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URL: http://www.addgene.org/62073
Proper Citation: RRID:Addgene_62073
Insert Name: none
Bacterial Resistance: None
Defining Citation: PMID:26577727
Vector Backbone Description: Vector Backbone:none; Vector Types:; Bacterial Resistance:None
Comments: Genotype = aspC tyrB hisG Precursor strain = RF4 modified from the parent Escherichia coli BL21 CodonPlus (DE3)-RIL Selective amino acid labeling (and/or requirement) = Asp++++, Tyr, (Phe), His ++++RF4, RF5, and RF13 strains have knockouts in both aspC and tyrB genes and therefore require the presence of L-Asp (but not L-Glu) for growth in M63 minimal medium. These strains can be used for selective labeling of selected aromatic amino acid(s) such as Tyr (RF4, RF5, RF13) and/or Trp (RF13). We have NOT tested if these strains could also be used for selective Asp labeling studies (under investigation). Each target gene was deleted from the chromosome of BL21 (DE3) E. coli strain using λ-Red recombination system. Supplemental documents contain a list of PCR primers used for verification of each knocked-out gene as well as an image showing PCR results for this strain. This work is supported in part by JSPS-NSF International Collaborations in Chemistry (ICC) research grant.
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Source: Addgene (RRID:SCR_002037)
Description: Non-profit plasmid repository dedicated to helping scientists around the world share high-quality plasmids. Facilitates archiving and distributing DNA-based research reagents and associated data to scientists worldwide. Repository contains over 65,000 plasmids, including special collections on CRISPR, fluorescent proteins, and ready-to-use viral preparations. There is no cost for scientists to deposit plasmids, which saves time and money associated with shipping plasmids themselves. All plasmids are fully sequenced for validation and sequencing data is openly available. We handle the appropriate Material Transfer Agreements (MTA) with institutions, facilitating open exchange and offering intellectual property and liability protection for depositing scientists. Furthermore, we curate free educational resources for the scientific community including a blog, eBooks, video protocols, and detailed molecular biology resources.
URL: http://www.addgene.org
