GTPase, IMAP Family, Member 6 (GIMAP6)

GIMAP6 encodes a protein belonging to the GTP-binding superfamily and to the immuno-associated nucleotide (IAN) subfamily of nucleotide-binding proteins. In humans, IAN subfamily genes are located in a cluster at 7q36.1. Two transcript variants, one protein-coding and the other probably non-protein-coding, have been found for this gene. The six genes hgimap1, hgimap2, hgimap4, hgimap5, hgimap6, and hgimap7 encode 33-46 kDa proteins with one GTP-binding domain, whereas hgimap8 encodes a very unusual 75-kDa protein with three GTP-binding domains. All hgimap genes except hgimap2 have orthologs in the mouse. Major expression sites of hgimap mRNAs are the spleen and lymph nodes, but also other organs such as muscle, heart, placenta, and digestive tract display detectable hgimap mRNA levels.