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Most malignancies displayed moderate immunoreactivity. Skin, lung , breast, colorectal and cervical cancers displayed strong positivity in many cases. Several cases of malignant glioma were weakly stained or negative.
Malignant cells generally showed moderate to strong cytoplasmic and membranous immunoreactivity. Cases of renal cell carcinomas and malignant lymphomas showed distinct nuclear positivity.
Rho GTPases play a fundamental role in numerous cellular processes that are initiated by extracellular stimuli that work through G protein coupled receptors. The encoded protein may form a complex with G proteins and stimulate Rho-dependent signals. A similar protein in rat interacts with glutamate transporter EAAT4 and modulates its glutamate transport activity. Expression of the rat protein induces the reorganization of the actin cytoskeleton and its overexpression induces the formation of membrane ruffling and filopodia. Two alternative transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]