CN109796516B - 一组天然与非天然的原人参三醇型人参皂苷的合成方法 - Google Patents
一组天然与非天然的原人参三醇型人参皂苷的合成方法 Download PDFInfo
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Abstract
本发明公开了一种生物催化合成天然与非天然的原人参三醇型人参皂苷的方法,本发明以原人参三醇(protopanaxatriol,PPT)为底物,以糖基转移酶为催化剂,可高效催化原人参三醇的C3位、C6位和C12位羟基糖基化,从而生成多种天然与非天然的原人参三醇型人参皂苷。本发明还公开了一种利用蔗糖合成酶和糖基转移酶偶联反应催化原人参三醇合成多种天然与非天然原人参三醇型人参皂苷的方法,该方法可以以廉价的蔗糖和少量尿苷二磷酸为反应的辅因子即可实现昂贵的尿苷二磷酸葡萄糖的循环再生,从而以更加高效且廉价的方式催化原人参三醇合成多种天然与非天然的原人参三醇型人参皂苷。
Description
技术领域
本发明属于生物技术和植物学技术领域,涉及一组天然与非天然原人参三醇型人参皂苷及其制备方法,具体涉及一种利用糖基转移酶和蔗糖合成酶偶联反应催化原人参三醇(protopanaxatriol,PPT)生成多种天然与非天然人参皂苷的方法及应用。
背景技术
人参(Panax ginseng C.A.Mayer)为五加科多年生宿根植物,是我国传统的名贵中草药,具有抗癌、抗肿瘤、抗晒老、提高免疫等多种生理功效,冠有“百草之王”的美誉。
人参皂苷是人参的主要活性物质,是由苷元与糖基连接构成的糖苷类化合物。根据苷元的不同,主要分为原人参二醇型人参皂苷和原人参三醇型人参皂苷。目前已从不同的人参品种中分离鉴定了包括人参皂苷Rh1、F1和Rg1在内的20余种原人参三醇型人参皂苷单体,这些原人参三醇型人参皂苷均以原人参三醇作为配糖体苷元,糖基(如葡萄糖、木糖、鼠李糖等)通过β糖苷键连接在原人参三醇的C6和C20位羟基上,而原人参三醇的C3位和C12位羟基不被糖基化修饰。
糖基化反应是人参皂苷生物合成途径中最后一步修饰作用,通过糖基化作用将糖基供体(如UDP-葡萄糖、UDP-木糖等)的糖基连接到原人参三醇的C6和C20位羟基上从而生成包括人参皂苷Rh1、F1和Rg1等在内的数十种原人参三醇型人参皂苷。鉴于糖基化反应对原人参三醇型人参皂苷结构及生理活性多样性的形成至关重要,因此,通过糖基化作用对原人参三醇的非天然糖基化位点(C3位羟基和C12位羟基)进行糖基化修饰,将为合成多种具有独特生理和药理活性的新型人参皂苷奠定基础。
糖基化可通过化学催化和生物催化两种方式实现,但是化学法存在立体选择性差、副反应多、污染大、产物得率低等限制因素;而糖基转移酶(UDP-glycosyltransferase,UGT,EC 2.4.1.17)催化的糖基化反具有催化效率高、区域以及立体选择性强、产物纯化简单等特点,在新型人参皂苷的生物合成中具有巨大的应用潜力。目前,已从人参中挖掘获得多个糖基转移酶,这些植物来源的糖基转移酶可专一性催化原人参三醇的C6和C20为羟基糖基化生产人参皂苷Rh1、F1和Rg1。与植物来源糖基转移酶相比,微生物来源糖基转移酶具有异源表达水平高、可溶性表达好、底物谱广、催化活性高、区域选择性差等特点,从而可以催化原人参三醇不同羟基位点糖基化合成多种天然与非天然原人参三醇型人参皂苷,这些非天然的原人参三醇型人参皂苷可能具有多种新的且更高的生理和药理活性。
发明内容
本发明针对目前所存在的缺陷及不足,提供一种天然与非天然原人参三醇型人参皂苷及其制备方法,通过所述方法,将糖基转移酶与蔗糖合成酶偶联,从而实现以廉价的蔗糖为葡萄糖糖基供体,以原人参三醇为糖基受体,高效催化原人参三醇糖基化生产多种天然与非天然的人参皂苷的方法
本发明目的之一是提供一种人参皂苷,其特征在于,所述人参皂苷具有式I所示结构;
其中:R1、R2和R3代表1个葡萄糖残基或者H原子。
在优选的实施方式中,所述的人参皂苷,其特征在于,所述人参皂苷具有式II或式III或式IV所示结构:
本发明目的之二是提供一种制备本发明目的之一所述的任意一种人参皂苷或人参皂苷Rh1的方法,其特征在于,糖基转移酶催化原人参三醇(protopanaxatriol,PPT)和尿苷二磷酸葡萄糖反应生成人参皂苷;所述糖基转移酶为糖基转移酶Bs-YjiC,其氨基酸序列如SEQ ID NO.1或与其具有85%同源性,优选95%同源性,更优选99%同源性的氨基酸序列。
本发明目的之三是提供一种糖基转移酶Bs-YjiC在催化原人参三醇生产本发明目的之一所述的任意一种人参皂苷或人参皂苷Rh1中的应用。
本发明目的之四是提供一种制备本发明目的之一所述的任意一种人参皂苷或人参皂苷Rh1的催化反应体系,其特征在于,所述催化反应体系包括原人参三醇、蔗糖、蔗糖合成酶、糖基转移酶和尿苷二磷酸。
在优选的实施方式中,所述的催化体系,其特征在于,所述糖基转移酶为糖基转移酶Bs-YjiC;优选地,所述糖基转移酶Bs-YjiC的编码基因来源于枯草芽孢杆菌和/或其突变体;优选地,所述糖基转移酶Bs-YjiC的氨基酸序列如SEQ ID NO.1或与其具有85%同源性,优选95%同源性,更优选99%同源性的氨基酸序列。
在更优选的实施方式中,所述的催化体系,其特征在于,所述蔗糖合成酶来源于拟南芥、大豆、亚硝酸单胞菌或嗜酸性喜温硫杆菌中的任意一种或至少两种的组合,优选为拟南芥、大豆或嗜酸性喜温硫杆菌中的任意一种或至少两种的组合;优选地,所述蔗糖合成酶的氨基酸序列如SEQ ID NO.2-6中的任意一种或与SEQ ID NO.2-6中的任意一种具有85%同源性,优选95%同源性,更优选99%同源性的氨基酸序列。
在更优选的实施方式中,所述的催化体系,其特征在于,所述蔗糖合成酶为来自拟南芥的蔗糖合成酶AtSuSy,其氨基酸序列如SEQ ID NO.2所示。
在最优选的实施方式中,所述的催化体系,其特征在于,所述糖基转移酶的浓度为1mU/mL-1000mU/mL,蔗糖合成酶的浓度为1mU/mL-1000mU/mL。
在具体实施方式中,所述的催化体系,其特征在于,所述糖基转移酶的浓度为160mU/mL,蔗糖合成酶的浓度为200mU/mL。
本发明目的之五是,糖基转移酶Bs-YjiC在催化原人参三醇生产目的之一所述任意一种人参皂苷或人参皂苷Rh1的用途,所述原人参三醇以及合成的天然与非天然原人参三醇型人参皂苷的结构式如图1所示。
