Heptosyl2-KDO2-lipid A (ECMDB20527) (M2MDB001335)

IdentificationTaxonomyPhysical PropertiesBiological PropertiesSpectraConcentrationsLinksReferencesEnzymes (2)XML
Proteins (2)
Record Information
Version2.0
Creation Date2012-05-31 14:49:06 -0600
Update Date2015-06-03 17:20:09 -0600
Secondary Accession Numbers
  • ECMDB20527
Identification
Name:Heptosyl2-KDO2-lipid A
DescriptionHeptosyl2-kdo2-lipid A is a component of lipopolysaccharide. 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
MOLSDFPDBSMILESInChI
Synonyms:
  • (heptosyl)2-(KDO)2-lipid A
  • Heptosyl-heptosyl-kdo2-lipidA
  • Heptosyl2-KDO2-lipid A
Chemical Formula:C124H228N2O51P2
Weight:Average: 2625.0674
Monoisotopic: 2623.478424052
InChI Key:MVLFKXQHQYOOOH-JMRRDJIDSA-N
InChI:InChI=1S/C124H228N2O51P2/c1-7-13-19-25-31-37-38-44-50-56-62-68-96(141)164-84(66-60-54-48-42-35-29-23-17-11-5)72-98(143)168-115-100(126-94(139)71-83(65-59-53-47-41-34-28-22-16-10-4)163-95(140)67-61-55-49-43-36-30-24-18-12-6)117(161-79-91-102(145)114(167-97(142)70-82(132)64-58-52-46-40-33-27-21-15-9-3)99(118(165-91)177-179(158,159)160)125-93(138)69-81(131)63-57-51-45-39-32-26-20-14-8-2)166-92(113(115)176-178(155,156)157)80-162-123(121(151)152)74-90(173-124(122(153)154)73-85(133)101(144)110(174-124)88(136)77-129)112(111(175-123)89(137)78-130)171-120-107(150)116(106(149)109(170-120)87(135)76-128)172-119-105(148)103(146)104(147)108(169-119)86(134)75-127/h81-92,99-120,122,127-137,144-150,153-154H,7-80H2,1-6H3,(H,125,138)(H,126,139)(H,151,152)(H2,155,156,157)(H2,158,159,160)/t81-,82-,83-,84-,85?,86+,87+,88?,89-,90-,91-,92-,99-,100-,101?,102-,103+,104+,105+,106-,107+,108?,109?,110?,111-,112-,113-,114-,115-,116+,117-,118-,119?,120?,123-,124?/m1/s1
CAS number:Not Available
IUPAC Name:(2R,4R,5R,6R)-4-{[6-(1,2-dihydroxyethyl)-2-(dihydroxymethyl)-4,5-dihydroxyoxan-2-yl]oxy}-6-[(1R)-1,2-dihydroxyethyl]-5-{[(3S,4S,5R)-6-[(1S)-1,2-dihydroxyethyl]-4-{[(3S,4S,5S)-6-[(1S)-1,2-dihydroxyethyl]-3,4,5-trihydroxyoxan-2-yl]oxy}-3,5-dihydroxyoxan-2-yl]oxy}-2-{[(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}oxane-2-carboxylic acid
Traditional IUPAC Name:(2R,4R,5R,6R)-4-{[6-(1,2-dihydroxyethyl)-2-(dihydroxymethyl)-4,5-dihydroxyoxan-2-yl]oxy}-6-[(1R)-1,2-dihydroxyethyl]-5-{[(3S,4S,5R)-6-[(1S)-1,2-dihydroxyethyl]-4-{[(3S,4S,5S)-6-[(1S)-1,2-dihydroxyethyl]-3,4,5-trihydroxyoxan-2-yl]oxy}-3,5-dihydroxyoxan-2-yl]oxy}-2-{[(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}oxane-2-carboxylic acid
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)[C@]([H])(OC5([H])OC([H])([C@@]([H])(O)CO)[C@@]([H])(O)[C@]([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 purine nucleosides. Purine nucleosides are compounds comprising a purine base attached to a ribosyl or deoxyribosyl moiety.
KingdomOrganic compounds
Super ClassNucleosides, nucleotides, and analogues
ClassPurine nucleosides
Sub ClassNot Available
Direct ParentPurine nucleosides
Alternative Parents
Substituents
  • Purine nucleoside
  • N-glycosyl compound
  • Glycosyl compound
  • Beta amino acid or derivatives
  • Pentose monosaccharide
  • 6-aminopurine
