酶前體 的英文怎麼說
中文拼音 [qiántǐ]
酶前體
英文
enzyme precursor-
They alter the way it cleaves amyloid precursor protein
它們改變了這個酶切割澱粉樣蛋白前體的方式。The results were as follow : in the process of its male organ development, these are many abnormalities, such as : premature tapetal degradation, giant tapetal cells, the great vocalization of the tapetal cells and inadaptable function of callose enzyme, which lead abnormal and premature degradation microspores and male gametophytes
實驗結果表明： 1蝟實的雄性生殖器官在發育過程中，出現絨氈層細胞的液泡化、肥大、提前降解及不適時釋放胼胝質酶等異常現象，造成蝟實花粉發育過程中出現畸形、解體。De duve was able by 1960 to show that lysosomes were distinct particles, using centrifugation techniques.
德杜弗在1960年以前利用離心技術已能顯示溶酶體是特殊的顆粒。A homolog of ga sbeta - hydroxylase gene expression pattern was examined. hybridization signals of this gene could be detected at day 5 and however, they appear again after day 10 when explants cultured with hormones. it has the similar pattern when the explants cultured without hormones or uncultured
風信子ga羥基化酶類似基回在外植體表達，在含有外源撒素條件下培養的前5天受到激素的抑制而幾乎不表達，第10天開始在花分生組織中表達。Wax precursors are synthesized in the plastids and enlongated to very long acyl - coa chains as direct processors in er. once the very long acyl - coa chains are synthesized, they are converted to cuticular waxes by four different pathways
一般認為蠟質前體是在質體中合成並在內質網中延伸成特長鏈脂酰輔酶a ，合成的特長鏈脂酰輔酶a通過四種不同的途徑轉化成蠟質組成成分。They are involved both in the production of mature proteins, acting as processing enzymes, and in the degradation of damaged or non - functional proteins [ 1 " 8l in plant plastids, proteases function in protein degradation seem to act to adjust the stoichiometry of subunits in supramolecular complexes, as well as to regulate the stoichiometry between different supramolecular complexes in response to environmental changes and process the nuclear - encoded preproteins in the stromal
除了在相關蛋白質轉錄和翻譯方面的調控外，專一降解這些蛋白的蛋白酶活性以及轉錄翻譯量的上升也會加強對這些蛋白質的降解。雖然到目前為止對光系統中蛋白酶的了解尚且不如對光系統中各種多肽以及蛋白色素復合體的了解，但是對類囊體和葉綠體中蛋白酶的研究已經進展到相當深度了。Isolation of protoplasts from different stage of protonema and cauliform revealed that 15 - 17 days protonema was the best material because of the higher protoplasts output. there was less protoplasts when the protonema was over three weeks old
（ 4 ）通過對原絲體預處理不同時間觀察表明酶解前用0 . 02 tween - 80預處理30min能明顯提高原生質體的產量。Introduction telomerase is a ribonucleoprotein reverse transcriptase that synthesizes telo - meric dna sequences using its rna as template. it can remedy the loss of te - lomere after cellular mitosis, maintain telomere length and stabilize chromosome
前言端粒酶（ telomerase ）是一種核糖核蛋白逆轉錄酶，能以自身的rna為模板，從頭合成染色體末端的端粒dna ，彌補細胞分裂時端粒dna的丟失，維持端粒的長度並穩定染色體。Abstract : a novel enzymatic reaction ? ammonolysis was introduced in thenineties. this reaction not only provides a synthetically useful and mild alternative method for the synthesis of amides, but also can be used for the kinetic resolution of chiral alcohols or chiral carboxylic acids. in addition to enantioselective hydrolysis, esterification and transesterification, ammonolysis also shows high enantioselectivity in the resolution of racemates
文摘:酶促氨解反應是20世紀90年代中期發現的一種新型反應，在脂肪酸酰胺的合成、手性藥物（手性酸及手性醇等）的拆分中顯示出巨大的應用潛力，是除立體選擇性水解、酯化、轉酯反應之外的另一具有較大開發應用前景的酶促新型反應。Many glycoproteins of lower and higher eucaryotes are attached to the plasma membrane by means of a glycosylphosphatidylinositol ( gpi ). gpi - anchored proteins are synthesized on membrane - bound ribosomes. upon translocation of the pro - protein across the endoplasmic reticulum membrane, gpi : protein transamidase ( gp1t ) recognize and removes the carboxy terminal gpi signal sequence and attaches a gpi molecule to the newly exposed carboxy terminal amino acid
Gpi化前體蛋白在依附於膜的核糖體上合成，當其易位穿過內質網（ er ）膜后，被gpi ：蛋白質轉酰胺基酶（ gpit ）識別， gpit在移走其羧基端gpi信號序列的同時將gpi分子連接至新生成的氨基酸位點上。Carville dg, dirmtrijevic n, walsh m, et al. thrombus precursor protein : marker of thrombosis early in the pathogenesis of myocardial infarction [ j ]. clin chem, 1996, 42 ( 9 ) : 1537