本发明的目的之六是提供一种催化原人参三醇合成目的之一所述任意一种人参皂苷或人参皂苷Rh1的合成方法,其特征在于,以原人参三醇为底物,以尿苷二磷酸葡萄糖为糖基供体,利用底物专一性以及区域选择性较差的糖基转移酶为催化剂,催化原人参三醇(protopanaxadiol)的C3位、C6位和C12位羟基糖基化,从而合成目的之一所述天然与非天然的原人参三醇型人参皂苷。所述原人参三醇以及合成的天然与非天然原人参三醇型人参皂苷的结构式如图1所示;所述的天然与非天然原人参三醇型人参皂苷的合成方法,其特征在于,原人参三醇可从人参、西洋参、三七等人参属植物中提取获得、人参皂苷水解获得、微生物工程菌发酵获得或者这些方式组合获得,糖基化反应体系包括,所述原人参三醇为浓度0.1-10mM,所述糖基转移酶为0.1mU-100mU/mL;酶反应的温度为20-60℃,缓冲液pH设定为5-9,反应体系中可以选择无添加金属离子,也可以添加Mg2+和Mn2+,反应时间为0.1h-48h;优选的所述原人参三醇浓度为2mM,所述糖基转移酶为5mU/mL;酶反应的温度为35℃,缓冲液pH设定为8.0,反应体系中添加10mM的MgCl2,反应时间为0.5h。
本发明目的之七是提供一种糖基转移酶Bs-YjiC,该糖基转移酶来自枯草芽孢杆菌Bacillus subtilis 168,Bs-YjiC可以催化原人参三醇(protopanaxadiol)的C3位、C6位和C12位羟基糖基化,从而合成目的之一所述天然与非天然的原人参三醇型人参皂苷,所述原人参三醇以及合成的天然与非天然原人参三醇型人参皂苷的结构式如图1所示。糖基转移酶Bs-YjiC的核酸序列如序列表SEQ ID No 1所示,本发明包括序列表SEQ ID No 1所示核酸序列总一部分取代、插入或则缺失等全部情况,优选的与SEQ ID No 1所示核酸序列的同源性有70%以上、更优选80%以上、进一步优选有90%以上同源性核酸序列;糖基转移酶Bs-YjiC的氨基酸序列如序列表1所示,本发明包括序列表中序列2的氨基酸中一部分被取代、插入或缺失等全部情况,优选包含具有与序列表中序列2的氨基酸序列有70%以上、更优选有80%以上、进一步优选有90%以上同源性的氨基酸序列。该酶可以通过构建表达载体,转化至若干宿主菌株中进行表达与纯化,所选择的宿主菌株包括大肠杆菌、酵母菌、枯草芽孢杆菌、乳酸菌、谷氨酸棒杆菌等,优选大肠杆菌、谷氨酸棒杆菌、枯草芽孢杆菌和酵母菌进行表达。
与现有技术相比,本发明利用微生物来源糖基转移酶Bs-YjiC为催化剂,以原人参三醇为底物,催化原人参三醇(protopanaxadiol)的C3位、C6位和C12位羟基糖基化,从而合成人参皂苷Rh1(产物4)以及非天然人参皂苷3-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物5)、3-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxadiol(产物3)、3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物2)和3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物1)。鉴于糖基化是人参皂苷合成途径中最重要的合成步骤,且对人参皂苷药理及结构多样性的形成至关重要,因此利用本发明挖掘的糖基转移酶Bs-YjiC催化原人参三醇合成的多种天然与非天然原人参三醇型人参皂苷极大的丰富了人参皂苷的种类,这些人参皂苷可能同其它天然人参皂苷一样具有多种独特的药理活性。另外,本发明利用糖基转移酶Bs-YjiC和蔗糖合成酶作为偶联催化剂,以廉价的蔗糖作为糖基供体,从而可以在体外高效合成1.7g/L人参皂苷Rh1(产物4)以及1.5g/L非天然人参皂苷3-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物5)、5.8g/L非天然人参皂苷3-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxadiol(产物3)、0.25g/L的非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物2)和0.38g/L非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物1),该反应只需12h即可完成,而酵母工程菌发酵7天生成人参皂苷Rh1和F1的产量分别仅为93mg/L和42mg/L;本发明可极大的提高所述天然与非天然人参皂苷的生产效率以及产量,有助于降低本发明中所述天然与非天然原人参三醇型人参皂苷的生产成本,从而为所述天然与非天然原人参三醇型人参皂苷的工业化生产奠定基础。
本发明中的相关定义:
天然人参皂苷Rh1命名为产物4,具有以下结构式:
非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxatriol命名为产物1,具有以下结构式:
非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol命名为产物2,具有以下结构式:
非天然人参皂苷3-O-β-D-glucopyranosyl-12-O-D-glucopyranosyl-20(S)-protopanaxadiol命名为产物3,具有以下结构式:
非天然人参皂苷3-O-β-D-glucopyranosyl-20(S)-protopanaxatriol命名为产物5,具有以下结构式:
糖基转移酶Bs-YjiC为氨基酸序列为SEQ ID NO:1的酶。
蔗糖合成酶AtSuSy为氨基酸序列为SEQ ID NO:2的酶。
下面结合具体实施例对本发明做进一步详细说明。
附图说明
图1为原人参三醇及其糖基化产物结构式。
图2为糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联催化原人参三醇糖基化过程示意图。
图3为糖基转移酶Bs-YjiC和蔗糖合成酶的表达与纯化后的SDS-PAGE蛋白胶图。
图4为高效液相色谱-质谱联用分析糖基转移酶Bs-YjiC催化原人参三醇糖基化产物图。
图5为高效液相色谱分析糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应催化原人参三醇糖基化产物图。
图6为糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应催化原人参三醇合成天然与非天然原人参三醇型人参皂苷的产物积累曲线。
具体实施方式
为进一步阐述本发明所采取的技术手段及其效果,以下结合实施例对本发明作进一步地说明。可以理解的是,此处所描述的具体实施方式仅仅用于解释本发明,而非对本发明的限定。
