• Thumbnail for Siroheme
    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
  • Thumbnail for Sirohaem 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
  • Thumbnail for Chlorophyll
    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) - 16:07, 12 July 2024
  • Thumbnail for Sirohydrochlorin ferrochelatase
    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
  • Thumbnail for Chlorophyll b
    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
  • Thumbnail for Vitamin B12
    latter is the first macrocyclic intermediate common to heme, chlorophyll, siroheme and B12 itself. Later steps, especially the incorporation of the additional...
    112 KB (12,246 words) - 16:28, 9 July 2024
  • Thumbnail for Porphyrin
    some use a usual chlorin ring) sirohydrochlorin (an isobacteriochlorin) siroheme iron Important cofactor in sulfur assimilation biosynthetic intermediate...
    25 KB (2,307 words) - 17:29, 21 February 2024
  • Thumbnail for Bacteriochlorophyll
    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
  • Thumbnail for Chlorophyll a
    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
  • Thumbnail for Sulfite reductase
    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
  • 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
  • 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
  • Thumbnail for Cofactor F430
    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
  • 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
  • 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
  • Thumbnail for Uroporphyrinogen III
    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
  • 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
  • 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
  • Thumbnail for Sirohydrochlorin
    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