Alternative titles; symbols
HGNC Approved Gene Symbol: GK3
Sargent et al. (1994) suggested that the human glycerol kinase gene family consists of at least 3 expressed loci. The GK gene (300474) on Xp21 is probably ancestral to several other genes which, because they are intronless, are suspected of having arisen by reverse transcriptase mediated events. These include 2 genes, GTKA (GK2; 600148) and GKTB, which are expressed as a single mRNA species in testis where expression is at a high level.
By fluorescence in situ hybridization, Sargent et al. (1994) mapped the testicular forms of GK to chromosome 4: GKTA to 4q13 and GKTB to 4q32.
Sargent, C. A., Young, C., Marsh, S., Ferguson-Smith, M. A., Affara, N. A. The glycerol kinase gene family: structure of the Xp gene, and related intronless retroposons. Hum. Molec. Genet. 3: 1317-1324, 1994. [PubMed: 7987308] [Full Text: https://doi.org/10.1093/hmg/3.8.1317]