用

丝氨酸和半胱氨酸蛋白酶抑制剂。抑制纤溶酶、胰蛋白酶、木瓜蛋白酶、钙蛋白酶和组织蛋白酶B。不抑制胃蛋白酶、组织蛋白酶A和D、凝血酶或α-糜蛋白酶。有效浓度为10-100 μM.已有许多研究使用亮抑酶肽来预防因听觉过度刺激或耳毒性抗生素庆大霉素引起的听力损失。(耳蜗毛细胞的丧失被认为是由钙蛋白酶介导的。)

分析報告

由于在溶液中形成互变异构异构体,亮抑酶肽在 HPLC 上产生多个峰。大多数污染肽是外消旋亮抑酶肽。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


分析證明 (COA)

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文章

ReadyShield® phosphatase and protease inhibitor cocktail FAQ for sample protection in a variety of cell types and tissue extracts, including mammalian, plant, and microbial samples. Our ReadyShield® Protease Inhibitor Cocktail is a non-freezing solution that contains inhibitors with a broad specificity for serine, cysteine, acid proteases and aminopeptidases.

ReadyShield® 磷酸酶和蛋白酶抑制劑雞尾酒常見問題,用於各種細胞類型和組織萃取物的樣本保護,包括哺乳動物、植物和微生物樣本。我們的 ReadyShield® Protease Inhibitor Cocktail 是一種非冷凍溶液,含有對絲氨酸、半胱氨酸、酸性蛋白酶和氨肽酶具有廣泛特異性的抑制劑。

我們的科學家團隊在所有研究領域都有豐富的經驗,包括生命科學、材料科學、化學合成、色譜、分析等.

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