What does medical pr mean?

Pr is the abbreviation of protein, which means protein.

Protein is a complex organic compound. It is formed by linear arrangement of amino acid molecules, and the carboxyl and amino groups of adjacent amino acid residues are connected together by forming peptide bonds. The amino acid sequence of protein is encoded by the corresponding gene.

In addition to the 20 "standard" amino acids encoded by the genetic code, in protein, some amino acid residues can be modified after translation to change their chemical structure, thus activating or regulating protein. A variety of protein can work together, often by combining together to form a stable protein complex, and play a specific function.

Extended data

1, composition of protein:

It consists of C (carbon), H (hydrogen), O (oxygen) and N (nitrogen). Protein may also contain P (phosphorus), S (sulfur), Fe (iron), Zn (zinc), Cu (copper), B (boron), Mn (manganese) and I (iodine).

2. Percentage of protein.

About 50% carbon, 7% hydrogen, 23% oxygen, 0/6% nitrogen/kloc, 0-3% sulfur and other trace amounts.

(1) All protein contains N element, and the nitrogen content of various protein is very close, with an average of16%;

(2) protein coefficient: every 1g N in any biological sample means about 100/ 16=6.25g protein, and 6.25 is often called protein constant.

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