GAL4 insertion line expresses the yeast GAL4 transcriptional activator under the control of a native gene promoter, or driver gene in non-specific or stage-and/or tissue-specific patterns. This collection is useful for UAS-mediated expression of a target gene. We have about 4,500 GAL4 lines with different expression patterns available for distribution.
Further information about the NP lines (GAL4 enhancer trap lines) can be found in the NP lines section.
The GAL80 blocks the GAL4's transcirption activation ability. It is useful to regulate expression using GAL4-UAS system.