2.0 2012-05-31 14:31:55 -0600 2015-06-03 17:19:28 -0600 ECMDB20183 M2MDB001029 Precorrin 2 Precorrin 2 is a member of the chemical class known as Tetrapyrroles and Derivatives. These are polycyclic aromatic compounds containing four pyrrole rings joined by one-carbon units linking position 2 of one pyrrole ring to position 5 of the next. Precorrin 2 is invovled in Proto- and siroheme biosynthesis. Precorrin-2 is a precursor of both siroheme and B12. (PMID 8955319) 15,23-Dihydrosirohydrochlorin Dihydrosirohydrochlorin Precorrin-2 C42H46N4O16 862.8318 862.290881444 (4S,5S,9S,10S)-4,9,15,19-tetrakis(2-carboxyethyl)-5,10,14,20-tetrakis(carboxymethyl)-5,10-dimethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1(20),2,6(24),7,11(23),12,14,16(22),18-nonaen-22-ium-21-ide (4S,5S,9S,10S)-4,9,15,19-tetrakis(2-carboxyethyl)-5,10,14,20-tetrakis(carboxymethyl)-5,10-dimethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1(20),2,6(24),7,11(23),12,14,16(22),18-nonaen-22-ium-21-ide 82542-92-5 [H][C@@]1(CCC(O)=O)C2=CC3=C(CC(O)=O)C(CCC(O)=O)=C(CC4=[NH+]C(=CC5=NC(=CC(=N2)[C@@]1(C)CC(O)=O)[C@@]([H])(CCC(O)=O)[C@]5(C)CC(O)=O)C(CC(O)=O)=C4CCC(O)=O)[N-]3 InChI=1S/C42H46N4O16/c1-41(17-39(59)60)23(5-9-35(51)52)29-14-27-21(11-37(55)56)19(3-7-33(47)48)25(43-27)13-26-20(4-8-34(49)50)22(12-38(57)58)28(44-26)15-31-42(2,18-40(61)62)24(6-10-36(53)54)30(46-31)16-32(41)45-29/h14-16,23-24H,3-13,17-18H2,1-2H3,(H9,43,44,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62)/t23-,24-,41+,42+/m1/s1 KVFNZYKFDBWLHT-ZTKUHGNGSA-N Cytosol logp 1.04 ALOGPS logs -4.55 ALOGPS solubility 2.58e-02 g/l ALOGPS logp 1.57 ChemAxon pka_strongest_acidic 3.15 ChemAxon iupac (4S,5S,9S,10S)-4,9,15,19-tetrakis(2-carboxyethyl)-5,10,14,20-tetrakis(carboxymethyl)-5,10-dimethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1(20),2,6(24),7,11(23),12,14,16(22),18-nonaen-22-ium-21-ide ChemAxon average_mass 862.8318 ChemAxon mono_mass 862.290881444 ChemAxon smiles [H][C@@]1(CCC(O)=O)C2=CC3=C(CC(O)=O)C(CCC(O)=O)=C(CC4=[NH+]C(=CC5=NC(=CC(=N2)[C@@]1(C)CC(O)=O)[C@@]([H])(CCC(O)=O)[C@]5(C)CC(O)=O)C(CC(O)=O)=C4CCC(O)=O)[N-]3 ChemAxon formula C42H46N4O16 ChemAxon inchi InChI=1S/C42H46N4O16/c1-41(17-39(59)60)23(5-9-35(51)52)29-14-27-21(11-37(55)56)19(3-7-33(47)48)25(43-27)13-26-20(4-8-34(49)50)22(12-38(57)58)28(44-26)15-31-42(2,18-40(61)62)24(6-10-36(53)54)30(46-31)16-32(41)45-29/h14-16,23-24H,3-13,17-18H2,1-2H3,(H9,43,44,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62)/t23-,24-,41+,42+/m1/s1 ChemAxon inchikey KVFNZYKFDBWLHT-ZTKUHGNGSA-N ChemAxon polar_surface_area 349.98 ChemAxon refractivity 227.83 ChemAxon polarizability 86.93 ChemAxon rotatable_bond_count 20 ChemAxon acceptor_count 19 ChemAxon donor_count 9 ChemAxon physiological_charge -8 ChemAxon formal_charge 0 ChemAxon Porphyrin and chlorophyll metabolism ec00860 Metabolic pathways eco01100 Porphyrin metabolism The metabolism of porphyrin begins with with glutamic acid being processed by an ATP-driven glutamyl-tRNA synthetase by interacting with hydrogen ion and tRNA(Glu), resulting in amo, pyrophosphate and L-glutamyl-tRNA(Glu) Glutamic acid. Glutamic acid can be obtained as a result of L-glutamate metabolism pathway, glutamate / aspartate : H+ symporter GltP, glutamate:sodium symporter or a glutamate / aspartate ABC transporter . L-glutamyl-tRNA(Glu) Glutamic acid interacts with a NADPH glutamyl-tRNA reductase resulting in a NADP, a tRNA(Glu) and a (S)-4-amino-5-oxopentanoate. This compound interacts with a glutamate-1-semialdehyde aminotransferase resulting a 5-aminolevulinic acid. This compound interacts with a porphobilinogen synthase resulting in a hydrogen ion, water and porphobilinogen. The latter compound interacts with water resulting in hydroxymethylbilane synthase resulting in ammonium, and hydroxymethylbilane. Hydroxymethylbilane can either be dehydrated to produce uroporphyrinogen I or interact with a uroporphyrinogen III synthase resulting in a water molecule and a uroporphyrinogen III. Uroporphyrinogen I interacts with hydrogen ion through a uroporphyrinogen decarboxylase resulting in a carbon dioxide and a coproporphyrinogen I Uroporphyrinogen III can be metabolized into precorrin by interacting with a S-adenosylmethionine through a siroheme synthase resulting in hydrogen ion, an s-adenosylhomocysteine and a precorrin-1. On the other hand, Uroporphyrinogen III interacts with hydrogen ion through a uroporphyrinogen decarboxylase resulting