Figure 2From: Cystinuria: an inborn cause of urolithiasisGenomic structure and putative function of the encoded protein regions of the cystinuria genes: the total number of mutations described so far for each exon is shown above, the localisation of the most frequent mutations is shown below the exon structure. a) SLC3A1/rBAT (TMD transmembrane domain; the largest part of the protein consists of an ectodomain (light brown) of three domains A-C, for further details see [4]). b) SLC7A9/b0,+AT (TMD transmembrane domain).Back to article page