title: The ATPase core of a clathrin uncoating protein.
abstract: Chymotryptic digestion of bovine brain uncoating ATPase produced a 60-kDa fragment that was subsequently proteolyzed to 44 kDa. Loss of clathrin cage uncoating activity paralleled the conversion of the intact 70-kDa enzyme to the 60-kDa fragment, while clathrin binding activity was lost as the 60-kDa fragment was degraded to 44 kDa. This 44-kDa fragment has been purified to homogeneity and characterized as a clathrin-independent ATPase. The 44-kDa ATPase domain has been localized within the intact enzyme by the use of amino-terminal specific antibodies. This localization relates to the conserved nature of the 70-kDa heat shock protein family, of which bovine brain uncoating ATPase is a constitutively expressed member.
mesh_terms: D000251:Adenosine Triphosphatases / Q000302:isolation & purification / Q000378:metabolism*; D000595:Amino Acid Sequence; D000818:Animals; D001426:Bacterial Proteins; D001921:Brain / Q000201:enzymology*; D002352:Carrier Proteins / Q000302:isolation & purification / Q000378:metabolism*; D002417:Cattle; D002918:Chymotrypsin / Q000378:metabolism; D002966:Clathrin / Q000302:isolation & purification / Q000378:metabolism; D050883:HSC70 Heat-Shock Proteins; D018840:HSP70 Heat-Shock Proteins; D051381:Rats
chemical_list: D001426:Bacterial Proteins; D002352:Carrier Proteins; D002966:Clathrin; D050883:HSC70 Heat-Shock Proteins; D018840:HSP70 Heat-Shock Proteins; C494373:Hspa8 protein, rat; D002918:Chymotrypsin; D000251:Adenosine Triphosphatases