Peptide tyrosine tyrosine

Peptide YY (PYY) is a 36-amino acid peptide and anorectic gut hormone agonist for the neuropeptide Y receptors Y1, Y2, Y5, and Y6 with EC50 values of 0.7, 0.58, 1, and 0.8 nM, respectively, for supression of forskolin-induced cAMP accumulation. PYY is cleaved in vivo to PYY (3-36) . Release of PYY occurs postprandially in proportion to calorie intake from intestinal enteroendocrine L cells, indicating it may be a satiety signal. In humans, PYY inhibits food intake and gastrointestinal transit in both lean and obese subjects.

Tyrosine Kinase Peptide 1 is a control substrate peptide for c-Src assay.

Protein Kinase C Peptide Substrate acetate(120253-69-2 free base) 以依赖于第二信使和特定衔接蛋白的方式靶向特定细胞间隔物，以响应激活 g 蛋白偶联受体、酪氨酸激酶受体或酪氨酸激酶偶联受体的细胞外信号。

Tyr-Somatostatin-14 acetate(58100-03-1 free base) 是一种定制肽，可在 Somatostatin-14 中添加酪氨酸氨基酸。

Lyn peptide inhibitor acetate(222018-18-0 free base) 是一种有效的细胞渗透性 Lyn 偶联 IL-5 受体信号通路抑制剂，同时保持其他信号完整。它阻断 Lyn 活化并抑制 Lyn 酪氨酸激酶与 IL-3 GM-CSF IL-5 受体的 βc 亚基的结合。它可用于哮喘、过敏和其他嗜酸性粒细胞疾病的研究。

Tyrosyltyrosine is a dipeptide.

Epidermal Growth Factor Receptor Peptide Acetate 存在于细胞表面，通过与其特异性配体的结合而被激活。EGFR 属于受体酪氨酸激酶(RTK) 的 ErbB 家族。

Hirudin (54-65; non-sulfated) is a desulfated peptide fragment of hirudin, an anticoagulant produced byH. medicinalis.1It inhibits fibrin clot formation induced by isolated bovine thrombin with an IC50value of 3.7 μM.2 1.Niehrs, C., Huttner, W.B., Carvallo, D., et al.Conversion of recombinant hirudin to the natural form by in vitro tyrosine sulfation. Differential substrate specificities of leech and bovine tyrosylprotein sulfotransferasesJ. Biol. Chem.265(16)9314-9318(1990) 2.Payne, M.H., Krstenansky, J.L., Yates, M.T., et al.Positional effects of sulfation in hirudin and hirudin PA related anticoagulant peptidesJ. Med. Chem.34(3)1184-1187(1991)

Son of sevenless homolog 1 (Sos1) is a guanine nucleotide exchange factor (GEF) that directs the exchange of Ras-GDP to Ras-GTP by binding to SH3 domains of the growth factor receptor-bound protein 2 (Grb2), leading to the activation of ERK. Ras inhibitory peptide is a synthetic peptide that contains the sequence PVPPR, which corresponds to a region within human Sos1 that interacts with an SH3 domain of Grb2. It specifically blocks the interaction of the GEF with Grb2, preventing an interaction that is essential for Ras activation by receptor tyrosine kinases, including epidermal growth factor receptor.

Cyclo(Gly-Tyr),环(甘氨酰-L-酪氨酰),是一种环状二肽，由甘氨酸（Gly）和酪氨酸（Tyr）通过肽键首尾相连形成，具有独特的生物活性和理化性质，广泛应用于生物医学、药物研发和生物材料科学等领域。

Lyn peptide inhibitor TFA 是一种有效的，可以细胞渗透的抑制剂，抑制Lyn 偶联的IL-5受体相关信号通路，同时保持其他信号的完整。Lyn peptide inhibitor TFA 可以阻断 Lyn 的激活，抑制 Lyn 酪氨酸激酶与 IL-3 GM-CSF IL-5 受体的 βc 亚基结合。Lyn peptide inhibitor TFA 可用于哮喘、过敏等嗜酸性疾病的研究。

TAT-GluR23A Fusion Peptide 是一种肽，具有特定的生物活性。该化合物由 GluR23A 序列结合至 TAT 蛋白转导结构域（PTD），其中 GluR23A 为 GluR23Y（一种无生物活性肽，用于抑制谷氨酸受体的内吞）的突变体，其由氨基酸 869 至 877 构成，并将 Tyr 用 Ala 代替，移除了关键的磷酸化位点。

Caveolin-1 (82-101) amide (human, mouse, rat) (Caveolin-1 scaffolding domain peptide) 是抑制酪氨酸激酶的肽，可逆转多器官衰老相关的有害变化。

P60v-src(137-157)为合成抑肽，针对p60v-src酪氨酸激酶展现抑制作用(IC50: 7.5 μM)。

A11是一种细胞穿透肽，由HIV-1 Tat蛋白质转导域与对应于脂联素A1 N末端第20至30残基的11氨基酸肽连接而成。它减少脂联素A1与Eph受体酪氨酸激酶A2(EphA2)的结合，并在HK1鼻咽癌(NPC)细胞中增加EphA2的泛素化。A11（10 µM）抑制HK1和5-8F NPC细胞的增殖、迁移和侵袭。在体内，A11减少5-8F和HK1 NPC小鼠异种移植模型中的肿瘤体积。

Biotin HER-2 substrate peptide 作为HER4及HER2 NEU酪氨酸激酶的底物,其对HER2 NEU激酶域的Km值达到60 μm.

H-L-Phe(4-NH-Poc)-OH (hydrochloride) 作为一种高效的点击化学试剂,含有丙炔基氧羰基团,常简称为 Poc 或 Pryoc.该化合物在蛋白质和多肽的生物合成中用于修饰苯丙氨酸或作为 Tyr 类似物使用.它不仅可以作为标准咔嗒共轭的炔元组分,还能与 Diels-Alder 型无铜咔嗒反应中的四氮连接剂配合使用.此外,H-L-Phe(4-NH-Poc)-OH (hydrochloride) 还能作为胺、羟基和酯保护基团,稳定性良好,主要在TFA:DCM 中通过 Co2(CO)8 在室温下裂解,也有文献报告使用其他过渡金属如钯进行去保护反应.此外,该化学试剂含有 Alkyne 和 Azide 基团,可参与铜催化的叠氮-炔环加成反应(CuAAC).

Protein Kinase C Peptide Substrate targets specific cell spacers ina manner that is dependent on second messengers and specific adaptor proteins in response to extracellular signals that activate g protein-coupled receptors, tyrosine Kinase receptors, or

Tyrosine Protein Kinase JAK 2 (Phospho-Tyr8, 9) is a peptide derived from mouse JAK2, specifically composed of amino acids 475 to 491.

Tyr-Somatostatin-14 is a modified peptide incorporating an additional Tyrosine (amino acid) into the structure of Somatostatin-14.

KYL peptide is an EphA4 receptor tyrosine kinase inhibitor (Kd = 0.8 μM); inhibits EphA4-EphrinA5 interactions (IC50 = 6.34 μM). Prevents AβO induced synaptic damage, dendritic spine loss and prevents the blocking of LTP in hippocampal CA3-CA1 transmissions. Exhibits a long half life in cell culture media (8 and 12 hours in PC3 and C2C12 media respectively). Neuroprotective.

Peptide corresponding to the pp60c-src carboxy terminal regulatory domain; phosphorylated at Tyr527. Binds to pp60c-src and pp60v-src at the SH2 domain, suppressing their tyrosine kinase activity and transforming potential.

Tyrosine kinase substrate peptide