諸俊，何曉東，葉書來，等.急性心肌梗死與不穩定心絞痛患者血栓前體蛋白和肌酸激酶的檢測[ j ] .中國動脈硬化雜志， 2002 ， 10 （ 2 ） ： 165 - 166A approximately 460bp dna fragment was amplified by pcr from lactococcus lactis nizo r5 genome. the primers used in this study comprised the following nucleotide sequences : 5 " - cgcgaattcgatataggtttattgagt - 3 " and 5 " - atgaagcttatccatgtcagaactaa - 3 ". conditions used for the pcr consisted of 30 cycles of 94 ? for0. 5min, 45 ? for imin and 72 ? for 1. 5min, plus one additional cycle of 72 for 10min
根據已發表的乳鏈菌肽前體基因的dna序列，設計兩條引物並引入酶切位點。以lactococcuslactisr5基因組dna為模板， pcr反應條件： 94變性30s ， 45退火60s ， 72延伸90s ，反應進行30個循環。成功擴出一條約460bp的dna片段。But in s. mycarofaciens, there is no distinctive propionate kinase, so that the utilization rate of propionic acid is lower than that of acetic acid. for this reason, it is hoped that the higher producers would be obtained by protoplast interspecies fusion between s. mycarofaciens and s. erythreus, which would transfer propionate kinase of s. erythreus to s. mycarofaciens. therefore, the fusion cells could use propionic acid as precursor in synthesis of mdma _ ( 1 ), which would reduce the production costs
根據文獻報道，紅黴素鏈黴菌中的丙酸激酶對丙酸的利用率是對乙酸的利用率的13倍；而在生米卡鏈黴菌中，無特異的丙酸激酶，菌體對丙酸的利用低於對乙酸的利用，因此希望利用原生質體種間融合的方法將紅黴素鏈黴菌的丙酸激酶基因轉移到生米卡鏈黴菌中，從而使融合子能夠利用丙酸鹽作為合成mdma _ 1的前體，提高mdma _ 1的產量，降低生產成本。The supernatant fraction and the precipitation fractions were analyzed by western blotfor strain dh5 a / pkkfpga, 5 - 10 % pga precursors formed as inclusion bodies in the cytoplasm while no inclusion bodies formed in the periplasm, this suggested most pga precursors were transported to the periplasm and matured to active pga and indicated that the maturation of pga in strain dh5 / pkkfpga was limited by the translocation step
Western印跡分析表明對于菌株dh5 pkkfpga ， 5 - 10的原前體青黴g素酰化酶在胞內形成了包涵體，說明其成熟的限速步驟在胞內的運輸階段，而菌株dh5 psmlfpga則無明顯包涵體形成，說明菌株dh5 psmlfpga改善了青霉素g酰化酶的合成流，因而其表達能力高於菌株dh5 pkkfpga 。Construction and expression of tandem multi - copy gene edcoding ca ( 1 - 8 ) me ( 1 - 10 ) hybrid fused acidic peptide to improve antimicrobial peptide ' s expression, a novel mass - production method is proposed. it is based on the neutralization of the positive charges of antimicrobial peptide by fusing to an acidic peptide to avoid the lethal effect of the expressed peptide on the host cells
為提高抗菌肽的表達，設計在抗菌肽基因的n端融合一段編碼酸性短肽的片段作為對抗菌肽前體的模擬，以減輕表達產物對宿主的毒性；同時通過含有酶切位點的接頭將該融合肽基因以同向串連的方式連接成多拷貝基因。The p33, which is considered to be the precursor of p27 and coordinate to e. coli tgi expressed phl, is expressed and excreted at lag phase. then a splicing process is supposed occurred during the exponential phase resulting in production of mature phospholipase p27. the p32 p31 p30, p29 are believed to be intermediates of this splicing process
但在菌體生長進入穩定期后，僅產生p60和p27兩種成熟的磷酯酶，其中p33為p27的前體蛋白，與phl應為同種蛋白，經剪切作用產生一系列的中間產物p32 、 p31 、 p30 、 p29 ，最終產生成熟蛋白p27 。In this process, protein translocation machineries of the outer and inner membranes, at least three major translocase complexes, are needed to ensure the proper import of precursor proteins
在此過程中，需要線粒體外膜和內膜的蛋白質運輸機器（至少三種主要的移位酶復合物）來保證前體蛋白質的正確運輸。Amyloid plaques form when a molecule called amyloid precursor protein ( app ) is chopped up by two enzymes known as beta - secretase and gamma - secretase
當一種叫澱粉樣前體蛋白（ app ）的分子被兩種酶? ?分別叫作貝塔-分泌酶和伽瑪-分泌酶? ?切斷時就形成了澱粉樣斑塊。Rna polymerase i synthesizes the three largest rrnas. rna polymerase ii mainly produces mrna encoding proteins and most of sn rnas, and rna polymerase iii makes 5s rrna and trna, as well as a few small nuclear rnas. the transcription sites of the polymerases have been studied since early 1980s
真核生物細胞核中有三種rna聚合酶，即rna聚合酶、和，它們分別轉錄產生不同的rna ，其中rna聚合酶（ pol ）轉錄合成45srrna前體；聚合酶（ pol ）轉錄合成mrna前體及大多數snrna ；聚合酶（ pol ）轉錄合成5srrna 、 trna和一些小分子rna 。B - actin primers : forward 5tcc tat cgg cct cct cct ac 3 " and reverse 5aga atg tag tcc gcc agg tc 3 ", designed for 200bps. saodn oligodeoxynucleotide of pkb : stac agc ctg aga gga cct acc tg3 "
在有絲分裂期， edc25經歷216位ser磷酸化同時其水解酶活性增強，活化的mpf磷酸化並活化edc25 ，形成正反饋，結果進一步活化mpf前體，活化的mpf促進細胞周期g2 / m期轉換。分享友人