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  • Title: Tubulin nitration in human gliomas.
    Author: Fiore G, Di Cristo C, Monti G, Amoresano A, Columbano L, Pucci P, Cioffi FA, Di Cosmo A, Palumbo A, d'Ischia M.
    Journal: Neurosci Lett; 2006 Feb 06; 394(1):57-62. PubMed ID: 16257120.
    Abstract:
    Immunohistochemical and biochemical investigations showed that significant protein nitration occurs in human gliomas, especially in grade IV glioblastomas at the level of astrocytes and oligodendrocytes and neurones. Enhanced alpha-tubulin immunoreactivity was co-present in the same elements in the glioblastomas. Proteomic methodologies were employed to identify a nitrated protein band at 55 kDa as alpha-tubulin. Peptide mass fingerprinting procedures demonstrated that tubulin is nitrated at Tyr224 in grade IV tumour samples but is unmodified in grade I samples and in non-cancerous brain tissue. These results provide the first characterisation of endogenously nitrated tubulin from human tumour samples.
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