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Case Reports
. 2017 Dec 2:12:69.
doi: 10.1186/s40793-017-0284-9. eCollection 2017.

High-quality draft genome sequence of Aquidulcibacter paucihalophilus TH1-2T isolated from cyanobacterial aggregates in a eutrophic lake

Haiyuan Cai  1 , Yonghui Zeng  2
Affiliations
Case Reports

High-quality draft genome sequence of Aquidulcibacter paucihalophilus TH1-2T isolated from cyanobacterial aggregates in a eutrophic lake

Haiyuan Cai et al. Stand Genomic Sci. .

Abstract

Aquidulcibacter paucihalophilus TH1-2T is a member of the family Caulobacteraceae within Alphaproteobacteria isolated from cyanobacterial aggregates in a eutrophic lake. The draft genome comprises 3,711,627 bp and 3489 predicted protein-coding genes. The genome of strain TH1-2T has 270 genes encoding peptidases. And metallo and serine peptidases were found most frequently. A high number of genes encoding carbohydrate active enzymes (141 CAZymes) also present in strain TH1-2T genome. Among CAZymes, 47 glycoside hydrolase families, 37 glycosyl transferase families, 38 carbohydrate esterases families, nine auxiliary activities families, seven carbohydrate-binding modules families, and three polysaccharide lyases families were identified. Accordingly, strain TH1-2T has a high number of transporters (91), the dominated ones are ATP-binding cassette transporters (61) and TonB-dependent transporters (28). Major TBDTs are Group I, which consisted of transporters for various types of dissolved organic matter. These genome features indicate adaption to cyanobacterial aggregates microenvironments.

Keywords: Aquidulcibacter paucihalophilus; Carbohydrate active enzyme; Cyanobacterial aggregates; Peptidase; Transporter.

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Figures

Fig. 1
Fig. 1
The 16S rRNA tree highlighting the position of A. paucihalophilus TH1–2T relative to the representatives of the order Caulobacterales including the families Caulobacteraceae and Hyphomonadaceae. Maximum likelihood (substitution model = GTR) tree, using 1406 aligned characters, was rooted by Bartonella schoenbuchii R1. Branches were scaled in terms of the expected number of substitutions per site. Numbers adjacent to branches are support values from 1000 ML bootstrap replicates (left) and from 1000 maximum-parsimony bootstrap replicates (right); values below 50% were neglected
Fig. 2
Fig. 2
Images of A. paucihalophilus TH1–2T using transmission electron micrograph
See this image and copyright information in PMC

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