Uroplakin-3

Definition

This entry represents uroplakin-3 and related proteins. Uroplakins (UPs) are a family of proteins that associate with each other to form plaques on the apical surface of the urothelium, the pseudo-stratified epithelium lining the urinary tract from renal pelvis to the bladder outlet [[cite:PMID:27729990], [cite:PMID:17183244]]. UPs are classified into 3 types: UPIa and UPIb, UPII, and UPIIIa and IIIb. UPIs are tetraspanins that have four transmembrane domains separating one large and one small extracellular domain while UPII and UPIIIs are single-pass transmembrane proteins. UPIa and UPIb form specific heterodimers with UPII and UPIII, respectively, which allows them to exit the endoplasmatic rediculum. UPII/UPIa and UPIIIs/UPIb form heterotetramers and six of these tetramers form the 16nm particle, seen in the hexagonal array of the asymmetric unit membrane, which is believed to form a urinary tract barrier PMID:7760330. Uroplakins are also believed to play a role during urinary tract morphogenesis [[cite:PMID:19340092], [cite:PMID:17183244]].

5 human proteins with this domain

Each is a reviewed human protein in the Seroatlas serome and a potential autoantibody target; this domain groups them into one antibody-relevant category. Every entry links to its own record.

Download CSV (5 proteins: gene, accession, name)

• PMS2P11
• UPK3A
• UPK3B
• UPK3BL1
• UPK3BL2