Localization of MIC5 to the region between HPRT and G6PD on the human X chromosome

Abstract
The X-linked gene, MIC5, encodes a human cell-surface antigen, R1. We have assigned MIC5 to the region between HPRT and G6PD on the long arm of the X chromosome. Regional localization was based on the pattern of reactivity of the R1 monoclonal antibody with human-rodent somatic cell hybrids which contained different fragments of the human X chromosome.