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Microbes Infect. 2003 Feb;5(2):143-50.

Helicobacter pylori CagA--a potential bacterial oncoprotein that functionally mimics the mammalian Gab family of adaptor proteins.

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Division of Molecular Oncology and Institute for Genetic Medicine, Graduate School of Science, Hokkaido University, Kita-15, Nishi-7, Kita-ku, Sapporo 060-0815, Japan.


Helicobacter pylori virulence factor CagA is injected into gastric epithelial cells and undergoes tyrosine phosphorylation. Similar to mammalian Gab protein, tyrosine-phosphorylated CagA recruits and activates SHP-2 phosphatase at the plasma membrane, thereby inducing a growth factor-like effect. CagA-SHP-2 interaction may play an important role in bacterial pathogenesis, leading to gastric carcinoma.

[Indexed for MEDLINE]

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