Biochemistry

form a complex with cytoplasmic receptors. This complex acquires the ability to penetrate into the nucleus, which stimulates the chromatin's matrix activity. Female sex hormones (mainly estradiol, estrone, equiline, equilin, progesterone) are synthesized in the ovaries, whose functions are controlled by the pituitary gonadotropic hormones. The main biological effect of female sex hormones is to ensure the reproductive function of the body. They cause the development of secondary sexual characteristics and create optimal conditions that provide the possibility of fertilization of the egg after its maturation. Hormones adrenal medulla - epinephrine and norepinephrine are similar in structure to the amino acid tyrosine, which are distinguished by the presence of additional governmental OH groups in the ring and at the P-carbon atom of the side chain, and the lack of a carboxyl group. CHOH H 3 C — NH — CH 2 Adrenalin NH — CH 2 Norepinephrine Under the conditions of the experiment, it was found that tyrosine is a precursor to the hormones of the adrenal medulla. In the process of exchange, undergoing hydroxylation, decarboxylation and methylation with the participation of the corresponding enzymes, it turns into adrenaline and norepinephrine . 289