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Modelling of the complex between subunits BchI and BchD of magnesium chelatase based on single-particle cryo-EM reconstruction at 7.5 ang

Source organism: Rhodobacter capsulatus
Biochemical function: ATP hydrolysis activity
Biological process: bacteriochlorophyll biosynthetic process
Cellular component: not assigned

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EC 6.6.1.1: Magnesium chelatase

Reaction catalysed:
ATP + protoporphyrin IX + Mg(2+) + H(2)O = ADP + phosphate + Mg-protoporphyrin IX + 2 H(+)
Systematic name:
Mg-protoporphyrin IX magnesium-lyase
Alternative Name(s):
  • Magnesium-chelatase
  • Magnesium-protoporphyrin IX chelatase
  • Magnesium-protoporphyrin chelatase
  • Mg-chelatase
  • Mg-protoporphyrin IX chelatase
  • Mg-protoporphyrin IX magnesio-lyase
  • Protoporphyrin IX Mg-chelatase
  • Protoporphyrin IX magnesium-chelatase

GO terms

Sequence families

Pfam Protein families (Pfam)
PF17863
Domain description: AAA lid domain
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
The deposited structure of PDB entry 2x31 contains 6 copies of Pfam domain PF17863 (AAA lid domain) in Magnesium-chelatase 38 kDa subunit. Showing 1 copy in chain G.

PF01078
Domain description: Magnesium chelatase, subunit ChlI
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
The deposited structure of PDB entry 2x31 contains 6 copies of Pfam domain PF01078 (Magnesium chelatase, subunit ChlI) in Magnesium-chelatase 38 kDa subunit. Showing 1 copy in chain G.

PF13519
Domain description: von Willebrand factor type A domain
Occurring in:
  1. Magnesium-chelatase 60 kDa subunit
The deposited structure of PDB entry 2x31 contains 6 copies of Pfam domain PF13519 (von Willebrand factor type A domain) in Magnesium-chelatase 60 kDa subunit. Showing 1 copy in chain A.

InterPro InterPro annotations
IPR002035
Domain description: von Willebrand factor, type A
Occurring in:
  1. Magnesium-chelatase 60 kDa subunit
IPR027417
Domain description: P-loop containing nucleoside triphosphate hydrolase
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
IPR036465
Domain description: von Willebrand factor A-like domain superfamily
Occurring in:
  1. Magnesium-chelatase 60 kDa subunit
IPR041628
Domain description: ChlI/MoxR, AAA lid domain
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
IPR003593
Domain description: AAA+ ATPase domain
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
IPR000523
Domain description: Magnesium chelatase ChlI-like, catalytic domain
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
IPR011775
Domain description: Magnesium chelatase, ATPase subunit I
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit
IPR045006
Domain description: Magnesium-chelatase subunit ChlI-like
Occurring in:
  1. Magnesium-chelatase 38 kDa subunit

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