Abstract:
:Homologous recombination-based recombineering is a widely used DNA cloning and modification technique; recombineering efficiency improvement would be helpful for high-throughput DNA manipulation. Escherichia coli primase DnaG variants, such as DnaG Q576A and DnaG K580A, increase the recombineering efficiency via impairment of the interaction between primase and the replisome and boost the loading of more ssDNA on the replication fork. Bacterial adaptive immunity origin CRISPR-Cas9 is emerging as a powerful genome editing strategy. In this study, ssDNA recombineering and CRISPR-Cas9 were combined for the generation of DnaG variants. The tightly regulated Red operon expression cassette and tightly regulated Cas9 expression cassette were integrated into one chloroamphenicol resistance, p15A replicon-based vector. A self-curing, kanamycin resistance, p15A replicon-based plasmid was applied for the plasmid elimination after genome editing. The genome editing efficiency was as high as 100%. The recombineering efficiency of the strains harboring the DnaG variants was assayed via the kanamycin resistance gene repair as well as the chromosomal gene deletion experiments. The established genome editing strategy will expedite the DnaG structure and function relationship study as well as the metabolic engineering and synthetic biology applications.
journal_name
Appl Microbiol Biotechnoljournal_title
Applied microbiology and biotechnologyauthors
Li J,Sun J,Gao X,Wu Z,Shang Gdoi
10.1007/s00253-019-09744-9subject
Has Abstractpub_date
2019-04-01 00:00:00pages
3559-3570issue
8eissn
0175-7598issn
1432-0614pii
10.1007/s00253-019-09744-9journal_volume
103pub_type
杂志文章abstract::Three bacterial strains utilizing paracetamol as the sole carbon, nitrogen, and energy source were isolated from a paracetamol-degrading aerobic aggregate, and assigned to species of the genera Stenotrophomonas and Pseudomonas. The Stenotrophomonas species have not included any known paracetamol degraders until now. I...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-012-4170-5
更新日期:2013-04-01 00:00:00
abstract::Biorefineries allow the production of value-added chemicals, yet this also causes the formation of considerable amounts of wastewater that require suitable treatment. These biorefinery wastewaters often contain a high salinity, which inhibits methanogenesis. In this research, molasses were used to mimic these waste st...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-016-7503-y
更新日期:2016-06-01 00:00:00
abstract::Fatty acid desaturases play vital roles in the synthesis of unsaturated fatty acids. In this study, Δ12 and Δ12/Δ15 fatty acid desaturases of the oleaginous yeast Lipomyces starkeyi, termed LsFad2 and LsFad3, respectively, were identified and characterized. Saccharomyces cerevisiae expressing LsFAD2 converted oleic ac...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-018-9345-2
更新日期:2018-10-01 00:00:00
abstract::The biochemical oxygen demand (BOD) value is still a key parameter that can determine the level of organics, particularly the content of biodegradable organics in water. In this work, the effects of sample dilution, which should be done inevitably to get appropriate dissolved oxygen (DO) depletion, on the measurement ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-007-1055-0
更新日期:2007-09-01 00:00:00
abstract::Trichoderma harzianum is a widely distributed soil fungus that antagonizes numerous fungal phytopathogens. The antagonism of T. harzianum usually correlates with the production of antifungal activities including the secretion of fungal cell walls that degrade enzymes such as chitinases. Chitinases Chit42 and Chit33 fr...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-003-1538-6
更新日期:2004-06-01 00:00:00
abstract::Understanding the effect of conserved domains reconstruction of alginate lyases on action mode is essential for their application and in-depth study. We report the expression and action mode of recombinant alginate lyase (AlyM) and its conserved domain reconstruction forms (AlyMΔCBM, cAlyM, and AlyMΔ58C). The enzymati...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-018-9502-7
更新日期:2019-01-01 00:00:00
abstract::The gut microbiota, including both bacterial and fungal communities, plays vital roles in the gut homeostasis of animals, and antibiotics can lead to disorders of these microbial communities. The use of anthelmintic treatment to control parasitic infection has long been a standard practice, although its impact on the ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-020-10838-y
更新日期:2020-11-01 00:00:00