实施例中未注明具体技术或条件者,按照本领域内的文献所描述的技术或条件,或者按照产品说明书进行。所用试剂或仪器未注明生产厂商者,均为可通过正规渠道商购获得的常规产品。
以下结合实施例进一步详述本发明。
本发明及实施例中提到的百分比浓度如无特别说明均为质量/质量(W/W,单位g/100g)百分比浓度,质量/体积(W/V,单位g/100mL)百分比浓度,体积/体积(V/V,单位mL/100mL)百分比浓度,和摩尔浓度(mM)。
下述实施例中所用方法如无特别说明均为常规方法,具体步骤可参见:《Molecular Cloning:A Laboratory Manual》(Sambrook,J.,Russell,David W.,Molecular Cloning:A Laboratory Manual,3rd edition,2001,NY,Cold SpringHarbor)。
各实施例中所用相同名称的材料或试剂如无特别说明即为相同的。实施例中描述到的各种生物材料的取得途径仅是提供一种实验获取的途径以达到具体公开的目的,不应成为实施本发明时对生物材料来源的限制。事实上,所用到的生物材料的来源是广泛的,任何不违反法律和道德伦理能够获取的生物材料都可以按照实施例中的提示替换使用。
本发明中所用引物由江苏金唯智生物技术有限公司合成。
实施例在以本发明技术方案为前提下进行实施,给出了详细的实施方式和具体的操作过程,实施例将有助于理解本发明,但是本发明的保护范围不限于下述的实施例。
本发明中酶活性测定方法及酶活性单位定义如下:
蔗糖合成酶酶活性测定:在200μL反应体系中含有蔗糖合成酶(10μg),UDP(0.5mM),蔗糖(300mM),Tris-HCl缓冲液(50mM,pH 7.5),30℃水浴反应0.5h,快速煮沸5min,终止反应,进行高效液相色谱检测果糖的生成。蔗糖合成酶酶活性单位(U)定义为,每微克蔗糖合成酶每分钟催化蔗糖水解所生成的果糖的微摩尔含量。
糖基转移酶酶活性测定:在200μL反应体系中含有原人参三醇(1mM),尿苷二磷酸葡萄糖(5mM),Tris-HCl缓冲液(50mM,pH 7.5),3μg糖基转移酶Bs-YjiC,35℃水浴反应0.5h,加入200μL甲醇终止反应,进行高效液相色谱检测原人参三醇的消耗量。糖基转移酶酶活性单位(U)定义为,每微克糖基转移酶每分钟所消耗的原人参三醇的微摩尔含量。
实施例1、糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy的克隆、表达与纯化
糖基转移酶Bs-YjiC和蔗糖合成酶AtSuSy在NCBI(https://www.ncbi.nlm.nih.gov/)的基因登入号分别为NP_389104和NM_001036838,以枯草芽孢杆菌Bacillus subtilis 168的基因组DNA为模板,利用Bs-YjiC-F和Bs-YjiC-R引物对扩增糖基转移酶Bs-YjiC基因;以拟南芥的cDNA为模板,利用At-SuSy-F和AtSuSy-R引物对扩增蔗糖合成酶AtSuSy。所用引物的核苷酸序列如下(下划线部分为限制性内酶位点):
Bs-YjiC-F:5′-CGCGGATCCATGAAAAAGTACCATATTTCGAT-3′(BamHI酶切位点)
Bs-YjiC-R:5′-CGCGTCGACTTACTGCGGGACAGCGGATTTT-3′(SalI酶切位点)
AtSuSy-F:5′-GCGTCGACAAATGGCAAACGCTGAACGTATGATAA-3′(SalI酶切位点)
AtSuSy-R:5′-TTGCGGCCGCTTATCATACGTTCAGCGTTTGCCAT-3′(NotI酶切位点)
利用DNA连接酶将糖基转移酶Bs-YjiC基因和蔗糖合成酶AtSuSy基因分别插入到经相同的限制性内切酶处理的pET32a表达载体中,构建重组载体pET32-Bs-YjiC和pET32-AtSuSy。然后将重组质粒pET32-Bs-YjiC和pET32-AtSuSy转化至大肠杆菌E.coli BL21(DE3)感受态细胞中并诱导目的蛋白的表达;糖基转移酶Bs-YjiC和蔗糖合成酶AtSuSy的诱导条件为:在含有100μg/L氨苄青霉素或卡那霉素的LB液体培养基中(10g/L NaCl,10g/L蛋白胨和5g/L酵母粉),37℃培养3~4h至菌体OD600为0.6~0.8,加入IPTG至终浓度为0.3mM后,16℃、200r/min培养16-20h以诱导目的蛋白的表达。然后,离心收集含有目的蛋白的菌体并将菌体用缓冲液(25mmol/L Tris-HCl,pH 7.0)悬浮,然后通过高压破碎使菌体裂解,利用配备了镍离子亲核层析柱的AKTA Purifier系统对目的蛋白进行纯化收集,通过SDS-PAGE蛋白电泳分析目的Bs-YjiC和AtSuSy的表达情况及纯度。如SDS-PAGE蛋白胶所示(图3),重组糖基转移酶Bs-YjiC和蔗糖合成酶均为可溶性表达,目的蛋白主要位于细胞破碎液的上清中,糖基转移酶Bs-YjiC的大小约为62kDa,而蔗糖合成酶的大小约为110kDa,而表达了空质粒的重组菌株相比则没有相应蛋白条带。另外,SDS-PAGE蛋白胶的结果表明镍柱亲核层析可纯化获得纯度超过95%的糖基转移酶Bs-YjiC和蔗糖合成酶AtSuSy。
实施例2、糖基转移酶Bs-YjiC催化原人参三醇糖基化
按照实施例1所述步骤分离纯化糖基转移酶Bs-YjiC,糖基转移酶Bs-YjiC催化原人参三醇糖基化的反应体系包括:2mM原人参三醇,10mM尿苷二磷酸葡萄糖,50mM Tris-HCl(pH 7.5),10mM MgCl2,和5mU/mL糖基转移酶Bs-YjiC,35℃反应0.5h。
反应完成后,加入等体积的甲醇终止反应,然后12000rpm离心10min,取上清液经0.22μm滤膜过滤后,加入液相瓶中,通过高效液相色谱以及高效液相色谱-质谱联用仪对糖基化产物进行分析与鉴定。高效液相色谱的分析条件为:流动相A为0.1%(v/v)甲酸的蒸馏水,流动相B为含有0.1%(v/v)甲酸的色谱乙腈,色谱柱为购买自上海月旭科技公司的C18色谱柱(4.6mm×250mm,5μm particle),进样量为20μL,梯度洗脱条件为0-25min,25%B-85%B,25min-45min,85%B,紫外检测器,检测波长为203nm,流动相的流速为1mL/min,柱温箱为35℃。质谱仪型号为配备了ESI离子源的Bruker miroOTOF-II质谱仪,扫描范围为100-1000Da,正离子模式,喷射电压为4500V,氮气流速为6mL/min,氮气温度为180℃
