Gene Information
Gene NameITM2B
OrganismHomo sapiens (Human)
Gene Length266
Protein NamesIntegral membrane protein 2B (Immature BRI2) (imBRI2) (Protein E25B) (Transmembrane protein BRI) (Bri) [Cleaved into: BRI2, membrane form (Mature BRI2) (mBRI2); BRI2 intracellular domain (BRI2 ICD); BRI2C, soluble form; Bri23 peptide (Bri2-23) (ABri23) (C-terminal peptide) (P23 peptide)]
Target NameNA
Target TypeNA
Gene Age645 ( ENSG00000136156 )
Evolutionary StageEumetazoa
AlphaFoldDBQ9Y287
Gene CardITM2B
Uniprot IDQ9Y287
PfamPF04089
In ASDno
Allosteric Predictionno (-0.504009428)
Ortholog in AnimalsAlpaca_ ITM2B ( ortholog_one2one )
Dog_ ITM2B ( ortholog_one2one )
GuineaPig_ ITM2B ( ortholog_one2one )
Macaque_ ITM2B ( ortholog_one2one )
Mouse_ Itm2b ( ortholog_one2one )
Pig_ ITM2B ( ortholog_one2one )
Rat_ Itm2b ( ortholog_one2one )
Rabbit_ ITM2B ( ortholog_one2one )
OhnologsITM2A, ITM2C
ParalogsITM2A, ITM2C
TissueNA
Tissue SpecificityUbiquitous. Expressed in brain.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs11556905  rs606231283 
Subcellular location [CC][Integral membrane protein 2B]: Golgi apparatus membrane {ECO:0000269|PubMed:14656991, ECO:0000269|PubMed:19114711};
Single-pass type II membrane protein {ECO:0000269|PubMed:10526337}. Note=Immature BRI2 (imBRI2) is cleaved by furin in the Golgi into mBRI2 and a Bri23 peptide. mBRI2 is transported to the plasma membrane and Bri23 peptide is secreted.;
[BRI2, membrane form]: Cell membrane {ECO:0000269|PubMed:18440095, ECO:0000269|PubMed:19748705, ECO:0000269|PubMed:21752865};
Single-pass type II membrane protein {ECO:0000269|PubMed:10526337}. Endosome membrane {ECO:0000269|PubMed:19748705};
Single-pass type II membrane protein {ECO:0000269|PubMed:10526337}. Note=Mature BRI2 (mBRI2) needs to be transported from the endoplasmic reticulum compartment to the cell membrane in order to be able to inhibit APP processing. {ECO:0000269|PubMed:19748705}.;
[Bri23 peptide]: Secreted {ECO:0000269|PubMed:10526337, ECO:0000269|PubMed:14656991, ECO:0000269|PubMed:18524908}. Note=Detected in the cerebral spinal fluid (CSF). {ECO:0000269|PubMed:18524908}.;
[BRI2C, soluble form]: Secreted {ECO:0000269|PubMed:17965014}.
Mouse PG classificationLPG
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