key gene 中文意思是什麼

key gene 解釋
關鍵基因
  • key : n 1 鑰匙。2 要害，關口，要沖。3 關鍵，線索，秘訣；解法。4 （外國書的）直譯本，圖例，題解，圖解，...
  • gene : n. 【生物學】基因。 dominant gene顯性基因。
  1. Many legume plants may produce the beneficial isoflavones, which are vital to the formation of nitrogen - fixing root - nodules and the disease resistance response of plants. white clover ( trifolium repens ), a high quality legume forage, however, has little isoflavones. to improve the isoflavone contents of such forage, an available strategy is to introduce gene ( s ) encoding the key enzyme ( s ) in the biosynthesis pathway of insoflavones

    許多豆科植物中都含有異黃酮類化合物，異黃酮對植物根瘤的形成和植物的防禦反應至關重要，但是在牧草白三葉中缺乏這種有益的化合物，因此通過轉基因實驗將異黃酮合成酶基因導入白三葉中，提高其異黃酮的含量，增加白三葉的營養價值。
  2. So gaining vp7 gene and its expressing product is key to the preparaion of the new type vaccine and specific diagnosis anigen

    因此，該基因的克隆及表達，對于制備新型疫苗和特異性診斷抗原具有重要意義。
  3. They are also the key components of insect - baculovirus expression system ( bevs ), which has been one of the four main expression systems in gene engineering

    同時，桿狀病毒昆蟲細胞表達系統是一類重要的真核表達系統，現已成為目前基因工程四大表達系統之一。
  4. By applying electrophysiological techniques on normal and gene knock - out mice, these researchers show that in the hippocampus, a brain area important for memory formation, bdnf is the only key protein required for the expression of late - phase long - term potentiation, a cellular model of long - term memory

    研究人員分別在正常和基因敲除小鼠身上以電生理技術作實驗，發現在它們的海馬區（腦部組成記憶的一個重要部位）內， bdnf是造成長期記憶的細胞機制- -晚期長時程增強- -表現時所需的唯一主要蛋白質。
  5. Part 1 : identification of a novel gene, tsarg2, and its sequence character cloning new apoptosis - related novel gene is a key to further understanding of apoptosis mechanism and the biological process of germ cell, and it is of momentous significance on clarifying physiology and pathology process of spermatogenesis. to rapidly attain human novel gene full - length cdna sequence, the gene - specific primers and the vector - specific primers have been designed for successful performing nested pcr and draft human genome searching to rapidly identify the tsarg2 ( genebank accession number ay040204 ) 5 " end from a human testis cdna library by using a cdna fragment ( genebank accession number be644542 ) as a electronic probe, which was significantly changed in cryptorchidism and represents a novel gene. furthermore, a mouse homologue of this gene was identified ( genebank accession number af395083 ) by lab on - line

    本研究分為三個部分，其主要實驗方法及實驗結果如下：第一章tsarg2基因的克隆與序列分析從已獲得的在隱睪和正常睪丸對照中表達量有明顯差異的est片段（ be644542 ）入手，設計了基因特異性引物和載體特異性引物進行巢式pcr擴增，結合人類基因組草圖搜索法，從睪丸cdna文庫中快速分離出人類睪丸凋亡相關基因的5末端而獲得全長cdna ， genbank登錄號為ay040204 ，同時應用生物信息學的方法克隆了該基因在小鼠中的同源基因， genbank登錄號為af395083 。
  6. For example, while seeking the gene responsible for making betaglobin, a key component of the hemoglobin protein that transports oxygen through the bloodstream, scientists identified a dna sequence that looked like a globin gene but could not possibly give rise to a protein

    舉例來說，科學家在進行染色體定位，希望找出在血液里負責運送氧氣的血紅素中、一種關鍵組成物球蛋白的基因位置時，卻發現另一段dna ，序列看起來像是球蛋白基因，但顯然不可能製造出蛋白質。
  7. Background : members of homeobox gene family largely encode transcription factors that are required in key developmental events

