1
|
Wang S, Dong J, Zhao XL, Song X, Long YH, Xing ZB. Genome-wide identification of MBD gene family members in Eleutherococcus senticosus with their expression motifs under drought stress and DNA demethylation. BMC Genomics 2023; 24:84. [PMID: 36814191 PMCID: PMC9948437 DOI: 10.1186/s12864-023-09191-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 02/15/2023] [Indexed: 02/24/2023] Open
Abstract
BACKGROUND Methyl-binding domain (MBD) is a class of methyl-CpG-binding domain proteins that affects the regulation of gene expression through epigenetic modifications. MBD genes are not only inseparable from DNA methylation but have also been identified and validated in various plants. Although MBD is involved in a group of physiological processes and stress regulation in these plants, MBD genes in Eleutherococcus senticosus remain largely unknown. RESULTS Twenty EsMBD genes were identified in E. senticosus. Among the 24 chromosomes of E. senticosus, EsMBD genes were unevenly distributed on 12 chromosomes, and only one tandem repeat gene existed. Collinearity analysis showed that the fragment duplication was the main motif for EsMBD gene expansion. As the species of Araliaceae evolved, MBD genes also evolved and gradually exhibited different functional differentiation. Furthermore, cis-acting element analysis showed that there were numerous cis-acting elements in the EsMBD promoter region, among which light response elements and anaerobic induction elements were dominant. The expression motif analysis revealed that 60% of the EsMBDs were up-regulated in the 30% water content group. CONCLUSIONS By comparing the transcriptome data of different saponin contents of E. senticosus and integrating them with the outcomes of molecular docking analysis, we hypothesized that EsMBD2 and EsMBD5 jointly affect the secondary metabolic processes of E. senticosus saponins by binding to methylated CpG under conditions of drought stress. The results of this study laid the foundation for subsequent research on the E. senticosus and MBD genes.
Collapse
Affiliation(s)
- Shuo Wang
- grid.440734.00000 0001 0707 0296College of Life Sciences, North China University of Science and Technology, Tangshan, China
| | - Jing Dong
- grid.440734.00000 0001 0707 0296College of Life Sciences, North China University of Science and Technology, Tangshan, China
| | - Xue-Lei Zhao
- grid.440734.00000 0001 0707 0296College of Life Sciences, North China University of Science and Technology, Tangshan, China
| | - Xin Song
- grid.440734.00000 0001 0707 0296College of Life Sciences, North China University of Science and Technology, Tangshan, China
| | - Yue-Hong Long
- College of Life Sciences, North China University of Science and Technology, Tangshan, China.
| | - Zhao-Bin Xing
- College of Life Sciences, North China University of Science and Technology, Tangshan, China.
| |
Collapse
|
2
|
Chen Y, Zheng H, Yang J, Cao Y, Zhou H. Development of a synthetic transcription factor-based S-adenosylmethionine biosensor in Saccharomyces cerevisiae. Biotechnol Lett 2023; 45:255-262. [PMID: 36550338 DOI: 10.1007/s10529-022-03338-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 10/09/2022] [Accepted: 11/23/2022] [Indexed: 12/24/2022]
Abstract
S-Adenosylmethionine (SAM) is a crucial small-molecule metabolite widely used in food and medicine. The development of high-throughput biosensors for SAM biosynthesis can significantly improve the titer of SAM. This paper constructed a synthetic transcription factor (TF)-based biosensor for SAM detecting in Saccharomyces cerevisiae. The synthetic TF, named MetJ-hER-VP16, consists of an Escherichia coli-derived DNA-binding domain MetJ, GS linker, the human estrogen receptor binding domain hER, and the viral activation domain VP16. The synthetic biosensor is capable of sensing SAM in a dose-dependent manner with fluorescence as the output. Additionally, it is tightly regulated by the inducer SAM and β-estradiol, which means that the fluorescence output is only available when both are present together. The synthetic SAM biosensor could potentially be applied for high-throughput metabolic engineering and is expected to improve SAM production.
