Maltoside

File:Decyl-beta-D-maltoside.svg

A maltoside is a glycoside with maltose as the glycone (sugar) functional group. Among the most common are alkyl maltosides, which contain hydrophobic alkyl chains as the aglycone. Given their amphiphilic properties, these comprise a class of detergents, where variation in the alkyl chain confers a range of detergent properties including CMC and solubility. Maltosides are most often used for the solubilization and purification of membrane proteins.

History

In 1980 Ferguson-Miller et al. at Michigan State developed n-dodecyl-β-D-maltopyranoside (DDM) as part of a successful effort to purify an active, stable, monodisperse form of cytochrome c oxidase.{{cite journal|last1=Rosevear|first1=P|last2=VanAken |first2=T |last3=Baxter |first3=J |last4=Ferguson-Miller |first4=S |title=Alkyl glycoside detergents: a simpler synthesis and their effects on kinetic and physical properties of cytochrome c oxidase.|journal=Biochemistry|date=Aug 19, 1980|volume=19|issue=17|pages=4108–15|pmid=6250583|doi=10.1021/bi00558a032}} Maltosides have been used extensively to stabilize membrane proteins for biophysical and structural studies.

Table of detergent properties

class="wikitable"
Maltosideabbr.CMC (mM)MW (g/mol)Micelle (kDa)
n-Decyl-β-D-maltopyranosideDM1.8 {{cite journal |last1=Alpes |first1=H. |last2=Apell |first2=H.-J. |last3=Knoll |first3=G. |last4=Plattner |first4=H. |last5=Riek |first5=R. |title=Reconstitution of Na+/K+-ATPase into phosphatidylcholine vesicles by dialysis of nonionic alkyl maltoside detergents |journal=Biochimica et Biophysica Acta (BBA) - Biomembranes |date=December 1988 |volume=946 |issue=2 |pages=379–388 |doi=10.1016/0005-2736(88)90413-0}} (H2O)482.6~33 (69 molecules)
n-Dodecyl-β-D-maltopyranosideDDM0.17 {{cite book |last1=Vanaken |first1=T. |last2=Foxall-Vanaken |first2=S. |last3=Castleman |first3=S. |last4=Ferguson-Miller |first4=S. | chapter = Alkyl glycoside detergents: Synthesis and applications to the study of membrane proteins | title = Biomembranes Part M | year = 1986 | volume = 125 | pages = 27–35 | doi = 10.1016/S0076-6879(86)25005-3 | pmid = 3012259 | series = Methods in Enzymology | isbn = 9780121820251}}510.6~72 (~78-149 molecules){{cite journal |last1=Strop |first1=Pavel |last2=Brunger |first2=Axel T. |title=Refractive index‐based determination of detergent concentration and its application to the study of membrane proteins |journal=Protein Science |date=August 2005 |volume=14 |issue=8 |pages=2207–2211 |doi=10.1110/ps.051543805}}
6-Cyclohexyl-1-hexyl-β-D-maltopyranosideCymal-60.56508.546.3

References