如图4所示,高效液相色谱分析表明糖基转移酶Bs-YjiC可催化原人参三醇生成5个产物;进一步利用高效液相色谱-质谱联用仪对这5个产物进行分析表明,这个五个产物的分子量分别为:产物1([M+H]+m/z+~963.5477),产物2([M+H]+m/z+~801.4994),产物3([M+H]+m/z+~801.4974),产物4([M+H]+m/z+~639.4437),和产物5([M+H]+m/z+~639.4438),而原人参三醇的分子式为C30H52O4,理论分子量为[M+H]+m/z+~477.3938);说明产物1为原人参三醇加上3个葡萄糖分子的糖基化产物,产物2和3为原人参三醇加上2个葡萄糖分子的糖基化产物,产物4和5为原人参三醇加上一个葡萄糖分子的糖基化产物。
利用Bruker 600MHz核磁共振仪对这5个产物进行结构鉴定,分别采集这5个产物的一维核磁谱(1H和13C)以及二维核磁谱(HSQC、HMBC和COSY),经过核磁谱的分析与鉴定,产物1为3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxatriol、产物2为3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol,产物3为3-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxadiol、产物4为人参皂苷Rh1(6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol)、产物5为3-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(图1)。这5个产物,除产物4(人参皂苷Rh1)为天然人参皂苷以外,其它4个产物均为非天然的原人参三醇型人参皂苷。糖基化对人参皂苷药理活性及结构多样性的形成至关重要,本发明利用糖基转移酶Bs-YjiC催化原人参三醇合成的多种天然与非天然原人参三醇型人参皂苷极大的丰富了人参皂苷的种类,这些非天然的原人参三醇人参皂苷可能同其它天然原人参三醇型人参皂苷一样具有多种独特的药理活性。
实施例3、糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应催化原人参三醇糖基化
糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应催化原人参三醇糖基化的反应体系为:3mM原人参三醇,0.5mM尿苷二磷酸,50mM Tris-HCl(pH7.5),10mM MgCl2,10%二甲基亚砜(v/v),160mU/mL糖基转移酶Bs-YjiC,200mU/mL蔗糖合成酶AtSuSy,35℃反应,200rpm条件下,反应1h。反应结束后,按照实施例2中的反应条件以及高效液相色谱检测方法对反应产物进行鉴定。如图5所示,与利用昂贵的尿苷二磷酸葡萄糖为糖基供体的反应体系一样,糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy组成的双酶偶联反应体系可以以廉价的蔗糖为糖基供体,高效催化原人参三醇糖基化生成图1中所示的5种天然与非天然人参皂苷。
鉴于糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应可以在1h内高效催化3mM原人参三醇糖基化,因此进一步采取分批补料的方式,即在1h反应结束后,在时间点1h、3h和6h分别补充3mM原人参三醇,以避免一次性添加高浓度的原人参三醇对酶的抑制作用。如图6所示,通过分批补充原人参三醇,最终糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应体系可催化原人参三醇生成1.5g/L非天然人参皂苷3-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物5),1.7g/L人参皂苷Rh1(产物4),5.8g/L非天然人参皂苷3-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxadiol(产物3),0.25g/L非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物2)和0.38g/L非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxatriol(产物1)(图6),原人参三醇的转化率达到98%,说明糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应可以高效催化原人参三醇糖基化以合成本发明专利中的5种天然与非天然人参皂苷产物。鉴于酿酒酵母工程菌可以高效合成原人参三醇且该双酶偶联反应又具有催化效率高、产物纯化简单、成本低廉等特点,因此糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应将为本发明专利中5种天然与非天然人参皂苷的规模化生产奠定基础。
序列表
<110> 中国科学院天津工业生物技术研究所
<120> 一组天然与非天然的原人参三醇型人参皂苷的合成方法
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Gln Cys Thr Ile Ala His Ala Leu Glu Lys Thr Lys Tyr Pro Asp Ser
435 440 445
Asp Ile Tyr Trp Lys Asp Phe Asp Asn Lys Tyr His Phe Ser Cys Gln
450 455 460
Phe Thr Ala Asp Leu Ile Ala Met Asn Asn Ala Asp Phe Ile Ile Thr
465 470 475 480
Ser Thr Tyr Gln Glu Ile Ala Gly Thr Lys Asn Thr Val Gly Gln Tyr
485 490 495
Glu Ser His Gly Ala Phe Thr Leu Pro Gly Leu Tyr Arg Val Val His
500 505 510
Gly Ile Asp Val Phe Asp Pro Lys Phe Asn Ile Val Ser Pro Gly Ala
515 520 525
Asp Met Thr Ile Tyr Phe Pro Tyr Ser Glu Glu Thr Arg Arg Leu Thr
530 535 540
Ala Leu His Gly Ser Ile Glu Glu Met Leu Tyr Ser Pro Asp Gln Thr
