关键区别 - 单科传播vs polycistronic mRNA
这mRNA分子携带遗传信息以产生各自的蛋白质。在所有生物体中,细胞的总mRNA被称为蛋白质。translation。这re are several differences betweenprokaryotic and eukaryoticmRNA molecules. The eukaryotic mRNA is synthesized as a large precursor molecule in the核which later changes. The eukaryotic mRNA encodes only for one protein and invariably represents a single gene. Hence, they are said to be monocistronic. The prokaryotic mRNA carries the sequences which encode multiple proteins. Hence, they are called as polycistronic mRNA. Especially, in a polycistronic mRNA, a single mRNA is transcribed from a group of adjacent genes. These groups are termed as operons such as;Lac operon,,,,galactose operon and色氨酸操纵子。这关键区别在单科和多水和多相mRNA之间that monocistronic mRNA contains genetic information of a single protein while the polycistronic mRNA carries the genetic information of several genes which are translated into several proteins.
CONTENTS
1。概述和关键差异
2。What is Monocistronic mRNA
3。What is Polycistronic mRNA
4。Similarities Between Monocistronic and Polycistronic mRNA
5。——Monocistronic vs Polycis并排比较tronic mRNA in Tabular Form
6.Summary
What is Monocistronic mRNA?
mRNA被称为单科发电岩,因为它携带遗传信息只能翻译单个蛋白质。真核mRNA是单科的,它包含仅代码为一种蛋白质的遗传信息。因此,它们在翻译过程后产生单蛋白。真核mRNA本质上总是单科的。
单科传播mRNA只有一个称为“ ORF”的单个开放式阅读框。这个开放的阅读框对应于特定的单个基因转录本。真核mRNA分子在细胞核中合成为大的前体。后来,大量减小以及其他几个重要的修改也进行了。之后,它被运送到cytoplasm。因此,它在不同的细胞室中合成并表达。由于转录后修饰,真核mRNA高度稳定。根据特定功能,他们的半衰期可能是几个小时或更长时间。
什么是polycistronic mRNA?
多余的mRNA包含codons一个以上的Cistron。从一个以上的基因(Cistron)转录多重mRNA,并具有许多启动和终止密码子。它还代码为多种蛋白质。多余的mRNA带有几个开放式阅读框(ORF)。每个人都被翻译成一个多肽链。尤其是在多重水mRNA中,从一组相邻基因转录单个mRNA。
原核生物mRNA据说是多重的。同时,细菌mRNA非常不稳定,翻译后它们会紧密降解。这细菌和古细菌have polycistronic mRNA in their cells. The polypeptides that are made from polycistronic mRNA have related functions. Their coding sequences are regulated together by a regulatory region. This regulatory region contains a promoter and an operator. The mRNAs which are dicistronic or bicistronic (encodes for two proteins) are also categorized under polycistronic mRNAs.
What are the Similarities Between Monocistronic and Polycistronic mRNA?
- Both of them carry genetic information.
- Both are capable of producing proteins.
- Both containuracil(U)核苷酸代替硫山(t)核苷酸。
- 两种mRNA都是信使mRNA类型,对于细胞代谢和功能非常重要。
What is the Difference Between Monocistronic and Polycistronic mRNA?
单科vs polycistronic mRNA |
|
据说单科mRNA是单科的,因为它包含单个蛋白质的遗传信息。 | 据说多子发作的mRNA被称为多物种,因为它携带了几种基因的遗传信息,这些基因被转化为多种蛋白质。 |
蛋白质编码的数量 | |
Monocistronic mRNAis coding for only one protein. | 多水mRNA正在编码多种蛋白质。 |
Number of Initiation and Termination Condons | |
单科mRNA从单个基因(Cistron)转录,并具有一个启动密码子和一个终止密码子。 | 从一个以上的基因(Cistron)转录多用电话mRNA,并具有与起始和终止密码子一样多。 |
真核和原核的存在 | |
Monocistronic mRNApresents in eukaryotic organisms like a human. | 多水mRNA呈现在细菌和古细菌等原核生物中。 |
Post-Transcriptional | |
单科传播mRNA需要转录后修饰。 | 多水mRNAdoes not need post-transcriptional |
Stability and Lifespan | |
由于转录后修饰,单科传播mRNA是稳定的,并且具有更多的寿命。 | 由于缺乏转录后修饰,并且寿命较短,因此多形mRNA是不稳定的。 |
开放式阅读框数(ORF) | |
Monocistronic mRNAis having a single open reading frame (ORF). | 多水mRNAis carrying several open reading frames (ORFs). |
概括 -单科vs polycistronic mRNA
这messenger mRNA is highly important RNA molecule which carries genetic information that can produce respective polypeptide chain or protein. According to the theory of central dogma proposed by Watson and Crick, the mature mRNA is translated into a protein later that has a specific function. These proteins are regulating the cellular metabolism and other functions. Eukaryotic mRNA molecule is monocistronic since contains the coding sequence only for a single polypeptide. The prokaryotic individuals like bacteria and archaea have polycistronic mRNA. These mRNA are having transcripts of several genes of a particular metabolic process. This is the difference between monocistronic and polycistronic mRNA.
下载Monocistronic vs Polycistronic mRNA的PDF版本
您可以下载本文的PDF版本,并根据引文注释将其用于离线目的。请在此处下载PDF版本单科斯通和多水的mRNA之间的差异
参考:
1.尼维。“医用猫。”1970年1月1日,Monocistronic vs. Poly Cistronic mRNA。在这里可用
2。“Messenger RNA.” Wikipedia, Wikimedia Foundation, 10 Dec. 2017.在这里可用
图片提供:
1。’Gene structure eukaryote 2 annotated’By Thomas Shafee – Shafee T, Lowe R (2017). “Eukaryotic and prokaryotic gene structure”. WikiJournal of Medicine 4 (1). DOI:10.15347/wjm/2017.002. ISSN 20024436.,(CC由4.0)通过下议院维基梅迪亚
2。’Gene structure prokaryote 2 annotated’ By Thomas Shafee – Shafee T, Lowe R (2017). “Eukaryotic and prokaryotic gene structure”. WikiJournal of Medicine 4 (1). DOI:10.15347/wjm/2017.002. ISSN 20024436.,(CC由4.0)通过下议院维基梅迪亚
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