Record Information
Version2.0
Creation Date2012-05-31 14:49:25 -0600
Update Date2015-06-03 17:20:10 -0600
Secondary Accession Numbers
  • ECMDB20533
Identification
Name:Galactosyl-glucosyl2-heptosyl3-KDO2-lipid A-bisphosphate
DescriptionGalactosyl-glucosyl2-heptosyl3-kdo2-lipid a-bisphosphate is a component of LPS. Bacterial lipopolysaccharides (LPS) typically consist of a hydrophobic domain inserted into the outer membrane known as lipid A (or endotoxin), a phosphorylated "core" oligosaccharide and a distal polysaccharide (or O antigen). The core oligosaccharides are conceptually divided into two regions: inner core and outer core. The inner core is highly conserved, comprises three deoxy-D-manno-octulosonic acid (KDO) and L-glycero-D-manno-heptose (Hep) and is often phosphorylated. The inner core oligosaccharide plays a critical role in essential barrier function of the outer membrane. The outer core comprises a tri-hexose backbone modified with varying side-branch substitutions of hexose and acetamidohexose residues. The outer core provides an attachment site for O-antigen. The completed lipid A-KDO2 serves as the acceptor on which the core oligosaccharide chains are assembled by sequential glycosyl transfer from nucleotide sugar precursors. This process involves a co-ordinated complex of membrane-associated glycosyltransferases acting at the cytoplasmic face of the plasma membrane.
Structure
Thumb
Synonyms:
  • Galactosyl-glucosyl2-heptosyl3-kdo2-lipid a-bisphosphoric acid
Chemical Formula:C149H274N2O78P4
Weight:Average: 3465.6315
Monoisotopic: 3463.648593342
InChI Key:FFWQRZVPZLTLGX-LCELMEHOSA-P
InChI:InChI=1S/C149H272N2O78P4/c1-7-13-19-25-31-37-38-44-50-56-62-68-104(169)208-88(66-60-54-48-42-35-29-23-17-11-5)72-106(171)215-132-108(151-102(167)71-87(65-59-53-47-41-34-28-22-16-10-4)207-103(168)67-61-55-49-43-36-30-24-18-12-6)138(204-82-98-112(175)131(214-105(170)70-86(159)64-58-52-46-40-33-27-21-15-9-3)107(139(211-98)229-233(200,201)202)150-101(166)69-85(158)63-57-51-45-39-32-26-20-14-8-2)213-100(130(132)226-230(191,192)193)84-206-148(146(187)188)74-95(223-149(147(189)190)73-89(160)109(172)125(224-149)91(162)76-153)129(128(225-148)93(164)78-155)219-144-122(185)134(136(227-231(194,195)196)126(217-144)92(163)77-154)222-145-123(186)135(137(228-232(197,198)199)127(218-145)94(165)81-203-141-119(182)116(179)117(180)124(216-141)90(161)75-152)221-143-121(184)133(220-142-120(183)115(178)111(174)97(80-157)210-142)113(176)99(212-143)83-205-140-118(181)114(177)110(173)96(79-156)209-140/h85-100,107-145,147,152-165,172-186,189-190,194-199H,7-84H2,1-6H3,(H5-2,150,151,166,167,187,188,191,192,193,200,201,202)/p+2/t85-,86-,87-,88-,89?,90?,91?,92?,93-,94+,95-,96?,97?,98-,99?,100-,107-,108-,109?,110?,111?,112-,113?,114?,115?,116?,117?,118?,119?,120?,121?,122+,123+,124?,125?,126?,127?,128-,129-,130-,131-,132-,133?,134-,135-,136-,137-,138-,139-,140?,141?,142?,143?,144?,145?,148-,149?/m1/s1
CAS number:Not Available
