Intron-Exon structure of Group I Nme genes in chordates. (A) Intron-Exon structure and evolutionary depiction of Group I Nme gene structure among chordate lineage. (B) Intron-Exon structure of human NMELV transcript compared to Intron-Exon structure of human NME1 and NME2. Intron-exon structure was obtained using Ensembl database, or, when no information was available, by Blat of protein and cDNA sequences on genomes assemblies. Boxes correspond to exons. Non-coding exons are shown in grey. The size of introns and exons in nucleotides is shown. Introns are not drawn to scale.