生物化学 维生素(辅酶)、激素
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维生素与辅酶一、教学大纲基本要求4种脂溶性维生维生素即:维生素A与胡萝卜素,维生素D,维生素E和维生素K;10种水溶性维生素及其辅酶即:维生素B1,维生素B2,维生素B3,维生素B5,维生素B6,维生素B7,维生素B11,维生素B12,硫辛酸和维生素C。
二、本章知识要点(一)维生素(Vitamin)的概念1.维生素(Vitamin)的概念:维生素是维持机体正常代谢和健康所必需的,但体内不能合成或合成量不足,必须靠食物供给的一类小分子有机化合物。
2.维生素的分类:根据维生素溶解的性质可分为脂溶性维生素和水溶性维生素两大类。
(1)脂溶性维生素(Lipid-Soluble Vitamin)包括维生素A、D、E、K。
(2)水溶性维生素(Water-Soluble Vitamin)包括B族维生素和维生素C,B族维生素又包括维生素B1、B2、PP、B6、泛酸、生物素、叶酸、B12等。
3.维生素缺乏原因: (1)摄入量不足。
(2)吸收障碍。
(3)需要量增加。
(4)长期服用某些药物。
(二)脂溶性维生素脂溶性维生素的特点:都是亲脂性的非极性分子或者衍生物,可伴随脂类吸收(可大量在体内储存)若吸收障碍就易产生缺乏病。
此类维生素各自发挥不同的生理功用。
l. 维生素A(1)化学本质与性质:维生素A是β—白芷酮环的不饱和一元醇。
化学性质活泼,对氧、酸及紫外线敏感。
在避氧情况下可耐高温。
(2)维生素A原及转变:自然界一些红黄色植物(如胡萝卜素、红辣椒、黄玉米、茄等)含有类胡萝卜素。
(3)生化作用及缺乏症:①11—顺视黄醛构成视角细胞内感受弱光或暗光的物质——视紫红质。
②参与糖蛋白的合成,维持上皮细胞的完整与健全。
③β胡萝卜素是抗氧化剂,在氧分压低时直接消灭自由基。
④维生素A具有类固醇样作用,促进生长发育。
⑤维生素A缺乏时可导致夜盲症,干眼病.角膜软化症等。
2.维生素D(1)化学本质与性质:维生素D属于类固醇的衍生物,主要有VD2(麦角钙化醇,)和VD3(胆钙化醇,)两种。
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绪论(prelude)生物化学biochemistry 无机离子inorganic生物分子biomolecular 糖carbohydrate脂lipid核酸nucleic acid蛋白质protein维生素vitamin酶enzyme辅酶coenzyme 激素hormone核苷酸nucleotide氨基酸amino acid葡萄糖glucose单糖monosaccharide 双糖disaccharide脂肪酸fatty acid克隆技术cloning克隆clone糖类(carbohydrate)糖carbohydrate/saccharide糖生物学glycobiology醛糖aldose酮糖ketose单糖monosaccharide寡/低聚糖oligosaccharide二糖disaccharide三糖trisaccharide多糖polysaccharide复合糖compoud/complex saccharide 链状结构chain structure 构型configuration构象conformation异构isomerism对映体enanthiomer果糖fructose半乳糖galactose甘露糖mannose环状结构ring structure 异头物anomer不对称碳原子asymmetric carbon atom 投影式Fischer式透视式Haworth式椅式构象chain form船式构象boat form旋光性optical activity比旋光度specific rotation变旋性mutarotation甜度sweetness半缩醛hemiacetal醛糖酸aldonic acid还原糖reducing sugar醛糖二酸aldaric acid糖醛酸uronic acid糖苷glycoside糖脎osazone/phenylosazone糠醛furfural蒽酮anthroneN—乙酰葡糖胺 NAGN-乙酰—胞壁酸 NAM蔗糖sucrose麦芽糖maltose乳糖lactose淀粉starch 糖原glycogen纤维素cellulose壳多糖(几丁质)chitin琼脂agar支链淀粉amylopectin直链淀粉amylose肽聚糖peptidoglycan粘肽mucopeptide氨基糖肽glycoaminopeptide磷壁酸teichoic acid软骨素4-或6—硫chondroitin 4—or 6-sulfate,CS脂多糖lipopolysaccharide糖蛋白glycoprotein透明质酸hyaluronic acid,HA肝素heparin,HP蛋白聚糖proteoglycan硫酸皮肤素dermatan sulfate,DS硫酸角质素keratan suIfate,KS核心蛋白core protein连接蛋白link protein糖胺聚糖/粘多糖glycosaminoglycan/mucopolysacchari de胞壁酸muramic acid神经氨酸neuraminic acid 淀粉酶amylase糊精odextrin磷酸化酶phosphrylase糖肽键glycopeptide linkag 脂质(lipid)单脂simple lipid复脂compound lipid衍生脂质derived lipid脂肪酸fatty acid,FA饱和脂肪酸saturated FA不饱和脂肪unsaturated FA单不饱和脂肪酸monounsaturated FA多不饱和脂肪酸polyunsaturated FA乳化emulsification微团micelle离子型去污剂(乳化剂)ionic detergent 三脂triester甘油glycerolSn命名法Stereospecific Numbering 酰基甘油acylglycerol三酰甘油triacylglycerol,TG甘油三脂triglyceride命名法nomenclature乙酰(化)值/价acetylation value 酸值/酸价acid