Collapse
Affiliation(s)
- Yawei Chen
- College of Chemical and Pharmaceutical Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China.
| | - Huijie Zheng
- College of Chemical and Pharmaceutical Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
| | - Jiajia Yang
- College of Chemical and Pharmaceutical Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
| | - Yiting Cao
- College of Chemical and Pharmaceutical Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
| | - Huiyun Zhou
- College of Chemical and Pharmaceutical Engineering, Henan University of Science and Technology, Luoyang, 471023, People's Republic of China
| |
Collapse
|
3
|
Zhang L, Liu Y, Lu Y, Wang G. Targeting epigenetics as a promising therapeutic strategy for treatment of neurodegenerative diseases. Biochem Pharmacol 2022; 206:115295. [DOI: 10.1016/j.bcp.2022.115295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/03/2022] [Accepted: 10/04/2022] [Indexed: 11/16/2022]
|
4
|
Cai Y, Zhu K, Shen L, Ma J, Bao L, Chen D, Wei L, Wei N, Liu B, Wu Y, Chen S. Evolved Biosensor with High Sensitivity and Specificity for Measuring Cadmium in Actual Environmental Samples. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:10062-10071. [PMID: 35762704 DOI: 10.1021/acs.est.2c00627] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Bacterial biosensors have great potential in contaminant detection for sensitivity, specificity, cost-effectiveness, and easy operation. However, the existing cadmium-responsive bacterial biosensors cannot meet the real-world detection requirements due to lack of sensitivity, specificity, and anti-interference capability. This study aimed to develop a bacterial biosensor for detecting the total and extractable cadmium in actual environmental samples. We constructed the cadmium-responsive biosensor with the regulatory element (cadmium resistance transcriptional regulatory, CadR) and the reporting element (GFP) and improved its performance by directed evolution. The mutant libraries of biosensors were generated by error-prone PCR and screened by continuous five-round fluorescence-activated cell sorting (FACS), and a bacteria variant epCadR5 with higher performance was finally isolated. Biosensor fluorescence intensity was measured by a microplate reader, and results showed that the evolved cadmium-responsive bacterial biosensor was of high sensitivity and specificity in detecting trace cadmium, with a detection limit of 0.45 μg/L, which is 6.8 times more specific to cadmium than that of the wild-type. Furthermore, microscopic qualitative analysis results showed that the bacteria could produce fluorescence response in a cadmium-contaminated soil matrix, and quantitative analysis results showed that the values of cadmium from epCadR5 bacteria were close to that from inductively coupled plasma-mass spectrometry. These results suggest that the biosensor may have a broad application prospect in the detection of cadmium-contaminated soil and water.
