To develop a concise proteomic procedure to verify the protein disulfide bond arrangement, non-reductive trypsin digestion of neuregulin 1-beta1 (176-246), a model disulfide-containing protein, was assessed by a proteolytic (18)O-labeling analysis. As a result, the commonly used in-gel tryptic digestion method has been improved for use entirely under neutral pH conditions. With this procedure, the disulfide arrangement of proteins could represent a clinical index candidate in pathological proteomic studies.
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| http://dx.doi.org/10.1002/pmic.200900056 | DOI Listing |
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