staphyloxanthin biosynthesis KEGG:map00906 UPa:UPA00029 Biosynthesis of staphyloxanthin. Staphyloxanthin is an orange membrane-bound carotenoid pigment produced by most Staphylococcus aureus strains. It is well known that carotenoids function as antioxidants, and it has been suggested that staphyloxanthin can protect Staphylococcus aureus against oxidative stress. PMID:16020541 alpha-D-glucopyranosyl 1-O-(4,4'-diaponeurosporen-4-oate) 6-O-(12-methyltetradecanoate) biosynthesis pathway carotenoid biosynthesis xantophyll biosynthesis