  • Purine
  • Imidazopyrimidine
  • Aminopyrimidine
  • Imidolactam
  • Pyrimidine
  • N-substituted imidazole
  • Monosaccharide
  • Heteroaromatic compound
  • Tetrahydrofuran
  • Organic sulfuric acid or derivatives
  • Imidazole
  • Azole
  • Amino acid
  • Secondary alcohol
  • Amino acid or derivatives
  • 1,2-diol
  • Oxacycle
  • Azacycle
  • Organoheterocyclic compound
  • Monocarboxylic acid or derivatives
  • Carboxylic acid
  • Carboxylic acid derivative
  • Organic nitrogen compound
  • Organic oxygen compound
  • Organopnictogen compound
  • Organic oxide
  • Hydrocarbon derivative
  • Primary amine
  • Organooxygen compound
  • Organonitrogen compound
  • Primary aliphatic amine
  • Carbonyl group
  • Amine
  • Alcohol
  • Organic anion
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External DescriptorsNot Available
Physical Properties
State:Not Available
Charge:-4
Melting point:Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
Water Solubility0.18 g/LALOGPS
logP3.3ALOGPS
logP17ChemAxon
logS-4.2ALOGPS
pKa (Strongest Acidic)0.55ChemAxon
pKa (Strongest Basic)-4.7ChemAxon
Physiological Charge-4ChemAxon
Hydrogen Acceptor Count47ChemAxon
Hydrogen Donor Count27ChemAxon
Polar Surface Area847.33 ŲChemAxon
Rotatable Bond Count106ChemAxon
Refractivity642.48 m³·mol⁻¹ChemAxon
Polarizability290.97 ųChemAxon
Number of Rings6ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Membrane
Reactions:
Heptosyl-KDO2-lipid A + ADP-L-Glycero-D-manno-heptose > Hydrogen ion + Heptosyl2-KDO2-lipid A + ADP
UDP-Glucose + Heptosyl2-KDO2-lipid A > Hydrogen ion + Glucosyl-heptosyl2-KDO2-lipid A + Uridine 5'-diphosphate
SMPDB Pathways:
Lipopolysaccharide biosynthesisPW000831 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
  • Lipopolysaccharide biosynthesis ec00540
EcoCyc Pathways:
Concentrations
Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, PositiveNot AvailableView in JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, PositiveNot AvailableView in JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, PositiveNot AvailableView in JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, NegativeNot AvailableView in JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, NegativeNot AvailableView in JSpectraViewer
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, NegativeNot AvailableView in JSpectraViewer
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 ID25202915
Kegg IDNot Available
ChemSpider IDNot Available
Wikipedia IDNot Available
BioCyc IDCPD0-930
EcoCyc IDCPD0-930

Enzymes

Protein Details
1. Lipopolysaccharide core biosynthesis protein rfaG
General function:
Involved in biosynthetic process
Specific function:
Involved in the addition of the first glucose residue to the lipopolysaccharide core
Gene Name:
rfaG
Uniprot ID:
P25740
Molecular weight:
42284
Protein Details
2. ADP-heptose--LPS heptosyltransferase 2
General function:
Involved in transferase activity, transferring glycosyl groups
Specific function:
Specific function unknown
Gene Name:
rfaF
Uniprot ID:
P37692
Molecular weight:
39042