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15N metabolic labeling of mammalian tissue with slow protein turnover.


ABSTRACT: We previously reported the metabolic 15N labeling of a rat where enrichment ranged from 94% to 74%. We report here an improved labeling strategy which generates 94% 15N enrichment throughout all tissues of the rat. A high 15N enrichment of the internal standard is necessary for accurate quantitation, and thus, this approach will allow quantitative mass spectrometry analysis of animal models of disease targeting any tissue.

SUBMITTER: McClatchy DB 

PROVIDER: S-EPMC2527585 | biostudies-other | 2007 May

REPOSITORIES: biostudies-other

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15N metabolic labeling of mammalian tissue with slow protein turnover.

McClatchy Daniel B DB   Dong Meng-Qiu MQ   Wu Christine C CC   Venable John D JD   Yates John R JR  

Journal of proteome research 20070322 5


We previously reported the metabolic 15N labeling of a rat where enrichment ranged from 94% to 74%. We report here an improved labeling strategy which generates 94% 15N enrichment throughout all tissues of the rat. A high 15N enrichment of the internal standard is necessary for accurate quantitation, and thus, this approach will allow quantitative mass spectrometry analysis of animal models of disease targeting any tissue. ...[more]

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