Record Information
Version2.0
Creation Date2015-09-08 17:50:26 -0600
Update Date2015-09-14 16:46:06 -0600
Secondary Accession Numbers
  • ECMDB24252
Identification
Name:ferroheme b
DescriptionFerroheme b or heme B (also known as protoheme IX) is the most abundant heme in nature. E. coli is known to produce 4 different hemes: protoheme IX (heme B), heme C, heme D, and siroheme. A heme or haem is a prosthetic group that consists of an iron atom contained in the center of a large heterocyclic organic ring called a porphyrin. Not all porphyrins contain iron, but a substantial fraction of porphyrin-containing metalloproteins have heme as their prosthetic subunit; these are known as hemoproteins. Generally, heme B is attached to the surrounding protein matrix (known as the apoprotein) through a single coordination bond between the heme iron and an amino-acid side-chain. When oxygen is bound the iron becomes hexacoordinated. Since the iron in heme B containing proteins is bound to the four nitrogens of the porphyrin (forming a plane) and a single electron donating atom of the protein, the iron is often in a pentacoordinate state.
Structure
Thumb
Synonyms:Not Available
Chemical Formula:C34H30FeN4O4
Weight:Average: 614.485
Monoisotopic: 614.163836
InChI Key:RNQMHXMGXVQRMV-RGGAHWMASA-J
InChI:InChI=1S/C34H34N4O4.Fe/c1-7-21-17(3)25-13-26-19(5)23(9-11-33(39)40)31(37-26)16-32-24(10-12-34(41)42)20(6)28(38-32)15-30-22(8-2)18(4)27(36-30)14-29(21)35-25;/h7-8,13-16H,1-2,9-12H2,3-6H3,(H4,35,36,37,38,39,40,41,42);/p-4/b25-13-,26-13-,27-14-,28-15-,29-14-,30-15-,31-16-,32-16-;
CAS number:Not Available
IUPAC Name:5,9-bis(2-carboxylatoethyl)-14,19-diethenyl-4,10,15,20-tetramethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1,3(24),4,6,8(23),9,11,13,15,17,19-undecaene-21,22-diide iron
Traditional IUPAC Name:5,9-bis(2-carboxylatoethyl)-14,19-diethenyl-4,10,15,20-tetramethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1,3(24),4,6,8(23),9,11,13,15,17,19-undecaene-21,22-diide iron
SMILES:[Fe].CC1=C(CCC([O-])=O)C2=N\C\1=C/C1=C(C=C)C(C)=C([N-]1)\C=C1/[N-]\C(=C/C3=N/C(=C\2)/C(CCC([O-])=O)=C3C)C(C)=C1C=C
Chemical Taxonomy
ClassificationNot classified
Physical Properties
State:Not Available
Charge:-2
Melting point:Not Available
Experimental Properties:
PropertyValueSource
Predicted Properties
PropertyValueSource
Water Solubility0.053 g/LALOGPS
logP4.05ALOGPS
logP6.85ChemAxon
logS-4.1ALOGPS
pKa (Strongest Acidic)3.52ChemAxon
pKa (Strongest Basic)4.94ChemAxon
Physiological Charge-2ChemAxon
Hydrogen Acceptor Count8ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area131.82 ŲChemAxon
Rotatable Bond Count8ChemAxon
Refractivity186.71 m³·mol⁻¹ChemAxon
Polarizability64.32 ųChemAxon
Number of Rings5ChemAxon
Bioavailability0ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleYesChemAxon
Biological Properties
Cellular Locations:Membrane
Reactions:
SMPDB Pathways:
Oxidative phosphorylationPW000919 ThumbThumb?image type=greyscaleThumb?image type=simple
Phenylalanine metabolismPW000921 ThumbThumb?image type=greyscaleThumb?image type=simple
Porphyrin metabolismPW000936 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cyclePW000779 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-0)PW002023 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-10)PW001010 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-2)PW001002 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-3)PW001003 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-4)PW001004 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-5)PW001005 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-6)PW001006 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-7)PW001007 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-8)PW001008 ThumbThumb?image type=greyscaleThumb?image type=simple
TCA cycle (ubiquinol-9)PW001009 ThumbThumb?image type=greyscaleThumb?image type=simple
pyruvate to cytochrome bd terminal oxidase electron transferPW002087 ThumbThumb?image type=greyscaleThumb?image type=simple
KEGG Pathways:
EcoCyc Pathways:Not Available
Concentrations
Not Available
Spectra
Spectra:
Spectrum TypeDescriptionSplash Key
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-014i-0000009000-0965983505b13997f5d8View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-014i-0000009000-0965983505b13997f5d8View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014i-0000009000-0965983505b13997f5d8View in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-03di-0000009000-c2a4b379666e8bdcbddfView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-03di-0000009000-c2a4b379666e8bdcbddfView in MoNA
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-03di-0000009000-c2a4b379666e8bdcbddfView in MoNA
References
References:Not Available
Synthesis Reference:Not Available
Material Safety Data Sheet (MSDS)Not Available
External Links:
ResourceLink
CHEBI IDNot Available
HMDB IDNot Available
Pubchem Compound IDNot Available
Kegg IDNot Available
ChemSpider IDNot Available
Wikipedia IDNot Available
BioCyc IDNot Available

Enzymes

General function:
Involved in catalase activity
Specific function:
Decomposes hydrogen peroxide into water and oxygen; serves to protect cells from the toxic effects of hydrogen peroxide
Gene Name:
katE
Uniprot ID:
P21179
Molecular weight:
84162
Reactions
2 H(2)O(2) = O(2) + 2 H(2)O.
General function:
Involved in ferrochelatase activity
Specific function:
Catalyzes the ferrous insertion into protoporphyrin IX
Gene Name:
hemH
Uniprot ID:
P23871
Molecular weight:
35884
Reactions
Protoheme + 2 H(+) = protoporphyrin + Fe(2+).
General function:
Involved in protoheme IX farnesyltransferase activity
Specific function:
Converts heme B (protoheme IX) to heme O by substitution of the vinyl group on carbon 2 of heme B porphyrin ring with a hydroxyethyl farnesyl side group
Gene Name:
cyoE
Uniprot ID:
P0AEA5
Molecular weight:
32248