value加成反应addition reaction碘值/碘价iodine number or value 皂化值saponification value磷脂phospholipid甘油磷酯glycerophospholipid微囊vesicle磷脂酶phospholipase磷酸甘油脂phosphoglyceride鞘氨醇sphingosine鞘(氨醇)磷脂sphingomyelin神经酰胺ceramide鞘磷脂sphingomyelin糖脂glucolipid/glycolipin鞘糖脂glycosphingolipid必需脂肪酸essential fatty acid 蜡wax过氧化作用peroxidation磷脂酰胆碱/卵磷脂lecithin磷脂酰乙醇胺/脑磷脂cephalin双磷脂酰甘油/心磷脂cardiolipin 萜terpene 类固醇/甾醇steroid 胆固醇cholesterol蛋白质(protein)化学蛋白质protein,pr蛋白水解酶proteolytic enzyme 蛋白酶proteinase胰蛋白酶trypsin糜蛋白酶chymotrypsin胃蛋白酶pepsin嗜热菌蛋白酶themolysin氨基酸amino acid,AA等电点isoelectric point,pI 标准氨基酸standard amino acid 甘氨酸glycine,Gly,G丙氨酸alanine,Ala,A缬氨酸 valine,Val,V亮氨酸lucine,Leu,L异亮氨酸 isoleucine,Ile,I 丝氨酸serine,Ser,S苏氨酸threonine,Thr,T半胱氨酸cysteine,Cys,C甲硫/蛋氨酸methionine,Met,M 谷氨酸glutamic acid,Glu,E谷氨酰胺glutamine,Gln,Q天冬氨酸aspartic acid,Asp,D 天冬酰胺asparagine,Asn,N赖氨酸lysine,Lys,K精氨酸arginine,Arg,R组氨酸histidine,His,H脯氨酸proline,Pro,P苯丙氨酸phenylalanine,Phe,F 色氨酸tryptophan,Trp,W酪氨酸tyrosine,Tyr,Y2,4一二硝基氟苯DNFB苯异硫氰酸酯PITC苯硫乙内酰脲AA PTH—AA苯氨基硫甲酰AA PTC—AA坂口反应Sakaguchi反应乙醛酸反应Hopking-Cole反应肽键peptide bond二硫硝基苯甲酸DTNB (Ellman试剂)谷胱甘肽(GSH ,Glu—Cys—Gly)肽(链)peptide chain酚试剂反应Folin-Cioculteu反应氨肽酶amino peptidase羧肽酶carboxypeptidase真正单键pure single bond二面角dihedral angle帽化capping部分双键的性质partial double-bond character一级结构 primary structure 二级结构 secondary structure三级结构tertiary structure四级结构quaternary structure二级结构元件secondary structrue element螺旋helixα-螺旋α—Helix氢键hydrogen bond疏水作用hydrophobic interaction范德华力van der Waals forceβ—折叠β-pleated sheet亚基/亚单位subunit自由回转/无规卷曲random coil结构域structural domain次级键(非共价键)noncovalent bond肌红蛋白myoglobin,Mb对称性symmetry超二级结构(花式)Super—secondary structure肽链peptide chain多肽polypeptide活性肽active peptideα—角蛋白α-keratin丝心蛋白fibroin胶原蛋白collagen血红蛋白hemoglobin,Hb别构作用allosteric interaction别构效应allosteric effect别构蛋白allosteric protein协同效应cooperative effect二磷酸甘油酸BPG核糖核酸酶ribonuclease, RNaseβ—转角β-turn(β-弯曲β-bend,β-回折或发夹结构hairpin structure)纸层析filter—paper chromatography 离子交换层析ion-exchange column chromatography简单/纯蛋白质simple protein缀合蛋白质conjugated protein 纤维状蛋白质fibrous protein球状蛋白质globular protein二硫键disulfide bond对角线电泳diagonal electrophoresis 氨基酸残基amino acid residues同源蛋白质homology protein二面角dihedral angle螺旋帽化helix capping肌球蛋白myosin膜周边蛋白peripheral protein膜内在蛋白antegral protein脂锚定蛋白Lipid—anchored protein 变性denaturation变性剂denaturation agent十二烷基硫酸钠SDS复性renaturation珠蛋白globin血红素heme紧张态tense state弛态relaxed state镰刀状细胞贫血病sickle—cell anemia 免疫球蛋白IgG渗透压osmotic pressure沉降系数sedimentation coefficient 沉降系数单位Svedberg unit,S凝胶过滤gel filtration聚丙烯酰胺凝胶ployacrylamide gel水化层hydration mantle亲水胶体hydrophilic colloid双电层electric double layer纯化purification 分离isolation透析dialysis密度梯度density gradient盐溶salting in盐析salting out电泳electrophoresis聚丙烯酰胺凝胶电泳ployacrylamide gel