亮藍號：3844-45-9   
英文名稱：Erioglaucine disodium salt；Acid Blue 9；Alphazurine FG；C.I. Food Blue 2；C.I. 42090   
其他名稱：酸性藍9；罌紅二鈉鹽；雙[4-（N-乙基-N-3-磺酸苯甲基）氨基苯基]-2-磺酸甲苯基二鈉鹽；食品藍1；羊毛罌紅A；C.I.食品藍2(42090)；藍色1號；亮藍1   
號：3844-45-9   
C37H34Na2N2O9S3=792.85   
級別：BR   
含量：≥85.0%   
λmax：625～630nm   
紅外光譜鑒別：和對照品匹配   
紫外光譜UV spectrometry：符合   
干燥失重：≤10 % (135℃)   
吸光度Absorbance min.：0.350(2.5mg/L, 0.02mol/L 醋酸銨溶液，625～630nm)(以干基計)   
性狀(以下信息僅供參考)：具有金屬光澤的紅紫色或暗紫色粉末。易溶于水，水溶液呈藍色?？扇苡诟视停掖技氨?。耐光性，耐熱性，耐酸性，耐堿性均好，對檸檬酸，酒石酸穩(wěn)定。熔點：283℃   
用途：本品僅供科研，不得用于其它用途。(以下用途僅供參考)生物染色劑。   
保存：RT，避光亮藍號：3844-45-9儲存條件：
避光、干燥陰涼處封閉貯存,嚴禁與有毒、有害物品混放、混運。本品為非危險 產品可按一般化學品運輸,輕搬動輕放,防止日曬、雨淋！受熱、受潮、受光后易喪失活力,保存期短,因此貯存和運輸條件比較苛刻。
運輸：汽車運輸、EMS郵政快遞，申通快遞等， 款到上海3天內發(fā)貨；
售后：如您對我們的產品服務及技術指標有特殊要求，請及時通知我方。
存儲：應貯存在干燥清潔避光的環(huán)境中，嚴禁與有毒物質混放，以免污染（保質期為兩年）。
亮藍號：3844-45-9主要優(yōu)級純、分級純和化學純3種：
（1）優(yōu)級純（GR：Guaranteed reagent），又稱一級品或保證試劑，99.8%，這種試劑純度Z高，雜質含量Z低，適合于重要精密的分析工作和科學研究工作，使用綠色瓶簽。
（2）分析純（AR），又稱二級試劑，純度很高，99.7%，略次于優(yōu)級純，適合于重要分析及一般研究工作，使用紅色瓶簽。
（3）化學純（CP），又稱三級試劑，≥ 99.5%，純度與分析純相差較大，適用于工礦、學校一般分析工作。使用藍色（深藍色）標簽。
（4）實驗試劑（LR：Laboratory reagent），又稱四級試劑。
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1diagnostic applications.
產品介紹 The Trk family of nerve growth factor receptors includes Trk A(also referfed to as Trk A gp140),Trk B and Trk C. The prototype member of this gene family, Trk A, encodes a 140 kDa cell surface receptor, gp140, the expression of which is restricted in vivo to neurons of the sensory spinal and cranial gangliaof neurocrest origin. Nerve growth factor (NGF) stimulates tyrosine phosphorylation of Trk gp 140 in neural cell lines and in embryonic dorsal root ganglia. By comparison, BDNF and to a lesser extent, NT-3, but not NGF, can induce tyrosine phophorylayion of Trk B gp 145. The third member of the Trk receptor family, Trk C incodes a 140 kDa protein, Trk C gp140, that is preferentially expressed in brain tissue and primarily functions as a receptor for NT-3.An additional component of the Trk receptor complex, NGFR p175, binds to neurotrophic factors with low affinity but is required for efficient signaling. NGFR p175 accelerates Trk activation and may recruit downstream dffector molecules to the ligand-bound receptor complex.