Collapse
Affiliation(s)
- Yeshen Cai
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Kaili Zhu
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Liang Shen
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Jie Ma
- School of Public Health, Wannan Medical College, Wuhu 241002, China
| | - Lingzhi Bao
- School of Public Health, Wannan Medical College, Wuhu 241002, China
| | - Dongdong Chen
- Institute of Environmental Physics and Technology, Anhui University, Hefei 230039, China
| | - Liangchen Wei
- School of Public Health, Wannan Medical College, Wuhu 241002, China
| | - Nan Wei
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Binmei Liu
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Yuejin Wu
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Shaopeng Chen
- Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
- School of Public Health, Wannan Medical College, Wuhu 241002, China
| |
Collapse
|
5
|
Varela RB, Cararo JH, Tye SJ, Carvalho AF, Valvassori SS, Fries GR, Quevedo J. Contributions of epigenetic inheritance to the predisposition of major psychiatric disorders: theoretical framework, evidence, and implications. Neurosci Biobehav Rev 2022; 135:104579. [DOI: 10.1016/j.neubiorev.2022.104579] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 01/10/2022] [Accepted: 02/11/2022] [Indexed: 02/08/2023]
|
6
|
Farouq MW, Boulila W, Hussain Z, Rashid A, Shah M, Hussain S, Ng N, Ng D, Hanif H, Shaikh MG, Sheikh A, Hussain A. A Novel Coupled Reaction-Diffusion System for Explainable Gene Expression Profiling. SENSORS (BASEL, SWITZERLAND) 2021; 21:2190. [PMID: 33801002 PMCID: PMC8003942 DOI: 10.3390/s21062190] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 12/20/2022]
Abstract
Machine learning (ML)-based algorithms are playing an important role in cancer diagnosis and are increasingly being used to aid clinical decision-making. However, these commonly operate as 'black boxes' and it is unclear how decisions are derived. Recently, techniques have been applied to help us understand how specific ML models work and explain the rational for outputs. This study aims to determine why a given type of cancer has a certain phenotypic characteristic. Cancer results in cellular dysregulation and a thorough consideration of cancer regulators is required. This would increase our understanding of the nature of the disease and help discover more effective diagnostic, prognostic, and treatment methods for a variety of cancer types and stages. Our study proposes a novel explainable analysis of potential biomarkers denoting tumorigenesis in non-small cell lung cancer. A number of these biomarkers are known to appear following various treatment pathways. An enhanced analysis is enabled through a novel mathematical formulation for the regulators of mRNA, the regulators of ncRNA, and the coupled mRNA-ncRNA regulators. Temporal gene expression profiles are approximated in a two-dimensional spatial domain for the transition states before converging to the stationary state, using a system comprised of coupled-reaction partial differential equations. Simulation experiments demonstrate that the proposed mathematical gene-expression profile represents a best fit for the population abundance of these oncogenes. In future, our proposed solution can lead to the development of alternative interpretable approaches, through the application of ML models to discover unknown dynamics in gene regulatory systems.
Collapse
Affiliation(s)
- Muhamed Wael Farouq
- Department of Statistics, Mathematics and Insurance, University of Ain Shams, Cairo 11566, Egypt;
- School of Computing, Edinburgh Napier University, Edinburgh EH11 4BN, UK
| | - Wadii Boulila
- RIADI Laboratory, National School of Computer Sciences, University of Manouba, Manouba 2010, Tunisia;
- IS Department, College of Computer Science and Engineering, Taibah University, Medina 42353, Saudi Arabia
| | - Zain Hussain
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh EH8 9YL, UK; (Z.H.); (N.N.); (A.S.)
| | | | - Moiz Shah
- NHS Greater Glasgow and Clyde, Glasgow G12 0XH, UK; (M.S.); (M.G.S.)
| | - Sajid Hussain
- Albany Gastroenterology Consultants, Albany, NY 12206, USA;
| | - Nathan Ng
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh EH8 9YL, UK; (Z.H.); (N.N.); (A.S.)
| | - Dominic Ng
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (D.N.); (H.H.)
| | - Haris Hanif
- Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PL, UK; (D.N.); (H.H.)
| | | | - Aziz Sheikh
- College of Medicine and Veterinary Medicine, University of Edinburgh, Edinburgh EH8 9YL, UK; (Z.H.); (N.N.); (A.S.)