electrophoresis毛细管电泳capillary electrophoresis 等电聚焦isoelectric focusing亲和层析affinity chromatography酶(enzyme)化学生物催化剂biocatalyst 底物substrate单纯酶simple enzyme结合酶conjugated enzyme 全酶holienzyme辅因子cofactor 辅酶coenzyme辅基prosthetic group金属离子metal ion多酶复合体multienzyme system 寡聚酶oligomeric enzyme单体酶monomeric enzyme习惯命名法recommended name国际系统命名法systematic name酶的专一性/特异性enzyme specificity 诱导契合学说induced—fit hypothesis 氧化还原酶oxidoreductases转移酶transferases水解酶hydrolases裂合酶lyase异构酶isomerases合成/连接酶ligases酶促反应enzymatic reaction酶活力enzyme activity比活力specific activity核酶ribozyme抗体酶abzyme酶工程enzyme engineering固体化酶immobilized enzyme酶促反应动力学kinetics of enzyme-catalyzed reactions 双倒数作图法Lineweaver-Burk作图法最适温度optimum temperature,Tm最适pHoptimum pH活性部位active site必需基团essential group抑制剂inhibitor激活剂activator效应物effector别构酶allosteric enzyme别构调节allosteric regulation同促效应homotropic effect异促效应heterotropic effect天冬氨酸转氨甲酰酶ATCase酶原zymogen酶单位enzyme unit同工酶isoenzyme共价调节(修饰)酶covalent regulatory enzyme乳酸脱氢酶LDH可逆的共价修饰reversible covalent modification维生素(vitamin)与辅酶(coenzyme)视紫红质visual purple视黄醇retinolβ-胡萝卜素β-carotine夜盲症nyctalopia视黄醛retinene胆钙化醇(Vitamin D3)cholecalciferol V E(生育酚/抗不育维生素)tocopherol麦角钙化醇(Vitamin D2)ergotcalciferol凝血维生素Vitamin K抗神经炎/脚气病维生素,硫胺(素)Vitamin B1抗癞皮病维生素Vitamin PP硫胺素焦磷酸thiamine pyrophosphate,TPP尼克酸(烟酸)nicotinic acid尼克酰胺(烟酰胺) nicotinamide 转钙化蛋白DBP维生素B2( VB2)/核黄素riboflavin黄素单核苷酸FMN ,flavin mononucleotide黄素腺嘌呤二核苷酸FAD,flavin adenine dinucleotid泛酸,VB3(遍多酸)pantothenic acid辅酶A CoA—SH,coenzyme A酰基载体蛋白ACP, acyl carrier protein维生素B6 (吡哆素)Vitamin B6吡哆醇pyridoxine吡哆醛pyridoxal吡哆胺pyridoxamine磷酸吡哆醛PLP, pyridoxal—5-phosphate醛亚胺 Schiff碱维生素B12 (钴胺素) cobalamine维生素B7/H(生物素)biotin叶酸folic acid四氢叶酸(辅酶F)FH4/CoF/THF,tetrahydrofolate硫辛酸lipoic acid 维生素C (抗坏血酸) ascorbic acid尼克酰胺腺嘌呤二核苷酸(辅酶Ⅰ)nicotinamide adenine dinucleotide,NAD+尼克酰胺腺嘌呤二核苷酸磷酸 (辅酶Ⅱ)nicotinamide adeninedinucleotide phosphate,NADP+核酸(nucleic acid)化学DNA序列分析 DNA Sequencing脱氧核糖核酸Deoxyribonucleic acid, DNA核糖核酸Ribonucleic acid, RNA信使RNA (mRNA) messenger RNA转运RNA( tRNA) transfer RNA核糖体RNA (rRNA) ribosome RNA小RNA sRNA反义RNA asRNA胞质小RNA sc RNA核不均一RNA hnRNA核内小RNA snRNA 原核生物prokaryote真核生物eukaryote人类基因组计划 Human Gene Project质粒plasmid染色体chromosome染色质chromatin一磷酸腺苷(腺一磷)AMP,adenosine monophosphate二磷酸腺苷(腺二磷)ADP, adenosine diphosphate三磷酸腺苷(腺三磷)ATP,adenosine triphosphate复制replication转录transcription翻译translation逆转录reserve transcription 核苷酸nucleotide核苷nucleoside磷酸phosphate碱基base嘌呤碱purine base嘧啶碱pyrimidine base戊糖amyl sugar核糖ribose脱氧核糖deoxyribose腺嘌呤adenine,A鸟嘌呤guanine,G胞嘧cytosine,C胸腺嘧啶thymine,T尿嘧啶uracil,U二氢尿嘧啶DHU 3’,5'—环化鸟苷酸 cGMP3',5’—环化腺苷酸cAMP顺反子cistron假尿嘧啶核苷pseudouridineDNA双螺旋结构 DNA double—helical structure碱基对base pair, bp氢键hydrogen bond碱基堆积base stacking组蛋白histone核小体nucleosome纤维fiber突环loop玫瑰花结rosette染色单体chromatid螺管/螺线圈coil氨基酸臂amino