545 550 555 560
Asp Glu His Val Gly Thr Leu Ser Asp Arg Ser Lys Pro Ile Leu Phe
565 570 575
Ser Met Ala Arg Leu Asp Lys Val Lys Asn Ile Ser Gly Leu Val Glu
580 585 590
Met Tyr Ser Lys Asn Thr Lys Leu Arg Glu Leu Val Asn Leu Val Val
595 600 605
Ile Ala Gly Asn Ile Asp Val Asn Lys Ser Lys Asp Arg Glu Glu Ile
610 615 620
Val Glu Ile Glu Lys Met His Asn Leu Met Lys Asn Tyr Lys Leu Asp
625 630 635 640
Gly Gln Phe Arg Trp Ile Thr Ala Gln Thr Asn Arg Ala Arg Asn Gly
645 650 655
Glu Leu Tyr Arg Tyr Ile Ala Asp Thr Arg Gly Ala Phe Ala Gln Pro
660 665 670
Ala Phe Tyr Glu Ala Phe Gly Leu Thr Val Val Glu Ala Met Thr Cys
675 680 685
Gly Leu Pro Thr Phe Ala Thr Cys His Gly Gly Pro Ala Glu Ile Ile
690 695 700
Glu His Gly Leu Ser Gly Phe His Ile Asp Pro Tyr His Pro Glu Gln
705 710 715 720
Ala Gly Asn Ile Met Ala Asp Phe Phe Glu Arg Cys Lys Glu Asp Pro
725 730 735
Asn His Trp Lys Lys Val Ser Asp Ala Gly Leu Gln Arg Ile Tyr Glu
740 745 750
Arg Tyr Thr Trp Lys Ile Tyr Ser Glu Arg Leu Met Thr Leu Ala Gly
755 760 765
Val Tyr Gly Phe Trp Lys Tyr Val Ser Lys Leu Glu Arg Arg Glu Thr
770 775 780
Arg Arg Tyr Leu Glu Met Phe Tyr Ile Leu Lys Phe Arg Asp Leu Val
785 790 795 800
Lys Thr Val Pro Ser Thr Ala Asp Asp
805
<210> 5
<211> 805
<212> PRT
<213> 大豆(Glycine max)
<400> 5
Met Ala Thr Asp Arg Leu Thr Arg Val His Ser Leu Arg Glu Arg Leu
1 5 10 15
Asp Glu Thr Leu Thr Ala Asn Arg Asn Glu Ile Leu Ala Leu Leu Ser
20 25 30
Arg Ile Glu Ala Lys Gly Lys Gly Ile Leu Gln His His Gln Val Ile
35 40 45
Ala Glu Phe Glu Glu Ile Pro Glu Glu Asn Arg Gln Lys Leu Thr Asp
50 55 60
Gly Ala Phe Gly Glu Val Leu Arg Ser Thr Gln Glu Ala Ile Val Leu
65 70 75 80
Pro Pro Trp Val Ala Leu Ala Val Arg Pro Arg Pro Gly Val Trp Glu
85 90 95
Tyr Leu Arg Val Asn Val His Ala Leu Val Val Glu Glu Leu Gln Pro
100 105 110
Ala Glu Tyr Leu His Phe Lys Glu Glu Leu Val Asp Gly Ser Ser Asn
115 120 125
Gly Asn Phe Val Leu Glu Leu Asp Phe Glu Pro Phe Asn Ala Ala Phe
130 135 140
Pro Arg Pro Thr Leu Asn Lys Ser Ile Gly Asn Gly Val Gln Phe Leu
145 150 155 160
Asn Arg His Leu Ser Ala Lys Leu Phe His Asp Lys Glu Ser Leu His
165 170 175
Pro Leu Leu Glu Phe Leu Arg Leu His Ser Val Lys Gly Lys Thr Leu
180 185 190
Met Leu Asn Asp Arg Ile Gln Asn Pro Asp Ala Leu Gln His Val Leu
195 200 205
Arg Lys Ala Glu Glu Tyr Leu Gly Thr Val Pro Pro Glu Thr Pro Tyr
210 215 220
Ser Glu Phe Glu His Lys Phe Gln Glu Ile Gly Leu Glu Arg Gly Trp
225 230 235 240
Gly Asp Asn Ala Glu Arg Val Leu Glu Ser Ile Gln Leu Leu Leu Asp
245 250 255
Leu Leu Glu Ala Pro Asp Pro Cys Thr Leu Glu Thr Phe Leu Gly Arg
260 265 270
Ile Pro Met Val Phe Asn Val Val Ile Leu Ser Pro His Gly Tyr Phe
275 280 285
Ala Gln Asp Asn Val Leu Gly Tyr Pro Asp Thr Gly Gly Gln Val Val
290 295 300
Tyr Ile Leu Asp Gln Val Arg Ala Leu Glu Asn Glu Met Leu His Arg
305 310 315 320
Ile Lys Gln Gln Gly Leu Asp Ile Val Pro Arg Ile Leu Ile Ile Thr
325 330 335
