1
|
Li L, Li S, Luo J, Chen T, Xi Q, Zhang Y, Sun J. The difference of intestinal microbiota composition between Lantang and Landrace newborn piglets. BMC Vet Res 2023; 19:174. [PMID: 37759242 PMCID: PMC10523759 DOI: 10.1186/s12917-023-03642-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 07/12/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND The early development of intestinal microbiota plays a fundamental role in host health and development. To investigate the difference in the intestinal microbial composition between Lantang and Landrace newborn piglets, we amplified and sequenced the V3-V4 region of 16 S rRNA gene in jejunal microbiota of Lantang and landrace newborn. RESULTS The findings revealed that the dominant phyla in the jejunum of Lantang piglets were Firmicutes, Actinobacteria and Bacteroidetes, while the dominant phyla of Landrace is Proteobacteria and Fusobacteria. Specifically, Corynebacterium_1, Lactobacillus, Rothia, Granulicatella, Corynebacteriales_unclassified, Corynebacterium, Globicatella and Actinomycetales_unclassified were found to be the dominant genera of Lantang group, while Clostridium_sensu_stricto_1, Escherichia-Shigella, Actinobacillus and Bifidobacterium were the dominant genera of Landrace. Based on the functional prediction of bacteria, we found that bacterial communities from Lantang samples had a significantly greater abundance pathways of fatty acid synthesis, protein synthesis, DNA replication, recombination, repair and material transport across membranes, while the carrier protein of pathogenic bacteria was more abundant in Landrace samples. CONCLUSIONS Overall, there was a tremendous difference in the early intestinal flora composition between Landang and Landrace piglets, which was related to the breed characteristics and may be one of the reasons affecting the growth characteristics. However, more further extensive studies should be included to reveal the underlying relationship between early intestinal flora composition in different breeds and pig growth characteristics.
Collapse
Affiliation(s)
- Ling Li
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Shuai Li
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Junyi Luo
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Ting Chen
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Qianyun Xi
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China
| | - Yongliang Zhang
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
| | - Jiajie Sun
- College of Animal Science, Guangdong Provincial Key Laboratory of Animal Nutrition Control, National Engineering Research Center for Breeding Swine Industry, South China Agricultural University, Guangzhou, Guangdong, 510642, China.
| |
Collapse
|
2
|
Zhai L, Xie J, Feng H, Sun S, Cheng K, Yao S. Mechanism of TonB-dependent transport system in Halomonas alkalicola CICC 11012s in response to alkaline stress. Extremophiles 2020; 25:39-49. [PMID: 33123748 DOI: 10.1007/s00792-020-01209-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 10/14/2020] [Indexed: 11/25/2022]
Abstract
Halomonas alkalicola CICC 11012s can grow at pH 12.5, the highest pH at which the organisms in the genus Halomonas can grow. Genomic analysis reveals that H. alkalicola adapts to alkaline stress using a variety of adaptive strategies; however, the detailed mechanism for its growth at high-alkaline conditions has not been elucidated. Therefore, in this study, the adaptations of H. alkalicola in response to extreme alkaline stress were investigated. A sharp decrease of alkaliphilic tolerance was observed in mutants E. coli ΔEctonB and H. alkalicola ΔHatonB. Expressions of the gene clusters encoding TonB-dependent transport system and iron complex transport system in H. alkalicola grown under extreme alkaline conditions were markedly up-regulated. We then compared the intracellular ionic iron content and iron-chelating ability of mutant strain with those of wild-type strain to understand the influence of TonB-dependent transport system on the alkaline responses. The results indicated that the presence of TonB-dependent transport system increased the alkaline tolerance of H. alkalicola grown at high-alkaline conditions, but had no effects when the strain was grown at neutral pH and low-alkaline conditions. Meanwhile, the presence of this system increased the transport and accumulation of ionic irons to maintain intracellular metabolic homeostasis, which in turn could increase the tolerance of the strain to extreme alkaline conditions. Based on the results, we established a model representing the interactions between TonB-dependent transport system, alkaline tolerance, and intracellular ionic iron that could help deepen the understanding of the alkaline response mechanism of alkaliphilic bacteria.
