Fig. 2
From: OMGene: mutual improvement of gene models through optimisation of evolutionary conservation
Calculation of adjacency groups. a) Amino acid sequences for individual putative exons are strung together and aligned. b) A graph is formed with vertices formed by gene parts (or exons), and edges drawn when the overlap between two parts is greater than or equal to one third the length of one of them. c) Cliques are extracted and then ordered lexicographically to form the adjacency groups