[C.elegansII] pk18 : deletion derived from pk30tci, increased sensitivity to colchicine and to chloroquine; gross phenotype WT. Cloned: encodes 1254 aa P-glycoprotein, 61-65% identical to mammalian P-glycoproteins. Transcripts present throughout development; pgp-1:lacZ expressed in intestine, throughout development. Tagged PGP-3 detected in apical membranes of gut and of excretory cell. [Broeks et al. 1995; NL]
pgp-3 encodes a transmembrane protein that is a member of the P-glycoprotein subclass of the ATP-binding cassette (ABC) transporter superfamily; with PGP-1, PGP-3 is required for defense against the pathogenic Pseudomonas aeruginosa strain PA14, and may facilitate ATP-dependent efflux of the toxic phenazine compounds produced by the bacteria; PGP-3 is also required for resistance to colchicine and chloroquine; PGP-3 is expressed in the apical membranes of the excretory cell and the intestinal cells.
Predicted to enable ATPase-coupled transmembrane transporter activity and efflux transmembrane transporter activity. Involved in defense response to Gram-negative bacterium; innate immune response; and stress response to cadmium ion. Located in apical plasma membrane. Expressed in excretory canal; excretory cell; intestinal cell; intestine; and pharynx. Human ortholog(s) of this gene implicated in several diseases, including autoimmune disease (multiple); carcinoma (multiple); and intrahepatic cholestasis (multiple). Is an ortholog of several human genes including ABCB1 (ATP binding cassette subfamily B member 1); ABCB11 (ATP binding cassette subfamily B member 11); and ABCB4 (ATP binding cassette subfamily B member 4).
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.