Collapse
Affiliation(s)
- Lei Zhai
- China Center of Industrial Culture Collection (CICC), China National Research Institute of Food and Fermentation Industries, Building 6, No. 24 Yard, Jiuxianqiao Middle Road, Chaoyang District, Beijing, China
| | - Jiuyan Xie
- China Center of Industrial Culture Collection (CICC), China National Research Institute of Food and Fermentation Industries, Building 6, No. 24 Yard, Jiuxianqiao Middle Road, Chaoyang District, Beijing, China
| | - Huijun Feng
- China Center of Industrial Culture Collection (CICC), China National Research Institute of Food and Fermentation Industries, Building 6, No. 24 Yard, Jiuxianqiao Middle Road, Chaoyang District, Beijing, China
| | - Sijia Sun
- China Center of Industrial Culture Collection (CICC), China National Research Institute of Food and Fermentation Industries, Building 6, No. 24 Yard, Jiuxianqiao Middle Road, Chaoyang District, Beijing, China
| | - Kun Cheng
- China Center of Industrial Culture Collection (CICC), China National Research Institute of Food and Fermentation Industries, Building 6, No. 24 Yard, Jiuxianqiao Middle Road, Chaoyang District, Beijing, China
| | - Su Yao
- China Center of Industrial Culture Collection (CICC), China National Research Institute of Food and Fermentation Industries, Building 6, No. 24 Yard, Jiuxianqiao Middle Road, Chaoyang District, Beijing, China.
| |
Collapse
|
3
|
Wang L, Zou Q, Yan M, Wang Y, Guo S, Zhang R, Song Y, Li X, Chen H, Shao L, Meng L, Jiang J. Polar or Charged Residues Located in Four Highly Conserved Motifs Play a Vital Role in the Function or pH Response of a UPF0118 Family Na +(Li +)/H + Antiporter. Front Microbiol 2020; 11:841. [PMID: 32457721 PMCID: PMC7221264 DOI: 10.3389/fmicb.2020.00841] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/08/2020] [Indexed: 01/15/2023] Open
Abstract
Functionally uncharacterized UPF0118 family has been re-designated as autoinducer-2 exporter (AI-2E) family since one of its members, Escherichia coli YdgG, was identified to function as an AI-2E. However, it's very likely that AI-2E family members may exhibit significantly distinct functions due to low identities between them. Recently, we identified one member of this family designated as UPF0118 to represent a novel class of Na+(Li+)/H+ antiporters. In this study, we presented that UPF0118, together with its homologs, should represent an independent group of AI-2E family, designated as Na+/H+ Antiporter Group. Notably, this group shows five highly conserved motifs designated as Motifs A to E, which are not detected in the majority of AI-2E family members. Functional analysis established that polar or charged residues located in Motif A to D play a vital role in Na+(Li+)/H+ antiport activity or pH response of UPF0118. However, three basic residues located in Motif E are not involved in the function of UPF0118, although the truncation of C terminus resulted in the non-expression of this transporter. Therefore, we propose that E179-R182-K215-Q217-D251-R292-R293-E296-K298-S30 7 located in Motifs A to D can be used for signature functional motifs to recognize whether AI-2E family members function as Na+(Li+)/H+ antiporters. Current findings positively contribute to the knowledge of molecular mechanism of Na+, Li+ transporting and pH response of UPF0118, and the functional prediction of uncharacterized AI-2E family members.
