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血管紧张素I
✍ dations ◷ 2025-06-27 08:34:37 #血管紧张素I
1N9U, 1N9V, 2JP8, 2WXW, 2X0B· hormone activity
· hormone activity
· protein binding
· growth factor activity
· acetyltransferase activator activity
· type 1 angiotensin receptor binding· extracellular region
· extracellular region
· extracellular space
· extracellular space
· extracellular space
· soluble fraction· regulation of cell growth
· blood vessel development
· positive regulation of cytokine production
· kidney development
· blood vessel remodeling
· angiotensin mediated vasoconstriction involved in regulation of systemic arterial blood pressure
· renal response to blood flow involved in circulatory renin-angiotensin regulation of systemic arterial blood pressure
· regulation of blood volume by renin-angiotensin
· renin-angiotensin regulation of aldosterone production
· regulation of renal output by angiotensin
· regulation of blood vessel size by renin-angiotensin
· brain renin-angiotensin system
· cellular sodium ion homeostasis
· cell-matrix adhesion
· G-protein coupled receptor protein signaling pathway
· G-protein signaling, coupled to cGMP nucleotide second messenger
· activation of phospholipase C activity by G-protein coupled receptor protein signaling pathway coupled to IP3 second messenger
· nitric oxide mediated signal transduction
· cell-cell signaling
· excretion
· establishment of blood-nerve barrier
· regulation of blood pressure
· negative regulation of cell proliferation
· response to cold
· response to salt stress
· positive regulation of activation of JAK2 kinase activity
· positive regulation of endothelial cell migration
· positive regulation of cardiac muscle hypertrophy
· positive regulation of macrophage derived foam cell differentiation
· positive regulation of cholesterol esterification
· negative regulation of endopeptidase activity
· regulation of norepinephrine secretion
· positive regulation of phosphatidylinositol 3-kinase cascade
· response to muscle activity involved in regulation of muscle adaptation
· regulation of vasoconstriction
· regulation of proteolysis
· extracellular matrix organization
· negative regulation of cell growth
· peristalsis
· positive regulation of cellular protein metabolic process
· positive regulation of NAD(P)H oxidase activity
· low-density lipoprotein particle remodeling
· positive regulation of multicellular organism growth
· regulation of cell proliferation
· hormone metabolic process
· drinking behavior
· positive regulation of apoptosis
· positive regulation of catalytic activity
· positive regulation of MAPKKK cascade
· negative regulation of neuron apoptosis
· cellular lipid metabolic process
· positive regulation of fatty acid biosynthetic process
· positive regulation of epidermal growth factor receptor signaling pathway
· positive regulation of transcription, DNA-dependent
· positive regulation of organ growth
· astrocyte activation
· positive regulation of fibroblast proliferation
· regulation of long-term neuronal synaptic plasticity
· smooth muscle cell proliferation
· positive regulation of inflammatory response
· positive regulation of peptidyl-tyrosine phosphorylation
· positive regulation of NF-kappaB transcription factor activity
· smooth muscle cell differentiation
· negative regulation of nerve growth factor receptor signaling pathway
· positive regulation of protein tyrosine kinase activity
· positive regulation of branching involved in ureteric bud morphogenesis血管收缩素(Angiotensin),亦称血管紧张素、血管张力素,是一种寡肽类激素,是肾素-血管收缩素系统(renin-angiotensin system)的重要组成部分。血管紧张素能引起血管收缩,升高血压;促进肾上腺皮质释放醛固酮。它也具有很强的致渴作用。血管紧张素的前体是由肝脏合成的一种血清球蛋白:血管紧张素原。血管紧张素最早于20世纪30年代末由美国印第安纳和阿根廷的研究人员分别独立分离,并被分别命名为Angiotonin和Hypertensin,后来被美国克利夫兰诊所和瑞士巴塞尔的汽巴实验室(Ciba Laboratories)描述并合成。血管紧张素原是一种主要由肝脏持续合成并释放入血液循环的α-2球蛋白。它属于丝氨酸蛋白酶抑制物超家族(serine protease inhibitors,serpin),虽然就目前所知它不能抑制任何酶的活性。皮质激素、雌激素、甲状腺素和血管紧张素II可增高血浆血管紧张素原含量。血管紧张素原是肾素的底物。人血管紧张素原包含452个氨基酸残基,而其他物种的血管紧张素原大小有所不同。它的N-端12个氨基酸残基由于关系到其活性而最为重要。血管紧张素Ⅰ由肾素作用于血管紧张素原形成。肾素能催化血管紧张素原亮氨酸(Leu)与缬氨酸(Val)间的肽键水解产生十肽血管紧张素I;血管紧张素Ⅰ基本没有生物学活性,而是作为血管紧张素Ⅱ的前体存在。血管紧张素I经血管紧张素Ⅰ转化酶剪切C-末端两个氨基酸残基而形成血管紧张素Ⅱ。血管紧张素II是一种可通过内分泌、自分泌/旁分泌以及胞内分泌发挥作用的激素。血管紧张素Ⅱ通过血管紧张素酶降解为血管紧张素Ⅲ,其在循环系统的半衰期约为30秒,而在组织中最长可达15至30分钟。相比较血管紧张素Ⅱ而言,血管紧张素Ⅲ(七肽)仍具有40%的升压活性和100%的促醛固酮分泌活性。血管紧张素Ⅳ(六肽)与血管紧张素Ⅲ相似,而活性更低。Template:Angiotensin receptor modulators(英语:Template:Angiotensin receptor modulators)
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