Question

СРОЧНО ДАЮ 30Б Як зміниться структура білка якщо у фрагменті ДНК що кодує його ТАТ ТЦТ ТТТ ТГТ ГГА ЦГА випадає на 11 нуклеотид

Answer 1

ДНК: ТАТ ТЦТ ТТТ ТГТ ГГА ЦГА

2 ланцюг ДНК: АТА АГА ААА АЦА ЦЦТ ГЦТ

іРНК: УАУ УЦУ УУУ УГУ ГГА ЦГА

Білок: тир-сер-фен-цис-глі-арг

Якщо випаде 11 нуклеотид:

ДНК: ТАТ ТЦТ ТТТ ТТГ ГАЦ ГА

2 ланцюг ДНК: АТА АГА ААА ААЦ ЦТГ ЦТ

іРНК: УАУ УЦУ УУУ УУГ ГАЦ ГА

Білок: тир-сер-фен-лей-асп-

Answer 2

Changes in Protein Structure due to DNA Fragment Alteration

When a DNA fragment that encodes a protein undergoes alteration, such as the deletion of a nucleotide sequence, it can lead to changes in the structure of the resulting protein. In this case, the given DNA fragment is "TAT TCT TTT TGT GGA CGA," and the 11th nucleotide (counting from the beginning) is missing. Let's explore how this alteration may affect the protein structure.

To determine the impact of the missing nucleotide on the protein structure, we need to understand the genetic code and how it translates into amino acids. The genetic code is a set of rules that determines how nucleotide triplets, called codons, are translated into specific amino acids during protein synthesis.

In the given DNA fragment, the codon affected by the missing nucleotide is "CGA." This codon normally codes for the amino acid arginine. However, without the 11th nucleotide, the codon becomes "CG," which is not a valid codon in the genetic code. As a result, the translation process may be disrupted, leading to potential changes in the protein structure.

The specific impact of this alteration on the protein structure will depend on various factors, including the position of the affected codon within the protein sequence and the role of the amino acid it codes for. Alterations in the protein structure can have different consequences, ranging from minor changes to complete loss of function.

It's important to note that predicting the exact structural changes caused by a specific alteration in a protein is a complex task that often requires experimental analysis or computational modeling. Without further information about the protein in question and the specific role of the affected codon, it is challenging to provide a detailed prediction of the structural changes that would occur.

In summary, if a DNA fragment encoding a protein undergoes alteration, such as the deletion of a nucleotide sequence, it can lead to changes in the protein structure. In the given scenario, the missing nucleotide affects the codon "CGA," which normally codes for the amino acid arginine. However, without the 11th nucleotide, the codon becomes "CG," which is not a valid codon. The specific impact on the protein structure will depend on various factors and may require further analysis to determine.