Arg Leu Leu Pro Asp Ala Val Gly Thr Thr Cys Gly Gln Arg Leu Glu
340 345 350
Lys Val Phe Gly Thr Glu His Ser His Ile Leu Arg Val Pro Phe Arg
355 360 365
Thr Glu Lys Gly Ile Val Arg Lys Trp Ile Ser Arg Phe Glu Val Trp
370 375 380
Pro Tyr Leu Glu Thr Tyr Thr Glu Asp Val Ala His Glu Leu Ala Lys
385 390 395 400
Glu Leu Gln Gly Lys Pro Asp Leu Ile Val Gly Asn Tyr Ser Asp Gly
405 410 415
Asn Ile Val Ala Ser Leu Leu Ala His Lys Leu Gly Val Thr Gln Cys
420 425 430
Thr Ile Ala His Ala Leu Glu Lys Thr Lys Tyr Pro Glu Ser Asp Ile
435 440 445
Tyr Trp Lys Lys Leu Glu Glu Arg Tyr His Phe Ser Cys Gln Phe Thr
450 455 460
Ala Asp Leu Phe Ala Met Asn His Thr Asp Phe Ile Ile Thr Ser Thr
465 470 475 480
Phe Gln Glu Ile Ala Gly Ser Lys Asp Thr Val Gly Gln Tyr Glu Ser
485 490 495
His Thr Ala Phe Thr Leu Pro Gly Leu Tyr Arg Val Val His Gly Ile
500 505 510
Asp Val Phe Asp Pro Lys Phe Asn Ile Val Ser Pro Gly Ala Asp Gln
515 520 525
Thr Ile Tyr Phe Pro His Thr Glu Thr Ser Arg Arg Leu Thr Ser Phe
530 535 540
His Pro Glu Ile Glu Glu Leu Leu Tyr Ser Ser Val Glu Asn Glu Glu
545 550 555 560
His Ile Cys Val Leu Lys Asp Arg Ser Lys Pro Ile Ile Phe Thr Met
565 570 575
Ala Arg Leu Asp Arg Val Lys Asn Ile Thr Gly Leu Val Glu Trp Tyr
580 585 590
Gly Lys Asn Ala Lys Leu Arg Glu Leu Val Asn Leu Val Val Val Ala
595 600 605
Gly Asp Arg Arg Lys Glu Ser Lys Asp Leu Glu Glu Lys Ala Glu Met
610 615 620
Lys Lys Met Tyr Gly Leu Ile Glu Thr Tyr Lys Leu Asn Gly Gln Phe
625 630 635 640
Arg Trp Ile Ser Ser Gln Met Asn Arg Val Arg Asn Gly Glu Leu Tyr
645 650 655
Arg Val Ile Cys Asp Thr Arg Gly Ala Phe Val Gln Pro Ala Val Tyr
660 665 670
Glu Ala Phe Gly Leu Thr Val Val Glu Ala Met Thr Cys Gly Leu Pro
675 680 685
Thr Phe Ala Thr Cys Asn Gly Gly Pro Ala Glu Ile Ile Val His Gly
690 695 700
Lys Ser Gly Phe His Ile Asp Pro Tyr His Gly Asp Arg Ala Ala Asp
705 710 715 720
Leu Leu Val Asp Phe Phe Glu Lys Cys Lys Leu Asp Pro Thr His Trp
725 730 735
Asp Lys Ile Ser Lys Ala Gly Leu Gln Arg Ile Glu Glu Lys Tyr Thr
740 745 750
Trp Gln Ile Tyr Ser Gln Arg Leu Leu Thr Leu Thr Gly Val Tyr Gly
755 760 765
Phe Trp Lys His Val Ser Asn Leu Asp Arg Arg Glu Ser Arg Arg Tyr
770 775 780
Leu Glu Met Phe Tyr Ala Leu Lys Tyr Arg Lys Leu Ala Glu Ser Val
785 790 795 800
Pro Leu Ala Ala Glu
805
<210> 6
<211> 793
<212> PRT
<213> 嗜酸性喜温硫杆菌(Acidithiobacillus caldus)
<400> 6
Met Ile Glu Ala Leu Arg Gln Gln Leu Leu Asp Asp Pro Arg Ser Trp
1 5 10 15
Tyr Ala Phe Leu Arg His Leu Val Ala Ser Gln Arg Asp Ser Trp Leu
20 25 30
Tyr Thr Asp Leu Gln Arg Ala Cys Ala Asp Phe Arg Glu Gln Leu Pro
35 40 45
Glu Gly Tyr Ala Glu Gly Ile Gly Pro Leu Glu Asp Phe Val Ala His
50 55 60
Thr Gln Glu Val Ile Phe Arg Asp Pro Trp Met Val Phe Ala Trp Arg
65 70 75 80
Pro Arg Pro Gly Arg Trp Ile Tyr Val Arg Ile His Arg Glu Gln Leu
85 90 95
Ala Leu Glu Glu Leu Ser Thr Asp Ala Tyr Leu Gln Ala Lys Glu Gly
100 105 110
