Enzymes
| UniProtKB help_outline | 9,015 proteins |
| Enzyme class help_outline |
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Reaction participants Show >> << Hide
- Name help_outline chlorophyllide a Identifier CHEBI:83348 Charge -2 Formula C35H32MgN4O5 InChIKeyhelp_outline IZOAGQOHKWGYKF-PVMVIUQGSA-K SMILEShelp_outline CCC1=C(C)C2=[N+]3C1=Cc1c(C)c4C(=O)[C-](C(=O)OC)C5=C6[C@@H](CCC([O-])=O)[C@H](C)C7=[N+]6[Mg--]3(n1c45)n1c(=C7)c(C)c(C=C)c1=C2 2D coordinates Mol file for the small molecule Search links Involved in 13 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
oxidized 2[4Fe-4S]-[ferredoxin]
Identifier
RHEA-COMP:10004
Reactive part
help_outline
- Name help_outline [4Fe-4S]2+ cluster Identifier CHEBI:33722 Charge 2 Formula Fe4S4 InChIKeyhelp_outline YEAYMLBNRJYVPB-UHFFFAOYSA-N Positionhelp_outline 1 SMILEShelp_outline [S]12[Fe]3[S]4[Fe]1[S]1[Fe+]2[S]3[Fe+]41 2D coordinates Mol file for the small molecule Search links Involved in 25 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline [4Fe-4S]2+ cluster Identifier CHEBI:33722 Charge 2 Formula Fe4S4 InChIKeyhelp_outline YEAYMLBNRJYVPB-UHFFFAOYSA-N Positionhelp_outline 2 SMILEShelp_outline [S]12[Fe]3[S]4[Fe]1[S]1[Fe+]2[S]3[Fe+]41 2D coordinates Mol file for the small molecule Search links Involved in 25 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ADP Identifier CHEBI:456216 (Beilstein: 3783669) help_outline Charge -3 Formula C10H12N5O10P2 InChIKeyhelp_outline XTWYTFMLZFPYCI-KQYNXXCUSA-K SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 854 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline phosphate Identifier CHEBI:43474 Charge -2 Formula HO4P InChIKeyhelp_outline NBIIXXVUZAFLBC-UHFFFAOYSA-L SMILEShelp_outline OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 1,020 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline protochlorophyllide a Identifier CHEBI:83350 Charge -2 Formula C35H30MgN4O5 InChIKeyhelp_outline SSIKFLKOTZKJAG-UAVVDGTISA-K SMILEShelp_outline CCC1=C(C)C2=[N+]3C1=Cc1c(C)c4C(=O)[C-](C(=O)OC)C5=C6C(CCC([O-])=O)=C(C)C7=[N+]6[Mg--]3(n1c45)n1c(=C7)c(C)c(C=C)c1=C2 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
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Namehelp_outline
reduced 2[4Fe-4S]-[ferredoxin]
Identifier
RHEA-COMP:10002
Reactive part
help_outline
- Name help_outline [4Fe-4S]1+ cluster Identifier CHEBI:33723 Charge 1 Formula Fe4S4 InChIKeyhelp_outline ISVAEKDKOPJTJN-UHFFFAOYSA-N Positionhelp_outline 1 SMILEShelp_outline [S]12[Fe]3[S]4[Fe]1[S]1[Fe]2[S]3[Fe+]41 2D coordinates Mol file for the small molecule Search links Involved in 25 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline [4Fe-4S]1+ cluster Identifier CHEBI:33723 Charge 1 Formula Fe4S4 InChIKeyhelp_outline ISVAEKDKOPJTJN-UHFFFAOYSA-N Positionhelp_outline 2 SMILEShelp_outline [S]12[Fe]3[S]4[Fe]1[S]1[Fe]2[S]3[Fe+]41 2D coordinates Mol file for the small molecule Search links Involved in 25 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ATP Identifier CHEBI:30616 (Beilstein: 3581767) help_outline Charge -4 Formula C10H12N5O13P3 InChIKeyhelp_outline ZKHQWZAMYRWXGA-KQYNXXCUSA-J SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,301 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,337 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:28202 | RHEA:28203 | RHEA:28204 | RHEA:28205 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Identification of a nifDK-like gene (ORF467) involved in the biosynthesis of chlorophyll in the cyanobacterium Plectonema boryanum.
Fujita Y., Matsumoto H., Takahashi Y., Matsubara H.
The frxC gene, which is found in chloroplast DNA (ctDNA) and in cyanobacteria, encodes a protein that is required for the light-independent reduction of protochlorophyllide (Pchlide) to chlorophyllide a (Chlide). A DNA fragment downstream of frxC in the filamentous cyanobacterium Plectonema boryan ... >> More
The frxC gene, which is found in chloroplast DNA (ctDNA) and in cyanobacteria, encodes a protein that is required for the light-independent reduction of protochlorophyllide (Pchlide) to chlorophyllide a (Chlide). A DNA fragment downstream of frxC in the filamentous cyanobacterium Plectonema boryanum was cloned and analyzed. Sequencing of the DNA fragment revealed an open reading frame (ORF) that encoded a protein of 467 amino acid residues (designated ORF467), which showed extensive homology to the proteins encoded by genes on ctDNAs (ORF465 in liverwort, gidA in pine and chlN in Chlamydomonas reinhardtii) and to ORF469 protein of the cyanobacterium Synechocystis sp. strain PCC 6803. We isolated a targeted mutant YFM6D-3 in which ORF467 was inactivated by the insertion of a kanamycin-resistance gene into the coding region. YFM6D-3 exhibited a phenotype similar to that of YFC1004, an frxC-disrupted mutant, which did not synthesize chlorophyll (Chl) and accumulated Pchlide, a precursor to Chl, in the dark. These phenotypic characteristics of YFM6D-3 indicate that the light-independent reduction of Pchlide requires not only the FrxC protein but also the ORF467 protein. The amino acid sequences of the homologues of ORF467 exhibit low but significant similarity to those of the alpha and beta subunits of nitrogenase MoFe-protein, suggesting a phylogenetic relationship between the light-independent Pchlide reductase and nitrogenase, as is observed between the FrxC protein and the Fe-protein of nitrogenase. << Less
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NB-protein (BchN-BchB) of dark-operative protochlorophyllide reductase is the catalytic component containing oxygen-tolerant Fe-S clusters.
Nomata J., Ogawa T., Kitashima M., Inoue K., Fujita Y.
Dark-operative protochlorophyllide (Pchlide) oxidoreductase is a nitrogenase-like enzyme consisting of the two components, L-protein (BchL-dimer) and NB-protein (BchN-BchB-heterotetramer). Here, we show that NB-protein is the catalytic component with Fe-S clusters. NB-protein purified from Rhodoba ... >> More
Dark-operative protochlorophyllide (Pchlide) oxidoreductase is a nitrogenase-like enzyme consisting of the two components, L-protein (BchL-dimer) and NB-protein (BchN-BchB-heterotetramer). Here, we show that NB-protein is the catalytic component with Fe-S clusters. NB-protein purified from Rhodobacter capsulatus bound Pchlide that was readily converted to chlorophyllide a upon the addition of L-protein and Mg-ATP. The activity of NB-protein was resistant to the exposure to air. A Pchlide-free form of NB-protein purified from a bchH-lacking mutant showed an absorption spectrum suggesting the presence of Fe-S centers. Together with the Fe and sulfide contents, these findings suggested that NB-protein carries two oxygen-tolerant [4Fe-4S] clusters. << Less