abstract::Medium-chain-length polyhydroxyalkanoates (mcl-PHA) consisting of 3-hydroxyhexanoate (HHx), 3-hydroxyoctanoate (HO), 3-hydroxydecanoate, 3-hydroxydodecanoate, and high-content 3-hydroxytetradecanoate (HTD) was produced by knockout mutant Pseudomonas putida KT2442 termed P. putida KTOY06. When grown on 6 to14 g/L singl...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-007-1092-8
更新日期:2007-10-01 00:00:00
abstract::A genetically engineered microorganism (GEM) was designed to exemplify bacterial strains used for the production of biological material in industry. The recombinant DNA was located on a safety plasmid (pUC19). Survival and persistence of the GEM and its recombinant DNA (rDNA) was determined in soil microcosms by using...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/BF00184696
更新日期:1991-05-01 00:00:00
abstract::The effects of methyl jasmonate (MJ) elicitation on the cell growth and accumulation of ginsenoside in 5-l bioreactor suspension cultures of Panax ginseng were investigated. Ginsenoside accumulation was enhanced by elicitation by MJ (in the range 50-400 microM); however, fresh weight, dry weight and growth ratio of th...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-004-1759-3
更新日期:2005-04-01 00:00:00
abstract::A new tool to provide an environmentally friendly way to deliver active proteins to the environment has been developed, based on the use of polyhydroxyalkanoate (PHA, bioplastic) granules. To illustrate this novel approach, a derived Cry1Ab insect-specific toxin protein was in vivo immobilized into PHA granules throug...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-005-0257-6
更新日期:2006-08-01 00:00:00
abstract::Sugar beet pulp is a natural carbon source composed mainly of pectin and cellulose, which is utilized and degraded by the ascomycete Penicillium purpurogenum. The fungus also grows on and degrades acetylated xylan which lacks cellulose and pectin. Both carbon sources have been used in our laboratory to grow the fungus...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-011-3744-y
更新日期:2012-01-01 00:00:00
abstract::β-Glucuronidase is a lysosomal enzyme and a molecular model of a class of therapeutics approved as enzyme replacement therapies for lysosomal storage diseases. Understanding the effect of bioreactor process variables on the production and quality of the biologics is critical for maintaining quality and efficacy of the...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-019-09889-7
更新日期:2019-08-01 00:00:00
abstract::Chlorogenate hydrolase (EC 3.1.1.42, CHase) was highly induced in mycelia of Aspergillus sojae AKU 3312 grown in Czapek medium containing either instant coffee powder or coffee pulp as inducer. No CHase formation was observed in the mycelia when cultivated without the inducer. CHase was purified readily from CHase-ind...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-008-1659-z
更新日期:2008-11-01 00:00:00
abstract::A cephalosporin deacetylating acetyl xylan esterase was cloned from the genomic DNA of Bacillus subtilis CICC 20034 and functionally expressed in Escherichia coli. Its gene contained an open reading frame of 957 bp encoding 318 amino acids with a calculated mass of 35,607 Da, and it displayed significant identity to a...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-013-5056-x
更新日期:2014-03-01 00:00:00
abstract::The present study emphasised on the development of new mathematical models based on mass balance and stoichiometry of nitrogen removal in anammox hybrid reactor (AHR). The performance of AHR at varying hydraulic retention times (HRTs) and nitrogen loading rates (NLRs) revealed that nitrogen removal efficiency (NRE) in...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-015-6793-9
更新日期:2015-11-01 00:00:00
abstract::Using organically synthesized hydroxyalkanoate coenzyme A thioesters, the activities of two short-chain polyhydroxalkanoate (PHA) synthases were investigated--Ralstonia eutropha PHA synthase (a type I PHA synthase) and Ectothiorhodospira shaposhnikovii PHA synthase (a type III synthase). The results indicate that the ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s002530000562
更新日期:2001-07-01 00:00:00
abstract::Aspergillus niger phytase (PhyA) has been used as a feed supplement to reduce manure phosphorus excretion of swine and poultry but lacks sufficient thermostability for feed pelleting and appropriate pH-activity profile for phytate hydrolysis in the stomach of animals. Previously, a thermostable mutant PhyA18 and two p...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-007-1239-7
更新日期:2008-01-01 00:00:00
abstract::In this study, we investigated the use of Illumina high-throughput sequencing of 16S ribosomal RNA (rRNA) amplicons to explore microbial diversity and community structure in raw and secondary treated wastewater (WW) samples from four municipal wastewater treatment plants (WWTPs A-D) across Australia. Sequence reads we...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-016-7959-9
