北京春达科技有限公司作者
PolyLC公司专业开发和生产用于蛋白质、多肽和其他生物大分子分析的反相液相色谱产品,其中多肽基涂层固定相能够分离许多用其他方法分离不了的混合物。PolyLC公司的产品线包括以下色谱柱和柱芯:
PolyCAT A™:
POLYCAT A™是通过连接聚(天冬氨酸)共价结合的二氧化硅制成。这种多肽涂层洗脱蛋白质出峰尖锐且拖尾小。结合能力和恢复能力高。POLYCAT A™是蛋白阳离子交换色谱柱,能够分析蛋白质变体、血红蛋白变异体、单克隆抗体、组蛋白等。如:
Effect of urea on cation-exchg of lysozyme.尿素对*阳离子交换的影响;Cation-ex. of ACTH.促肾上腺皮质激素的阳离子交换;Purif. of N-Glycosidase F. N-糖苷酶F的纯化;Separation of three forms of rh-Interleukin-2 using organic solvent in the phase. 三种形式Rh-白细胞介素-2的分离;Characterization of synthetic human relaxin.合成人松弛素;Affinity-style isoln. of an L-Isoaspartyl Protein Carboxyl Methyltransferase.L-异门冬氨酰蛋白羧基甲基转移;Screening cord blood for hemoglobinopathies and thalassemia.脐血血红蛋白病和地中海贫血;Purif. of single-chain anti-fluorescein antibody单链抗荧光素抗体;Purif. of recombinant κ-Bungarotoxin.重组κ-银环蛇毒素;Analysis of prohormone versions of β-endorphin and γ-lipotropin.β-内啡肽和γ-促脂素的激素原版本; QC analysis for deamidated variant of a recombinant fusion protein of basic fibroblast growth factor-saporin mitotoxin.碱性成纤维细胞生长因子 - 皂草素maitotoxin; Isoln. of phosphorylated Lys-C fragments of linker histones from Tetrahymena.四膜虫组蛋白的磷酸化赖氨酸-C片段;Purif. of a Fe-S cluster transcription factor protein, FNR, from E. coli .Fe-S簇的转录因子蛋白,FNR;Purif. of restriction endonuclease Hpy188I from Helicobacterpylori.来自幽门螺杆菌的限制性内切酶Hpy188I;Designer transmembrane peptide purified with an acetic acid gradient.跨膜肽纯化;Acetic acid gradient used to purify peptides that interact with membrane proteins.肽乙酸梯度;Purif. of conjugate of poly(Lys) with asialoorosomucoid as a virus carrier (used HOAc gradient).非唾液血清类粘蛋白;
PolySULFOETHYL A™
这种强阳离子交换(SCX)材料是专门为肽液相色谱开发的。在pH值2.7-3.0是,肽失去( - )电荷,得到(+)电荷。因此,PolySULFOETHYL A™是一种通用的替代反相(RPC),肽的分馏是通过电荷差异而不是极性差异。PolySULFOETHYL A™亲水性高。这zui大限度地减少了与肽的疏水相互作用,具有较高的回收率,减少峰拖尾。其容量也高,从而使得从*消化物分离弱碱性的肽具有更好的保留。这样的离子交换材料的容量是与之相当的RPC柱的4倍。因此,离子交换应该是一个多步骤纯化的初始步骤。PolySULFOETHYL A™是肽阳离子交换色谱柱,主要分析多维蛋白质纯化、多肽的分离纯化、表征抗体等,如:
Selective isolation of disulfide-linked peptides from trypticdigests.*消化物、二硫键连接的肽; Isoln. of disulfide-linked peptides from aggregating cartilege proteoglycan.聚合软骨组织蛋白多糖;SCX of tryptic digest of human liver glutamic g-Semi-al dehyde Dehydrogenas.人肝谷氨酰G-半醛脱氢酶的*消化;Purif. of synthetic peptide fragments of Nerve Growth Factor which inhibit NGF.神经生长因子; Purif. of peptides for sequencing from digest of UDP-glucose dehydrogenase.UDP-葡萄糖脱氢酶; Isoln. of plasminogen fragments covalently linked (γ-Glu →ε-Lys) by transglutaminase treatment.