Gene Information
Gene NameCCKBR
OrganismHomo sapiens (Human)
Gene Length447
Protein NamesGastrin/cholecystokinin type B receptor (CCK-B receptor) (CCK-BR) (Cholecystokinin-2 receptor) (CCK2-R)
Target Namegastrin/cholecystokinin type b receptor
Target TypeSuccessful target
Gene Age680 ( ENSG00000110148 )
Evolutionary StageEumetazoa
AlphaFoldDBP32239
Gene CardCCKBR
Uniprot IDP32239
PfamPF00001
In ASDyes
Allosteric Predictionyes (1.011223544)
Ortholog in AnimalsDog_ CCKBR ( ortholog_one2one )
GuineaPig_ CCKBR ( ortholog_one2one )
Macaque_ CCKBR ( ortholog_one2one )
Mouse_ Cckbr ( ortholog_one2one )
Rat_ Cckbr ( ortholog_one2one )
Rabbit_ CCKBR ( ortholog_one2one )
OhnologsCCKAR
ParalogsCCKAR, NPFFR1, HCRTR2, HCRTR1, NPFFR2, OXTR, AVPR2, AVPR1B, AVPR1A, GNRHR, GALR3, GPR22, GPR150, FFAR4, GALR1, QRFPR
Tissuebrain, pancreas, stomach, cerebellum, cerebral.cortex
Tissue SpecificityIsoform 1 is expressed in brain, pancreas, stomach, the colon cancer cell line LoVo and the T-lymphoblastoma Jurkat, but not in heart, placenta, liver, lung, skeletal muscle, kidney or the stomach cancer cell line AGS. Expressed at high levels in the small cell lung cancer cell line NCI-H510, at lower levels in NCI-H345, NCI-H69 and GLC-28 cell lines, not expressed in GLC-19 cell line. Within the stomach, expressed at high levels in the mucosa of the gastric fundus and at low levels in the antrum and duodenum. Isoform 2 is present in pancreatic cancer cells and colorectal cancer cells, but not in normal pancreas or colonic mucosa. Isoform 3 is expressed in brain, pancreas, stomach, the stomach cancer cell line AGS and the colon cancer cell line LoVo. {ECO:0000269|PubMed:10913157, ECO:0000269|PubMed:12429993, ECO:0000269|PubMed:7848914, ECO:0000269|PubMed:7887934, ECO:0000269|PubMed:8185170, ECO:0000269|PubMed:8349705}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB 1L4T  (NMR  7F8V  (EM  3.30A  7F8W  (EM  3.10A  7XOW  (EM  3.10A  7XOX  (EM  3.10A 
DBSNP rs1805000  rs35816985  rs1805002  rs1805004  rs1805001 
Subcellular location [CC]Cell membrane;
Multi-pass membrane protein.
Mouse PG classificationNA
click here to return to the previous page