acid armD环(二氢尿嘧啶环) diphydrouracil loop反密码子环anticodon loop可变环(额外环) extra loop核糖核酸酶ribonuclease, RNase 牛胰核糖核酸酶RNaseI脱氧核糖核酸酶deoxyribonuclease,DNase牛胰脱氧核糖核酸酶DNaseI牛脾脱氧核糖核酸酶DNaseⅡ熔解温度melting temperature, Tm 变性denaturation 复性reassociation杂交hybridization原位杂交hybridization in situ激素(hormone)激素hormone生长激素growth hormone促甲状腺激素thyrotropic hormone催乳激素luteotropic促黄体生长激素luteinizing hormone促卵泡激素follicle stimulating bormone脂肪酸释放激素lipotropin催产素oxytocin加压素vasopressin促黑素细胞激素malanophore-stimulating hormone 胸腺素thymosin甲状腺激素thyroxine三碘甲状腺原氨酸triiodothyronine 降钙素calcitonin甲状旁腺激素parathormone肾上腺素adrenaline去甲肾上腺素noradrenaline胰高血糖素glucagon胰岛素insulin促肠液激素enterocrinin肠促胰液素secretin肠抑胃素enterogastrone促肾上腺皮质激素adrenocorticotropic hormone促甲酸激素gastrin绒毛膜粗性腺激素chorionic gonadoreopin耻骨松弛激素relaxin瘦素leptin皮质酮corticosterone肾上腺雄酮androstenedione孕酮progesterone原激素prohormone甲状腺过氧化物酶thyroid peroxidase 抗利尿激素antidiuretic hormone 睾酮testosterone雄酮androsterone钙调蛋白calmodulin钙传感器calcium sensors磷脂酰肌醇phophatidyl inositol 靶蛋白质target protein癌基因oncogenes植物生长素auxin赤霉素gibberellin细胞分裂素cytokinin保幼激素juvenile hormone激动素kinetin脱落酸abscisic acid性外激素sexpheromone蜕皮激素molting hormone生物膜(biomembrane)的组成与结构间体mesosome区域化compartmentation 鞘氨醇sphingosine 鞘磷脂sphingomyelin神经酰胺ceramide磷脂酸phosphatidic acid, PA多态性polymorphism 双层bilayer溶血磷脂lysophospholipid 两亲性分子amphipathic molecule 核磁共振 NMR 脂质体liposome半乳糖脑苷脂 galactocerebroside 去垢剂detergent 微团micelle非双层脂non —bilayer lipid非双层脂结构non —bilayer lipid structure 磷脂酰乙醇胺phosphatidylethanolamine , PE 磷脂酰胆碱phosphatidylcholine , PC 磷脂酰甘油phosphatidylglycerol, PG磷脂酰丝氨酸phosphatidylserine , PS膜骨架membrane skeleton 血影蛋白spectrin糖蛋白glycoprotein 豆蔻酸myristic acid乙酰胆碱酯酶acetylcholinesterase 蛋白质复合物glycocalyx 细胞外壳cell coat 单葡萄糖甘油二脂monoglucsyldiglyceride ,MGDG 运动性mobility 胞吞/内吞endocytosis 胞吐exocytosis 偏转gauche 全反式all trans 分相phase separation 荧光素fluorescein 肌动蛋白actin单位膜unit membrance微区domain 糖基磷脂酰肌醇glycosylphosphatidylinositol,GPI心磷脂(双磷脂酰甘油) cardiolipin(diphosphatidylglycerol) 光致漂白荧光恢复法 Fluorescence Photobleaching Recovery , FPR生物氧化(Biological Oxidation )肌酸激酶Creatine kinase磷酸肌酸Creatine phosphofat e 生物氧化Biological Oxidation氧化磷酸化oxidative phosphorylation 呼吸链respiratory chainNADH-Q 还原酶 NADH-Q reductase 琥珀酸-Q 还原酶succinate —Q reductase细胞还原酶 cytochrome reductase 细胞色素氧化酶 cytochrome oxidase 鱼藤酮rotenone ATP 合酶ATPsynthase 电动势electromotive force 安密妥amytal 解偶联剂uncouplers超氧化物歧化酶superoxide dismutase过氧化氢酶catalase过氧化物酶peroxidase 高能键high-energy bond乙酰磷酸acetyl phosphate 1,3-2磷酸甘油1,3—bisphosphoglycerate氨甲酰磷酸 carbamyl phosphate 酰基腺苷酸acyl adenylate 氨酰腺苷酸 aminoacyl adenylate 焦磷酸Pyrophosphate二磷酸腺苷adenosine diphosphate 磷酸烯醇式丙酮phosphoenolpyruvate 酰基辅酶A acyl coenzyme A果糖—6-磷酸fructose 6—phosphate 辅酶Qcoenzyme-Q腺苷三磷酸 