
Size: 200ug. Other sizes are also available. Please Inquire.
In Stock: No
Lead time: 22-32 working days
Research Topic: Others
Uniprot ID: P21440
Gene Names: Abcb4
Organism: Mus musculus (Mouse)
AA Sequence: DAFANARGAAYVIFDIIDNNPKIDSFSERGHKPDNIKGNLEFSDVHFSYPSRANIKILKGLNLKVKSGQTVALVGNSGCGKSTTVQLLQRLYDPTEGKISIDGQDIRNFNVRCLREIIGVVSQEPVLFSTTIAENIRYGRGNVTMDEIEKAVKEANAYDFIMKLPQKFDTLVGDRGAQLSGGQKQRIAIARALVRNPKILLLDEATSALDTESEAEVQAALDKAREGRTTIVIAHRLSTIRNADVIAGFEDGVIVEQGSHSELMKKEGIYFRLVNMQTAGSQILSEEFEVELSDEKAAGDVAPNGWKARIFRNSTKKSLKSPHQNRLDEETNELDANVPPVSFLKVLKLNKTEWPYF
Expression Region: 352-708aa
Sequence Info: Cytoplasmic Domain
Source: Yeast
Tag Info: N-terminal 6xHis-tagged
MW: 41.6 kDa
Alternative Name(s): ATP-binding cassette sub-family B member 4Imported Multidrug resistance protein 21 Publication Multidrug resistance protein 3By similarity (EC:3.6.3.44) P-glycoprotein 2By similarity P-glycoprotein 3By similarity
Relevance: Energy-dependent phospholipid efflux translocator that acts as a positive regulator of biliary lipid secretion. Functions as a floppase that translocates specifically phosphatidylcholine (PC) from the inner to the outer leaflet of the canalicular membrane bilayer into the canaliculi between hepatocytes. Translocation of PC makes the biliary phospholipids available for extraction into the canaliculi lumen by bile salt mixed micelles and therefore protects the biliary tree from the detergent activity of bile salts (PubMed:8106172, PubMed:7912658, PubMed:7592705, PubMed:7814632, PubMed:8725158, PubMed:9366571). Plays a role in the recruitment of phosphatidylcholine (PC), phosphatidylethanolamine (PE) and sphingomyelin (SM) molecules to nonraft membranes and to further enrichment of SM and cholesterol in raft membranes in hepatocytes (By similarity). Required for proper phospholipid bile formation (PubMed:8106172). Indirectly involved in cholesterol efflux activity from hepatocytes into the canalicular lumen in the presence of bile salts in an ATP-dependent manner (PubMed:7814632, PubMed:8725158). May promote biliary phospholipid secretion as canaliculi-containing vesicles from the canalicular plasma membrane (PubMed:9366571). In cooperation with ATP8B1, functions to protect hepatocytes from the deleterious detergent activity of bile salts (PubMed:21820390). Does not confer multidrug resistance (PubMed:1990275)
Reference: "Bile salt-stimulated phospholipid efflux mediated by ABCB4 localized in nonraft membranes."Morita S.Y., Tsuda T., Horikami M., Teraoka R., Kitagawa S., Terada T.J. Lipid Res. 54:1221-1230(2013)
Purity: Greater than 90% as determined by SDS-PAGE.
Storage Buffer: Tris-based buffer,50% glycerol
Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20℃/-80℃. The shelf life of lyophilized form is 12 months at -20℃/-80℃.
Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.