Record Information
Version2.0
Creation Date2015-06-04 15:17:12 -0600
Update Date2015-08-05 16:22:04 -0600
Secondary Accession Numbers
  • ECMDB23788
Identification
Name:Selenate
DescriptionA divalent inorganic anion obtained by removal of both protons from selenic acid
Structure
Thumb
Synonyms:
  • H2SEO4
  • Selenate
  • Selenic acid
  • [SeO2(OH)2]
Chemical Formula:H2O4Se
Weight:Average: 144.97
Monoisotopic: 145.91183038
InChI Key:QYHFIVBSNOWOCQ-UHFFFAOYSA-N
InChI:InChI=1S/H2O4Se/c1-5(2,3)4/h(H2,1,2,3,4)
CAS number:7783-08-6
IUPAC Name:selenic acid
Traditional IUPAC Name:selenic acid
SMILES:O[Se](O)(=O)=O
Chemical Taxonomy
Description belongs to the class of inorganic compounds known as non-metal selenates. These are inorganic non-metallic compounds containing a selenate as its largest oxoanion.
KingdomInorganic compounds
Super ClassMixed metal/non-metal compounds
ClassOther mixed metal/non-metal oxoanionic compounds
Sub ClassNon-metal selenates
Direct ParentNon-metal selenates
Alternative Parents
Substituents
  • Non-metal selenate
  • Inorganic oxide
Molecular FrameworkNot Available
External Descriptors
Physical Properties
State:Not Available
Charge:-2
Melting point:Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
logP-1.6ChemAxon
pKa (Strongest Acidic)-3.8ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area74.6 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity21.13 m³·mol⁻¹ChemAxon
Polarizability6.65 ųChemAxon
Number of Rings0ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Cytoplasm
Reactions:
SMPDB Pathways:
Selenium metabolismPW001894 ThumbThumb?image type=greyscaleThumb?image type=simple
inner membrane transportPW000786 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
EcoCyc Pathways:Not Available
Concentrations
Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-004i-0900000000-ccdf5bc6c2baca2f243eView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0002-0900000000-ce27aa482e96edc8d2c3View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0002-0900000000-a8b1c495851747f01491View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0002-1900000000-5aea84da45d6f46389b1View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0006-0900000000-b27e0c5103000de8e548View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0006-1900000000-5e615f49bdaf4a1a74a7View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-0006-0900000000-30844102eaffa8a1b188View in MoNA
References
References:Not Available
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Not Available
External Links:
ResourceLink
CHEBI ID18170
HMDB IDHMDB0062761
Pubchem Compound ID1089
Kegg IDC05697
ChemSpider IDNot Available
Wikipedia IDSelenic acid
BioCyc IDNot Available

Enzymes

General function:
Involved in oxidoreductase activity
Specific function:
The nitrate reductase enzyme complex allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The alpha chain is the actual site of nitrate reduction
Gene Name:
narG
Uniprot ID:
P09152
Molecular weight:
140489
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Involved in nitrate reductase activity
Specific function:
This is a second nitrate reductase enzyme which can substitute for the NRA enzyme and allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The gamma chain is a membrane-embedded heme-iron unit resembling cytochrome b, which transfers electrons from quinones to the beta subunit
Gene Name:
narV
Uniprot ID:
P0AF32
Molecular weight:
26018
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Involved in iron-sulfur cluster binding
Specific function:
The nitrate reductase enzyme complex allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The beta chain is an electron transfer unit containing four cysteine clusters involved in the formation of iron-sulfur centers. Electrons are transferred from the gamma chain to the molybdenum cofactor of the alpha subunit
Gene Name:
narH
Uniprot ID:
P11349
Molecular weight:
58066
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Involved in nitrate reductase activity
Specific function:
The nitrate reductase enzyme complex allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The gamma chain is a membrane-embedded heme-iron unit resembling cytochrome b, which transfers electrons from quinones to the beta subunit
Gene Name:
narI
Uniprot ID:
P11350
Molecular weight:
25497
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Involved in unfolded protein binding
Specific function:
Chaperone required for proper molybdenum cofactor insertion and final assembly of the membrane-bound respiratory nitrate reductase 2
Gene Name:
narW
Uniprot ID:
P19317
Molecular weight:
26160
General function:
Involved in iron-sulfur cluster binding
Specific function:
This is a second nitrate reductase enzyme which can substitute for the NRA enzyme and allows E.coli to use nitrate as an electron acceptor during anaerobic growth. The beta chain is an electron transfer unit containing four cysteine clusters involved in the formation of iron-sulfur centers. Electrons are transferred from the gamma chain to the molybdenum cofactor of the alpha subunit
Gene Name:
narY
Uniprot ID:
P19318
Molecular weight:
58557
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Involved in oxidoreductase activity
Specific function:
The alpha chain is the actual site of nitrate reduction
Gene Name:
narZ
Uniprot ID:
P19319
Molecular weight:
140226
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Involved in catalytic activity
Specific function:
ATP + sulfate = diphosphate + adenylyl sulfate
Gene Name:
cysD
Uniprot ID:
P21156
Molecular weight:
35188
Reactions
ATP + sulfate = diphosphate + adenylyl sulfate.
General function:
Involved in GTPase activity
Specific function:
May be the GTPase, regulating ATP sulfurylase activity
Gene Name:
cysN
Uniprot ID:
P23845
Molecular weight:
52558
Reactions
ATP + sulfate = diphosphate + adenylyl sulfate.
General function:
Involved in oxidoreductase activity
Specific function:
Catalytic subunit of the periplasmic nitrate reductase (NAP). Only expressed at high levels during aerobic growth. NapAB complex receives electrons from the membrane-anchored tetraheme protein napC, thus allowing electron flow between membrane and periplasm. Essential function for nitrate assimilation and may have a role in anaerobic metabolism
Gene Name:
napA
Uniprot ID:
P33937
Molecular weight:
93041
Reactions
Nitrite + acceptor = nitrate + reduced acceptor.
General function:
Energy production and conversion
Specific function:
Small subunit of the periplasmic nitrate reductase (NAP). Only expressed at high levels during aerobic growth. NapAB complex receives electrons from the membrane-anchored tetraheme napC protein, thus allowing electron flow between membrane and periplasm. Essential function for nitrate assimilation and may have a role in anaerobic metabolism
Gene Name:
napB
Uniprot ID:
P0ABL3
Molecular weight:
16297
General function:
Involved in unfolded protein binding
Specific function:
Chaperone required for proper molybdenum cofactor insertion and final assembly of the membrane-bound respiratory nitrate reductase 1. Required for the insertion of the molybdenum into the apo-NarG subunit, maybe by keeping NarG in an appropriate competent-open conformation for the molybdenum cofactor insertion to occur. NarJ maintains the apoNarGH complex in a soluble state. Upon insertion of the molybdenum cofactor, NarJ seems to dissociate from the activated soluble NarGH complex, before its association with the NarI subunit on the membrane
Gene Name:
narJ
Uniprot ID:
P0AF26
Molecular weight:
26449