1mqf Summary

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PDB entry 1mqf (supersedes 2caf)

Compound I from Proteus mirabilis catalase

The structure was published by Andreoletti, P., Pernoud, A., Sainz, G., Gouet, P., and Jouve, H.M., in 2003 in a paper entitled "Structural studies of Proteus mirabilis catalase in its ground state, oxidized state and in complex with formic acid." (abstract).

This crystal structure was determined using X-ray diffraction at a resolution of 2.5 Å and deposited in 2002.

The experimental data on which the structure is based was also deposited.

The PDB entry contains the structure of Catalase. This molecule has the UniProt identifier P42321 (CATA_PROMI)search. The sample contained 484 residues which is 100% of the natural sequence. Out of 484 residues 476 were observed and are deposited in the PDB.

It also contains one or more heterogenic compounds (e.g., ligands, co-factors, ions, modified amino acids, etc.); see here for a complete list.

The molecule most likely forms homotetramers.

The following tables show cross-reference information to other databases (to obtain a list of all PDB entries sharing the same property or classification, click on the magnifying glass icon):


Chain Name UniProt Name of source organism % of UniProt sequence present in the sample Residues in the sample molecules % of residues observed
A Catalase P42321 (1-484) (CATA_PROMI)search Proteus mirabilissearch 100% 484 98%


This entry contains 1 unique UniProt protein:

UniProt accession Name Organism PDB
P42321 (1 - 484) Catalase Proteus mirabilis

Chain Structural classification (SCOP) Sequence family (Pfam)
A (P42321) Heme-dependent catalasessearch PF00199: Catalasesearch, PF06628: Catalase-related immune-responsivesearch

Chain ID Molecular function (GO) Biological process (GO) Cellular component (GO)
A (P42321) catalase activitysearch heme bindingsearch oxidoreductase activitysearch metal ion bindingsearch peroxidase activitysearch response to oxidative stresssearch oxidation-reduction processsearch hydrogen peroxide catabolic processsearch cytoplasmsearch

Chain InterPro annotation
A Catalase haem-binding sitesearch Catalase immune-responsive domainsearch Catalase core domainsearch Catalase, mono-functional, haem-containingsearch Catalase-like domainsearch Catalase active sitesearch Catalase, mono-functional, haem-containing, clades 1 and 3search