Alternative titles; symbols
HGNC Approved Gene Symbol: SLC4A1AP
Cytogenetic location: 2p23.3 Genomic coordinates (GRCh38) : 2:27,663,889-27,694,969 (from NCBI)
Chen et al. (1998) cloned a mouse cDNA encoding a protein, termed kanadaptin (kidney anion exchanger adaptor protein), that binds to the cytoplasmic domain of the kidney isoform of erythroid band 3 (AE1; 109270) but not to the erythroid isoform or to ankyrin. Kanadaptin contains 507 amino acids and is proline-rich. Northern blot analysis revealed that in mouse the gene is widely expressed at a low level. Immunolocalization demonstrated that the protein is cytosolic, with a higher concentration in the region of plasma membranes, especially apical membranes.
Chen et al. (1998) found that the expression of kanadaptin in mouse kidney is restricted to the collecting tubule. In the intercalated cells of that segment, it colocalizes with kidney AE1 (kAE1) only when the latter is in intracellular vesicles and not when it has been delivered to the basolateral membrane. Chen et al. (1998) suggested that kanadaptin may be part of the machinery that targets kAE1 to the basolateral membrane.
Scott (2000) mapped the SLC4A1AP gene to chromosome 2 based on sequence similarity between the SLC4A1AP sequence (GenBank AI424433) and a chromosome 2 clone (GenBank AC074091).
Chen, J., Vijayakumar, S., Li, X., Al-Awqati, Q. Kanadaptin is a protein that interacts with the kidney but not the erythroid form of band 3. J. Biol. Chem. 273: 1038-1043, 1998. [PubMed: 9422766] [Full Text: https://doi.org/10.1074/jbc.273.2.1038]
Scott, A. F. Personal Communication. Baltimore, Md. 11/16/2000.