GAPB — Solanum tuberosum

Summary

PGSC0003DMG400029406, the potato GAPB gene on chromosome 12, encodes a glyceraldehyde-3-phosphate dehydrogenase with NADP+ and NAD+ phosphorylating activities, also annotated with histone acetyltransferase and kinase activities. The enzyme is associated with the reductive pentose-phosphate cycle, photorespiration, plastid glycolysis, and primary and secondary metabolism. It is linked to autotrophy, chlorophyll anabolism, the shikimate pathway, and responses to sucrose, chitin, and bacterial molecules. Localisation evidence connects the protein to the chloroplast stroma, thylakoid membrane, envelope, stromule, apoplast, plasmodesma, and cytosol. The gene is associated with photosynthetic rate and efficiency, carbohydrate content, bacterial blight disease resistance, disease tolerance, brassinosteroid sensitivity, stomatal closure time, and salt tolerance. Studies of related genes in other species link the family to defense responses, bacterial and fungal disease resistance, chitin-induced immune signaling, and thermotolerance.