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IPR011771 is a Magnesium-chelatase, subunit H.
<p>This entry represents the H subunit of the magnesium chelatase complex responsible for magnesium insertion into the protoporphyrin IX ring in the biosynthesis of both chlorophyll and bacteriochlorophyll. In chlorophyll-utilizing species, this gene is known as ChlH, while in bacteriochlorophyll-utilizing spoecies it is called BchH. Subunit H is the largest (~140kDa) of the three subunits (the others being BchD/ChlD and BchI/ChlI), and is known to bind protoporphyrin IX. Subunit H is homologous to the CobN subunit of cobaltochelatase and by anology with that enzyme, subunit H is believed to also bind the magnesium ion which is inserted into the ring. In conjunction with the hydrolysis of ATP by subunits I and D, a conformation change is believed to happen in subunit H causing the magnesium ion insertion into the distorted protoporphyrin ring [[cite:PUB00015452]].</p>
This description is obtained from EB-eye REST.
GO predictions are based solely on the InterPro-to-GO mappings published by EMBL-EBI, which are in turn based on the mapping of predicted domains to the InterPro dataset. The InterPro-to-GO mapping was last updated on , while the GO metadata was last updated on .
| GO term | Namespace | Name | Definition | Relationships |
|---|---|---|---|---|
| Biological process | Chlorophyll biosynthetic process | The chemical reactions and pathways resulting in the formation of chlorophyll, any compound of magnesium complexed in a porphyrin (tetrapyrrole) ring and which functions as a photosynthetic pigment, from less complex precursors. | ||
| Molecular function | Magnesium chelatase activity | Catalysis of the reaction: ATP + H(2)O + Mg(2+) + protoporphyrin IX = ADP + 2 H(+) + magnesium protoporphyrin IX + phosphate. |
| Transcript | Name | Description | Predicted domains | Domain count |
|---|---|---|---|---|
| – | Magnesium chelatase subunit [Glycine max] gi|351726696|ref|NP_001237903.1| | 10 | ||
| – | Magnesium-chelatase subunit H; TAIR: AT5G13630.1 magnesium-chelatase subunit chlH, chloroplast, putative / Mg-protoporphyrin IX chelatase, putative (CHLH); Swiss-Prot: sp|Q9FNB0|CHLH_ARATH Magnesium-chelatase subunit ChlH, chloroplastic; TrEMBL-Plants: tr|I1N906|I1N906_SOYBN Uncharacterized protein; Found in the gene: LotjaGi1g1v0673100 | 9 | ||
| – | Magnesium-chelatase subunit H; TAIR: AT5G13630.1 magnesium-chelatase subunit chlH, chloroplast, putative / Mg-protoporphyrin IX chelatase, putative (CHLH); Swiss-Prot: sp|Q9FNB0|CHLH_ARATH Magnesium-chelatase subunit ChlH, chloroplastic; TrEMBL-Plants: tr|I1N906|I1N906_SOYBN Uncharacterized protein; Found in the gene: LotjaGi1g1v0673100 | 9 | ||
| – | Magnesium-chelatase subunit H; TAIR: AT5G13630.1 magnesium-chelatase subunit chlH, chloroplast, putative / Mg-protoporphyrin IX chelatase, putative (CHLH); Swiss-Prot: sp|Q9FNB0|CHLH_ARATH Magnesium-chelatase subunit ChlH, chloroplastic; TrEMBL-Plants: tr|O65808|O65808_SOYBN Magnesium chelatase subunit; Found in the gene: LotjaGi1g1v0673100 | 8 | ||
| – | Magnesium-chelatase subunit H; TAIR: AT5G13630.1 magnesium-chelatase subunit chlH, chloroplast, putative / Mg-protoporphyrin IX chelatase, putative (CHLH); Swiss-Prot: sp|Q9FNB0|CHLH_ARATH Magnesium-chelatase subunit ChlH, chloroplastic; TrEMBL-Plants: tr|I1N906|I1N906_SOYBN Uncharacterized protein; Found in the gene: LotjaGi1g1v0673100 | 9 |
A list of co-occurring predicted domains within the L. japonicus gene space:
| Predicted domain | Source | Observations | Saturation (%) |
|---|---|---|---|
| cd10150 | CDD | 1 | 20.00 |