更新日期:2017-02-01 00:00:00
abstract::Several recent reports described an apoptosis-like programmed cell death (PCD) process in yeast in response to different environmental challenges. In this study, hyperosmotic stress caused by high NaCl concentration in culture medium induced cell death in the haploid yeast Torulopsis glabrata. Propidium iodide (PI) an...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-014-5589-7
更新日期:2014-04-01 00:00:00
abstract::The genome of the coprophilous fungus Podospora anserina harbors a large and highly diverse set of putative lignocellulose-acting enzymes. In this study, we investigated the enzymatic diversity of a broad range of P. anserina secretomes induced by various carbon sources (dextrin, glucose, xylose, arabinose, lactose, c...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-014-5698-3
更新日期:2014-09-01 00:00:00
abstract::Lethal effects of pulsed electric fields (PEF) on suspensions of various bacteria, yeast, and spores in buffer solutions and liquid foodstuffs were examined. Living-cell counts of vegetative cell types were reduced by PEF treatment by up to more than four orders of magnitude (> 99.99%). On the other hand, endo- and as...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s002530050663
更新日期:1996-03-01 00:00:00
abstract::Pseudomonas putida KT2440 is the only fully sequenced P. putida strain. Thus, for transcriptomics and proteomics studies with other P. putida strains, the P. putida KT2440 genomic database serves as standard reference. The utility of KT2440 whole-genome, high-density oligonucleotide microarrays for transcriptomics stu...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-007-0914-z
更新日期:2007-07-01 00:00:00
abstract::Sialylation affects circulating half-life, charge distribution, and other biochemical properties of therapeutic glycoproteins. Loss of protein sialylation during glycoprotein-producing bioprocesses could lead to a low final protein sialylation level and bring negative effects on subsequent clinical efficacy. In this w...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-019-09850-8
更新日期:2019-06-01 00:00:00
abstract::The fungal secretome comprises various oxidative enzymes participating in the degradation of lignocellulosic biomass as a central step in carbon recycling. Among the secreted enzymes, aryl-alcohol oxidases (AAOs) are of interest for biotechnological applications including production of bio-based precursors for plastic...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-020-10878-4
更新日期:2020-11-01 00:00:00
abstract::High vanillin productivity was achieved in the batch biotransformation of ferulic acid by Streptomyces sp. strain V-1. Due to the toxicity of vanillin and the product inhibition, fed-batch biotransformation with high concentration of ferulic acid was unsuccessful. To solve this problem and improve the vanillin yield, ...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-006-0735-5
更新日期:2007-03-01 00:00:00
abstract::Pseudomonas putida KT2440 grew on glucose at a specific rate of 0.48 h(-1) but accumulated almost no poly-3-hydroxyalkanoates (PHA). Subsequent nitrogen limitation on nonanoic acid resulted in the accumulation of only 27% medium-chain-length PHA (MCL-PHA). In contrast, exponential nonanoic acid-limited growth (mu = 0....
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-006-0655-4
更新日期:2007-02-01 00:00:00
abstract::Resolution of (R,S)-ibuprofen enantiomers by esterification in different organic solvents was studied using Candida cylindracea lipase. This enzyme preparation had high enantiospecificity for S(+)-ibuprofen in the esterification reaction of a racemic ibuprofen with primary alcohols. The esterification yields of second...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/BF00169420
更新日期:1992-10-01 00:00:00
abstract::Fungi of the genus Trichoderma are soilborne, green-spored ascomycetes that can be found all over the world. They have been studied with respect to various characteristics and applications and are known as successful colonizers of their habitats, efficiently fighting their competitors. Once established, they launch th...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章,评审
doi:10.1007/s00253-010-2632-1
更新日期:2010-07-01 00:00:00
abstract::Phytophthora infestans is the causative agent of potato blight that resulted in the great famine in Ireland in the nineteenth century. This microbe can release large amounts of the C20 very long-chain polyunsaturated fatty acids arachidonic acid (ARA; 20:4Δ(5, 8, 11, 14)) and eicosapentaenoic acid (EPA; 20:5Δ(5, 8, 11...
journal_title:Applied microbiology and biotechnology
pub_type: 杂志文章
doi:10.1007/s00253-012-4613-z
更新日期:2013-09-01 00:00:00