adenosine triphosphate磷酸精氨酸 phosphoarginine甘油-3磷酸glycerol 3-Phosphate腺苷酸激酶adenylate kinase 糖代谢(glycometabolism)糖酵解glycolysis/Embden Meyerhof Parnas葡糖-6-磷酸glucosamine—6—phosphate葡糖-6-磷酸内酯6—phosphogluconolactone内酯酶lactonase核酮糖-5-磷酸ribulose-5-diphophate 葡糖—6—磷酸脱氢酶6-phosphogluconate dehydrogenase葡糖酸-6-磷酸6-phosphogluconate脱支酶debranching enzyme糖原合酶glycogen synthase糖原引物primer发酵fermentation己糖激酶hexokinase 醛缩酶aldolase尿苷二磷酸葡萄糖( uridine diphosphate glucose , UDPG )磷酸葡萄糖异构酶glucosephosphate isomerase磷酸果糖激酶phosphofructokinase磷酸丙糖异构酶triosephosphofructokinase磷酸甘油酸激酶phosphoglycerate kinase磷酸甘油酸变位酶phosphoglyceromutase烯醇化酶enolase丙酮酸激酶pyruvate kinase乳酸脱氢酶lactate dehydrogenase丙酮酸脱羧酶pyruvate decaboxylase乙醇脱氢酶alcohol dehydrogenase二羟丙酮磷酸dihydroxyacetone phosphate甘油醛—3—磷酸glyceraldehyde-3-phosphate3-磷酸甘油酸3—phosphoglycerate丙酮酸pyruvate果糖-2,6-二磷酸fructose2,6-bisphosphate五碳糖磷酸途径pentose phosphate pathway果糖激酶fructokinase果糖—1—磷酸醛缩酶fructose—1—phosphate aldolase甘油醛激酶glyceraldehyde kinase甘油激酶glycerol kinase半乳糖galactose半乳糖激酶galactolinase半乳糖出醇galactitol丙酮酸脱氢酶复合体pyruvatedehydrogenase complex 磷酸甘露糖异构酶phosphomannose isomerase硫胺素焦磷酸thiamine pyrophosphate 硫辛酰胺lipoamide黄素腺嘌呤二核苷酸flavin adenine dinucleotide二氢硫辛酰转乙酰基酶dihydrolipoyl transacetylase二氢硫辛酸脱氢酶dihydrolipoyl dehydrogenase柠檬酸合酶citrate synthase乌头酸酶aconitase异柠檬酸脱氢酶isocitrate dehydrogenase琥珀酰-CoA合成酶succinyl—CoA synthetase琥珀酸脱氢酶succinate dehydrogenase 延胡索酸酶fumarase苹果酸脱氢酶malate dehydrogenase草酰乙酸oxaloacetate异柠檬酸裂解酶isocitate lyase丙酮酸羧化酶pyruvate carboxylase戊糖磷酸途径pentose phosphate pathway己糖单磷酸途径hexose monophosphate pathway戊糖磷酸循环pentose phosphate cycle 磷酸戊糖酸phosphopentonic acid磷酸己糖酸phosphohexonic acid景天庚酮糖sedoheptulose核糖ribose脱氧核糖deoxyribose核酮糖ribulose磷酸葡糖酸氧化途径phosphogluconate oxidative pathway核酮糖-5-磷酸ribulose—5-phosphate 核糖-5-磷酸ribose-5—phosphate木酮糖-5-磷酸xylulose-5—phosphate 转醛酶transaldolase 葡糖异生gluconeogenesisUDP-葡糖焦磷酸化酶UDP-glucose pyrophosphorylase乙醛酸途径glyoxylate pathway异柠檬酸裂合酶isocitrate lyase苹果酸合酶malate synthase糖原的降解glycogen breakdown糖原磷酸化酶glycogen phosphorylase 糖原脱支酶glycogen debranching enzyme磷酸葡萄糖变位酶phosphoglucomutase 糖原合酶glycogen synthase糖原分支酶glycogen branching enzyme 丙酮酸脱氢酶组分pyruvate dehydrogenase component磷酸甘油醛脱氢酶glyceraldehyde phosphate dehydrogenaseα-酮戊二酸脱氢酶复合体α-ketoglutarate dehydrogenase complex脂代谢(lipometabolism)硫酯键thioester link脂酰辅酶A合酶acyl-CoA脂肪酸硫激酶1 fatty acid thiokinase 脂酰腺苷酸混合酸酐acyladenylate mixed andydride无机焦磷酸酶inorganic pyrophosphatase肉碱carnitine肉碱-脂酰转移酶Ιcaunitine acyltransferaseΙ肉碱移位酶carnitine translocase N—苯乙酰甘氨酸phenylaceturic acid N-苯甲酰甘氨酸hippuric acidβ—羟酰—ACP脱水酶β—hydrdoxyacyl—ACP dehydraseβ-氧化β-oxidation活化activation氧化oxidation 水合hydration断裂cleavage硫激酶thiokinase脂酰—CoA合酶acyl CoA synthase烯酰-CoA水合酶enoyl CoA hydratase β—酮硫解酶β—keto—thiolase电子传递黄素蛋白electron-transfer