title: Esterase-18 (ES-18) of the house mouse (Mus musculus): biochemical characterization and genetics of an allozyme system linked to chromosome 19.
abstract: This study describes the biochemical characterization, genetic variation, and linkage of a codominantly inherited murine esterase, termed ES-18. The enzyme was identified by isoelectric focusing of supernatants obtained after centrifugation of tissue homogenates and subsequent staining for esterase using either alpha-naphthyl acetate or 4-methylumbelliferyl elaidate as substrate. ES-18 exhibited an organ-specific variation of the intensity pattern of bands as seen in kidney, spleen, and macrophages, respectively. Its activity was highly sensitive to inhibition by 1 mmol.liter-1 p-chloromercuriphenylsulfonate but was resistant to bis-p-nitrophenyl phosphate. Four allozymes could be distinguished in kidney supernatants obtained from the inbred strains C57BL/10Sn (ES-18A), MOLF/Ei (ES-18B), WLL/BrA (ES-18C), and CAST/Ei (ES-18D). The enzyme is shown to be controlled by a structural locus, Es-18, which resides on chromosome 19. The gene order Ly-1 - Got-1 - 4.7 +/- 1.6 - Es-18 is suggested.
authors.affiliation: Abteilung für Chemische Pathologie Universität Freiburg, F.R.G.
authors.forename: O H
authors.initials: OH
authors.lastname: von Deimling
authors.forename: A
authors.initials: A
authors.lastname: Gaa
authors.forename: M M
authors.initials: MM
authors.lastname: Simon
mesh_terms: D000818:Animals; D043182:Carboxylesterase; D002265:Carboxylic Ester Hydrolases / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D002874:Chromosome Mapping; D005796:Genes; D007527:Isoenzymes / Q000235:genetics* / Q000302:isolation & purification / Q000378:metabolism; D007668:Kidney / Q000201:enzymology; D051379:Mice; D008815:Mice, Inbred Strains / Q000235:genetics*; D009928:Organ Specificity; D010641:Phenotype; D013045:Species Specificity
chemical_list: D007527:Isoenzymes; D002265:Carboxylic Ester Hydrolases; D043182:Carboxylesterase