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Peptides/Peptides International/2µg/HOR-259-2µg
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Product Code: HOR-259Synonyms/Product Alternate Names: Stanniocalcin-1, STC 1, STC-1.Introduction: Stanniocalcin 1 (STC1) is the mammalian homologue of STC, which was originally identified as a calcium/phosphate-regulating hormone in bony fishes. In contrast, STC1 may play an autocrine and paracrine role with pleiotropic effects in mammals. It is expressed in a wide variety of tissues, but unexpectedly is not detected in the circulation under normal circumstances, which is possibly caused by its attaching to soluble and tethered forms of a high-affinity binding protein. STC-1 can affect calcium homeostasis, bone and muscle mass and structure, and angiogenesis through effects on osteoblasts, osteoclasts, myoblasts/myocytes, and endothelial cells in mouse model. Differential regulation of myocardial STC1 protein expression was reported in heart failure. In addition, STC1 may regulate calcium currents in cardiomyocytes and may contribute to the alterations in calcium homeostasis of the failing heart. STC1 was found to be a selective modulator of hepatocyte growth factor (HGF)-induced endothelial migration and morphogenesis, an inhibitor of macrophage chemotaxis and chemokinesis, suppressor of progesterone and luteinization inhibitor. Together with STC-2, it may play important roles in the processes of implantation and decidualization in the rat. In terminally differentiated adipocytes, it may function as a "survival factor", which contributes to the maintenance of the integrity of mature adipose tissue. In context with its possible role in gestation, a Big STC, a three highermolecular- mass variant has been described. STC1 was identified as one of hypoxia-responsive genes coupled to hypoxia-driven angiogenesis.Current research indicates that STC-1 might be a useful molecular marker to detect tumor cells in blood and bone marrow from patients with various types of malignancies.Description: Stanniocalcin-1 Human Recombinant produced in 293 cell line is a single, glycosylated, polypeptide chain containing 240 amino acids and having a total molecular mass of 25.9 kDa. The Stanniocalcin contains two extra residues which were used as a spacer and 8 residues form the C-Terminal Flag- tag.Stanniocalcin is purified by proprietary chromatographic techniques.The amino acid sequence of the recombinant human Stanniocalcin-1 is 100% homologous to the amino acid sequence AA 18-247 of the human mature Human Stanniocalcin-1.Physical Appearance: White lyophilized (freeze-dried) powder.Formulation: Filtered (0.4µm) and lyophilized in 0.5mg/ml in 20mM Tris buffer, 50mM NaCl, pH 7.5.Solubility: Add deionized water to a working concentration approximately 0.5mg/ml and let the lyophilized pellet dissolve completely. Product is not sterile! Please filter the product by appropriate sterile filter before using it in the cell culture.Stability: Lyophilized STC-1 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Stanniocalcin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.Purity: Greater than 95.0% as determined by SDS-PAGE.For LABORATORY RESEARCH USE ONLY. They may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.Origin: 293 cell line (Human embryonic kidney).Storage Conditions: -20 °COne-Letter Code:THEAEQNDSV SPRKSRVAAQ NSAEVVRCLN SALQVGCGAF ACLENSTCDT DGMYDICKSF LYSAAKFDTQ GKAFVKESLK CIANGVTSKV FLAIRRCSTF QRMIAEVQEE CYSKLNVCSI AKRNPEAITE VVQLPNHFSN RYYNRLVRSL LECDEDTVST IRDSLMEKIG PNMASLFHIL QTDHCAQTHP RADFNRRRTN EPQKLKVLLR NLRGEEDSPS HIKRTSHESA ASDYKDDDDKDelivery Details: All quantities are subject to availability. Please allow 7-10 days for delivery.Custom QuoteBulk Qty Request FormView All Recombinant ProteinsPeptides International Certified To ISO 9001:2015© 2020 Peptides International. All rights reserved.Sitemap Site Info Contact Links NewsADS/CofAOOHnado_blizzardCreated with Sketch.
现代营养学研究发现:人类摄食蛋白质经消化道的酶作用后,大多是以低肽形式消化吸收的,以游离氨基酸形式吸收的 比例很小。进一步的试验又揭示了肽比游离氨基酸消化更快、吸收更多,表明肽的生物效价和营养价值比游离氨基酸更高。这也正是活性肽的无穷魅力所在。
生物活性肽(Bioact ive Peptide s ,BA P)就是对生物机体的生命活动有益或是具有生理作用的肽类化合物, 是一类相对分子质量小于6000Da , 具有多种生物学功能的多肽。其分子结构复杂程度不一,是介于氨基酸与蛋白质之间的分子聚合物,小至由两个氨基酸组成,大至由数十个氨基酸通过肽键连接而成,而且这些多肽可通过磷酸化、糖基化或酰基化而被修饰 [1]  。
生物活性肽有多种多样的生理功能, 如激素作用、免疫调节、抗血栓、抗高血压、降胆固醇、抑菌、抗病毒、抗癌作用等 [2]  。这些功能是原蛋白质或组成氨基酸所不具备的独特的生理机能, 且许多活性肽的组成氨基酸并不一定是必需氨基酸,这就为利用蛋白质资源, 特别是那些原本认为生物效价不高的蛋白质资源利用提供了新的机遇,是当前国际食品界最热门的研究课题和极具发展前景的功能因子。20世纪末,科学家在破解基因的秘密的同时,也对存在于生物体内的另一类奇妙物质的研究发生极大的兴趣。这类物质就是生物活性,或称功能肽,由氨基酸组成,是一种小分子的蛋白质,比如胰岛素,就是一种多肽,再如在日本应用广泛的促进钙吸收的CCP,在欧美风靡一时的促进生长的HGH……。
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