    背景：同源異型框基因家族成員多編碼轉錄因子，控制發育的關鍵事件。
  8. One particularly bad gene leads to huntington ' s disease, which progressively destroys key nerve cells

    一個壞基因可以導致遺傳性慢性舞蹈病的發生，此病能逐漸破壞人體中關鍵性的神經細胞。
  9. With the acceleration of extinction of species, biodiversity conservation is extensively concerned. the extinction of species is concerned with the degree of threat by biotic and abiotic factors. so, taking action to preserve plant species is very necessary and paramount before their extinction. one of the most effective biological techniques to conserve the biodiversity is the establishment of genebanks, i. e. ex situ conservation. the elucidation of various factors that regulate seed viability and vigor in storage is essential. an ideal condition to prolong the longevity is mainly depended on seed water content, temperature, humidity and types of containers used during storage. the optimum stage of seed maturity, harvesting techniques and processing, in addition to physiological features such as degree of dormancy, also play key roles in seed storage. certainly, desiccated seeds deteriorate with time even under extremely good genebanking conditions. according to seed storage behavior, it is necessary to consider three principal factors : storage environment, storage duration and plant species which will affect seed survival under good genebanking conditions. the present review is an attempt to discuss the importance of the aforementioned aspects of seeds in detail in order to conserve plant germplasms ( especially wild rare and endangered plants ) for ex situ conservation through seed - gene bank

    一個物種的滅絕是與其受生物因子和非生物因子的威脅程度相關的.隨著物種的加速絕滅，保護生物多樣性受到廣泛地關注.保護生物多樣性的最有效的生物技術之一是建立種子基因庫，進行遷地保護.種子庫理想的貯藏條件主要取決于種子含水量、貯藏環境（如溫度和濕度）和貯存種子的容器.進行種子貯藏，了解種子生命力和活力的影響因子的作用機理是十分重要和必要的.除了種子自身的生理特徵外，種子的貯藏壽命與種子成熟度、收獲技術、加工處理方法也是息息相關的.即使在最適的庫存條件下，種子也會隨時間發生劣變.因此，必須根據種子特定的貯藏行為，加以考慮影響種子存活的3個主要方面（貯藏環境、貯藏期和植物種類）而選擇有效的貯藏方案.本文試圖討論種子貯藏生理的幾個重要方面及其需解決的技術問題，以便更好地通過種子基因庫，長期有效地保存植物種質資源
  10. The key stage of fabricating gene chip is pretreatment of glass surface including the processes of nh3h2o treatment, aminosilane treatment and aldehyde treatment. the pretreatment can grow active group that can bind probe effectively on the surface of glass slide. as a result, the actively treated glass slide can suit for fabricating in - situ synthesis high density gene chips

    基因晶元制備技術的關鍵步驟是玻片表面預處理，即對玻片表面進行羥基化、氨基化和醛基化處理，使表面生長的活性基團能有效固定寡核苷酸探針，以滿足原位合成高密度基因晶元對玻片的要求。
  11. In e coli, dna polymerases are key enzymes involved in two distinguished pathways contributing to untargeted mutagenesis. replication of dna by pol v ( umuc ), in the presence of umud1, reca and single strand binding protein ( ssb ), is highly mutagenic and exhibits a predominant mutation pattern of base transversion. another error prone polymerase involved in untargeted mutagenesis is pol iv, encoded by dinb gene

    在umud ' ， reca和單鏈結合蛋白ssb的協助下， polv （ umuc ）能在單鏈模板上催化dna合成並產生高頻率的以堿基顛換為主要形式的突變；另一個與非定標性突變有關的易誤dna聚合酶是pol ，為dinb基因的編碼產物。
  12. It was confirmed that the key enzyme of coq10 synthesis is p - hydroxybenzoate polyprenyltransferase, encoded by gene ubia in e. coli and lacks specificity to the aggregation length of its substrate ( polyisoprenyl pyrophosphate ). if gene ubia can be introduced into psb and is high expression in psb, a recombinant strain producing coq10 could be obtained. consequently, the productive cost will decrease sharply