Collapse
Affiliation(s)
- Lidan Wang
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Qiao Zou
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Mingxue Yan
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Yuting Wang
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Sijia Guo
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Rui Zhang
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Yang Song
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Xiaofang Li
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Huiwen Chen
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Li Shao
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Lin Meng
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| | - Juquan Jiang
- Department of Microbiology and Biotechnology, College of Biological Sciences, Northeast Agricultural University, Harbin, China
| |
Collapse
|
4
|
Ming H, Ji WL, Li M, Zhao ZL, Cheng LJ, Niu MM, Zhang LY, Wang Y, Nie GX. Halomonas lactosivorans sp. nov., isolated from salt-lake sediment. Int J Syst Evol Microbiol 2020; 70:3504-3512. [DOI: 10.1099/ijsem.0.004209] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
A bacteria strain, designated CFH 90008T, was isolated from a salt lake sediment sample collected from Yuncheng city, Shanxi Province, PR China. Strain CFH 90008T was Gram-stain-negative, strictly aerobic, motile with lateral flagella and rod-shaped. Colonies were yellow, circular and smooth. Phylogenetic analyses based on 16S rRNA gene sequences indicated that strain CFH 90008T belonged to the genus
Halomonas
, showing highest sequence similarity to
Halomonas daqingensis
DQD2-30T (98.6 %),
Halomonas saliphila
LCB169T (98.5 %),
Halomonas desiderata
FB2T (98.1 %) and
Halomonas kenyensis
AIR-2T (98.0 %). Good growth was observed at 10–50 °C, pH 6.0–9.0 and with NaCl concentration from 1.0 to 12.0 % (w/v). The predominant quinone was Q9. The major fatty acid (>10 %) was C18 : 1 ω7c, C16 : 0 and C16 : 1 ω7c. The genome of strain CFH 90008T was 4.36 Mbp with a genomic DNA G+C content of 66.7 mol%. Based on low average nucleotide identity and DNA–DNAhybridization results, chemotaxonomic characteristics, and differential physiological properties, strain CFH 90008T could not be classified into any recognized species of the genus
Halomonas
. Therefore, a new species, for which the name Halomonas lactosivorans sp. nov. is proposed. The type strain is CFH 90008T (=DSM 103220T=KCTC 52281T).
Collapse
Affiliation(s)
- Hong Ming
- Synthetic Biology Engineering Lab of Henan Province, College of Life Sciences and Technology, Xinxiang Medical University, Xinxiang 453003, PR China
| | - Wei-li Ji
- Synthetic Biology Engineering Lab of Henan Province, College of Life Sciences and Technology, Xinxiang Medical University, Xinxiang 453003, PR China
| | - Meng Li
- Synthetic Biology Engineering Lab of Henan Province, College of Life Sciences and Technology, Xinxiang Medical University, Xinxiang 453003, PR China
| | - Zhuo-li Zhao
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China
| | - Li-jiao Cheng
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China
| | - Ming-ming Niu
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China
| | - Ling-yu Zhang
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China
| | - Yan Wang
- Synthetic Biology Engineering Lab of Henan Province, College of Life Sciences and Technology, Xinxiang Medical University, Xinxiang 453003, PR China
| | - Guo-xing Nie
- College of Fisheries, Henan Normal University, Xinxiang 453007, PR China
| |
Collapse
|
5
|
Yang Z, Meng Y, Zhao Q, Cheng B, Xu P, Yang C. Critical Functions of Region 1-67 and Helix XIII in Retaining the Active Structure of NhaD Antiporter in Halomonas sp. Y2. Front Microbiol 2018; 9:831. [PMID: 29770128 PMCID: PMC5942162 DOI: 10.3389/fmicb.2018.00831] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 04/11/2018] [Indexed: 11/13/2022] Open
Abstract
NhaD-type antiporters are mainly distributed in various Proteobacteria, especially in marine microorganisms and human pathogens. This distribution as well as the pathogenic properties of these strains suggest that these antiporters contribute to the regulation of high osmoregulation and are potential drug targets. Two NhaD homologs, NhaD1 and NhaD2, from the halotolerant and alkaliphilic Halomonas sp. Y2 exhibits similar, high in vitro activity, but remarkably different in vivo functions. To search for critical domains or residues involved in these differences of physiological functions, various chimeras composed of NhaD1 and NhaD2 segments were generated. Two regions at residues 1–67 and 464–492 were found to be responsible for the robust in vivo function of NhaD2, and region 464–492 is also crucial to the pH response of the antiporter. In particular, the completely abolished activity of KNabc/N463r, highly recovered activity while very weakly recovered ion resistance of the KNabc/N463r-C7 chimera, suggested that transmembrane helix (TM) XIII is crucial for the robust ion resistance of NhaD2. Using site-directed mutagenesis, seven hydrophobic residues in TM XIII were identified as key residues for the ion translocation of NhaD2. Compared with the fluorescence resonance energy transfer (FRET) profile in the wild-type NhaD2, the reduced FRET efficiency of N463r chimeras provided solid evidence for conformational changes in the N463r fusion protein and consequently verified the structural functions of TM XIII in the pH activation and physiological functions of NhaD2.
