A Hsap\CHMP4B cDNA is expressed under the control of shrb regulatory sequences. The coding sequence has been mutated to carry a R63E amino acid replacement.
Hsap\CHMP4BR63E.shrb/Hsap\CHMP4BR63E.shrb is a suppressor of lethal - all die during embryonic stage phenotype of shrb4
Hsap\CHMP4BR63E.shrb, shrb4 has sterile phenotype