    業已證實coq _ （ 10 ）生物合成的關鍵酶為對羥基苯甲酸聚異戊二烯焦磷酸轉移酶（在大腸桿菌中該酶由ubia基因編碼） ，該類酶對底物聚異戊二烯焦磷酸（ ppp ）的聚合長度並無特殊要求。
  13. Many people dream of having a smarter brain. princeton neurobiologist joseph z. tsien found the key. in september he announced that he ' d built a better mouse by altering a gene that affects learning and memory

    普林斯頓神經生物學家joseph z . tsien就找到了這把開啟智慧之門的鑰匙：他於九月宣布，通過改變影響學習和記憶能力的基因培養出了一隻聰明的老鼠。
  14. Streptomyces whig gene is a key gene encoding a development ally important rna polymerase sigma factor ( awhig ), which specifically initiates development program and determines the developmental fate of the cell

    Whig基因編碼一個發育上重要的rna聚合酶因子，特異性地起始發育程序，決定菌絲細胞的發育命運。
  15. Therefore, we think that the expression of chs gene played a key role in accumulation of anthocyanin in light - dependent materials

    因此，我們認為在光敏感型試材中chs基因的表達對花青素的積累起關鍵的作用。
  16. Acetylornithine deacetylase is the key enzyme of producting l - methionine. we mainly do research work on the construction of acetylornithine deacetylase gene - engineering strain and characteristic of proteinase. in order to get high expression deacetylase strain, we obtain the gene by pcr arge gene. the product ( 2800bp ) was cloned into puc19 plasmid and confirmed with blue / white dot screening > restriction enzyme analysis and pcr. then taking the nucleotide sequencing compared with the sequence at blast of u. s. a. we constructed a high expression of gene - engineering strain - pxj 128 which containing the arge gene on the high expressing system of pxji18 with activity of acetylornithine deacetylase above 20000u / g

    為了獲得高效表達的脫乙酰鳥氨酸酶工程菌株，在工程菌技術改造及其固定化研究做了進一步的研究和探討。我們採用基因工程技術，通過pcr技術擴增出了酰化酶關鍵酶基因?脫乙酰鳥氨酸酶基因arge ，將其克隆到puc19載體中，經酶切鑒定、 pcr鑒定篩選出重組陽性質粒，並測序鑒定，通過美國blast程序進行了基因數據庫相似性比較分析。
  17. In the third part of the paper, the express of design knowledge, relations between product model and researching methods are discussed. after indicating one viewpoint that the key of product modeling is the express of design knowledge this chapter gives a matter - gene model for conceptual design orientated for matter element transformation and genetic algorithm

    第三章分析了設計知識的表示，模型與求解方法的關系，提出產品模型問題的實質是面向求解方法的設計知識表示，並據此建立了面向物元變換與進化求解相結合的物元基因模型。
  18. Researchers in japan used a technique called rna interference to silence a key gene for making caffeine in coffee plants

    日本的科學家用rna干擾素的技術來抑制咖啡樹的主要造咖啡因基因的生長。
  19. London, june 15 - scientists in the united states have identified a key gene involved in long - term immunity against infections in a finding that could play an important role in vaccine research

    倫敦， 6月15 -美國科學家發現了一個重要的，參與長期免疫效應的基因.基因的發現將會在免疫疫苗研究中扮演重要角色
  20. With the development, immaterial cultural construction is more than more the best key gene influencing the development in the area, which becomes a import stretch policy measure in order to boost up the area competition by the government

    隨著發展，區域非物質文化的建設日益成為影響區域發展的最關鍵的因子，成為許多政府為增強區域競爭優勢而選擇的一種重要的彈性政策措施。
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