TY - JOUR AB - A dnaB-like protein from P. aeruginosa was purified to near homogeneity using as an assay the immunoprecipitation by E. coli dnaB antiserum in a solid-phase. In the chromatographic characteristics including the affinity to immobilized ATP the dnaB-like protein of P. aeruginosa is similar to the dnaB protein of E. coli with the exception that it does not bind to heparin-Sepharose. The dnaB-like protein has a native molecular weight of about 320,000 as determined by glycerol gradient sedimentation. It consists of several identical subunits of molecular weight of 56,000 as measured in a denaturing SDS gel. Associated with the enzyme is a DNA-dependent ATPase- and helicase activity. The dnaB-like protein is similar to the E. coli dnaB protein with regard to the binding of ATP gamma S and the formation of a ternary complex consisting of the enzyme, ATP gamma S, and phi X174 DNA. However, the enzyme of P. aeruginosa is inactive in a phi X174 DNA-dependent in vitro dnaB complementation assay using an E. coli dnaBts extract. DA - 1987 DO - 10.1093/nar/15.2.385 1773912 LA - eng IS - 2 M2 - 385 PY - 1987 SN - 0305-1048 SP - 385-395 T2 - Nucleic Acids Research TI - A dnaB-like protein of Pseudomonas aeruginosa UR - https://nbn-resolving.org/urn:nbn:de:0070-bipr-16422 Y2 - 2024-11-22T05:00:36 ER -