Alejandro Arce R. (@aleyo_arce) header
Alejandro Arce R. (@aleyo_arce) profile picture

Molecular microbiologist intrigued in AMR💊, metabolism⚙️ and gene regulation🧬 of pseudomonads. Senior researcher at Dept. of Microbiology, Univ. de Sevilla

Braunschweig, Alemania
Joined February 2015
Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)Photo by Alejandro Arce R. (@aleyo_arce)
🚨 New paper out! Collaboration between @hausslerlab, @tuBraunschweig, and @PabloINik, @LabNikel In this protocol, we describe a #CRISPR-Cas9 -Recombineering system for the genetic #engineering of #Pseudomonasaeruginosa lab strains and clinical/environmental isolates (🧵 1/7)
#NewNProt: New #CRISPRCas9 -assisted #recombineering tools allowing genetic editing of intractable #Pseudomonas aeruginosa isolates bit.ly/3rJnqke @HausslerLab @Helmholtz_HZI @tuBraunschweig
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Alejandro Arce R. retweeted
Our group is looking for a PostDoc with a strong background in molecular microbiology, strain design and genetic engineering. Join us at @Rigshospitalet and @DTUtweet to work on bacterial infections and #AMR. Please RT and apply! tinyurl.com/3kt2yxmj
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Alejandro Arce R. retweeted
Fantástico Andony, has hecho un trabajo excelente de la mano de @aleyo_arce Mucha suerte en tu búsqueda de tesis doctoral y en nuestro lab siempre tendrás tu casa 👏🏼👏🏼👏🏼
Pues se acabó el máster ✨🙂‍↔️✨ Gracias a las instituciones y los grupos de investigación que han sido parte de mi formación académica (@Ibarra_Lab y @pbernal209 ) y por supuesto, a mi familia y amigos que me apoyan siempre 🫶🏻 vivan los microbios y la genética! 🧬🔬🦠
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The #Microbes for #sustainability workshop #Baeza @AytoBaeza continues w/a great example of #bacterial #biocontrol by @pbernal209, complete w/a full mechanistic explanation of how Type VI #secretion systems work in #Pseudomonas @UniversidadAnd
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Alejandro Arce R. retweeted
Absolutely honoured to host Microbiology legend Ken Timmis @KennethTimmis at @unisevilla this week! His talk on International Microbiology Literacy Initiative was truly inspiring. Grateful for invaluable stories, advice & experiences shared. It was very special to have him here.
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Revolutionizing gene libraries in E. coli! Cerdan et al present a new approach for efficient integration of large gene libraries into the bacterial chromosome to address protein toxicity & instability issues. A new functional screening in biotech!  ➡️ ami-journals.onlinelibrary.w…
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#Environmental #Microbiology #workshop 2024 led by Juan Luis Ramos, @vdlorenzo_CNB & Puri López-García · Speakers include @pbernal209 @mSystemsJ @portokalica @KennethTimmis & others—applications open till Jan 15th @AMIposts #Baeza #Spain #biotechnology
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Former scientific colleagues, now friends for a life time 🫶🏻
Happy gathering of past, present & future scientific luminaries for joining the memorable celebration & wedding party of our dear friends and colleagues @Alberto_SPJ & @Mery_PipiS 👇
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Every Xmas season the @CNB_CSIC organizes a 1-day workshop for expat Spanish postdocs & young PIs abroad willing to share what they are doing and widen their network of local colleagues. Also, a chance to survey the domestic job market 😅. Please email organizers if interested 👇
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The availability of different AbR cassettes enables also genetic engineering of #clinicalisolates. We include also a whole section with guidelines and recommendations that facilitate the modification of these intractable strains (7/7)
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Both vector sets are available with several antibiotic resistance cassettes, which allows iterative engineering of different alleles without the need for plasmid curing. The complete toolkit can be purchased at @Addgene addgene.org/browse/article/2… (6/7)
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Overall, the minimum time required to carry out a desired genomic modification is 5 working days, having already prepared all the materials required for the genetic engineering of a given lab, clinical or environmental strain (5/7)
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The mutagenesis oligonucleotide requires only 40-50 nt homology regions in order to introduce virtually any type of modification, including short and long deletions, short insertions, and SNPs with varying efficiencies (4/7)
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The second plasmid harnesses the inducible expression of a gene coding the powerful #Pputida Ssr recombinase described recently by @vdlorenzo_CNB. This protein promotes the recombination of a ssDNA mutagenesis oligonucleotide that introduces the desired mutation (3/7)
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Our method consists of a dual plasmid system. The first vector encodes an inducible cas9 and the constitutive expression of a target-specific sgRNA for the counterselection of WT alleles. The plasmid has already proven effective in the related bug #Pputida by @LabNikel (2/7)
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#NewNProt: New #CRISPRCas9 -assisted #recombineering tools allowing genetic editing of intractable #Pseudomonas aeruginosa isolates bit.ly/3rJnqke @HausslerLab @Helmholtz_HZI @tuBraunschweig
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😳Genome-wide screening reveals metabolic regulation of stop-codon readthrough by cyclic AMP: academic.oup.com/nar/article…
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