Siroheme (or sirohaem) is a heme-like prosthetic group at the active sites of some enzymes to accomplish the six-electron reduction of sulfur and nitrogen...
3 KB (271 words) - 16:17, 29 September 2023
synthesised along a branched biosynthetic pathway that is shared with heme and siroheme. Chlorophyll synthase is the enzyme that completes the biosynthesis of...
35 KB (3,529 words) - 22:28, 16 September 2024
Sirohaem synthase (redirect from Siroheme synthase)
In molecular biology, sirohaem synthase (or siroheme synthase) (CysG) is a multi-functional enzyme with S-adenosyl-L-methionine (SAM)-dependent bismethyltransferase...
2 KB (184 words) - 18:27, 23 December 2020
intermediate in the biosynthesis of heme, chlorophyll, vitamin B12, and siroheme. It is a colorless compound, like other porphyrinogens. The molecular structure...
4 KB (363 words) - 05:19, 3 March 2024
sirohydrochlorin ferrochelatase (EC 4.99.1.4) catalyzes the following reaction: siroheme + 2H+ ⇌ {\displaystyle \rightleftharpoons } sirohydrochlorin + Fe2+ This...
4 KB (457 words) - 15:50, 26 August 2023
and is synthesised along a branched pathway that is shared with heme and siroheme. The initial steps incorporate glutamic acid into 5-aminolevulinic acid...
8 KB (525 words) - 09:22, 12 August 2023
and is synthesised along a branched pathway that is shared with heme and siroheme. The initial steps incorporate glutamic acid into 5-aminolevulinic acid...
19 KB (1,559 words) - 12:01, 28 February 2024
employs two covalently coupled cofactors - an iron sulfur cluster and a siroheme - which the deliver electrons to the substrate via this coupling. The systematic...
6 KB (603 words) - 13:01, 22 April 2024
some use a usual chlorin ring) sirohydrochlorin (an isobacteriochlorin) siroheme iron Important cofactor in sulfur assimilation biosynthetic intermediate...
25 KB (2,304 words) - 16:20, 3 August 2024
uroporphyrinogen III in a separate pathway that leads, for example, to siroheme, cofactor F430 and cobalamin. The common intermediate is sirohydrochlorin...
10 KB (728 words) - 11:50, 27 December 2023
latter is the first macrocyclic intermediate common to heme, chlorophyll, siroheme and B12 itself. Later steps, especially the incorporation of the additional...
112 KB (12,248 words) - 12:43, 27 September 2024
Nitrite reductase (NAD(P)H) (category Siroheme enzymes)
participates in nitrogen metabolism. It has 3 cofactors: FAD, Iron, and Siroheme. As of late 2007, only one structure has been solved for this class of...
4 KB (332 words) - 15:11, 26 August 2023
Sirohydrochlorin ferrochelatase an enzyme that catalyzes insertion of iron to form siroheme. Sirohydrochlorin cobaltochelatase an enzyme that catalyzes insertion of...
5 KB (426 words) - 12:26, 24 January 2024
1021/bi100781f. PMID 20822098. Schedel M, Vanselow M, Trüper HG (1979). "Siroheme sulfite reductase isolated from Chromatium vinosum. Purification and investigation...
4 KB (512 words) - 23:53, 6 April 2024
Ferredoxin—nitrite reductase (category Siroheme enzymes)
nitrogen metabolism and nitrogen assimilation. It has 3 cofactors: iron, Siroheme, and Iron-sulfur. This enzyme can use many different isoforms of ferredoxin...
3 KB (313 words) - 14:02, 26 August 2023
natural tetrapyrroles, including chlorophyll, vitamin B12, phycobilins, siroheme, heme, and heme d1. It is converted to sirohydrochlorin via dihydrosirohydrochlorin...
10 KB (903 words) - 19:19, 23 September 2023
that the enzyme is multimeric and contains iron in the form of Fe4S4 and siroheme. Cytochrome c3 isolated from D. gigas is dimeric with four heme groups...
41 KB (4,122 words) - 16:45, 16 May 2024
synthase * EC 4.1.1.110: bisphosphomevalonate decarboxylase * EC 4.1.1.111: siroheme decarboxylase * EC 4.1.1.112: oxaloacetate decarboxylase * EC 4.1.1.113:...
62 KB (7,931 words) - 19:04, 4 January 2024
Hydrogensulfite reductase (category Siroheme enzymes)
trithionate:(acceptor) oxidoreductase. It has 4 cofactors: iron, sulfur, siroheme, and iron-sulfur. Hatchikian EC, Zeikus JG (1983). "Characterization of...
2 KB (210 words) - 14:29, 26 August 2023
chromosome 2 (NC_011988) αr14 gene Avi_5891 R 901178 902659 YP_002547647.1 siroheme synthase Agrobacterium vitis S4 chromosome 2 (NC_011988) αr14 gene Avi_9007...
158 KB (2,402 words) - 21:30, 28 March 2024