Enzyme Evolution & Substrate Specificity in Maltose Metabolism Pathways #2307988 (License: Personal Use)

The diagram illustrates evolutionary pathways from ancestral enzymes (ancMALS, ancMAL, ancMAL-IMA, ancIMA1-4) to modern isoforms (IMA1-5, MAL12, MAL32), mapping how substrate preferences-including maltose, sucrose, turanose, maltotriose, maltulose, methyl-α-glucoside, isomaltose, and palatinose-diverged over time. Each colored stream represents a lineage with quantified specificity constants (kcat/Km = 5 per mM·min), revealing functional shifts linked to structural adaptations. The legend distinguishes maltose-similarity (top) from isomaltose-similarity (bottom) substrates.

Used in molecular evolution or enzymology research pages, educational content on carbohydrate metabolism, or bioinformatics tools explaining enzyme phylogeny; matches user intent for understanding enzyme divergence, substrate promiscuity, or metabolic pathway engineering.