Amino acids 74-83 (SKDLKVKRIT) are replaced with amino acids 70-79 (ARDNKKTRII) of His2A.
wild-type
His2Av+tM5 rescues His2Av810
The lethality associated with His2Av810 is fully rescued by His2Av+tM5. All flies survive to adulthood at 25oC and 29oC.