In:
Environmental Microbiology, Wiley, Vol. 17, No. 12 ( 2015-12), p. 4861-4872
Abstract:
How aromatic compounds are degraded in various anaerobic ecosystems (e.g. groundwater, sediments, soils and wastewater) is currently poorly understood. Under methanogenic conditions (i.e. groundwater and wastewater treatment), syntrophic metabolizers are known to play an important role. This study explored the draft genome of S yntrophorhabdus aromaticivorans strain UI and identified the first syntrophic phenol‐degrading phenylphosphate synthase ( PpsAB ) and phenylphosphate carboxylase ( PpcABCD ) and syntrophic terephthalate‐degrading decarboxylase complexes. The strain UI genome also encodes benzoate degradation through hydration of the dienoyl‐coenzyme A intermediate as observed in G eobacter metallireducens and S yntrophus aciditrophicus . Strain UI possesses electron transfer flavoproteins, hydrogenases and formate dehydrogenases essential for syntrophic metabolism. However, the biochemical mechanisms for electron transport between these H 2 /formate‐generating proteins and syntrophic substrate degradation remain unknown for many syntrophic metabolizers, including strain UI . Analysis of the strain UI genome revealed that heterodisulfide reductases ( HdrABC ), which are poorly understood electron transfer genes, may contribute to syntrophic H 2 and formate generation. The genome analysis further identified a putative ion‐translocating ferredoxin : NADH oxidoreductase ( IfoAB ) that may interact with HdrABC and dissimilatory sulfite reductase gamma subunit ( DsrC ) to perform novel electron transfer mechanisms associated with syntrophic metabolism.
Type of Medium:
Online Resource
ISSN:
1462-2912
,
1462-2920
DOI:
10.1111/emi.2015.17.issue-12
DOI:
10.1111/1462-2920.12444
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2020213-1
SSG:
12
