UASt regulatory sequences drive expression of a 500bp inverted repeat.
Expression of SbNIG.4316R under the control of Scer\GAL4ptc-559.1 narrows the L3-L4 intervein region and reduces the anterior crossvein. Expression driven by Scer\GAL4C-765 reduces the size of both the anterior and posterior compartments and appears to primarily affect proximo-distal growth. Wings are 32% shorter than controls, and many wings appear crumpled. In addition, vein bifurcations and ectopic veins, including a stretch positioned anterior to L4, are observed frequently. Expression of SbNIG.4316R exclusively in the posterior compartment using Scer\GAL4en-e16E has only mild effects. Overall wing size is unaffected and bifurcations of the posterior cross vein are observed but rarely.
Flies expressing SbNIG.4316R under the control of Scer\GAL4da.G32 show comparable levels of mortality to wild type in response to mild wounding in 7-8 day old adults.