激肽原, 高分子量 来源于人血浆

货号: np001047
有货
级别和纯度: BioReagent ? 生物试剂级(BioReagent)—— 经测试适用于生命科学和分子生物学。适用于需要生物相容性的细胞培养、检测和生化工作。 天然 ? 天然型(Native)—— 处于天然(非重组、非变性)形态的蛋白/生物分子。当需要天然结构和活性时使用。 ≥95%(SDS-PAGE) 蛋白浓度: 见COA
Accession #
P01042
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规格
库存
价格
数量
25μg
np001047-25μg
期货 Stock Image
¥1,199.90
100μg
np001047-100μg
期货 Stock Image
¥2,799.90
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为什么选择此级别

BioReagent,天然 级 提供 ≥95%(SDS-PAGE) 纯度,适用于对基线干扰要求严格的色谱和分析工作流程。

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储存与运输

-80℃储存,避免反复冻融。特低温运输 。请查阅批次 COA 获取详细规格。

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质量文档

SDS、COA、产品数据表及规格说明书均可下载。可通过批号查询获取批次 COA。

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文献证明

在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。

概述

高分子量激肽原(HMWK)是一种多功能血浆蛋白,主要由肝细胞合成。作为缓激肽的前体,HMWK 在激肽释放酶‑激肽系统中发挥核心作用;它可被血浆激肽释放酶裂解,释放出缓激肽。该肽能够介导血管舒张、血管通透性增加以及疼痛信号传导。除作为缓激肽前体外,HMWK 还是内源性凝血通路中的关键辅因子,可促进 XI 因子、XII 因子及前激肽释放酶的激活。此外,HMWK 是重要的胞外半胱氨酸蛋白酶抑制剂,能够调控蛋白酶活性,保护组织免受过度蛋白水解损伤。
常见研究用途
HMWK 功能失调与多种病理状态相关,包括遗传性血管性水肿,该病中缓激肽过量生成会引发反复发作的水肿。此外,激肽原活性异常还与肿瘤进展、肌营养不良及关节疾病有关,使 HMWK 成为上述疾病潜在的治疗靶点与生物标志物。

常见应用:心血管研究、酶学及抑制活性实验、治疗药物研究、体外诊断(IVD)检测标准品、校准品与质控品。

 High Molecular Weight Kininogen (HMWK) is a multifunctional plasma protein primarily synthesized by hepatocytes. As the precursor to bradykinin, HMWK plays a central role in the kallikrein-kinin system, where it is cleaved by plasma kallikrein to release bradykinin, a peptide that mediates vasodilation, increased vascular permeability, and pain signaling. Beyond its role as a bradykinin precursor, HMWK functions as a critical cofactor in the intrinsic pathway of blood coagulation, facilitating the activation of factors XI, XII, and prekallikrein. Additionally, HMWK acts as a major extracellular cysteine proteinase inhibitor, helping to regulate protease activity and protect tissues from excessive proteolysis.
Common research uses
Dysregulation of HMWK has been implicated in various pathological conditions, including hereditary angioedema, where bradykinin overproduction leads to recurrent swelling episodes. Furthermore, altered kininogen activity is associated with cancer progression, muscular dystrophy, and joint diseases, making HMWK a potential therapeutic target and biomarker in these disorders.

Common uses include cardiovascular research, enzymatic and inhibition assays, therapeutics research, IVD Assay standards, calibrators and controls.

规格

产品名称
激肽原, 高分子量 来源于人血浆
别名
高分子量激肽原 | 激肽原, HMW, 来源于人血浆
英文别名
HMW kininogen | Kininogen, HMW | Kininogen-1 | kininogen 1 | KNG1 | BK | HK | BDK | KNG | HAE6 | HMWK | Kininogen, High Molecular Weight | High Molecular Weight Kininogen | High‑molecular‑weight kininogen | HMW kininogen | Kininogen, HMW | Kininogen-1 | k
规格或纯度
BioReagent, 天然, ≥95%(SDS-PAGE), 蛋白浓度: 见COA
生化机理
Kininogens are inhibitors of thiol proteases. HMW-kininogen plays an important role in blood coagulation by helping to position optimally prekallikrein and factor XI next to factor XII; HMW-kininogen inhibits the thrombin- and plasmin-induced aggregation of thrombocytes. LMW-kininogen inhibits the aggregation of thrombocytes. LMW-kininogen is in contrast to HMW-kininogen not involved in blood clotting. Bradykinin: The active peptide bradykinin is a potent vasodilatator that is released from HMW-kininogen shows a variety of physiological effects: (A) influence in smooth muscle contraction, (B) induction of hypotension, (C) natriuresis and diuresis, (D) decrease in blood glucose level, (E) it is a mediator of inflammation and causes (E1) increase in vascular permeability, (E2) stimulation of nociceptors (4E3) release of other mediators of inflammation (e.g. prostaglandins), (F) it has a cardioprotective effect (directly via bradykinin action, indirectly via endothelium-derived relaxing factor action). Post-translational: Bradykinin is inactivated by ACE, which removes the dipeptide Arg-Phe from its C-terminus. Bradykinin is released from kininogen by plasma kallikrein. Hydroxylation of Pro-383 occurs prior to the release of bradykinin. Phosphorylated by FAM20C in the extracellular medium. N- and O-glycosylated. O-glycosylated with core 1 or possibly core 8 glycans. (Microbial infection) Bradykinin is generated upon proteolytic cleavage by S.pyogenes SpeB to produce hypotension during septic shock.
种属
人(Human)
来源
天然
预测分子量
120 kDa
分子类型
肽
产品线
生物产品
储存与运输
物理形态
液体
储存缓冲液
10 mM Na acetate, 250 mM NaCl, pH 5.5.
浓度
蛋白浓度: 见COA
储存条件
-80℃储存,避免反复冻融
运输条件
特低温运输
稳定性与储存
长期储存-80℃(>1年);收货后建议分装,避免反复冻融。

技术文档

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