Ile Val Gly Leu Gly Ala Glu Gly Glu Ala Val Leu Thr Val Asp Phe
115 120 125
Arg Asp Phe Arg Pro Val Ser Arg Arg Leu Arg Asp Glu Ser Thr Ile
130 135 140
Gly Asp Gly Leu Thr His Leu Asn Arg Arg Leu Ala Gly Arg Ile Phe
145 150 155 160
Ser Asp Leu Ala Ala Gly Arg Ser Gln Ile Leu Glu Phe Leu Ser Leu
165 170 175
His Arg Leu Asp Gly Gln Asn Leu Met Leu Ser Asn Gly Asn Thr Asp
180 185 190
Phe Asp Ser Leu Arg Gln Thr Val Gln Tyr Leu Gly Thr Leu Pro Arg
195 200 205
Glu Thr Pro Trp Ala Glu Ile Arg Glu Asp Met Arg Arg Arg Gly Phe
210 215 220
Ala Pro Gly Trp Gly Asn Thr Ala Gly Arg Val Arg Glu Thr Met Arg
225 230 235 240
Leu Leu Met Asp Leu Leu Asp Ser Pro Ser Pro Ala Ala Leu Glu Ser
245 250 255
Phe Leu Asp Arg Ile Pro Met Ile Ser Arg Ile Leu Ile Val Ser Ile
260 265 270
His Gly Trp Phe Ala Gln Asp Lys Val Leu Gly Arg Pro Asp Thr Gly
275 280 285
Gly Gln Val Val Tyr Ile Leu Asp Gln Ala Arg Ala Leu Glu Arg Glu
290 295 300
Met Arg Asn Arg Leu Arg Gln Gln Gly Val Asp Val Glu Pro Arg Ile
305 310 315 320
Leu Ile Ala Thr Arg Leu Ile Pro Glu Ser Asp Gly Thr Thr Cys Asp
325 330 335
Gln Arg Leu Glu Pro Val Val Gly Ala Glu Asn Val Gln Ile Leu Arg
340 345 350
Val Pro Phe Arg Tyr Pro Asp Gly Arg Ile His Pro His Trp Ile Ser
355 360 365
Arg Phe Lys Ile Trp Pro Trp Leu Glu Arg Tyr Ala Gln Asp Leu Glu
370 375 380
Arg Glu Val Leu Ala Glu Leu Gly Ser Arg Pro Asp Leu Ile Ile Gly
385 390 395 400
Asn Tyr Ser Asp Gly Asn Leu Val Ala Thr Leu Leu Ser Glu Arg Leu
405 410 415
Gly Val Thr Gln Cys Asn Ile Ala His Ala Leu Glu Lys Ser Lys Tyr
420 425 430
Leu Tyr Ser Asp Leu His Trp Arg Asp His Glu Gln Asp His His Phe
435 440 445
Ala Cys Gln Phe Thr Ala Asp Leu Ile Ala Met Asn Ala Ala Asp Ile
450 455 460
Ile Val Thr Ser Thr Tyr Gln Glu Ile Ala Gly Asn Asp Arg Glu Ile
465 470 475 480
Gly Gln Tyr Glu Gly His Gln Asp Tyr Thr Leu Pro Gly Leu Tyr Arg
485 490 495
Val Glu Asn Gly Ile Asp Val Phe Asp Ser Lys Phe Asn Ile Val Ser
500 505 510
Pro Gly Ala Asp Pro Arg Phe Tyr Phe Ser Tyr Ala Arg Thr Glu Glu
515 520 525
Arg Pro Ser Phe Leu Glu Pro Glu Ile Glu Ser Leu Leu Phe Gly Arg
530 535 540
Glu Pro Gly Ala Asp Arg Arg Gly Val Leu Glu Asp Arg Gln Lys Pro
545 550 555 560
Leu Leu Leu Ser Met Ala Arg Met Asp Arg Ile Lys Asn Leu Ser Gly
565 570 575
Leu Ala Glu Leu Tyr Gly Arg Ser Ser Arg Leu Arg Gly Leu Ala Asn
580 585 590
Leu Val Ile Ile Gly Gly His Val Asp Val Gly Asn Ser Arg Asp Ala
595 600 605
Glu Glu Arg Glu Glu Ile Arg Arg Met His Glu Ile Met Asp His Tyr
610 615 620
Gln Leu Asp Gly Gln Leu Arg Trp Val Gly Ala Leu Leu Asp Lys Thr
625 630 635 640
Val Ala Gly Glu Leu Tyr Arg Val Val Ala Asp Gly Arg Gly Val Phe
645 650 655
Val Gln Pro Ala Leu Phe Glu Ala Phe Gly Leu Thr Val Ile Glu Ala
660 665 670
Met Ser Ser Gly Leu Pro Val Phe Ala Thr Arg Phe Gly Gly Pro Leu
675 680 685
Glu Ile Ile Glu Asp Gly Val Ser Gly Phe His Ile Asp Pro Asn Asp
690 695 700
