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Gene Review

UPK1A  -  uroplakin 1A

Bos taurus

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High impact information on UPK1A

  • Our results established the existence of two isoforms of bovine uroplakin I: a 27-kD uroplakin Ia and a 28-kD uroplakin Ib [1].
  • Proteolytic digestion of UPIa inserted in vitro into microsomal vesicles suggested that its two main hydrophilic loops are exposed to the luminal space, possibly involved in interacting with the luminal domains of other uroplakins to form the 12-nm protein particles [1].
  • UPIa presents a high level of terminally exposed mannose residues (located on Man(6)GlcNAc(2) to Man(9)GlcNAc(2)) that are capable of specifically interacting with FimH [2].
  • Distinct glycan structures of uroplakins Ia and Ib: structural basis for the selective binding of FimH adhesin to uroplakin Ia [2].

Associations of UPK1A with chemical compounds

  • The larger loop connecting TMD3 and TMD4 of both UPIa and UPIb contains six highly conserved cysteine residues; at least one centrally located cysteine doublet in UPIa is involved in forming intramolecular disulfide bridges [1].


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