| UniProt functional annotation for Q9JIL4 | |||
| UniProt code: Q9JIL4. |
| Organism: | Mus musculus (Mouse). | |
| Taxonomy: | Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Mus; Mus. | |
| Function: | A scaffold protein that connects plasma membrane proteins and regulatory components, regulating their surface expression in epithelial cells apical domains. May be involved in the coordination of a diverse range of regulatory processes for ion transport and second messenger cascades. In complex with SLC9A3R1, may cluster proteins that are functionally dependent in a mutual fashion and modulate the trafficking and the activity of the associated membrane proteins. May play a role in the cellular mechanisms associated with multidrug resistance through its interaction with ABCC2 and PDZK1IP1. May potentiate the CFTR chloride channel activity (By similarity). Required for normal cell-surface expression of SCARB1. Plays a role in maintaining normal plasma cholesterol levels via its effects on SCARB1. Plays a role in the normal localization and function of the chloride- anion exchanger SLC26A6 to the plasma membrane in the brush border of the proximal tubule of the kidney. May be involved in the regulation of proximal tubular Na(+)-dependent inorganic phosphate cotransport therefore playing an important role in tubule function. {ECO:0000250, ECO:0000269|PubMed:11051556, ECO:0000269|PubMed:12556478, ECO:0000269|PubMed:14531806, ECO:0000269|PubMed:15523054, ECO:0000269|PubMed:16141316, ECO:0000269|PubMed:20739281, ECO:0000269|PubMed:21602281}. | |
| Subunit: | Interacts with PDZK1IP1 and ABCC2. Binds to the C-terminal region of SLC26A3. Interacts (via C-terminal PDZ domain) with SLC26A6 (via C-terminal domain). Interacts (via C-terminal PDZ domain) with SLC9A3 (via C-terminal domain) (By similarity). Component of a complex, composed of PDZK1, SYNGAP1, KLHL17 and NMDA receptors. Interacts (via PDZ1 domain) directly with KLHL17; the interaction is important for integrity of actin cytoskeleton structures in neurons (By similarity). Forms a heterodimeric complex with SLC9A3R1. Interacts with AKAP2, BCR, CFTR, SLCO1A1, SLC22A12, SLC22A4, SLC22A5, SLC26A6, SLC9A3R2 and SLC17A1. Interacts (via the first PDZ domain) with PTGIR (via non- isoprenylated C-terminus). Interacts (via PDZ domains 1 and 3) with SCARB1 (C-terminal domain). {ECO:0000250, ECO:0000269|PubMed:11051556, ECO:0000269|PubMed:11099500, ECO:0000269|PubMed:14531806, ECO:0000269|PubMed:15523054, ECO:0000269|PubMed:20739281, ECO:0000269|PubMed:21602281, ECO:0000269|PubMed:23457445}. | |
| Subcellular location: | Membrane; Peripheral membrane protein {ECO:0000250|UniProtKB:Q9JJ40}. Cell membrane {ECO:0000269|PubMed:11051556, ECO:0000269|PubMed:16141316}. Note=Localized in the brush border membrane of renal proximal tubule cells (PubMed:11051556, PubMed:16141316). Associated with peripheral membranes (By similarity). Localizes to the apical compartment of proximal cells and to sinusoidal liver membranes (By similarity). {ECO:0000250|UniProtKB:Q9JJ40, ECO:0000269|PubMed:11051556, ECO:0000269|PubMed:16141316}. | |
| Tissue specificity: | Expressed in kidney, liver, small intestine. brain, lung, and testis (at protein level). {ECO:0000269|PubMed:11051556, ECO:0000269|PubMed:12556478}. | |
| Domain: | The PDZ 2 and 3 domains seem to be involved in the interaction with SLC26A3. {ECO:0000250}. | |
| Domain: | Interaction with the C-terminus of CFTR could be mediated through independent binding of PDZ 1, 3 and 4 domains. | |
| Domain: | The PDZ 1 and 3 domains seem to be involved in the interaction with SLCO1A1. {ECO:0000250}. | |
| Domain: | The PDZ 1 domain interacts with BCR. {ECO:0000250}. | |
| Domain: | The PDZ 2 and 4 domains do not interact with the C-terminal region of SCARB1. | |
| Miscellaneous: | Disruption of the gene was not associated with abnormal growth and development or redistribution of interacting proteins. However, a modulation of expression of selective ion channels in the kidney, as well as increased serum cholesterol levels were observed. | |
| Similarity: | Belongs to the NHER family. {ECO:0000305}. | |
| Sequence caution: | Sequence=AAL84634.1; Type=Frameshift; Evidence={ECO:0000305}; Sequence=BAC26605.1; Type=Frameshift; Note=The frameshift causes a read through of the stop codon.; Evidence={ECO:0000305}; | |
Annotations taken from UniProtKB at the EBI.