The human homeobox gene HLX1 appears to be involved in hemopoietic dev
elopment and may represent a candidate gene for various developmental
or hemopoietic disorders. We have isolated genomic clones for the gene
, determined its intron-exon organization, and confirmed its map locat
ion on chromosome 1q41-q42. The transcription initiation sites of HLX1
were identified, and DNA sequences upstream of these sites were estab
lished. Finally, several differences between the genomic sequence and
the published cDNA sequence were noted. Translation based on this revi
sed sequence gives rise to a putative protein with 86.5% homology to t
he product of the murine Hlx gene. (C) 1994 Academic Press, Inc.