Mapping of the human C3G gene coding a guanine nucleotide releasing protein for Ras family to 9q34.3 by fluorescence in situ hybridization.

C3G, a human guanine nucleotide releasing protein for Ras protein, was mapped to human chromosome 9q34.3 by fluorescence in situ hybridization with R-banded chromosomes. C3G was originally identified as one of the CRK-binding proteins, similar to c-abl (9q34.1). Our result suggests that the downstream factors of Crk are localized in close proximity on chromosome 9.