flavoprotein泛醌氧化还原酶ubiquinone oxidoreductase烯酰-CoA异构酶isomerase甲基丙二酰—CoA消旋酶methylmalonyl-CoA racemase甲基丙二酰-CoA变位酶methylmalonyl—CoA mutase单加氧酶monooxygenase酮体ketone body乙酰乙酸acetoacetateHMG—CoA裂解酶HMG-CoA lyase丙二酰—CoA malonyl—CoA生物素羧化酶biotin carboxylase转羧酶trans carboxylase生物胞素biocytin酰基载体蛋白acyl carrier protein磷酸泛醌巯基乙胺phosphopantetheine 硫辛酰赖氨酸臂lipoyl lysine arm软脂酰-ACP硫脂酶palmitoy—ACP thioesteraseβ—酮酰-ACP合酶β-ACP—ketoacyl-ACP synthase缩合condensation还原reductionβ—酮酰ACP还原酶β—toacylACP reductase脱水dehydration烯酰-ACP还原酶enyl—ACP reductase 软脂酰-ACP硫酯酶palmitoyl thioesterase 脂肪酰-CoA去饱和酶fatty acyl-CoA desaturase亚油酸linoleic acid亚麻酸linoleuic acid必需脂肪酸essential fatty acid混合功能氧化酶mixed-function oxidase脂酰甘油acyl glycerols甘油—3—磷酸glucerol 3—phosphate 磷脂酸phosphatidic甘油磷脂glycerophospholipids磷脂酰乙醇胺phosphatidylethanolamine磷脂酰甘油phosphatidyl glycerol二磷脂酰甘油diphosphatidyl glycerol CDP—二脂酰甘油CDP—diacylglycerol 5’-胞苷二磷酸cytidine diphosphate 尿苷二磷酸uridine diphosphate共底物cosubstrate二羟丙酮磷酸dihydroxyacetonephosphate鞘磷脂sphingolipids鞘糖脂glycosphingolipid缩醛磷脂plasmalogen胆固醇cholesterol类固醇steroids类固醇激素steroid hormines 胆汁酸bile acids 麦角固醇ergosterol甲羟戊酸mevalonic acid蛋白磷酸酶proteinphosphatases三羧酸转运体系tricarboxylate transport systemD-β—羟丁酸脱氢酶D—β-hudoxybutyrate dehydogenase丙二酸单酰-CoA—ACP转酰酶malonyl—CoA—ACP transacetylase蛋白质代谢(protein metabolism)细胞溶胶cytosolically组织蛋白酶cathepsins抗蛋白酶antipain泛肽ubiguitin泛肽-蛋白连接酶ubiquitin—protein ligase多胺polyamine鸟氨酸脱羧酶ornithine decarboxylase丝氨酸脱氢酶serine dehydrogenase 色氨酸氧化酶tryptophan oxygenase酪氨酸氨基转移酶tyrosin aminotransferase氨基转移酶aminotrandferase氧化脱氨基作用oxidative deamination 吡哆醛-5’—磷酸pyridoxal-5’-phosphate吡哆醇pyridoxine吡哆醛磷酸pyridoxal phosphate吡哆胺磷酸pyridoxamine phosphate醛亚胺aldimine腺苷代琥珀酸adenylosuccinate转氨酶transaminase联合脱氨基作用transdeamination神经递质neurotransmitter酪胺tyramine谷氨酰胺合成酶glutamine synthetase 尿素循环urea cycle鸟氨酸ornithine瓜氨酸citrulline精氨酸酶arginase氨甲酰磷酸合成酶carbamoyl phosphate synthetase鸟氨酸转氨甲酰酶prnithine transcarbamoylase精氨琥珀酸酶argininosuccinase精氨琥珀酸合成酶argininosuccinate SynthetaseN—乙酰谷氨酸合酶N-acetylglutamate synthase 丝氨酸转羟甲基酶serine transhydroxymethylase丝氨酸-苏氨酸脱水酶serine-threonine dehydratase苏氨酸醛缩酶threonine aldolase乙醛acetaldehyde氨基丙酮aminoacetone半光氨酸脱巯基酶cysteine desulfhydrase苯丙氨酸氢化酶phenylalanine hydoxylase酵母氨酸sacharopine组氨酸氨裂合酶higtidine ammonia lyase尿苷酸水合酶urocanate hydratase谷氨酸转甲亚氨酶glutamate transformiminase天冬酰胺酶asparaginase天冬氨酸氨裂解酶aspartate ammonia lyase生酮氨基酸ketogenic amino acids生糖氨基酸glucogenic amino acids 亚氨甲酰谷氨酸N-formimino glutamate 酪氨酸酶tyrosinase多巴胺dopamine核糖体ribosome遗传密码genetic code三联体triplet染色体外基因extrachromosomal gene 转录初产物primary transcript添加appending修饰modification异构化isomerization拼接splicing编辑editing再编码recoding断裂基因interrupted gene选择性拼接alternative splicing同源体isoform 错义突变missense mutation无义突变mimsense