What is ITS2 gene?

The internal transcribed spacer 2 (ITS2) region of nuclear ribosomal DNA is regarded as one of the candidate DNA barcodes because it possesses a number of valuable characteristics, such as the availability of conserved regions for designing universal primers, the ease of its amplification, and sufficient variability to …

How is mitochondrial DNA transcribed?

Transcription initiation Transcription in human mitochondria is driven by a DNA-dependant RNA polymerase called POLRMT, which is structurally similar to RNA polymerases in T3 and T7 bacteriophages [7,8]. This includes high sequence homology to the C-terminal catalytic core of the enzyme [9].

What is an internal transcribed spacer used for?

Internal transcribed spacer (ITS) is a piece of nonfunctional RNA located between structural ribosomal RNAs (rRNA) of a common precursor transcript, which is especially useful for elucidating relationships among congeneric species and closely related genera (Hao et al., 2010).

What is non transcribed spacer?

Spacer DNA is a region of non-coding DNA between genes. The terms intergenic spacer (IGS) or non-transcribed spacer (NTS) are used particularly for the spacer DNA between the many tandemly repeated copies of the ribosomal RNA genes.

What is ITS1 and ITS4?

ITS1 and ITS4 are general primers that amplifies the Internal Transcribed Spacer region for identification purpose.

What is rbcL gene?

The rbcL gene is a part of DNA sequence located in cpDNA and has a chance to be used as a DNA barcode [14–17] because this coding region is given universality and ease in amplifying and analyzing [18]. This gene provides many characters to study phylogenetic because it has full length approximately 1400 bp [19].

Is mitochondrial DNA circular or linear?

circular
The mitochondrial genome is circular, whereas the nuclear genome is linear (Figure 3). The mitochondrial genome is built of 16,569 DNA base pairs, whereas the nuclear genome is made of 3.3 billion DNA base pairs. The mitochondrial genome contains 37 genes that encode 13 proteins, 22 tRNAs, and 2 rRNAs.

What are the differences between mitochondrial DNA and nuclear DNA?

Mitochondrial DNA is short compared to the nuclear DNA. The main difference between mitochondrial DNA and nuclear DNA is that mitochondrial DNA is encoded for the genetic information required by mitochondria whereas nuclear DNA is encoded for the genetic information required by the entire cell.

What is an internal transcribed spacer sequence?

What is the difference between intron sequences and spacer sequences?

Spacer DNA is noncoding DNA between genes. Introns are noncoding DNA within genes. Introns get transcribed and then removed post-transcriptionally.

What is ITS4?

ITS4 and ITS5 are standard primers for amplifying the ITS region; primers 811-884 were obtained through UBC Biotechnology Laboratory (microsatellite primer set 9). Source publication. The use of molecular techniques to resolve relationships among traditional weaving cultivars of Phormium. Article.

Is ITS1 a forward primer?

The worst-performing primer was the published forward primer ITS1-F (L), which resulted in identification of 10 out of 13 cultures, while primers ITS1 (L) and ITS5 (L) both correctly identified 11 of the 13 cultures.

Why is rbcL gene used?

What is the function of rbcL?

The function of the rbcL gene is to code for the large subunit of ribulose 1, 5 bisphosphate carboxylase/oxygenase (RUBISCO or RuBPCase). The sequence data of the rbcL gene are widely used in the reconstruction of phylogenies throughout the seed plants.

Why is mtDNA circular?

Nucleoids in mitochondria do need to be circular in order for the machinery that copies their DNA to work. Transcription in mitochondria is directly coupled to replication, and also requires circularized nucleoids.

What is the difference between mitochondrial DNA and nuclear DNA?

Nuclear DNA and mitochondrial DNA differ in many ways, starting with location and structure. Nuclear DNA is located within the nucleus of eukaryote cells and usually has two copies per cell while mitochondrial DNA is located in the mitochondria and contains 100-1,000 copies per cell.

Why is mitochondrial better than nuclear DNA?

The most important advantages of using mtDNA are its intrinsic ability to resist degradation and its high copy number inside the cell as compared to nuclear DNA (nuDNA). Each cell contains around 1000 mitochondria, and there are 2–10 copies of the mtDNA per mitochondrion [98].

Why is mitochondrial DNA only from mother?

In sexual reproduction, during the course of fertilization event only nuclear DNA is transferred to the egg cell while rest all other things destroyed. And this is the reason which proves that Mitochondrial DNA inherited from mother only.

What is nuclear ribosomal internal transcribed spacer?