纤维蛋白溶酶原片段、转*酶处理链接、(γ-*→ε-赖氨酸; Isoln. via SEC-SCX-RPC of a 17-residue peptide mediating glycolipid-induced tobacco protoplast proliferation in vitro.烟草原生质体增殖;Purif. of cobalt complexes of zinc finger peptides.锌指肽;Isoln. and ident. of cyclic imide and deamidation products of pramlintide.环状酰亚胺和脱酰胺;Proteomic analysis of human cilia. 人类纤毛;Isoln. of the disulfide-linked tryptic fragment from NS1 protein from Murray Valley encephalitis virus via RPC-SCX.二硫键连接的*消化片段、墨累谷脑炎病毒;Proteomics of Arabidopsis thaliana chloroplast membranes:ID of 392 proteins via offline SCX-RPC-MS.拟南芥叶绿体膜;Proteomics of ubiquitination in yeast: ID of 1,075 proteins with 110 ubiquitination sites.酵母中的泛素化; Proteomics of mouse liver mitochondrial inner membrane; ID of 182 proteins.小鼠肝线粒体内膜;Isoln. from calf lens protein of a pyridinium deriv. of lysine .赖氨酸、吡啶衍生物;Analysis of urinary peptides.泌尿肽;Purif. of enteric β-defensin.肠道β-防御素;Riboproteomics of Hepatitis C virus ribosomal entry site.丙型肝炎病毒核糖体进入位点;Proteomics of membrane proteins from breast cancer cell lines MCF7 and BT474.乳腺癌细胞系MCF7和BT474;Proteomics of neoplastic prostate epithelium.肿瘤前列腺上皮细胞;RPC-SCX-RPC proteomics analysis of P. gingivalis bacteria.牙龈细菌;ICAT analysis of proteins from healthy & infected Atlantic salmon.大西洋鲑鱼; Identification of proteins secreted by human neonatal fibroblasts .新生儿成纤维细胞;In-process assay for purity of a recombinant fragment of botulinum neurotoxin.肉毒杆菌神经毒素;
PolyHYDROXYETHYL A™
这种中性,极性材料是为亲水作用色谱(HILIC)专门开发的。 HILIC是用极性固定相和部分水相流动相进行正相色谱法的一种变型。这允许肽,核酸,碳水化合物,某些蛋白质和极性溶质在一般的正常相分离。与用于HILIC其他材料相比,PolyHYDROXYETHYL A™能提供更尖锐的峰和更好的选择性及回收效率。其高极性使得有机溶剂的保留更不易。PolyHYDROXYETHYL A™是亲水作用色谱柱, 能够分析多维蛋白质纯化、多肽的分离纯化、表征抗体等,
如:Lactic acid stimulates B-cell growth.乳酸刺激B-细胞的生长;HILIC of phosphorylated peptides and tyrosine kinase reaction mixtures.磷酸化肽和*激酶;HILIC of methylphosphonate oligonucleotides.甲基膦寡核苷酸; Assay of ATPase activity by HILIC.ATP酶活性的筛查;HILIC of phosphorylated peptides from tyrosine kinase reactions.磷酸化肽来自*激酶反应;Isoln. by RPC/HILIC of a diuretic hormone polypeptide from mealworm (T. molitor ).利尿激素多肽、黄粉虫;Purif. and analysis of the scrapie prion protein (using PolyWAX LP) [same ref. as W5].羊痒病朊病毒;HILIC of coeluting glycopeptides from an RPC map of a tryptic digest of recombinant γ-interferon from a CHO cell culture.共洗脱糖肽、重组γ-干扰素、CHO细胞培养物、*消化物;CEX-HILIC detects substitutions on the polar face of amphipathic α-helical peptides,两亲性α-螺旋肽;HILIC of small, polar peptide products from a high-affinity urokinase substrate library.