IUPAC Name:{[(3R,4R,5S)-6-{[(2R,3R,4R,6R)-6-carboxy-4-{[6-(1,2-dihydroxyethyl)-2-(dihydroxymethyl)-4,5-dihydroxyoxan-2-yl]oxy}-2-[(1R)-1,2-dihydroxyethyl]-6-{[(2R,3S,4R,5R,6R)-6-{[(2R,3S,4R,5R,6R)-5-{[(3R)-1,3-dihydroxytetradecylidene]amino}-3-hydroxy-4-{[(3R)-3-hydroxytetradecanoyl]oxy}-6-(phosphonooxy)oxan-2-yl]methoxy}-5-{[(3R)-3-(dodecanoyloxy)-1-hydroxytetradecylidene]amino}-3-(phosphonooxy)-4-{[(3R)-3-(tetradecanoyloxy)tetradecanoyl]oxy}oxan-2-yl]methoxy}oxan-3-yl]oxy}-4-{[(3S,4R,5R)-4-[(3,5-dihydroxy-4-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan-2-yl)oxy]-6-[(1S)-2-{[6-(1,2-dihydroxyethyl)-3,4,5-trihydroxyoxan-2-yl]oxy}-1-hydroxyethyl]-3-hydroxy-5-[(trihydroxyphosphaniumyl)oxy]oxan-2-yl]oxy}-2-(1,2-dihydroxyethyl)-5-hydroxyoxan-3-yl]oxy}trihydroxyphosphanium
Traditional IUPAC Name:{[(3R,4R,5S)-6-{[(2R,3R,4R,6R)-6-carboxy-4-{[6-(1,2-dihydroxyethyl)-2-(dihydroxymethyl)-4,5-dihydroxyoxan-2-yl]oxy}-2-[(1R)-1,2-dihydroxyethyl]-6-{[(2R,3S,4R,5R,6R)-6-{[(2R,3S,4R,5R,6R)-5-{[(3R)-1,3-dihydroxytetradecylidene]amino}-3-hydroxy-4-{[(3R)-3-hydroxytetradecanoyl]oxy}-6-(phosphonooxy)oxan-2-yl]methoxy}-5-{[(3R)-3-(dodecanoyloxy)-1-hydroxytetradecylidene]amino}-3-(phosphonooxy)-4-{[(3R)-3-(tetradecanoyloxy)tetradecanoyl]oxy}oxan-2-yl]methoxy}oxan-3-yl]oxy}-4-{[(3S,4R,5R)-4-[(3,5-dihydroxy-4-{[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-6-({[3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}methyl)oxan-2-yl)oxy]-6-[(1S)-2-{[6-(1,2-dihydroxyethyl)-3,4,5-trihydroxyoxan-2-yl]oxy}-1-hydroxyethyl]-3-hydroxy-5-[(trihydroxyphosphaniumyl)oxy]oxan-2-yl]oxy}-2-(1,2-dihydroxyethyl)-5-hydroxyoxan-3-yl]oxy}trihydroxyphosphanium
SMILES:[H][C@@](O)(CCCCCCCCCCC)CC(=O)O[C@@]1([H])[C@]([H])(O)[C@@]([H])(CO[C@]2([H])O[C@]([H])(CO[C@@]3(C[C@@]([H])(OC4(CC([H])(O)C([H])(O)C([H])(O4)C([H])(O)CO)C(O)O)[C@@]([H])(OC4([H])OC([H])(C([H])(O)CO)[C@@]([H])(O[P+](O)(O)O)[C@]([H])(OC5([H])OC([H])([C@@]([H])(O)COC6([H])OC([H])(C([H])(O)CO)C([H])(O)C([H])(O)C6([H])O)[C@@]([H])(O[P+](O)(O)O)[C@]([H])(OC6([H])OC([H])(COC7([H])OC([H])(CO)C([H])(O)C([H])(O)C7([H])O)C([H])(O)C([H])(OC7([H])OC([H])(CO)C([H])(O)C([H])(O)C7([H])O)C6([H])O)[C@]5([H])O)[C@]4([H])O)[C@]([H])(O3)[C@]([H])(O)CO)C(O)=O)[C@@]([H])(OP(O)(O)=O)[C@]([H])(OC(=O)C[C@@]([H])(CCCCCCCCCCC)OC(=O)CCCCCCCCCCCCC)[C@@]2([H])N=C(O)C[C@@]([H])(CCCCCCCCCCC)OC(=O)CCCCCCCCCCC)O[C@]([H])(OP(O)(O)=O)[C@]1([H])N=C(O)C[C@]([H])(O)CCCCCCCCCCC
Chemical Taxonomy
Description belongs to the class of organic compounds known as saccharolipids. Saccharolipids are compounds in which fatty acids are linked directly to a sugar backbone, forming structures that are compatible with membrane bilayers. In the saccharolipids, a sugar substitutes for the glycerol backbone that is present in glycerolipids and glycerophospholipids. The most familiar saccharolipids contain an acylated glucosamine. In contrast to others glycolipids, the fatty acid is not glycosidically linked to the sugar moiety.
