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5SYH

Structure of D141A variant of B. pseudomallei KatG

Replaces:  4KA5
Summary for 5SYH
Entry DOI10.2210/pdb5syh/pdb
Related5L02 5L05 5SW4 5SW5 5SW6 5SX0 5SX1 5SX2 5SX3 5SX6 5SX7 5SXQ 5SXR 5SXS 5SXT 5SXX 5SYI 5SYJ 5SYK 5SYL 5SYU 5SYV 5SYW 5SYX 5SYY
DescriptorCatalase-peroxidase, PROTOPORPHYRIN IX CONTAINING FE, SODIUM ION, ... (8 entities in total)
Functional Keywordscatalase-peroxidase, katg, d141a variant, oxidoreductase
Biological sourceBurkholderia pseudomallei (strain 1710b)
Total number of polymer chains2
Total formula weight161126.45
Authors
Loewen, P.C. (deposition date: 2016-08-11, release date: 2016-09-07, Last modification date: 2023-11-15)
Primary citationLoewen, P.C.,Carpena, X.,Vidossich, P.,Fita, I.,Rovira, C.
An ionizable active-site tryptophan imparts catalase activity to a peroxidase core.
J. Am. Chem. Soc., 136:7249-7252, 2014
Cited by
PubMed Abstract: Catalase peroxidases (KatG's) are bifunctional heme proteins that can disproportionate hydrogen peroxide (catalatic reaction) despite their structural dissimilarity with monofunctional catalases. Using X-ray crystallography and QM/MM calculations, we demonstrate that the catalatic reaction of KatG's involves deprotonation of the active-site Trp, which plays a role similar to that of the distal His in monofunctional catalases. The interaction of a nearby mobile arginine with the distal Met-Tyr-Trp essential adduct (in/out) acts as an electronic switch, triggering deprotonation of the adduct Trp.
PubMed: 24785434
DOI: 10.1021/ja502794e
PDB entries with the same primary citation
Experimental method
X-RAY DIFFRACTION (1.65 Å)
Structure validation

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数据于2025-07-02公开中

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