Dna polymerase reads the template strand
Coding strand. When referring to DNA transcription, the coding strand is the DNA strand whose base sequence corresponds to the base sequence of the RNA transcript produced although with thymine replaced by uracil.
It is this strand which contains codons, while the non- coding strand contains anticodons. During the process of DNA replication the double stranded form of the DNA is split into two single stranded molecules.
During transcription , RNA Pol II binds to the non- coding strand , reads the anti-codons, and transcribes their sequence to synthesize an RNA transcript with complementary bases. By convention, the coding strand is the strand used when displaying a DNA sequence.
It is presented in the 5' to 3' direction. In transcription , a region of DNA opens up. One strand , the template strand , serves as a template for synthesis of a complementary RNA transcript. The other strand , the coding strand , is identical to the RNA transcript in sequence, except that it has uracil U bases in place of thymine T bases. The other, and complementary , strand is called the coding strand or sense strand containing codons.
The DNA sense strand is called a " sense " strand not because it will be used to make protein it won't be , but because it has a sequence that corresponds directly to the RNA codon sequence. By this logic, the RNA transcript itself is sometimes described as " sense ". Unlike DNA replication, in which both strands are copied , only one strand is transcribed. The strand that contains the gene is called the sense strand , while the complementary strand is the antisense strand.
Transcription ends when the RNA polymerase enzyme reaches a triplet of bases that is read as a "stop" signal. It synthesizes the RNA strand in the 5' to 3' direction, while reading the template DNA strand in the 3' to 5' direction.
The anticodon thus helps in attaching the specific amino acid to the t-RNA and forms proteins or a polypeptide chain through the assistance of the r-RNA. An enzyme RNA polymerase reads the template strand to synthesis the RNA transcript by recognising the specific sequences.
Hence, RNA polymerase is considered as the one which decides the initiation of the transcription and also in the termination of the translation process. Template and coding strands are the terms generally used to describe the strands which are present in the DNA.
During the process of transcription, one of the two strands in the double stranded DNA serves as a template strand. Where as the other strand which is present in the DNA, other than the template strand is known as coding strand. Template strand is responsible for the sequencing amino acid for synthezing the polypeptide chain. The main difference to be considered between the coding and template strand is that the template strand serves as the template for the transcription where the coding strand contains the exact and the same sequence of the nucleotides in mRNA, expect the nucleotide thymine.
The two strands of the molecule of DNA are separated from one another by exposing the nitrogenous bases. Only one of the strands is actively used as a template in the process of transcription. The strand which is used as a template is also known as template strand or sense strand.
The complementary strand of the DNA is the one which is not used and is called as the nonsense strand or the antisense strand. The RNA sequence which is made up of a direct copy of the nitrogenous bases in the template strand. If Guanine base is a part of sequence on the template DNA strand, then the molecule of RNA has a Cytosine base which is added to its sequence at that point.
Table of Contents Secretion Definition The method of moving molecules manufactured within a cell to the space outside of the cell is referred to as secretion. Usually, these secreted substances are called functional proteins. Table of Contents Photoautotroph Definition The organisms that can make their energy in presence of light and carbon dioxide are known as photoautotrophs. The process of preparing their own food is called photosynthesis.
The word. They are hollow tubes made of the proteins alpha and beta tubulins. Microtubulin form a network of protein filaments extended throughout the. The lagging strand has no been copied into many small strands of RNA, or Okazaki fragments.
ANd finally DNA ligase 'stitches' all the small fragments into one long strand. While translaing the DNA template strand, it creates a complementory mRNA strand and thus the Mrna will read 5'-3' with new bases being added at the 3' end.
The direction of synthesis of the new strand would be in the 5'-3' direction because DNA polymerase can add free nucleotides to only the 3' end of the newly forming strand.
DNA polymerase is an enzyme which synthetizes complementary DNA strand, according to the template strand.
This means that one strand the leading strand can be continuously created, but the other strand the lagging strand runs in the opposite direction.
This means that loops must be created and shorter parts of DNA replicated one at a time. This creates fragments on the lagging strand. DNA is read in the 3' to 5' direction, but a new strand is synthesized from the 5' to 3' direction. So, the strand not copied in the antiparallel double stranded DNA is called the nonsense strand.
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What enzyme catalyzes the elongation of a DNA strand in the 5 to 3 direction?
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