Vitellogenins

**Definition:** Phospholipoglycoproteins produced in the fat body of egg-laying animals such as non-mammalian VERTEBRATES; ARTHROPODS; and others. Vitellogenins are secreted into the HEMOLYMPH, and taken into the OOCYTES by receptor-mediated ENDOCYTOSIS to form the major yolk proteins, VITELLINS. Vitellogenin production is under the regulation of steroid hormones, such as ESTRADIOL and JUVENILE HORMONES in insects.

**Tree numbers:** - D12.776.093.500.925 - D12.776.290.812.500 - D12.776.744.925

**Synonyms:** - Vitellogenin