- histone H3S28 kinase activity
Catalysis of the reaction: histone H3-serine (position 28) + ATP = histone H3-phosphoserine (position 28) + ADP. This reaction is the addition of a phosphate group to the serine residue at position 28 of histone H3.
- C-22 sterol desaturase activity
Catalysis of the formation of the C-22(23) double bond in the sterol side chain. An example reaction: 5,7,24(28)-ergostatrienol + O2 + NADPH = 5,7,22,24(28)-ergostatetraenol + 2 H2O + NADP+.
- interleukin-28 receptor complex
A protein complex that binds interleukin-28 and interleukin-29. It is composed of an alpha and a beta receptor subunit (in human IFNLR1/IL28Ralpha & IL10RB) and either Interleukin-28 (IFNL2 or IFNL3) or Interleukin-29 (IFNL1).
- neuropeptide F receptor activity
Combining with neuropeptide F and transmitting the signal within the cell to initiate a change in cell activity. Neuropeptide F is an arthropod peptide of more than 28 residues (typically 28-45) with a consensus C-terminal RxRFamide (commonly RPRFa, but also RVRFa.
- ghrelin secretion
The regulated release of ghrelin from a cell. Ghrelin is a 28 amino acid hunger-stimulating peptide hormone.