Question

Правая цепь ДНК имеет следующую последовательность нуклеотидов: ЦТАТАГТААЦАА. Определите структуру фрагмента белка, синтезированного по левой цепи ДНК.

Answer 1

По принципу комплементарности)
ГАТАТЦАТТГТТ

Answer 2

Просто по РНК : ГАУАУЦАУУГУУ

Answer 3

Structure of the Protein Fragment Synthesized from the Left DNA Strand

The right DNA strand has the following nucleotide sequence: ЦТАТАГТААЦАА. To determine the structure of the protein fragment synthesized from the left DNA strand, we need to first transcribe the DNA sequence into RNA and then translate the RNA sequence into a protein sequence.

1. Transcription: - Transcription is the process by which the DNA sequence is copied into RNA. During transcription, the DNA sequence is used as a template to synthesize a complementary RNA molecule. - In RNA, the nucleotide Т is replaced by У, and the nucleotide Ц is replaced by Г. - Therefore, the transcription of the right DNA strand would result in the following RNA sequence: ГАУАУКАУУГУУ.

2. Translation: - Translation is the process by which the RNA sequence is converted into a protein sequence. It occurs in the ribosomes, where transfer RNA (tRNA) molecules bring amino acids to the ribosome based on the codons in the mRNA sequence. - Each codon in the mRNA sequence corresponds to a specific amino acid or a stop signal. - To determine the protein sequence, we need to use the genetic code, which is a set of rules that determines the correspondence between codons and amino acids. - Here is the translation of the RNA sequence ГАУАУКАУУГУУ using the genetic code:

- ГАУ → Aspartic Acid (Asp) - АУК → Isoleucine (Ile) - АУУ → Isoleucine (Ile) - ГУУ → Valine (Val)

- Therefore, the protein fragment synthesized from the left DNA strand would have the following amino acid sequence: Asp-Ile-Ile-Val.

Please note that the translation process assumes that the reading frame of the RNA sequence starts at the first nucleotide. If there are any frameshift mutations or other modifications to the DNA sequence, it could affect the resulting protein sequence.