Draft Genome Sequence of the Beer Spoilage Bacterium Megasphaera cerevisiae Strain PAT 1 ^T

Abstract

The genus Megasphaera harbors important spoilage organisms that cause beer spoilage by producing off flavors, undesirable aroma, and turbidity. Megasphaera cerevisiae is mainly found in nonpasteurized low-alcohol beer. In this study, we report the draft genome of the type strain of the genus, M. cerevisiae strain PAT 1T.

Caproicibacter fermentans gen. nov., sp. nov., a new caproate-producing bacterium and emended description of the genus Caproiciproducens

“…The enzymes for the second cycle have not been described but are assumed to act in a way similar to the enzymes necessary for butyryl-CoA formation. The Rnf ( Rhodobacter n itrogen f ixation) complex, present in caproate-producing bacteria [13, 15–20], generates an electrochemical potential (ΔµH + or ΔµNa + ) from oxidation of reduced ferredoxin and reduction of oxidized NAD [21]. Subsequently, the electrochemical potential drives an F 0 F 1 -ATP synthase (ATPase) to form ATP by electron transport phosphorylation [22].…”

Genome Sequence of Megasphaera cerevisiae NSB1, a Bacterium Isolated from a Canning Line and Able To Grow in Beer with High Alcohol Content

“…M. cerevisiae NSB1 contains a complete suf operon (involved in iron homeostasis) and the manganese transporter MntH, as described for the genome-sequenced beer-spoilage strain M. cerevisiae PAT 1 T (DSM 20462 T ) ( 7 ). Unlike in PAT 1 T , the full arginine catabolism operon is not complete in M. cerevisiae NSB1.…”