His Glu Ala Thr Ala Glu Arg Leu Ala Asp Phe Leu Glu Ala Ala Arg
705 710 715 720
Glu Arg Pro Lys Tyr Trp Leu Glu Ile Ser Asp Ala Ala Leu Ala Arg
725 730 735
Val Ala Glu Arg Tyr Thr Trp Glu Arg Tyr Ala Glu Arg Leu Met Thr
740 745 750
Ile Ala Arg Ile Phe Gly Phe Trp Arg Phe Val Leu Asp Arg Glu Ser
755 760 765
Gln Val Met Glu Arg Tyr Leu Gln Met Phe Arg His Leu Gln Trp Arg
770 775 780
Pro Leu Ala His Ala Val Pro Met Glu
785 790
Claims (1)
1.一种制备人参皂苷的方法,其特征在于,包括下述步骤:将3mM原人参三醇,0 .5mM尿苷二磷酸,50mM pH7 .5 Tris-HCl,10mM MgCl2,10%二甲基亚砜,160mU/mL糖基转移酶Bs-YjiC,200mU/mL蔗糖合成酶AtSuSy,35℃反应,200rpm条件下反应,反应1h,在1h反应结束后,在时间点1h、3h和6h分别补充3mM原人参三醇;
糖基转移酶Bs-YjiC的氨基酸序列为SEQ ID NO:1;
蔗糖合成酶AtSuSy的氨基酸序列为SEQ ID NO:2;
最终糖基转移酶Bs-YjiC与蔗糖合成酶AtSuSy偶联反应体系催化原人参三醇生成1.5g/L产物5非天然人参皂苷3-O-β-D-glucopyranosyl-20(S)-protopanaxatriol,1.7g/L产物4人参皂苷Rh1,5.8g/L产物3非天然人参皂苷3-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxadiol,0.25g/L产物2非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-20(S)-protopanaxatriol和0.38g/L产物1非天然人参皂苷3-O-β-D-glucopyranosyl-6-O-β-D-glucopyranosyl-12-O-β-D-glucopyranosyl-20(S)-protopanaxatriol;
其中,产物4具有以下结构式:
产物1具有以下结构式:
产物2具有以下结构式:
产物3具有以下结构式:
产物5具有以下结构式:
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105087739A (zh) * | 2014-05-12 | 2015-11-25 | 中国科学院上海生命科学研究院 | 一种新的制备稀有人参皂苷的催化体系及其应用 |
CN106350565A (zh) * | 2016-09-12 | 2017-01-25 | 中国科学院天津工业生物技术研究所 | 一种稀有人参皂苷Rh2的生产方法 |
-
2017
- 2017-11-17 CN CN201711155328.0A patent/CN109796516B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105087739A (zh) * | 2014-05-12 | 2015-11-25 | 中国科学院上海生命科学研究院 | 一种新的制备稀有人参皂苷的催化体系及其应用 |
CN106350565A (zh) * | 2016-09-12 | 2017-01-25 | 中国科学院天津工业生物技术研究所 | 一种稀有人参皂苷Rh2的生产方法 |
Non-Patent Citations (5)
Title |
---|
Characterization of Panax ginseng UDP-Glycosyltransferases Catalyzing Protopanaxatriol and Biosyntheses of Bioactive Ginsenosides F1 and Rh1 in Metabolically Engineered Yeasts;Wei Wei 等;《Molecular Plant》;20150907;第8卷(第9期);第1415页Figure 2 * |
Cloning and hete rologous expression of UDP-glycosyltransferase genes from Bacillus subtilis and its application in the glycosylation of ginsenoside Rh1;S.L. Luo 等;《Letters in Applied Microbiology》;20141019;第60卷(第1期);第73页Figure 1 * |
Exploiting the aglycon promiscuity of glycosyltransferase Bs-YjiC from Bacillus subtilis and its application in synthesis of glycosides;Longhai Dai 等;《Journal of Biotechnology》;20170316;第248卷;第73页Fig.2,左栏第2段-右栏第1段、摘要,第2.3节,第3.5节和Fig. 4 * |
Three new triterpenoids from Panax ginsengexhibit cytotoxicity against human A549 and Hep-3B cell lines;Hai-Ying Ma 等;《Journal of Natural Medicines》;20120412;第66卷(第3期);第577页Fig. 1 * |
Wei Wei 等.Characterization of Panax ginseng UDP-Glycosyltransferases Catalyzing Protopanaxatriol and Biosyntheses of Bioactive Ginsenosides F1 and Rh1 in Metabolically Engineered Yeasts.《Molecular Plant》.2015,第8卷(第9期),第1412-1424页. * |
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