Rhamnose

Rhamnose (Rham) is a naturally occurring deoxy sugar. It can be classified as either a methyl-pentose or a 6-deoxy-hexose. Rhamnose occurs in nature in its -form as -rhamnose (6-deoxy--mannose). This is unusual, since most of the naturally occurring sugars are in D-form. Exceptions are the methyl pentoses -fucose and -rhamnose and the pentose -arabinose.

Rhamnose can be isolated from Buckthorn (Rhamnus), poison sumac, and plants in the genus Uncaria. High-rhamnose extracts from the latter have found use in anti-wrinkle creams.

Rhamnose is commonly bound to other sugars in nature. It is a common glycone component of glycosides from many plants. Rhamnose is also a component of the outer cell membrane of acid-fast bacteria in the Mycobacterium genus, which includes the organism that causes tuberculosis.

Other articles related to "rhamnose":

Flavonol-3-O-glucoside L-rhamnosyltransferase
... EC 2.4.1.159) is an enzyme that catalyzes the chemical reaction UDP-L-rhamnose + a flavonol 3-O-D-glucoside UDP + a flavonol 3-O- Thus, the two substrates of this enzyme are UDP-L ...
L-rhamnose Isomerase
... In enzymology, a L-rhamnose isomerase (EC 5.3.1.14) is an enzyme that catalyzes the chemical reaction L-rhamnose L-rhamnulose Hence, this enzyme has one substrate, L-rhamnose, and one product, L-rhamnulose ... The systematic name of this enzyme class is L-rhamnose aldose-ketose-isomerase ... Other names in common use include rhamnose isomerase, and L-rhamnose ketol-isomerase ...
DTDP-4-dehydrorhamnose 3,5-epimerase
... Other names in common use include dTDP-L-rhamnose synthetase, dTDP-L-rhamnose synthetase, thymidine diphospho-4-ketorhamnose 3,5-epimerase, TDP-4-ketorhamnose 3,5-epimerase, dTDP-4-dehydro ...
GDP-4-dehydro-D-rhamnose Reductase
... In enzymology, a GDP-4-dehydro-D-rhamnose reductase (EC 1.1.1.187) is an enzyme that catalyzes the chemical reaction GDP-6-deoxy-D-mannose + NAD(P)+ GDP-4-dehydro-6-deoxy-D-mannose + NAD(P)H ... GDP-4-keto-6-deoxy-D-mannose reductase, GDP-4-keto-D-rhamnose reductase, and guanosine diphosphate-4-keto-D-rhamnose reductase ...