mutation核糖体移码ribosomal frame shifting 移码突变frame—shift mutation重叠基因overlapping genes同义密码子syninymous codon反密码子anticodon密码子coden简并性degeneracy变偶性wobble蛋白质生物合成protein biosynthesis 无细胞体系cell—free system多聚核糖体polysome读码框架reading frame起始密码start codon终止密码stop codon核糖体结合位点ribosome—binding site核糖体进入部位ribosome entry site胸腺嘧啶核糖核苷ribothymidine假尿嘧啶核苷pseudouridine校正基因suppressor gene回复突变reverse mutation起始因子initiation factor延长因子dlongation factor肽酰转移酶peptidyl transferse转肽transpeptidation移位translocation释放因子release factors核糖体释放因子ribosome releasing factor位移translational frameshifting 翻译跳跃translational jumping信号肽序列signal or leader sequence 信号肽signal sequence信号肽酶signal peptidase信号识别体signa recognition particle,SRP停泊蛋白docking protein翻译后运输posttranslationlal transport多肽链结合蛋白polypeptide binding proteins终止因子termination factor磷酸烯醇式丙酮酸所激酶phosphoenolpyruvate carboxykinase核酸代谢(nucleic acid metabolism)核酸内切酶endonuclease核酸外切酶exonuclease核苷酶nucleosidase核苷磷酸化酶nucleoside phosphorylase 核苷水解酶nucleoside hydrolase腺嘌呤脱氨酶adenine deaminase腺嘌呤核苷脱氨酶adenosine deaminase 鸟嘌呤脱氨酶guanine deaminase尿酸氧化酶utate oxidase5—磷酸核糖焦磷酸5-phosphoribosyl pyrophosphate磷酸核糖焦磷激酶phosphoribosyl pyrophosphokinase5-磷酸核糖胺5—phosphoribosylamine 5-氨基咪唑核苷酸5—aminoimidazole ribotide磷酸核糖焦磷酸转酰氨酶phosphoribosyl pyrophosphate transamidase甘氨酰胺核苷酸glycinamide ribotide 甘氨酰胺核苷酸合成酶glycinamide rihotide synthetase甘氨酰胺核苷酸转甲酰基酶glycinamide ribotide transformylas 甲酰甘氨脒核苷酸合成酶formylglycinamidine ribotide synthetase氨基咪唑核苷酸合成酶aminoimidazole ribotide synthetase腺苷酸琥珀酸裂解酶adenylosuccinate lyase氨基咪唑核苷酸羧化酶aminoinidazole ribotide carboixylase腺苷酸琥珀酸合成酶adenylosuccinate synthetase次黄嘌呤核苷酸脱氢酶inosine—5-phosphate dehydrogenase 鸟嘌呤核苷酸合成酶guanylate synthetase磷酸核糖转移酶phosphoribosyl transferase乳清苷酸orotidine-5’-phoshate氨甲酰磷酸合成酶carbamyl phosphate synthetase全酶holoenzyme天冬氨酸转氨甲酰酶aspartate carbamyl transferase二氢乳清酸酶dihydroorotase二氢乳清酸脱氢酶dihydroorotate dehydrogenase乳清苷酸焦磷酸化酶orotidylic acidpyrophosphorylase乳清苷酸脱羧酶orotidylic acid decarboxylase尿嘧啶核苷酸激酶uridine-5'—phosphate kinase核苷二磷酸激酶mucleoside diphosphokinase复制replication转录transcription翻译translation三联体密码triplet code模板template逆转录reverse transcription逆转录酶reverse transcriptase逆转录病毒retrovirus自我复制self-replication半保留复制semiconservative replication拓扑学topology复制子replicon 起点origin终点terminus转化子transformant反向重复inverted repeatsDNA聚合酶DNA polymerase取代环displacement loop核小体nucleosome信息大分子informational macromolecule指令instruction促突变因子mutator抗突变因子antimutator修复机制reair mechanism复制酶replicase核心酶core enzymeDNA连接酶DNA ligase冈崎片断Okazaki fragment顺反子cistron半不连续复制semidisontinuousreplication前导链leading strand滞后链lagging strand引物合成酶primase拓扑异构体topological isomers拓扑异构酶topoisomerase切口封闭酶nick-closing enzyme旋转酶gyrase连锁体catenane解螺旋酶helicase解链蛋白unwinding