Causes of different types of amino acids

Each amino acid can have an R group attached to it, and there are many types of R groups, so the types of amino acids are also different.

1) Color and color: various common amino acids are easy to become colorless crystals, and the crystal shape varies due to the different structures of amino acids.

2) Melting point: The melting point of amino acid crystallization is higher, generally 200 300, and many amino acids will be decomposed into amines and CO2 when they reach or approach the melting point.

3) Solubility.

Most amino acids are soluble in water. The solubility of different amino acids in water varies.

1. Amino acids are amphoteric electrolytes, and the degree of dissociation depends on the pH of the solution.

In a solution of a certain pH, amino acids dissociate into cations and anions with equal tendency and degree, becoming facultative ions and electrically neutral. The pH of the solution at this time.

This is called the isoelectric point of this amino acid.

2. Glycine removal.

In addition, other amino acids have asymmetric c atoms, and their optical rotation can be determined by polarimeter.

Various amino acids.

The difference between is that the R basis is different. Each amino acid contains at least 1 amino group (-NH2) and a carboxyl group (-COOH) and is attached to the same C atom, and the difference between the various amino acids is the difference in the R group (-R), so that there are about 20 amino acids that make up proteins.

Amino acids, are organic compounds containing basic amino and acidic carboxyl groups, and the chemical formula is RCHNH2Cooh. A compound formed after the hydrogen atom on the carbon atom of carboxylic acid is replaced by an amino group. The amino acid molecule contains two functional groups, amino and carboxyl.

Similar to hydroxy acids, amino acids can be divided into -,w-amino acids according to the different positions of amino groups attached to the carbon chain, but the amino acids obtained by protein hydrolysis are all -amino acids, and there are only 22 kinds, including glycine.

Alanine, valine, leucine, isoleucine, methionine (methionine), proline, tryptophan, serine, tyrosine, cysteine, phenylalanine, asparagine, glutamine, threonine, aspartic acid.

Glutamic acid, lysine.

Arginine, histidine, selenocysteine, and pyrrole lysine (found only in a few bacteria), which are the basic units that make up proteins. Amino acids are the basic substances that make up proteins needed for animal nutrition.

There are 20 varieties of amino acids, including lysine, threonine, leucine, isoleucine, valine, methionine, tryptophan, phenylalanine 8 kinds of amino acids, the human body cannot manufacture itself, we call it essential amino acids. Amino acids are one of the many bioactive macromolecules that build biological organisms, and are the basic materials for building cells and repairing tissues. Amino acids are used by the body to make antibody proteins to fight infections from bacteria and viruses, hemoglobin to transport oxygen, and enzymes and hormones to maintain and regulate metabolism.

r-based decision.

The basic unit of protein is amino acids, and the general formula of amino acid structure is NH - C-COOH, and the difference between various amino acids is the difference in R groups.

The R group refers to the group that is different from the fourth thing (group) attached to the carbon atom of the amino acid.

The difference in the type of amino acid is determined by the R group. Amino acids are organic compounds containing basic amino groups and acidic carboxyl groups, and the R group refers to the fourth group attached to the carbon atom of an amino acid. The amino acid molecule contains two functional groups, amino and carboxyl.

Amino acid molecules contain both acidic and basic groups, so amino acids can react with strong acids. It can also react with strong bases to form stable salts, which have the characteristics of amphoteric compounds. Various amino acids have different isoelectric points due to their differences in composition and structure.

Due to the difference in the relative molecular weight and PI of various amino acids, in the buffer solution of the same pH, different amino acids not only have different charge status, but also tend to have different swimming directions and rates in the electric field.

Glutamic acid is the world's first industrially produced amino acid single product. Since then, scientists have used proteolysis to hydrolyze raw materials such as feathers, human hair, and pig blood into amino acids, but most of these amino acids are "DL mixed amino acids", which are very difficult to split. The establishment of the industrial microbial fermentation method in the 60s allowed the amino acid industry to take off.

Since then, many commonly used amino acid varieties (including: glutamic acid, lysine, threonine, phenylalanine, etc.) can be produced by microbial fermentation, so that their production has increased greatly and the cost has been greatly reduced.

The type of amino acid varies depending on the R group. The R group refers to the group that is different from the fourth thing (group) connected by the exciter on the amino acid carbon atom. The basic unit of composition is amino acids, and the general formula of amino acid structure is nh-c-cooh, and the difference between various amino acids is the difference in the R group of Mingwei potato.

Amino acids are compounds after the hydrogen atom on the carbon atom of carboxylic acid is replaced by an amino group, and the amino acid molecule contains two functional groups, amino group and carboxyl group. Similar to hydroxy acids, amino acids can be divided into -,w-amino acids according to the different positions of amino groups attached to the carbon chain, but the amino acids obtained by protein hydrolysis are all -amino acids, and there are only more than 20 kinds, they are the basic units of proteins.