Figure 1From: Distribution of events of positive selection and population differentiation in a metabolic pathway: the case of asparagine N-glycosylationOverview of the Asparagine N-Glycosylation pathway. The Quality Control Cycle (also known as Calnexin/Calreticulin Cycle), which divides the pathway into two parts, is shown as an octagon. Genes classified as ‘upstream’ in the analysis are in blue; genes classified as ‘downstream’ are in green. Genes in gray have been excluded from the network analysis (see methods).Back to article page