ENZYME entry: EC 3.6.3.44

Accepted Name
Xenobiotic-transporting ATPase.
Alternative Name(s)
ATP phosphohydrolase (steroid-exporting).
MDR protein.
Multidrug-resistance protein.
P-glycoprotein.
PDR protein.
Pleiotropic-drug-resistance protein.
Steroid-transporting ATPase.
Reaction catalysed
ATP + H(2)O + xenobiotic(In) <=> ADP + phosphate + xenobiotic(Out)
Comment(s)
  • Enzymes of Gram-positive bacteria and eukaryotic cells that export a number of drugs, with unusual specificity, covering various groups of unrelated substances, while ignoring some that are closely related structurally.
  • Several distinct enzymes may be present in a single eukaryotic cell.
  • Many of them transport glutathione conjugates with drugs.
  • Some also show some 'flippase' (EC 3.6.3.1) activity.
  • Formerly EC 3.6.3.45.
Cross-references
PROSITEPDOC00185
BRENDA3.6.3.44
EC2PDB3.6.3.44
ExplorEnz3.6.3.44
PRIAM enzyme-specific profiles3.6.3.44
KEGG Ligand Database for Enzyme Nomenclature3.6.3.44
IUBMB Enzyme Nomenclature3.6.3.44
IntEnz3.6.3.44
MEDLINEFind literature relating to 3.6.3.44
MetaCyc3.6.3.44
UniProtKB/Swiss-Prot
Q9LYS2, AB10C_ARATH;  Q9C8H1, AB11C_ARATH;  Q9C8H0, AB12C_ARATH;  
Q9SKX0, AB13C_ARATH;  Q9LZJ5, AB14C_ARATH;  Q7FB56, AB15C_ARATH;  
Q9C8G9, AB1C_ARATH;  Q42093, AB2C_ARATH;  Q9LK64, AB3C_ARATH;  
Q7DM58, AB4C_ARATH;  Q7GB25, AB5C_ARATH;  Q8VZZ4, AB6C_ARATH;  
Q9LK62, AB7C_ARATH;  Q8LGU1, AB8C_ARATH;  Q9M1C7, AB9C_ARATH;  
Q9P7V2, ABC4_SCHPO;  Q9CHL8, LMRA_LACLA;  P97046, LMRA_LACLM;  
P57551, MDLA_BUCAI;  Q8K985, MDLA_BUCAP;  Q89A97, MDLA_BUCBP;  
P77265, MDLA_ECOLI;  P57552, MDLB_BUCAI;  Q8K984, MDLB_BUCAP;  
Q89A96, MDLB_BUCBP;  P0AAG7, MDLB_ECO57;  P0AAG6, MDLB_ECOL6;  
P0AAG5, MDLB_ECOLI;  P34712, MDR1_CAEEL;  P21448, MDR1_CRIGR;  
P08183, MDR1_HUMAN;  Q06034, MDR1_LEIEN;  P06795, MDR1_MOUSE;  
P43245, MDR1_RAT;  P21449, MDR2_CRIGR;  P21440, MDR2_MOUSE;  
Q08201, MDR2_RAT;  P34713, MDR3_CAEEL;  P23174, MDR3_CRIGR;  
P21439, MDR3_HUMAN;  P21447, MDR3_MOUSE;  Q00449, MDR49_DROME;  
Q00748, MDR65_DROME;  P21441, MDR_LEITA;  P13568, MDR_PLAFF;  

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All UniProtKB/Swiss-Prot entries referenced in this entry, with possibility to download in different formats, align etc.
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.6.3.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.6.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 3.-.-.-