Collapse
Affiliation(s)
- Zhou Yang
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, Jinan, China
| | - Yiwei Meng
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, Jinan, China
| | - Qi Zhao
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, Jinan, China
| | - Bin Cheng
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, Jinan, China
| | - Ping Xu
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, Jinan, China
| | - Chunyu Yang
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, Jinan, China
| |
Collapse
|
6
|
Shao L, Abdel-Motaal H, Chen J, Chen H, Xu T, Meng L, Zhang Z, Meng F, Jiang J. Characterization of a Functionally Unknown Arginine-Aspartate-Aspartate Family Protein From Halobacillus andaensis and Functional Analysis of Its Conserved Arginine/Aspartate Residues. Front Microbiol 2018; 9:807. [PMID: 29922240 PMCID: PMC5996927 DOI: 10.3389/fmicb.2018.00807] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 04/10/2018] [Indexed: 01/15/2023] Open
Abstract
Arginine–aspartate–aspartate (RDD) family, representing a category of transmembrane proteins containing one highly conserved arginine and two highly conserved aspartates, has been functionally uncharacterized as yet. Here we present the characterization of a member of this family designated RDD from the moderate halophile Halobacillus andaensis NEAU-ST10-40T and report for the first time that RDD should function as a novel Na+(Li+, K+)/H+ antiporter. It’s more interesting whether the highly conserved arginine/aspartate residues among the whole family or between RDD and its selected homologs are related to the protein function. Therefore, we analyzed their roles in the cation-transporting activity through site-directed mutagenesis and found that D154, R124, R129, and D158 are indispensable for Na+(Li+, K+)/H+ antiport activity whereas neither R35 nor D42 is involved in Na+(Li+, K+)/H+ antiport activity. As a dual representative of Na+(Li+, K+)/H+ antiporters and RDD family proteins, the characterization of RDD and the analysis of its important residues will positively contribute to the knowledge of the cation-transporting mechanisms of this novel antiporter and the roles of highly conserved arginine/aspartate residues in the functions of RDD family proteins.