protein复制体replisome引发体primosome前引发体preprimosome终止区terminus region自主复制序列autonomously replicating sequence起点识别复合物origin recognition complex 端粒telomere端粒酶telomerase复制许可因子replication licensing factor错配修复mismatch repair直接修复direct repair切除修复excision repair易错修复error-prone repair光复活修复photoreactivation repair 暗修复dark repair光复活修复酶photoreactivating enzyme碱基切除修复base-excision repair核苷酸切除修复mucleotide—excision repair切除酶excinuclease辅蛋白酶coprotease性导sexduction转导transduction接合conjugation转化transformation细胞融合cell fusion受体细胞recipient cell附加体episome转座因子transposable element转座子transposon转座酶transposase解离酶resolvaseRNA聚合酶RNA polymerase全保留方式conservative mode时序调控temporal regulation适应调控adaptive regulation操纵子结构模型operon structural model调节基因regulatory gene操纵基因operator阻遏蛋白repressor protein内含子intron外显子extron调节子regulon协同调节cooperative regulation 激活蛋白activator整合酶integrase增强子enhanser终止子terminator多聚腺苷酸聚合酶polyadenylation细胞代谢调节和基因表达调控(cellular metabolism regulation and gene expression regulation and control)构造单元buliding block 前馈feedforward反馈feedback 一价/单价反馈抑制monovalent feedback inhibition二价或多价反馈抑制divalent ormultivalent feedback inhibition管家基因housekeeping genes组成型表达constitutive expression 可调型表达regulated expression乳糖操纵子模型lac operon model启动子premotor操纵基因operator酶诱导enzyme induction酶阻遏enzyme repression辅阻遏物corepressor阻遏物蛋白aporepressor降解物基因活化蛋白catabolite gene activation protein衰减子attenuator上游控制元件upstream control静默子silencer锌指zinc finger亮氨酸拉链leucine zipper重组体recombinant 分子克隆molecular cloning蛋白质工程protein engineering限制性核酸内切酶restricton endonuclease同尾酶isocaudamers同裂酶isoschizomers回文结构palindrome质粒plasmid载体vector分子重排rearrangement基因文库genomic library多联体concatemer脂质体liposome可调基因regulated genes基因枪gene gun菌落形成单位colony forming unit筛选screening原位杂交in situ bybridization基因组测序genomic sequencing(完整)生物化学常用专业术语中英文对照汇编手册基因定位诱变site-directed mutagenesis包涵体inclusion body整合质粒yeast integrating plasmid 基因治疗gene therapy聚合酶链式反应polymerase chain reaction, PCR。
第4章维生素和辅酶一、选择题1.下列关于激素的叙述哪项是错误的?()[华中农业大学2016研] A.可以影响酶的合成B.可以作为酶或辅酶C.可以影响酶的催化速度D.通过调节起始过程而起作用【答案】B【解析】激素不能作为酶或辅酶。
2.维生素B2可转化为哪种成分?()[厦门大学2014研] A.NADB.HS-CoAC.TPPD.FAD【答案】D3.下列物质是乙酰-CoA羧化酶辅基的是()。
[南开大学2016研] A.生物素B.四氢叶酸C.硫辛酸D.烟酰胺【答案】A二、填空题1.生物素是______酶的辅酶。
[中山大学2018研]【答案】丙酮酸羧化酶2.辅酶NADP+分子中含有的B族维生素是______。
[中山大学2018研]【答案】尼克酰胺(维生素B3)3.在结合蛋白酶分子中,酶蛋白决定酶的____,辅助因子决定酶的____。
[华中农业大学2017研]【答案】专一性;活性4.脚气病(Beriberi)是由于缺乏______引起的疾病,病症包括体重下降、精神萎靡、感官功能衰退、体虚和间歇性心律失常等。
[中国科学技术大学2016研]【答案】维生素B1三、判断题所有的酶都含有辅基或辅酶。
()[中山大学2018研]【答案】错【解析】不是所有的酶都含有辅基或辅酶,只有蛋白质,不含有辅因子的酶称为单纯酶,如脲酶、淀粉酶和一些消化酶等。
四、名词解释辅酶Q[山东大学2017研]答:辅酶Q又称泛醌,为一类脂溶性醌类化合物,带有由不同数目(6~10)异戊二烯单位组成的侧链。
其苯醌结构能可逆地加氢还原成对苯二酚化合物。
是呼吸链中的氢传递体。
五、简答题1.某患者因抗生素过度使用导致严重贫血症及营养不良,多方治疗均不见效,后转入某医院治疗,老专家多次会诊后并未采取常用的治疗手段,而是给患者体内注入适量的健康人的新鲜粪便,该病患身体状况逐渐好转,目前已经痊愈出院。
请用你所学的维生素相关知识,对这一临床案例的治疗依据进行分析。