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Record Information
Creation Date2006-05-22 14:17:46 UTC
Update Date2016-02-11 01:05:32 UTC
Secondary Accession NumbersNone
Metabolite Identification
Common NameArsenic
DescriptionArsenic(As) is a ubiquitous metalloid found in several forms in food and the environment, such as the soil, air and water. Physiologically, it exists as an ion in the body. The predominant form is inorganic arsenic in drinking water, which is both highly toxic and carcinogenic and rapidly bioavailable. Arsenic is currently one of the most important environmental global contaminants and toxicants, particularly in the developing countries. For decades, very large populations have been and are currently still exposed to inorganic Arsenic through geogenically contaminated drinking water. An increased incidence of disease mediated by this toxicant is the consequence of long-term exposure. In human's chronic ingestion of inorganic arsenic (> 500 mg/L As) has been associated with cardiovascular, nervous, hepatic and renal diseases and diabetes mellitus as well as cancer of the skin, bladder, lung, liver and prostate. Contrary to the earlier view that methylated compounds are innocuous, the methylated metabolites are now recognized to be both toxic and carcinogenic, possibly due to genotoxicity, inhibition of antioxidative enzyme functions, or other mechanisms. Arsenic inhibits indirectly sulfhydryl containing enzymes and interferes with cellular metabolism. Effects involve such phenomena as cytotoxicity, genotoxicity and inhibition of enzymes with antioxidant function. These are all related to nutritional factors directly or indirectly. Nutritional studies both in experimental and epidemiological studies provide convincing evidence that nutritional intervention, including chemoprevention, offers a pragmatic approach to mitigate the health effects of arsenic exposure, particularly cancer, in the relatively resource-poor developing countries. Nutritional intervention, especially with micronutrients, many of which are antioxidants and share the same pathway with Arsenic , appears a host defence against the health effects of arsenic contamination in developing countries and should be embraced as it is pragmatic and inexpensive. (PMID: 17477765 , 17179408 ).
Arsenic blackHMDB
Arsenic elementalHMDB
Grey arsenicHMDB
Metallic arsenicHMDB
Chemical FormulaAs
Average Molecular Weight74.9216
Monoisotopic Molecular Weight74.921596417
IUPAC Namearsenic(3+) ion
Traditional Namearsenic(3+) ion
CAS Registry Number7440-38-2
InChI Identifier
Chemical Taxonomy
DescriptionThis compound belongs to the class of chemical entities known as homogeneous metalloid compounds. These are inorganic compounds containing only metal atoms,with the largest atom being a metalloid atom.
KingdomChemical entities
Super ClassInorganic compounds
ClassHomogeneous metal compounds
Sub ClassHomogeneous metalloid compounds
Direct ParentHomogeneous metalloid compounds
Alternative ParentsNot Available
  • Homogeneous metalloid
Molecular FrameworkNot Available
External Descriptors
StatusDetected and Quantified
  • Endogenous
  • Osmolyte, enzyme cofactor, signalling
ApplicationNot Available
Cellular locationsNot Available
Physical Properties
Experimental Properties
Melting Point> 615 °CNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Predicted Properties
Physiological Charge3ChemAxon
Hydrogen Acceptor Count0ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area0 Å2ChemAxon
Rotatable Bond Count0ChemAxon
Refractivity0 m3·mol-1ChemAxon
Polarizability1.78 Å3ChemAxon
Number of Rings0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, PositiveNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, NegativeNot Available
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, NegativeNot Available
Biological Properties
Cellular LocationsNot Available
Biofluid Locations
  • Blood
  • Cerebrospinal Fluid (CSF)
  • Saliva
  • Urine
Tissue LocationNot Available
PathwaysNot Available
Normal Concentrations
BloodDetected and Quantified0.0143 +/- 0.006 uMAdult (>18 years old)BothNormal
    • Geigy Scientific ...
BloodDetected and Quantified0.01161(0.00761-0.01615) uMNot AvailableBothNormal
    • Report on Human B...
BloodDetected and Quantified0.02109(0.01281-0.03123) uMAdult (>18 years old)BothNormal
    • Report on Human B...
