本研究旨在构建具有猪 MSTN 前肽基因定点突变的真核表达载体。
This research intended to construct a eukaryotic expression vector with a site-directed mutation of porcine MSTN propeptide gene.
组蛋白 H3与H2A，H2B，H4 共同构成了真核生物核小体的八聚体核心。
Histone H3 along with H2A, H2B, and H4 form the eukaryotic nucleosome octamer core.
问题是，虽然胞内同生在真核生物中非常常见，这往往造成吞噬其他细胞，但是在较为硬质的细菌难以察觉。
The trouble is that, while cells within cells are common in eukaryotes, which often engulf other cells, they're vanishingly rare in more rigid bacteria.
但是，所有这些DNA需要高能耗，大量成本甚至削弱巨大的细菌——阻止它们成为更为复杂的真核生物。
But all this DNA has a big energetic cost that cripples even giant bacteria — stopping them from turning into more complex eukaryotes.
“这给了真核生物基因原料，使它们能够积累新的基因。从规模上来讲，重大基因家族和调节系统对于细菌来讲是完全无法负担的”莱恩博士说。
"This gives eukaryotes the genetic raw material that enables them to accumulate new genes, big gene families and regulatory systems on a scale that is totally unaffordable to bacteria," said Dr Lane.
最为熟知的应当是真核域，尽管对于地球生物圈而言，它可能并不是最重要的部分。
The most familiar domain, though arguably not the most important to the Earth's overall biosphere, is the eukaryotes.
但什么东西可以使真核生物积聚如此之多、甚至有些多余的基因和蛋白质？
But what enabled eukaryotes to accumulate all these extra genes and proteins?
但需要特别注意的是：他只是统计了真核生物，也就是那些细胞相对复杂的动物，而把细菌以及古生菌排除在外了。
But there are some important caveats: it counts only the eukaryotes, that is, critters with relatively complex cells.
像其他古生菌一样，这种古生菌的基因组同时与真核生物和细菌的基因组具有一些相似性。
Like other archaeans, their genomes share some similarities with both eukaryotes and bacteria.
古生菌还具有完全与细菌和真核生物不同的细胞膜。
Archaeans have cell membranes that are completely different from both bacteria and eukaryotes.
莱恩和马丁总结而这很可能解释为什么复杂的生命——真核生物——在地球的历史上仅进化了一次。
And that, Lane and Martin conclude, may well explain why complex life — eukaryotes — only evolved once in all of Earth's history.
我们仍然需要解释的是更特化的真核生物的磷酸化途径是怎么进化而来并取代了细菌的系统。
What still needs to be explained is how the more typical eukaryotic phosphorylation cascades evolved and came to replace the bacterial systems.
线粒体给予真核生物每个基因四或者五个数量级多的能源，这使他们能够穿过鸿沟的墙壁，打开直通道。
Mitochondria give eukaryotes four or five orders of magnitude more energy per gene, and that enabled them to tunnel straight through the walls of the chasm.
卷曲藻可能是一个菌落，或者一种真核生物——其包裹在细胞膜内的细胞功能已经出现分化的生物体。
Grypania may have been either a bacterial colony or a eukaryote - an organism with specialized cells, enclosed in a membrane.
我们有的一切都属于我们原核生物的祖先，所以我们继续在真核生物中发现原核生物系统并不新鲜；实际上，如果我们没发现那才奇怪呢。
We owe everything to our prokaryotic ancestors and so it is not surprising that we continue to find prokaryotic systems in eukaryotes; in fact, it would be surprising if we did not.
虽然，像细菌一样，古生菌也没有细胞核，但是它们与你我这样的真核生物具有其他共同的特性。
While, like bacteria, archaeans don't have a cell nucleus, they share other traits with eukaryotes like you and me.
但我能够感受到，我们存在的真核——也就是我们的英灵，他早已是智慧而又开拓的存在。
But I experience that the hero - the truth at the core of my existence - is already wise, and enlightened.
这种病毒可能具有某种独特的结构，这种结构是能够影响细菌与真核生物的病毒所不具有的——它不得不像其感染的生物体一样，能够在同样极端的环境中生存。
This virus may have a unique structure not found in viruses affecting bacteria and eukaryotes-it has to be able to survive in the same extreme environment as the organism it infects.
许多研究小组力求确定一个真核核糖的结构（看到向往的结构）。
Many research teams have been striving to determine the structure of a eukaryote ribosome (see 'Structures of desire').
Giardia和动物以及真菌几乎没什么历史渊源，有人认为它与最初的古真核生物很相似。
Giardia is very distantly related to animals and fungi, and some think it resembles the very first eukaryotes.
26岁的法尔范也是所效力俱乐部沙尔克04的真核所在，上个赛季，沙尔克能够在欧冠赛场上取得前四强的历史性成绩与他的表现是分不开的。 法尔范是在周五的训练中受伤的，他需要接受进一步的扫描检查以确定伤势。
The 26-year-old, who inspired his German club side Schalke 04 to the semi-finals of last season's UEFA Champions League, sustained a thigh injury in training on Friday.
争论的结果不仅仅影响我们对早期真核生物进化的理解，还影响我们对贾第虫属生物学的观点。
The outcome of this debate affects not only our understanding of early eukaryotic evolution, but also our view of Giardia biology.
这并不能排除贾第虫属和副基总目的早期分化，回答这样的问题需要知道真核生物树的根在哪里，这是个难题。
This does not preclude an early divergence for both Giardia and parabasalids, for this depends on where the root of the eukaryotic tree lies, which is difficult to resolve.
叶绿体是植物细胞内的一种重要细胞器，它起源于早期具有光合能力的原核生物与真核生物的内共生事件。
Plastids are essential organelles of plant cells and it is believed that plastids have arisen from an endosymbiotic event between a protoeukaryote and a photosynthetic prokaryote.
原核生物与真核生物之间最大也是最主要的区别就在于真核细胞在特殊的代谢活动发生的地方包含了拥有膜包围的间隔间。
The major and extremely significant difference between prokaryotes and eukaryotes is that eukaryotic cells contain membrane-bound compartments in which specific metabolic activities take place.
原核生物的基因与真核生物的基因在组织形式和表达方式方面有哪些主要的区别？
What are the most significant differences between the organization and expression of prokaryotic genes and eukaryotic genes?
纤毛虫是单细胞的原生动物，在进化上属于低等的真核生物，但其各细胞器之间囊泡运输系统极为完善。
Ciliate, a unicellular protozoa and low eukaryotes in evolution, has perfect vesicular trafficking system among organelles.
这是第一次从原核到真核再到原核生物的跨生物种类的基因组转移。
This is the first time that genomes have been transferred between branches of life—from a prokaryote to eukaryote and back to a prokaryote.
这是第一次从原核到真核再到原核生物的跨生物种类的基因组转移。
This is the first time that genomes have been transferred between branches of life—from a prokaryote to eukaryote and back to a prokaryote.
应用推荐