Thekey differencebetween composite and non composite transposons is thatcomposite transposons have two flankinginsertion sequences while non-composite transposons have inverted repeats instead of flankinginsertion sequences.
转座子是脱氧核糖核酸可以在细菌基因组中转移。它们是移动DNA序列。他们进入基因组的新位置。这些运动会改变细菌基因组的序列,从而导致遗传信息的显着变化。它们是负责在细菌中建立新遗传序列的可转座遗传元素。转座子也称为跳跃基因,因为这些跳跃序列可以阻止转录of genes and rearrange the genetic material of bacterium. Moreover, they are responsible for the movement of drug resistance, antibiotic resistance genes between质粒and chromosomes. There are two types of transposons as composite and non-composite transposons.
CONTENTS
1.Overview and Key Difference
2.What are Composite Transposons
3.What are Non Composite Transposons
4.复合和非复合转座子之间的相似性
5.Side by Side Comparison – Composite vs Non Composite Transposons in Tabular Form
6.概括
What are Composite Transposons?
A composite transposon is a segment of DNA flanked by two copies of similar insertion sequence elements. There is a central protein-coding region in a composite transposon. The genes are often antibiotic-resistant genes. They can also contain catabolic genes. Moreover, composite transposons consist of two inverted repeats.
复合转座子的整个长度作为一个完整的单元移动。TN10是一个复合转座子。它由两端的6.5 kb中央编码区(四环素耐药基因)和1.4 kb倒置插入序列元素组成。
What are Non Composite Transposons?
非复合转座子是另一种类型的原核生物转座子,它们没有两端两端的插入序列。与复合转座子类似,非复合转座子具有编码抗生素耐药性的基因。此外,它们的末端包含重复的序列。这些重复的序列需要进行换位。TN3是一种非复合转座子。TN3非复合转座子在中间有三个基因,而38个碱基对倒末端重复序列。非复合转座子中的基因可能会为抗生素耐药性以外的毒力和分解代谢酶编码。TN21是另一个非复合转座子。
What are the Similarities Between Composite and Non Composite Transposons?
- Both composite and non composite transposons have antibiotic-resistant genes.
- They have inverted repeats as well.
- Moreover, they are mobile DNA segments; hence they can move within the genome.
What is the Difference Between Composite and Non Composite Transposons?
Composite transposons are a type of transposons that have terminal insertion sequence elements and the central coding region. Non composite transposons are a type of transposons that lack flanking insertion sequence elements. They contain only inverted repeats at each end. So, this is the key difference between composite and non composite transposons. Tn10 is a composite transposon while Tn3 and Tn21 are non composite transposons.
Below infographic summarizes the differences between composite and non composite transposons.
概括– Composite vs Non Composite Transposons
Composite and non composite transposon are two types of prokaryotic transposons. Both types of transposons have a central coding region. However, composite transposons have two flanking inverted insertion sequence elements while non composite transposons do not have flanking insertion sequence elements. Instead, they contain repeated sequences required for transposition. Thus, this is the key difference between composite and non composite transposons. Tn10 is a composite transposon while Tn3 and Tn21 are two non composite transposons. Both types of transposons have genes coding for antibiotic resistance and catabolic enzymes. Moreover, they have terminal inverted repeats.
Reference:
1. “Transposable Genetic Elements In Prokaryotes”. Biology Discussion, 2020,Available here.
2.”Transposons | Learn Science At Scitable”. Nature.Com, 2020,Available here.
Image Courtesy:
1. “Composite transposon” By Jacek FH – self-made, based on Image: Composite transposon.jpg(CC BY-SA 3.0)viaCommons Wikimedia
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