| | - Amir Hussain
- School of Computing, Edinburgh Napier University, Edinburgh EH11 4BN, UK
| |
Collapse
|
7
|
Feng Y, Huang J, Qu C, Huang M, Chen Z, Tang D, Xu Z, Wang B, Chen Z. Future perspective: high-throughput construction of new ultrasensitive cytokine and virion liquid chips for high-throughput screening (HTS) of anti-inflammatory drugs or clinical diagnosis and treatment of inflammatory diseases. Anal Bioanal Chem 2020; 412:7685-7699. [PMID: 32870351 PMCID: PMC7459963 DOI: 10.1007/s00216-020-02894-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 07/31/2020] [Accepted: 08/18/2020] [Indexed: 01/01/2023]
Abstract
Pathogen-host cell interactions play an important role in many human infectious and inflammatory diseases. Several pathogens, including Escherichia coli (E. coli), Mycobacterium tuberculosis (M. tb), and even the recent 2019 novel coronavirus (2019-nCoV), can cause serious breathing and brain disorders, tissue injury and inflammation, leading to high rates of mortality and resulting in great loss to human physical and mental health as well as the global economy. These infectious diseases exploit the microbial and host factors to induce serious inflammatory and immunological symptoms. Thus the development of anti-inflammatory drugs targeting bacterial/viral infection is an urgent need. In previous studies, YojI-IFNAR2, YojI-IL10RA, YojI-NRP1,YojI-SIGLEC7, and YojI-MC4R membrane-protein interactions were found to mediate E. coli invasion of the blood-brain barrier (BBB), which activated the downstream anti-inflammatory proteins NACHT, LRR and PYD domains-containing protein 2(NLRP2), using a proteomic chip conjugated with cell immunofluorescence labeling. However, the studies of pathogen (bacteria/virus)-host cell interactions mediated by membrane protein interactions did not extend their principles to broad biomedical applications such as 2019-nCoV infectious disease therapy. The first part of this feature article presents in-depth analysis of the cross-talk of cellular anti-inflammatory transduction signaling among interferon membrane protein receptor II (IFNAR2), interleukin-10 receptor subunit alpha (IL-10RA), NLRP2 and [Ca2+]-dependent phospholipase A2 (PLA2G5), based on experimental results and important published studies, which lays a theoretical foundation for the high-throughput construction of the cytokine and virion solution chip. The paper then moves on to the construction of the novel GPCR recombinant herpes virion chip and virion nano-oscillators for profiling membrane protein functions, which drove the idea of constructing the new recombinant virion and cytokine liquid chips for HTS of leading drugs. Due to the different structural properties of GPCR, IFNAR2, ACE2 and Spike of 2019-nCoV, their ligands will either bind the extracellular domain of IFNAR2/ACE2/Spike or the specific loops of the GPCR on the envelope of the recombinant herpes virions to induce dynamic charge distribution changes that lead to the variable electron transition for detection. Taken together, the combined overview of two of the most innovative and exciting developments in the immunoinflammatory field provides new insight into high-throughput construction of ultrasensitive cytokine and virion liquid chips for HTS of anti-inflammatory drugs or clinical diagnosis and treatment of inflammatory diseases including infectious diseases, acute or chronic inflammation (acute gouty arthritis or rheumatoid arthritis), cardiovascular disease, atheromatosis, diabetes, obesity, tissue injury and tumors. It has significant value in the prevention and treatment of these serious and painful diseases. Graphical abstract.
Collapse
Affiliation(s)
- Yingzhu Feng
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China. .,Key Laboratory of Bio-theological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China.
| | - Jiuhong Huang
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China
| | - Chuanhua Qu
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China
| | - Mengjun Huang
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China
| | - Zhencong Chen
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China
| | - Dianyong Tang
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China
| | - Zhigang Xu
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China
| | - Bochu Wang
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China. .,Key Laboratory of Bio-theological Science and Technology of Ministry of Education, College of Bioengineering, Chongqing University, Chongqing, 400045, China.
| | - Zhongzhu Chen
- College of Pharmacy & International Academy of Targeted Therapeutics and Innovation (IATTI), Chongqing University of Art and Sciences, Chongqing, 402160, China.
