Arabinose is an aldopentose - a monosaccharide containing five carbon atoms, including an aldehyde (CHO) functional group. For biosynthetic reasons, most sugars almost always exist in nature in the "D" form, or structurally similar to D-glyceraldehyde. However, L-arabinose is actually more commonly found in nature than D-arabinose and is found in nature as a component of biopolymers such as hemicellulose and pectin. The L-arabinose operon, also known as the araBAD operon, has been the subject of numerous biomolecular studies. An operon directs arabinose catabolism in Escherichia coli, dynamically activated in the presence and absence of glucose. As a professional L-arabinose supplier and food additive manufacturer, Healtang has been providing high quality L-arabinose to customers all over the world. If you have any questions or would like a quote, please do not hesitate to contact us. Our sales staff will reply you within 1 business day.