Collapse
Affiliation(s)
- Li Shao
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Heba Abdel-Motaal
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Jin Chen
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Huiwen Chen
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Tong Xu
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Lin Meng
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Zhenglai Zhang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Fankui Meng
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| | - Juquan Jiang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, China
| |
Collapse
|
7
|
Functional Interaction between the N and C Termini of NhaD Antiporters from Halomonas sp. Strain Y2. J Bacteriol 2017; 199:JB.00302-17. [PMID: 28559301 DOI: 10.1128/jb.00302-17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Accepted: 05/23/2017] [Indexed: 02/04/2023] Open
Abstract
Two NhaD-type antiporters, NhaD1 and NhaD2, from the halotolerant and alkaliphilic Halomonas sp. strain Y2, exhibit different physiological functions in regard to Na+ and Li+ resistance, although they share high sequence identity. In the present study, the truncation of an additional 4 C-terminal residues from NhaD2 or an exchange of 39 N-terminal residues between these proteins resulted in the complete loss of antiporter activity. Interestingly, combining 39 N-terminal residues and 7 C-terminal residues of NhaD2 (N39D2-C7) partially recovered the activity for Na+ and Li+ expulsion, as well as complementary growth following exposure to 300 mM Na+ and 100 mM Li+ stress. The recovered activity of chimera N39D2-C7 indicated that the N and C termini are structurally dependent on each other and function synergistically. Furthermore, fluorescence resonance energy transfer (FRET) analysis suggested that the N and C termini are relatively close in proximity which may account for their synergistic function in ion translocation. In the N-terminal region of N39D2-C7, the replacement of Glu38 with Pro abolished the recovered complementary and transport activities. In addition, this amino acid substitution in NhaD2 resulted in a drastically decreased complementation ability in Escherichia coli KNabc (level identical to that of NhaD1), as well as decreased activity and an altered pH profile.IMPORTANCE Limited information on NhaD antiporters supports speculation that these antiporters are important for resistance to high salinity and alkalinity. Moreover, only a few functional residues have been identified in NhaD antiporters, and there is limited literature on the molecular mechanisms of NhaD antiporter activity. The altered antiporter abilities of chimeras and mutants in this study implicate the functions of the N and C termini, especially Glu38, in pH regulation and ion translocation, and, most importantly, the essential roles of this negatively charged residue in maintaining the physiological function of NhaD2. These findings further our understanding of the molecular mechanism of NhaD antiporters for ion transport.
Collapse
|
8
|
Wang Y, Song N, Yang L, Abdel-motaal H, Zhang R, Zhang Z, Meng F, Jiang J. A novel NhaD-type Na+/H+ antiporter from the moderate halophile and alkaliphile Halomonas alkaliphila. Can J Microbiol 2017; 63:596-607. [DOI: 10.1139/cjm-2017-0104] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this study, a NhaD-type Na+/H+ antiporter gene designated Ha-nhaD was obtained by selection of genomic DNA from the moderate halophile and alkaliphile Halomonas alkaliphila in Escherichia coli KNabc lacking 3 major Na+/H+ antiporters. The presence of Ha-NhaD conferred tolerance of E. coli KNabc to NaCl up to 0.6 mol·L–1 and to LiCl up to 0.2 mol·L–1 and to an alkaline pH. pH-dependent Na+(Li+)/H+ antiport activity was detected from everted membrane vesicles prepared from E. coli KNabc/pUC-nhaD but not those of KNabc/pUC18. Ha-NhaD exhibited Na+(Li+)/H+ antiport activity over a wide pH range from 7.0 to 9.5, with the highest activity at pH 9.0. Protein sequence alignment and phylogenetic analysis revealed that Ha-NhaD is significantly different from the 7 known NhaD-type Na+/H+ antiporters, including Dw-NhaD, Dl-NhaD, Vp-NhaD, Vc-NhaD, Aa-NhaD, He-NhaD, and Ha-NhaD1. Although Ha-NhaD showed a closer phylogenetic relationship with Ha-NhaD2, a significant difference in pH-dependent activity profile exists between Ha-NhaD and Ha-NhaD2. Taken together, Ha-nhaD encodes a novel pH-dependent NhaD-type Na+/H+ antiporter.
