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To evaluate and analyze the urinary proteome in infants with stable grade 4 ureteropelvic junction obstruction (UPJO) and compare to age-matched normal controls.Bladder urine specimens were obtained from 21 healthy infants with normal maternal/fetal ultrasound and 25 infants with grade 4 unilateral UPJO. All patients had >40% ipsilateral individual kidney function by renal scanning and the anteroposterior...
Phosphorylation has been the most studied of all the posttranslational modifications of proteins. Mass spectrometry has emerged as a powerful tool for phosphomapping on proteins/peptides. Collision-induced dissociation (CID) of phosphopeptides leads to the loss of phosphoric or metaphosphoric acid as a neutral molecule, giving an intense neutral loss product ion in the mass spectrum. Dissociation...
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