Cerebrospinal Fluid (CSF)Detected and Quantified0.106 +/- 0.010 uMAdult (>18 years old)Not SpecifiedNormal details
Cerebrospinal Fluid (CSF)Detected and Quantified0.003 +/- 0.002 uMAdult (>18 years old)BothNormal details
SalivaDetected and Quantified0.057 +/- 0.019 uMAdult (>18 years old)BothNormal
    • Zerihun T. Dame, ...
UrineDetected and Quantified0.10 (0.01-0.52) umol/mmol creatinineAdult (>18 years old)Both
UrineDetected and Quantified0.16 +/- 0.16 umol/mmol creatinineAdult (>18 years old)BothNormal
    • Geigy Scientific ...
    • West Cadwell, N.J...
    • Basel, Switzerlan...
UrineDetected and Quantified0.0164 (0.0147-0.0181) umol/mmol creatinineAdult (>18 years old)Not SpecifiedNormal details
UrineDetected and Quantified0.0124 (0.00993-0.0155) umol/mmol creatinineChildren (1-13 years old)Not SpecifiedNormal details
UrineDetected and Quantified0.03124 (0.01071-0.04859) umol/mmol creatinineNot AvailableBothNormal
    • Report on Human B...
UrineDetected and Quantified0.04120 (0.02611-0.06851) umol/mmol creatinineAdult (>18 years old)BothNormal
    • Report on Human B...
Abnormal Concentrations
BloodDetected and Quantified>0.12 uMAdult (>18 years old)BothChronic arsenic poisoning details
BloodDetected and Quantified>5 uMAdult (>18 years old)BothAcute arsenic poisoning details
UrineDetected and Quantified1.75 (0.69-3.00) umol/mmol creatinineAdult (>18 years old)BothChronic arsenic poisoning details
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDNot Available
DrugBank Metabolite IDNot Available
Phenol Explorer Compound IDNot Available
Phenol Explorer Metabolite IDNot Available
FoodDB IDFDB003763
KNApSAcK IDNot Available
Chemspider ID94549
KEGG Compound IDC06269
BioCyc IDCPD-763
BiGG IDNot Available
Wikipedia LinkNot Available
NuGOwiki LinkHMDB02290
Metagene LinkHMDB02290
METLIN IDNot Available
PubChem Compound104734
PDB IDNot Available
ChEBI ID35828
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Download (PDF)
General References
  1. Anetor JI, Wanibuchi H, Fukushima S: Arsenic exposure and its health effects and risk of cancer in developing countries: micronutrients as host defence. Asian Pac J Cancer Prev. 2007 Jan-Mar;8(1):13-23. [17477765 ]
  2. Jones FT: A broad view of arsenic. Poult Sci. 2007 Jan;86(1):2-14. [17179408 ]


General function:
Involved in methyltransferase activity
Specific function:
Catalyzes the transfer of a methyl group from AdoMet to trivalent arsenicals producing methylated and dimethylated arsenicals. It methylates arsenite to form methylarsonate, Me-AsO(3)H(2), which is reduced by methylarsonate reductase to methylarsonite, Me-As(OH)2. Methylarsonite is also a substrate and it is converted into the much less toxic compound dimethylarsinate (cacodylate), Me(2)As(O)-OH (By similarity).
Gene Name:
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General function:
Involved in ATP binding
Specific function:
ATPase required for the post-translational delivery of tail-anchored (TA) proteins to the endoplasmic reticulum. Recognizes and selectively binds the transmembrane domain of TA proteins in the cytosol. This complex then targets to the endoplasmic reticulum by membrane-bound receptors, where the tail- anchored protein is released for insertion. This process is regulated by ATP binding and hydrolysis. ATP binding drives the homodimer towards the closed dimer state, facilitating recognition of newly synthesized TA membrane proteins. ATP hydolysis is required for insertion. Subsequently, the homodimer reverts towards the open dimer state, lowering its affinity for the membrane-bound receptor, and returning it to the cytosol to initiate a new round of targeting. May be involved in insulin signaling
Gene Name:
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