KingdomOrganic compounds
Super ClassLipids and lipid-like molecules
ClassSaccharolipids
Sub ClassNot Available
Direct ParentSaccharolipids
Alternative Parents
Substituents
  • Oligosaccharide phosphate
  • Oligosaccharide
  • Saccharolipid
  • Pentacarboxylic acid or derivatives
  • Hexose phosphate
  • N-acyl-alpha-hexosamine
  • Fatty acyl glycoside
  • C-glucuronide
  • Alkyl glycoside
  • O-glycosyl compound
  • Glycosyl compound
  • C-glycosyl compound
  • Ketal
  • Monoalkyl phosphate
  • Fatty acid ester
  • Beta-hydroxy acid
  • Fatty acyl
  • Alkyl phosphate
  • Pyran
  • Phosphoric acid ester
  • Oxane
  • Organic phosphoric acid derivative
  • Hydroxy acid
  • Secondary alcohol
  • Carboxylic acid ester
  • Oxacycle
  • Organoheterocyclic compound
  • Polyol
  • Carboxylic acid
  • Carboxylic acid derivative
  • Carboximidic acid derivative
  • Carboximidic acid
  • Carbonyl hydrate
  • Acetal
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Carbonyl group
  • Alcohol
  • Organic cation
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External DescriptorsNot Available
Physical Properties
State:Not Available
Charge:-2
Melting point:Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
logP8.18ChemAxon
pKa (Strongest Acidic)0.55ChemAxon
pKa (Strongest Basic)-4.7ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count74ChemAxon
Hydrogen Donor Count44ChemAxon
Polar Surface Area1283.54 ŲChemAxon
Rotatable Bond Count123ChemAxon
Refractivity802.08 m³·mol⁻¹ChemAxon
Polarizability365.71 ųChemAxon
Number of Rings10ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Membrane
Reactions:
SMPDB Pathways:
Lipopolysaccharide biosynthesisPW000831 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
  • Lipopolysaccharide biosynthesis ec00540
EcoCyc Pathways:
Concentrations
Not Available
Spectra
Spectra:Not Available
References
References:
  • Kanehisa, M., Goto, S., Sato, Y., Furumichi, M., Tanabe, M. (2012). "KEGG for integration and interpretation of large-scale molecular data sets." Nucleic Acids Res 40:D109-D114. Pubmed: 22080510
  • Keseler, I. M., Collado-Vides, J., Santos-Zavaleta, A., Peralta-Gil, M., Gama-Castro, S., Muniz-Rascado, L., Bonavides-Martinez, C., Paley, S., Krummenacker, M., Altman, T., Kaipa, P., Spaulding, A., Pacheco, J., Latendresse, M., Fulcher, C., Sarker, M., Shearer, A. G., Mackie, A., Paulsen, I., Gunsalus, R. P., Karp, P. D. (2011). "EcoCyc: a comprehensive database of Escherichia coli biology." Nucleic Acids Res 39:D583-D590. Pubmed: 21097882
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Not Available
External Links:
ResourceLink
CHEBI IDNot Available
HMDB IDNot Available
Pubchem Compound ID25202942
Kegg IDNot Available
ChemSpider IDNot Available
Wikipedia IDNot Available
BioCyc IDCPD0-937
EcoCyc IDCPD0-937

Enzymes

General function:
Involved in transferase activity, transferring glycosyl groups
Specific function:
UDP-glucose + lipopolysaccharide = UDP + D- glucosyl-lipopolysaccharide
Gene Name:
rfaJ
Uniprot ID:
P27129
Molecular weight:
39040
Reactions
UDP-glucose + lipopolysaccharide = UDP + D-glucosyl-lipopolysaccharide.
General function:
Involved in transferase activity, transferring glycosyl groups
Specific function:
UDP-galactose + lipopolysaccharide = UDP + 3- alpha-D-galactosyl-[lipopolysaccharide glucose]
Gene Name:
rfaI
Uniprot ID:
P27128
Molecular weight:
39423
Reactions
UDP-galactose + lipopolysaccharide = UDP + 3-alpha-D-galactosyl-[lipopolysaccharide glucose].