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Preclinical Alzheimer disease: brain oxidative stress, Abeta peptide and proteomics

Parkin B, Ouillette P, Wang Y, Liu Y, Wright W, Roulston D, et al

[8][9] Food sources of choline include peanuts, soybeans, wheat, chicken, fish, beef, cauliflower, eggs, and lettuce

From here, GDP-D-mannose is converted to L-gulose in three reactions catalyzed by GDP-D-mannose3, 5-epimerase, GDP-L-gulose-1-P-phosphatase and L-gulose-1-P-phosphatase, respectively