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Record Information
Version5.0
StatusDetected and Quantified
Creation Date2005-11-16 15:48:42 UTC
Update Date2021-09-14 15:45:00 UTC
HMDB IDHMDB0001068
Secondary Accession Numbers
  • HMDB0062754
  • HMDB01068
  • HMDB62754
Metabolite Identification
Common NameD-Sedoheptulose 7-phosphate
DescriptionD-Sedoheptulose 7-phosphate (CAS: 2646-35-7) is an intermediate of the pentose phosphate pathway (PPP) that has two functions: (1) the generation of NADPH for reductive syntheses and oxidative stress responses within cells, and (2) the formation of ribose residues for nucleotide and nucleic acid biosynthesis (PMID: 16055050 ). It is formed by transketolase and acted upon (degraded) by transaldolase. Sedoheptulose 7-phosphate can be increased in the blood of patients affected with a transaldolase deficiency, a genetic disorder (PMID: 12881455 ). Sedoheptulose is a ketoheptose, a monosaccharide with seven carbon atoms and a ketone functional group. It is one of the few heptoses found in nature (Wikipedia ).
Structure
Thumb
Synonyms
Chemical FormulaC7H15O10P
Average Molecular Weight290.161
Monoisotopic Molecular Weight290.040283681
IUPAC Name{[(2R,3S,4R,5S,6S)-3,4,5,6-tetrahydroxy-6-(hydroxymethyl)oxan-2-yl]methoxy}phosphonic acid
Traditional Name[(2R,3S,4R,5S,6S)-3,4,5,6-tetrahydroxy-6-(hydroxymethyl)oxan-2-yl]methoxyphosphonic acid
CAS Registry Number89927-08-2
SMILES
OC[C@]1(O)O[C@H](COP(O)(O)=O)[C@@H](O)[C@@H](O)[C@@H]1O
InChI Identifier
InChI=1S/C7H15O10P/c8-2-7(12)6(11)5(10)4(9)3(17-7)1-16-18(13,14)15/h3-6,8-12H,1-2H2,(H2,13,14,15)/t3-,4-,5-,6+,7+/m1/s1
InChI KeyCBIDVWSRUUODHL-OVHBTUCOSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as hexose phosphates. These are carbohydrate derivatives containing a hexose substituted by one or more phosphate groups.
KingdomOrganic compounds
Super ClassOrganic oxygen compounds
ClassOrganooxygen compounds
Sub ClassCarbohydrates and carbohydrate conjugates
Direct ParentHexose phosphates
Alternative Parents
Substituents
  • Hexose phosphate
  • C-glycosyl compound
  • Glycosyl compound
  • Monosaccharide phosphate
  • Monoalkyl phosphate
  • Organic phosphoric acid derivative
  • Oxane
  • Phosphoric acid ester
  • Alkyl phosphate
  • Hemiacetal
  • Secondary alcohol
  • Organoheterocyclic compound
  • Oxacycle
  • Polyol
  • Organic oxide
  • Alcohol
  • Primary alcohol
  • Hydrocarbon derivative
  • Aliphatic heteromonocyclic compound
Molecular FrameworkAliphatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
Biological locationRoute of exposureSource
Process
Role
Physical Properties
StateSolid
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
Predicted Chromatographic Properties
Spectra
Biological Properties
Cellular Locations
  • Cytoplasm (predicted from logP)
Biospecimen Locations
  • Blood
  • Cellular Cytoplasm
  • Saliva
  • Urine
Tissue Locations
  • Fibroblasts
  • Placenta
Pathways
Normal Concentrations
Abnormal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected and Quantified5.19 +/- 0.84 uMAdult (>18 years old)BothTransaldolase deficiency details
SalivaDetected and Quantified0.91 +/- 0.26 uMAdult (>18 years old)MaleAlzheimer's disease details
SalivaDetected and Quantified0.84 +/- 0.13 uMAdult (>18 years old)MaleFrontotemporal lobe dementia details
SalivaDetected and Quantified1.60 +/- 1.55 uMAdult (>18 years old)BothLewy body disease details
Associated Disorders and Diseases
Disease References
Transaldolase deficiency
  1. Huck JH, Struys EA, Verhoeven NM, Jakobs C, van der Knaap MS: Profiling of pentose phosphate pathway intermediates in blood spots by tandem mass spectrometry: application to transaldolase deficiency. Clin Chem. 2003 Aug;49(8):1375-80. [PubMed:12881455 ]
Alzheimer's disease
  1. Tsuruoka M, Hara J, Hirayama A, Sugimoto M, Soga T, Shankle WR, Tomita M: Capillary electrophoresis-mass spectrometry-based metabolome analysis of serum and saliva from neurodegenerative dementia patients. Electrophoresis. 2013 Oct;34(19):2865-72. doi: 10.1002/elps.201300019. Epub 2013 Sep 6. [PubMed:23857558 ]
Frontotemporal dementia
  1. Tsuruoka M, Hara J, Hirayama A, Sugimoto M, Soga T, Shankle WR, Tomita M: Capillary electrophoresis-mass spectrometry-based metabolome analysis of serum and saliva from neurodegenerative dementia patients. Electrophoresis. 2013 Oct;34(19):2865-72. doi: 10.1002/elps.201300019. Epub 2013 Sep 6. [PubMed:23857558 ]
Lewy body disease
  1. Tsuruoka M, Hara J, Hirayama A, Sugimoto M, Soga T, Shankle WR, Tomita M: Capillary electrophoresis-mass spectrometry-based metabolome analysis of serum and saliva from neurodegenerative dementia patients. Electrophoresis. 2013 Oct;34(19):2865-72. doi: 10.1002/elps.201300019. Epub 2013 Sep 6. [PubMed:23857558 ]