高亲和性*;HILIC of urea, allantoin, and lysine pyroglutamate in cosmetics.尿素,*、化妆品中的赖氨酸,焦*;Kluwer Academic Publishers; Dordrecht, The Netherlands. HILIC of hydroxypropyl cyclodextrins.羟丙基环糊精;HILIC analysis and SPE extraction of avoparcin from kidney extracts.肾脏提取物、固相萃取阿伏霉素;Purification of sugar pyrazolone derivs.吡唑啉酮衍生物; HILIC-MS/MS of nicotine and its metabolites in serum or urine.烟碱和其在血清或尿液中的代谢物;Purif. of lipoglycopeptide antibiotics by HILIC.脂糖肽类抗生素;HILIC isoln.: Adenosine is pituitary cytotropic factor.腺苷是垂体细胞亲和性因子;HILIC of free amino acids in casein hydrolyzates [in Portuguese].酪蛋白水解物;
PolyGLYCOPLEX™
这种中性物质在HILIC模式保留复杂碳水化合物具有非常高的容量。尽管带电的碳水化合物可能需要加入适量的盐,如乙酸铵,但柱子可以频繁的只用乙腈和水做流动相时操作。这些条件对碳水化合物或直接流动到质谱仪的组分的隔离方便。选择性对于天然多糖及其衍生物,如那些带2 - 氨基吡啶(PA-)的荧光基团来说都很好。寡糖混合物,通常可以等浓度解决,虽然梯度分离被*可分离大多数样品。酸化的唾液和去唾液酸-聚糖可以使用相同的运行条件来解决。PolyGLYCOPLEX™是复杂碳水化合物色谱柱,可以分析聚糖及其衍生物、复合碳水化合物等。
PolyPROPYL A™、PolyMETHYL A™ 、PolyETHYL A™
HIC材料分离蛋白质建立在疏水特征的基础上,就像RPC一样。然而,HIC采用*的水性缓冲液,保留三级结构和生物活性。选择性一般优于RPC,用于蛋白质和多肽足够高,有显著二级或三级结构。通常,盐样品洗脱呈下降梯度,如硫酸盐或磷酸盐。蛋白质洗脱是为了提高表面的疏水性。如果必要表面活性剂(例如,CHAPS,辛基葡萄糖苷)可以被添加到所述移动相。PolyPROPYL A™, PolyETHYL A™ 和 PolyMETHYL A™的相对疏水性为100,60和15,RESP。 HIC具有比其它模式修饰或残基位置差异,尤其是涉及一种非极性基团(但不一定)时具有更高的灵敏度。PolyPROPYL A™、PolyMETHYL A™ 、PolyETHYL A™是蛋白和多肽的疏水相互作用色谱柱,分析多维蛋白质纯化、多肽的分离纯化、表征抗体等,如:
Purif. of a new class (Theta) of glutathione transferases.*转移酶;Purif. of plaet aggregation inhibitors from snake venoms.来自蛇毒液的血小板聚集抑制剂;Sepn. of prostate-specific human kallekrein 2 from its proform.人类*2;Isoln. of rat spermatozoa surface glycoprotein in 95% purity with a single HIC step.大鼠精子表面糖蛋白;Isoln. of rat epididymal GPI glycoprotein CD52.大鼠附睾磷脂糖蛋白; Purif. of PEGylated Interleukin-1.聚乙二醇化的白介素-1的纯化;Purif. in semi-RPC mode of insulin with palmitoyl group on Nterm. of beta-chain.胰岛素、棕榈酰基;
PolyWAX LP™
大多数蛋白质等电点都低于7,进行纯化或通过阴离子交换色谱法分析。 POLYWAXLP™是亲水性弱阴离子交换柱,是PolyLC为酶和其它蛋白质的液相色谱而生产的耗材。其选择性优良,具有应用生物活性的高效和定量回收特性。大多数基于聚亚乙基亚胺(PEI)的阴离子交换材料都是由传统的支化的聚合物制备的。 PolyWAX LP™是蛋白阴离子交换色谱柱,分析酸性蛋白质、多肽、蛋白组学、小型阴离子交换,酸性溶质等,如:
Purif. of acid-labile subunit (ex human serum) from insulinlike growth factor binding complex.胰岛素样生长因子;Purif. and analysis of the scrapie prion protein (same ref. As H40).羊痒病朊病毒蛋白;Analysis of phosphorothioate oligonucleotide analogs.硫代磷酸酯寡核苷酸;Purif. of circular oligonucleotides.
环形寡核苷酸的纯化。
PolyLC公司可以提供zui艰难的生化分离技术服务。
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