Function : Receptor tyrosine kinase involved in the development and the maturation of the central and the peripheral nervous systems through regulation of neuron survival, proliferation, migration, differentiation, and synapse formation and plasticity. Receptor for BDNF/brain-derived neurotrophic factor and NTF4/neurotrophin-4. Alternatively can also bind NTF3/neurotrophin-3 which is less efficient in activating the receptor but regulates neuron survival through NTRK2. Upon ligand-binding, undergoes homodimerization, autophosphorylation and activation. Recruits, phosphorylates and/or activates several downstream effectors including SHC1, FRS2, SH2B1, SH2B2 and PLCG1 that regulate distinct overlapping signaling cascades. Through SHC1, FRS2, SH2B1, SH2B2 activates the GRB2-Ras-MAPK cascade that regulates for instance neuronal differentiation including neurite outgrowth. Through the same effectors controls the Ras-PI3 kinase-AKT1 signaling cascade that mainly regulates growth and survival. Through PLCG1 and the downstream protein kinase C-regulated pathways controls synaptic plasticity. Thereby, plays a role in learning and memory by regulating both short term synaptic function and long-term potentiation. PLCG1 also leads to NF-Kappa-B activation and the transcription of genes involved in cell survival. Hence, it is able to suppress anoikis, the apoptosis resulting from loss of cell-matrix interactions. May also play a role in neutrophin-dependent calcium signaling in glial cells and mediate communication between neurons and glia.
Subunit : Exists in a dynamic equilibrium between monomeric (low affinity) and dimeric (high affinity) structures. Interacts (phosphorylated upon activation by BDNF) with SHC1; mediates SHC1 phosphorylation and activation. Interacts (phosphorylated upon activation by BDNF) with PLCG1 and/or PLCG2; mediates PLCG1 phosphorylation and activation. Interacts with SH2B1 and SH2B2. Interacts with NGFR; may regulate the ligand specificity of the receptor. Interacts (phosphorylated upon ligand-binding) with SH2D1A; regulates NTRK2. Interacts with SQSTM1 and KIDINS220. Interacts (phosphorylated upon l亮藍號：3844-45-9igand-binding) with FRS2; activates the MAPK signaling pathway.
Subcellular Location : Cell membrane; Single-pass type I membrane protein. Endosome membrane; Single-pass type I membrane protein. Note=Internalized to endosomes upon ligand-binding.
Tissue Specificity : Isoform TrkB is expressed in the central and peripheral nervous system. In the central nervous system (CNS), expression is observed in the cerebral cortex, hippocampus, thalamus, choroid plexus, granular layer of the cerebellum, brain stem, and spinal cord. In the peripheral nervous system, it is expressed in many cranial ganglia, the ophtalmic nerve, the vestibular system, multiple facial structures, the submaxillary glands, and dorsal root ganglia. Isoform TrkB-T1 is mainly expressed in the brain but also detected in other tissues including pancreas, kidney and heart. Isoform TrkB-T-Shc is predominantly expressed in the brain.
Post-translational modifications : Phosphorylated. Undergoes ligand-mediated autophosphorylation that is required for interaction with SHC1 and PLCG1 and other downstream effectors. Isoform TrkB-T-Shc is not phosphorylated.
Ubiquitinated. Undergoes polyubiquitination upon activation; regulated by NGFR. Ubiquitination regulates the internalization of the receptor (By similarity).
DISEASE : Defects in NTRK2 are the cause of obesity hyperphagia and developmental delay (OHPDD) [MIM:613886]. OHPDD is a disorder characterized by early-onset obesity, hyperphagia, and severe developmental delay in motor function, speech, and language.
Similarity : Belongs to the protein kinase superfamily. Tyr protein kinase family. Insulin receptor subfamily.
Contains 2 Ig-like C2-type (immunoglobulin-like) domains.
Contains 2 LRR (leucine-rich) repeats.
Contains 1 LRRCT domain.
Contains 1 LRRNT domain.