Structural highlights
6zxx is a 3 chain structure with sequence from Nitratireductor pacificus pht-3B. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
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Method: | X-ray diffraction, Resolution 1.99Å |
Ligands: | , , , , , |
Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
K2MB66_9HYPH
Publication Abstract from PubMed
Reductive dehalogenases are responsible for the reductive cleavage of carbon-halogen bonds during organohalide respiration. A variety of mechanisms have been proposed for these cobalamin and [4Fe-4S] containing enzymes, including organocobalt, radical, or cobalt-halide adduct based catalysis. The latter was proposed for the oxygen-tolerant Nitratireductor pacificus pht-3B catabolic reductive dehalogenase (NpRdhA). Here, we present the first substrate bound NpRdhA crystal structures, confirming a direct cobalt-halogen interaction is established and providing a rationale for substrate preference. Product formation is observed in crystallo due to X-ray photoreduction. Protein engineering enables rational alteration of substrate preference, providing a future blue print for the application of this and related enzymes in bioremediation.
Catabolic Reductive Dehalogenase Substrate Complex Structures Underpin Rational Repurposing of Substrate Scope.,Halliwell T, Fisher K, Payne KAP, Rigby SEJ, Leys D Microorganisms. 2020 Sep 2;8(9). pii: microorganisms8091344. doi:, 10.3390/microorganisms8091344. PMID:32887524[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Halliwell T, Fisher K, Payne KAP, Rigby SEJ, Leys D. Catabolic Reductive Dehalogenase Substrate Complex Structures Underpin Rational Repurposing of Substrate Scope. Microorganisms. 2020 Sep 2;8(9):1344. PMID:32887524 doi:10.3390/microorganisms8091344