What do the 5 and 3 related to DNA mean?

5'and 3'It is the two ends of the DNA molecule, and the classification is based on the position of the C atom in the five-carbon sugar attached to the deoxynucleotide. I can't say it here, but you can look for some information and look at the 5 of the DNA molecule'The end is a free phosphoric acid, while 3'is a free hydroxyl group.

Sorry, that's all I can explain.

What is DNA3'End and 5'The end is as follows:

DNA is made up of basic units: nucleotides, which are made up of a molecule of pentose sugar, a molecule of phosphate groups, and a molecule of nitrogenous bases. The way in which the nucleotides are ligated is the phosphate group of the above one nucleotide (in 5'and the hydroxyl group of the next nucleotide (at the 3' position) to form a phosphodiester bond.

In this case, there will definitely be an extra phosphate group or hydroxyl group at each end of the nucleotide chain. Among them, the end that is attached to the phosphate group is called the 5' end, and the end that is attached to the hydroxyl group is called the 3' end.

Summary. dna 5'and 3'Meaning: Hello, dear. Here you can find out that the structure of DNA is composed of phosphate groups, five-carbon sugars and bases.

According to the chemical order of carbon atoms, starting from the first carbon atom on the right side of the five-carbon sugar close to the oxygen atom, we can find that the carbon atom can be connected from one to five.

In connection with the phosphoric acid group, the No. 1 carbon atom is connected to the corresponding ammonia-containing base to form a complete nucleotide unit.

One by one, the deoxynucleotides are connected in turn, and only one phosphate group is attached to the No. 5 carbon of the first nucleotide, so this end is called the 5 ends of DNA: on the No. 3 carbon at the tail of the long chain of nucleotides, only one hydroxyl group is attached, so this end is called the 3 of DNA'End.

From position 3 of the first nucleotide to the phosphate group of the next nucleotide, two ester bonds are formed. The individual nucleotides are linked by ester bonds to form a long chain of deoxynucleotides, deoxynucleosides.

In the long chain of acids, there is no nucleotide attached to the next nucleotide at position 3, and the nucleotide at the first position is not attached to other nucleotides at position 5.

dna 5'and 3'What do you mean.

dna 5'and 3'Meaning: Hello, dear. Here you can find out that the structure of DNA is composed of phosphate groups, five-carbon sugars and bases.

According to the chemical order of carbon atoms, starting from the first carbon atom on the right side of the five-carbon sugar close to the oxygen atom, the number is marked from one to five, and we can find that the phosphoric acid group can be connected to the No. 5 carbon atom, and the No. 1 carbon atom can be connected to the corresponding ammonia-containing base to form a complete nucleotide unit. One by one, the deoxynucleotides are connected in turn, and only one phosphate group is attached to the No. 5 carbon of the first nucleotide, so this end is called the 5 ends of DNA: on the No. 3 carbon at the tail of the long chain of nucleotides, only one hydroxyl group is attached, so this end is called the 3 of DNA'End.

From position 3 of the first nucleotide to the phosphate group of the next nucleotide, two ester bonds are formed. The individual nucleotides are connected by ester bonds to form a long chain of deoxynucleotides, and there is no connection to the next nucleotide at the 3rd position of the unhoused oak nucleotide in the long chain of deoxynucleotides, and there is no connection to other nucleotides at the first nucleotide 5liang barrage.

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