Homologs of insG from Escherichia coli BW25113
insG: KpLE2 phage-like element; IS4 predicted transposase (NCBI)
KEGG: putative transposase
87 hits from BLASTp (E < 0.01)
Or try PaperBLAST, fast.genomics, the ENIGMA genome browser, or the comparative fitness browser