Functional Information from GO Data
| Chain | GOid | namespace | contents | 
| A | 0004930 | molecular_function | G protein-coupled receptor activity | 
| A | 0007186 | biological_process | G protein-coupled receptor signaling pathway | 
| A | 0007631 | biological_process | feeding behavior | 
| A | 0016020 | cellular_component | membrane | 
| A | 0016499 | molecular_function | orexin receptor activity | 
Functional Information from PDB Data
| site_id | AC1 | 
| Number of Residues | 11 | 
| Details | binding site for residue 7MA A 2001 | 
| Chain | Residue | 
| A | THR111 | 
| A | HIS350 | 
| A | TYR354 | 
| A | PRO131 | 
| A | GLN134 | 
| A | GLN187 | 
| A | GLU212 | 
| A | PHE227 | 
| A | ILE320 | 
| A | SER321 | 
| A | ASN324 | 
| site_id | AC2 | 
| Number of Residues | 1 | 
| Details | binding site for residue OLA A 2002 | 
| site_id | AC3 | 
| Number of Residues | 6 | 
| Details | binding site for residue OLA A 2003 | 
| Chain | Residue | 
| A | GLU54 | 
| A | TRP55 | 
| A | ILE62 | 
| A | LEU150 | 
| A | TYR154 | 
| A | LEU238 | 
| site_id | AC4 | 
| Number of Residues | 1 | 
| Details | binding site for residue OLA A 2004 | 
| site_id | AC5 | 
| Number of Residues | 6 | 
| Details | binding site for residue OLA A 2005 | 
| Chain | Residue | 
| A | TYR53 | 
| A | VAL56 | 
| A | LEU57 | 
| A | VAL179 | 
| A | ALA344 | 
| A | TRP351 | 
| site_id | AC6 | 
| Number of Residues | 8 | 
| Details | binding site for residue 1PE A 2006 | 
| Chain | Residue | 
| A | LEU43 | 
| A | TYR47 | 
| A | THR204 | 
| A | THR205 | 
| A | SER1022 | 
| A | LYS1026 | 
| A | PHE1104 | 
| A | GLU1107 | 
| site_id | AC7 | 
| Number of Residues | 4 | 
| Details | binding site for residue 1PE A 2007 | 
| Chain | Residue | 
| A | CYS210 | 
| A | LYS327 | 
| A | PHE333 | 
| A | PHE346 | 
Functional Information from PROSITE/UniProt
| site_id | PS00237 | 
| Number of Residues | 17 | 
| Details | G_PROTEIN_RECEP_F1_1 G-protein coupled receptors family 1 signature. VSVlTLSCIALDRWYaI | 
| Chain | Residue | Details | 
| A | VAL140-ILE156 |  | 
Functional Information from SwissProt/UniProt
| site_id | SWS_FT_FI1 | 
| Number of Residues | 20 | 
| Details | Transmembrane: {"description":"Helical; Name=1","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI2 | 
| Number of Residues | 31 | 
| Details | Topological domain: {"description":"Cytoplasmic","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI3 | 
| Number of Residues | 21 | 
| Details | Transmembrane: {"description":"Helical; Name=2","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI4 | 
| Number of Residues | 61 | 
| Details | Topological domain: {"description":"Extracellular","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI5 | 
| Number of Residues | 22 | 
| Details | Transmembrane: {"description":"Helical; Name=3","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI6 | 
| Number of Residues | 20 | 
| Details | Transmembrane: {"description":"Helical; Name=4","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI7 | 
| Number of Residues | 20 | 
| Details | Transmembrane: {"description":"Helical; Name=5","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI8 | 
| Number of Residues | 21 | 
| Details | Transmembrane: {"description":"Helical; Name=6","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI9 | 
| Number of Residues | 23 | 
| Details | Transmembrane: {"description":"Helical; Name=7","evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI10 | 
| Number of Residues | 1 | 
| Details | Binding site: {"evidences":[{"source":"PubMed","id":"25533960","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"4S0V","evidenceCode":"ECO:0007744"}]} | 
| site_id | SWS_FT_FI11 | 
| Number of Residues | 1 | 
| Details | Site: {"description":"Important for responses to orexin","evidences":[{"source":"PubMed","id":"26950369","evidenceCode":"ECO:0000269"}]} | 
| site_id | SWS_FT_FI12 | 
| Number of Residues | 1 | 
| Details | Glycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]} |