| |
Collapse
|
8
|
Zhu Y, Zhou C, Wang Y, Li C. Transporter Engineering for Microbial Manufacturing. Biotechnol J 2020; 15:e1900494. [PMID: 32298528 DOI: 10.1002/biot.201900494] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/30/2020] [Indexed: 01/08/2023]
Abstract
Microbes play an important role in biotransformation and biosynthesis of biofuels, natural products, and polymers. Therefore, microbial manufacturing has been widely used in medicine, industry, and agriculture. However, common strategies including enzyme engineering, pathway optimization, and host engineering are generally inadequate to obtain an efficient microbial production system. Transporter engineering provides an alternative strategy to promote the transmembrane transfer of substrates, intermediates, and final products in microbial cells and thus enhances production by alleviating feedback inhibition and cytotoxicity caused by final products. According to the current studies in transport engineering, native transporters usually have low expression and poor transportation ability, resulting in inefficient transport processes and microbial production. In this review, current approaches for transporter mining, characterization, and verification are comprehensively summarized. Practical approaches to enhance the transport system in engineered cells, such as balancing transporter overexpression and cell growth, and evolution of native transporters are discussed. Furthermore, the applications of transporter engineering in microbial manufacturing, including enhancement of substrate utilization, concentration of metabolic flux to the target pathway, and acceleration of efflux and recovery of products, demonstrate its outstanding advantages and promising prospects.
Collapse
Affiliation(s)
- Ying Zhu
- Department of Biochemical Engineering, Institute for Synthetic Biosystem, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Chen Zhou
- Department of Biochemical Engineering, Institute for Synthetic Biosystem, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Ying Wang
- Department of Biochemical Engineering, Institute for Synthetic Biosystem, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| | - Chun Li
- Department of Biochemical Engineering, Institute for Synthetic Biosystem, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China
| |
Collapse
|
9
|
Zhang J, Wang Z, Su T, Sun H, Zhu Y, Qi Q, Wang Q. Tuning the Binding Affinity of Heme-Responsive Biosensor for Precise and Dynamic Pathway Regulation. iScience 2020; 23:101067. [PMID: 32371371 PMCID: PMC7200772 DOI: 10.1016/j.isci.2020.101067] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2019] [Revised: 02/21/2020] [Accepted: 04/13/2020] [Indexed: 02/06/2023] Open
Abstract
Current challenge for dynamic pathway control in metabolic engineering is enabling the components of the artificial regulatory system to be tunable. Here, we designed and built a heme-responsive regulatory system containing a heme biosensor HrtR and CRISPRi to regulate chemicals production while maintaining the intracellular heme homeostasis. A series of engineered biosensors with varied sensitivity and threshold were obtained by semi-rational design with site saturated mutation of HrtR. The modified metabolite-binding affinity of HrtR was confirmed by heme titration and molecular dynamic simulation. Dynamic regulation pattern of the system was validated by the fluctuation of gene expression and intracellular heme concentration. The efficiency of this regulatory system was proved by improving the 5-aminolevulinic acid (ALA) production to 5.35g/L, the highest yield in batch fermentation of Escherichia coli. This system was also successfully used in improving porphobilinogen (PBG) and porphyrins biosynthesis and can be applied in many other biological processes. Designed and built a heme-responsive regulatory system employing HrtR and CRISPRi Turning the binding affinity of HrtR by site saturation mutations Optimizing the system to achieve dynamic regulation of target genes The system was applied to the ALA, PBG, and porphyrins production
Collapse
Affiliation(s)
- Jian Zhang
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao 266237, P. R. China
| | - Zhiguo Wang
- Institute of Ageing Research, School of Medicine, Hangzhou Normal University, Hangzhou 311121, P. R. China
| | - Tianyuan Su
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao 266237, P. R. China
| | - Huanhuan Sun
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao 266237, P. R. China
| | - Yuan Zhu
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao 266237, P. R. China
| | - Qingsheng Qi
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao 266237, P. R. China; CAS Key Lab of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, P. R. China.
| | - Qian Wang
- State Key Laboratory of Microbial Technology, National Glycoengineering Research Center, Shandong University, Qingdao 266237, P. R. China.
| |
Collapse
|