Abstract
Fervidobacterium islandicum AW-1 (KCTC 4680) is an extremely thermophilic anaerobe isolated from a hot spring in Indonesia. This bacterium could degrade native chicken feathers completely at 70 °C within 48 h, which is of potential importance on the basis of relevant environmental and agricultural issues in bioremediation and development of eco-friendly bioprocesses for the treatment of native feathers. However, its genomic and phylogenetic analysis remains unclear. Here, we report the high-quality draft genome sequence of an extremely thermophilic anaerobe, F. islandicum AW-1. The genome consists of 2,359,755 bp, which encodes 2,184 protein-coding genes and 64 RNA-encoding genes. This may reveal insights into anaerobic metabolism for keratin degradation and also provide a biological option for poultry waste treatments.
Highlights
Keratin, a key structural material in feathers, skin, hair, nails, horns, and scales, is one of the most abundant proteins on earth, and it is a mechanically durable and chemically unreactive protein
Morphological, physiological and 16S rRNA gene sequencing analyses demonstrated that this native chicken feather degrading bacterium belonging to the genus Fervidobacterium was identified as Fervidobacterium islandicum AW-1 [9]
We hypothesized that keratinolytic proteases and other enzymes specific to disulfide bonds might be mainly involved in degradation of keratin. These and related reasons led us to sequence the whole genome of F. islandicum AW-1, providing an insight into the degradation of nondigestible keratin biomass
Summary
A key structural material in feathers, skin, hair, nails, horns, and scales, is one of the most abundant proteins on earth, and it is a mechanically durable and chemically unreactive protein. Morphological, physiological and 16S rRNA gene sequencing analyses demonstrated that this native chicken feather degrading bacterium belonging to the genus Fervidobacterium was identified as Fervidobacterium islandicum AW-1 [9]. These and related reasons led us to sequence the whole genome of F. islandicum AW-1, providing an insight into the degradation of nondigestible keratin biomass.
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