Associated OMIM IDs
DrugBank IDNot Available
Phenol Explorer Compound IDNot Available
FooDB IDFDB022407
KNApSAcK IDNot Available
Chemspider ID58827526
KEGG Compound IDC05382
BioCyc IDCPD-19339
BiGG IDNot Available
Wikipedia LinkSedoheptulose_7-phosphate
METLIN IDNot Available
PubChem Compound92042786
PDB IDNot Available
ChEBI ID133983
Food Biomarker OntologyNot Available
VMH IDS7P
MarkerDB IDMDB00000299
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Nakayama Y, Kinoshita A, Tomita M: Dynamic simulation of red blood cell metabolism and its application to the analysis of a pathological condition. Theor Biol Med Model. 2005 May 9;2:18. [PubMed:15882454 ]
  2. Wamelink MM, Struys EA, Huck JH, Roos B, van der Knaap MS, Jakobs C, Verhoeven NM: Quantification of sugar phosphate intermediates of the pentose phosphate pathway by LC-MS/MS: application to two new inherited defects of metabolism. J Chromatogr B Analyt Technol Biomed Life Sci. 2005 Aug 25;823(1):18-25. Epub 2005 Jan 23. [PubMed:16055050 ]
  3. Huck JH, Struys EA, Verhoeven NM, Jakobs C, van der Knaap MS: Profiling of pentose phosphate pathway intermediates in blood spots by tandem mass spectrometry: application to transaldolase deficiency. Clin Chem. 2003 Aug;49(8):1375-80. [PubMed:12881455 ]
  4. Thornalley PJ, Jahan I, Ng R: Suppression of the accumulation of triosephosphates and increased formation of methylglyoxal in human red blood cells during hyperglycaemia by thiamine in vitro. J Biochem. 2001 Apr;129(4):543-9. [PubMed:11275553 ]
  5. Makarov SA, Kudriavtseva GV, Kolotilova AI: [Effect of prostaglandins F2 and F2 alpha on the pentosephosate pathway in human blood platelets]. Vopr Med Khim. 1983 Sep-Oct;29(5):27-32. [PubMed:6316661 ]
  6. Elshenawy S, Pinney SE, Stuart T, Doulias PT, Zura G, Parry S, Elovitz MA, Bennett MJ, Bansal A, Strauss JF 3rd, Ischiropoulos H, Simmons RA: The Metabolomic Signature of the Placenta in Spontaneous Preterm Birth. Int J Mol Sci. 2020 Feb 4;21(3). pii: ijms21031043. doi: 10.3390/ijms21031043. [PubMed:32033212 ]

Enzymes

General function:
Involved in catalytic activity
Specific function:
Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate (By similarity).
Gene Name:
TKTL1
Uniprot ID:
P51854
Molecular weight:
59302.195
Reactions
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Ribose 5-phosphate + Xylulose 5-phosphatedetails
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Ribose 5-phosphate + Xylulose 5-phosphatedetails
Aminofructose 6-phosphate + D-Ribose 5-phosphate → Iminoerythrose 4-phosphate + D-Sedoheptulose 7-phosphatedetails
General function:
Involved in catalytic activity
Specific function:
Transaldolase is important for the balance of metabolites in the pentose-phosphate pathway.
Gene Name:
TALDO1
Uniprot ID:
P37837
Molecular weight:
37539.74
Reactions
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Erythrose 4-phosphate + Fructose 6-phosphatedetails
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Erythrose 4-phosphate + Beta-D-Fructose 6-phosphatedetails
General function:
Involved in catalytic activity
Specific function:
Catalyzes the transfer of a two-carbon ketol group from a ketose donor to an aldose acceptor, via a covalent intermediate with the cofactor thiamine pyrophosphate.
Gene Name:
TKT
Uniprot ID:
P29401
Molecular weight:
67876.95
Reactions
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Ribose 5-phosphate + Xylulose 5-phosphatedetails
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Ribose 5-phosphate + Xylulose 5-phosphatedetails
Aminofructose 6-phosphate + D-Ribose 5-phosphate → Iminoerythrose 4-phosphate + D-Sedoheptulose 7-phosphatedetails
General function:
Involved in catalytic activity
Specific function:
Plays an essential role in total transketolase activity and cell proliferation in cancer cells; after transfection with anti-TKTL1 siRNA, total transketolase activity dramatically decreases and proliferation was significantly inhibited in cancer cells. Plays a pivotal role in carcinogenesis.
Gene Name:
TKTL2
Uniprot ID:
Q9H0I9
Molecular weight:
67876.625
Reactions
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Ribose 5-phosphate + Xylulose 5-phosphatedetails
D-Sedoheptulose 7-phosphate + Glyceraldehyde 3-phosphate → D-Ribose 5-phosphate + Xylulose 5-phosphatedetails
Aminofructose 6-phosphate + D-Ribose 5-phosphate → Iminoerythrose 4-phosphate + D-Sedoheptulose 7-phosphatedetails
General function:
Involved in phosphotransferase activity, alcohol group as acceptor
Specific function:
Acts as a modulator of macrophage activation through control of glucose metabolism (By similarity).
Gene Name:
SHPK
Uniprot ID:
Q9UHJ6
Molecular weight:
51504.425
Reactions
Adenosine triphosphate + Sedoheptulose → ADP + D-Sedoheptulose 7-phosphatedetails