Collapse
Affiliation(s)
- Yanhong Wang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
- College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing, 163319, People’s Republic of China
| | - Na Song
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
| | - Lina Yang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
| | - Heba Abdel-motaal
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
- Department of Microbiology, Soils, Water & Environment Research Institute, Agriculture Research Center, Egypt
| | - Rui Zhang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
| | - Zhenglai Zhang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
| | - Fankui Meng
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
| | - Juquan Jiang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, People’s Republic of China
| |
Collapse
|
9
|
Characterization of a novel two-component Na +(Li +, K +)/H + antiporter from Halomonas zhaodongensis. Sci Rep 2017; 7:4221. [PMID: 28652569 PMCID: PMC5484666 DOI: 10.1038/s41598-017-04236-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/30/2017] [Indexed: 02/01/2023] Open
Abstract
In this study, genomic DNA was screened for novel Na+/H+ antiporter genes from Halomonas zhaodongensis by selection in Escherichia coli KNabc lacking three major Na+/H+ antiporters. Co-expression of two genes designated umpAB, encoding paired homologous unknown membrane proteins belonging to DUF1538 (domain of unknown function with No. 1538) family, were found to confer E. coli KNabc the tolerance to 0.4 M NaCl and 30 mM LiCl, and an alkaline pH resistance at 8.0. Western blot and co-immunoprecipitation establish that UmpAB localize as a hetero-dimer in the cytoplasmic membranes. Functional analysis reveals that UmpAB exhibit pH-dependent Na+(Li+, K+)/H+ antiport activity at a wide pH range of 6.5 to 9.5 with an optimal pH at 9.0. Neither UmpA nor UmpB showed homology with known single-gene or multi-gene Na+/H+ antiporters, or such proteins as ChaA, MdfA, TetA(L), Nap and PsmrAB with Na+/H+ antiport activity. Phylogenetic analysis confirms that UmpAB should belong to DUF1538 family, which are significantly distant with the above-mentioned proteins with Na+/H+ antiport activity. Taken together, we propose that UmpAB represent a novel two-component Na+(Li+, K+)/H+ antiporter. To the best of our knowledge, this is the first report on the functional analysis of unknown membrane proteins belonging to DUF1538 family.
Collapse
|
10
|
Dong P, Wang L, Song N, Yang L, Chen J, Yan M, Chen H, Zhang R, Li J, Abdel-Motaal H, Jiang J. A UPF0118 family protein with uncharacterized function from the moderate halophile Halobacillus andaensis represents a novel class of Na +(Li +)/H + antiporter. Sci Rep 2017; 7:45936. [PMID: 28374790 PMCID: PMC5379678 DOI: 10.1038/srep45936] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 03/07/2017] [Indexed: 02/06/2023] Open
Abstract
In this study, genomic DNA was screened from Halobacillus andaensis NEAU-ST10-40T by selection in Escherichia coli KNabc lacking three major Na+/H+ antiporters. One gene designated upf0118 exhibiting Na+(Li+)/H+ antiport activity was finally cloned. Protein alignment showed that UPF0118 shares the highest identity of 81.5% with an unannotated gene encoding a protein with uncharacterized protein function belonging to UPF0118 family from H. kuroshimensis, but shares no identity with all known specific Na+(Li+)/H+ antiporter genes or genes with Na+(Li+)/H+ antiport activity. Growth test, western blot and Na+(Li+)/H+ antiport assay revealed that UPF0118 as a transmembrane protein exhibits pH-dependent Na+(Li+)/H+ antiport activity. Phylogenetic analysis indicated that UPF0118 clustered with all its homologs belonging to UPF0118 family at a wide range of 22–82% identities with the bootstrap value of 92%, which was significantly distant with all known specific single-gene Na+(Li+)/H+ antiporters and single-gene proteins with the Na+(Li+)/H+ antiport activity. Taken together, we propose that UPF0118 should represent a novel class of Na+(Li+)/H+ antiporter. To the best of our knowledge, this is the first report on the functional analysis of a protein with uncharacterized protein function as a representative of UPF0118 family containing the domain of unknown function, DUF20.
Collapse
Affiliation(s)
- Ping Dong
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Lidan Wang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Na Song
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Lina Yang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jin Chen
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Mingxue Yan
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Huiwen Chen
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Rui Zhang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Jincheng Li
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Heba Abdel-Motaal
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| | - Juquan Jiang
- Department of Microbiology and Biotechnology, College of Life Sciences, Northeast Agricultural University, Harbin, 150030, PR China
| |
Collapse
|