in a carbon dioxide and a Coproporphyrinogen III. Precorrin-1 reacts with a S-adenosylmethionine through a siroheme synthase resulting in a S-adenosylhomocysteine and a Precorrin-2. The latter compound is processed by a NAD dependent uroporphyrin III C-methyltransferase [multifunctional] resulting in a NADH and a sirohydrochlorin. This compound then interacts with Fe 2+ uroporphyrin III C-methyltransferase [multifunctional] resulting in a hydrogen ion and a siroheme. The siroheme is then processed in sulfur metabolism pathway. Uroporphyrinogen III can be processed in anaerobic or aerobic condition. Anaerobic: Uroporphyrinogen III interacts with an oxygen molecule, a hydrogen ion through a coproporphyrinogen III oxidase resulting in water, carbon dioxide and protoporphyrinogen IX. The latter compound then interacts with an 3 oxygen molecule through a protoporphyrinogen oxidase resulting in 3 hydrogen peroxide and a Protoporphyrin IX Aerobic: Uroporphyrinogen III reacts with S-adenosylmethionine through a coproporphyrinogen III dehydrogenase resulting in carbon dioxide, 5-deoxyadenosine, L-methionine and protoporphyrinogen IX. The latter compound interacts with a meanquinone through a protoporphyrinogen oxidase resulting in protoporphyrin IX. The protoporphyrin IX interacts with Fe 2+ through a ferrochelatase resulting in a hydrogen ion and a ferroheme b. The ferroheme b can either be incorporated into the oxidative phosphorylation as a cofactor of the enzymes involved in that pathway or it can interact with hydrogen peroxide through a catalase HPII resulting in a heme D. Heme D can then be incorporated into the oxidative phosphyrlation pathway as a cofactor of the enzymes involved in that pathway. Ferroheme b can also interact with water and a farnesyl pyrophosphate through a heme O synthase resulting in a release of pyrophosphate and heme O. Heme O is then incorporated into the Oxidative phosphorylation pathway. PW000936 Metabolic siroheme biosynthesis PWY-5194 Specdb::NmrOneD 330942 Specdb::NmrOneD 330943 Specdb::NmrOneD 330944 Specdb::NmrOneD 330945 Specdb::NmrOneD 330946 Specdb::NmrOneD 330947 Specdb::NmrOneD 330948 Specdb::NmrOneD 330949 Specdb::NmrOneD 330950 Specdb::NmrOneD 330951 Specdb::NmrOneD 330952 Specdb::NmrOneD 330953 Specdb::NmrOneD 330954 Specdb::NmrOneD 330955 Specdb::NmrOneD 330956 Specdb::NmrOneD 330957 Specdb::NmrOneD 330958 Specdb::NmrOneD 330959 Specdb::NmrOneD 330960 Specdb::NmrOneD 330961 Specdb::MsMs 24665 Specdb::MsMs 24666 Specdb::MsMs 24667 Specdb::MsMs 31223 Specdb::MsMs 31224 Specdb::MsMs 31225 5280516 C02463 50602 DIHYDROSIROHYDROCHLORIN 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. 21097882 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. 22080510 van der Werf, M. J., Overkamp, K. M., Muilwijk, B., Coulier, L., Hankemeier, T. (2007). "Microbial metabolomics: toward a platform with full metabolome coverage." Anal Biochem 370:17-25. 17765195 Winder, C. L., Dunn, W. B., Schuler, S., Broadhurst, D., Jarvis, R., Stephens, G. M., Goodacre, R. (2008). "Global metabolic profiling of Escherichia coli cultures: an evaluation of methods for quenching and extraction of intracellular metabolites." Anal Chem 80:2939-2948. 18331064 Fazzio, T. G., Roth, J. R. (1996). "Evidence that the CysG protein catalyzes the first reaction specific to B12 synthesis in Salmonella typhimurium, insertion of cobalt." J Bacteriol 178:6952-6959. 8955319 Putative uroporphyrinogen-III C-methyltransferase P09127 HEMX_ECOLI hemX http://ecmdb.ca/proteins/P09127.xml Siroheme synthase P0AEA8 CYSG_ECOLI cysG http://ecmdb.ca/proteins/P0AEA8.xml 2 S-Adenosylmethionine + Uroporphyrinogen III >2 S-Adenosylhomocysteine + Precorrin 2 + Hydrogen ion R03194 Precorrin 2 + NAD > Hydrogen ion + NADH + Sirohydrochlorin R03947 DIMETHUROPORDEHYDROG-RXN 2 S-Adenosylmethionine + Uroporphyrinogen III <>2 S-Adenosylhomocysteine + Precorrin 2 R03194 Precorrin 2 + NAD <> Sirohydrochlorin + NADH + Hydrogen ion R03947 S-Adenosylmethionine + precorrin-1 > S-Adenosylhomocysteine + Precorrin 2 RXN-8675 2 S-Adenosylmethionine + Uroporphyrinogen III + Precorrin-1 <>2 S-Adenosylhomocysteine + Precorrin 2 R03194 Precorrin 2 + NAD <> Sirohydrochlorin + NADH +2 Hydrogen ion PW_R005872 2 S-Adenosylmethionine + Uroporphyrinogen III >2 S-Adenosylhomocysteine + Precorrin 2 + Hydrogen ion 2 S-Adenosylmethionine + Uroporphyrinogen III >2 S-Adenosylhomocysteine + Precorrin 2 + Hydrogen ion