Water PurificationChromatography, Ion ExchangeChromatography, AffinityPhysicochemical ProcessesWater SupplyDrinking WaterDisinfectionFiltrationWater MicrobiologyWaterMolecular WeightElectrophoresis, Polyacrylamide GelChromatography, GelChromatographySubstrate SpecificityMolecular Sequence DataKineticsAmino Acid SequenceHydrogen-Ion ConcentrationChromatography, DEAE-CelluloseFresh WaterAmino AcidsBody WaterIsoelectric PointEscherichia coliWater PollutionIsoelectric FocusingChromatography, High Pressure LiquidCrystallizationCloning, Molecular