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Orphan receptor

In biochemistry, an orphan receptor is a protein that has a similar structure to other identified receptors but whose endogenous ligand has not yet been identified. If a ligand for an orphan receptor is later discovered, the receptor is referred to as an "adopted orphan".[1] Conversely, the term orphan ligand refers to a biological ligand whose cognate receptor has not yet been identified.

  1. ^ Nanduri, Ravikanth; Bhutani, Isha; Somavarapu, Arun Kumar; Mahajan, Sahil; Parkesh, Raman; Gupta, Pawan (2015-01-01). "ONRLDB—manually curated database of experimentally validated ligands for orphan nuclear receptors: insights into new drug discovery". Database. 2015: bav112. doi:10.1093/database/bav112. PMC 4669993. PMID 26637529.

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