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Plasmid Name Proper Citation Insert Name Organism Bacterial Resistance Defining Citation Comments Vector Backbone Description Relevant Mutation Record Last Update Mentions Count
JM106
 
Resource Report
Resource Website
RRID:Addgene_49757 Relevant genotype: endA1, gyrA96, thi, hsdR17, supE44, relA1, λ-, Δ(lac-proAB) E.coli None PMID:2985470 Vector Backbone:N/A; Vector Types:; Bacterial Resistance:None 2026-08-15 01:16:02 0
JM101
 
Resource Report
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RRID:Addgene_50349 Relevant genotype: supE, thi, Δ(lac-proAB), [F' traD36, proAB, lacIqZΔM15] E. coli None Vector Backbone:N/A; Vector Types:; Bacterial Resistance:None 2026-08-15 01:16:05 0
JM83
 
Resource Report
Resource Website
RRID:Addgene_50348 Relevant genotype: ara, Δ(lac-proAB), rspL(+strA), ϕ80, lacZΔM15 E. coli None Vector Backbone:N/A; Vector Types:; Bacterial Resistance:None 2026-08-15 01:16:07 0
MG1655 ΔendA ΔrecA
 
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RRID:Addgene_37853 None PMID:20643967 Vector Backbone:N/A; Vector Types:E. coli bacterial strain; Bacterial Resistance:None 2026-08-15 01:14:17 0
MG1655 ΔendA ΔrecA (DE3)
 
Resource Report
Resource Website
1+ mentions
RRID:Addgene_37854 None PMID:21110891 Vector Backbone:N/A; Vector Types:E. coli bacterial strain; Bacterial Resistance:None 2026-08-15 01:14:17 8
BL21∆serB
 
Resource Report
Resource Website
1+ mentions
RRID:Addgene_34929 None PMID:21868676 To prevent possible enzymatic dephosphorylation of O-phospho-L-serine (Sep) in vivo, the gene encoding phosphoserine phosphatase (serB), which catalyzes the last step in serine biosynthesis, was deleted from Escherichia coli strain BL21. Markerless gene deletions were carried out using a λ-red and FLP recombinase-based gene knockout strategy. Vector Backbone:None; Vector Types:; Bacterial Resistance:None 2026-08-15 01:13:56 5
JS200 strain
 
Resource Report
Resource Website
RRID:Addgene_11794 JS200 None PMID:12909725 For use with pEP PolI (addgene #11722) and pWT PolI (addgene #11721). This strain contains a temp sens mutation in PolI. Backbone Size:0; Vector Backbone:n/a; Vector Types:; Bacterial Resistance:None 2026-08-15 01:02:59 0
BLIM cells
 
Resource Report
Resource Website
1+ mentions
RRID:Addgene_35609 none None PMID:10610690 To be used with the following plasmids from the Matthews lab: pTARA (www.addgene.org/31491), pLS1 (www.addgene.org/31490), and (www.addgene.org/31492) pLS1/-11 Vector Backbone:NA; Vector Types:; Bacterial Resistance:None 2026-08-15 01:14:02 1
BL21 ΔrecBCD
 
Resource Report
Resource Website
RRID:Addgene_176581 This is a strain. None PMID:35034449 Please visit https://www.biorxiv.org/content/10.1101/2021.09.07.459228v1 for bioRxiv preprint. Primers for recBCD deletion verification: Foward - ttgatttactgcccgagagc Reverse - gtcaaccgaatgcagacatc Vector Backbone:Strain; Vector Types:; Bacterial Resistance:None recBCD genomic deletion 2026-08-15 01:11:00 0
BL21ΔABC
 
Resource Report
Resource Website
RRID:Addgene_102266 None PMID:29164072 Genotype = ΔompA ΔlamB ΔompC Precursor strain = BL21Gold(DE3) [genotype F- ompT hsdS(rB– mB– ) dcm+ Tetr gal λ(DE3) endA Hte] Supplemental document contains a list of genotypes and PCR primers used for verification of each knocked-out gene Vector Backbone:none; Vector Types:; Bacterial Resistance:None 2026-08-15 01:00:23 0
BL21ΔABF
 
Resource Report
Resource Website
RRID:Addgene_102267 None PMID:29164072 Genotype = ΔompA ΔlamB ΔompF Precursor strain = BL21Gold(DE3) [genotype F- ompT hsdS(rB– mB– ) dcm+ Tetr gal λ(DE3) endA Hte] Supplemental document contains a list of genotypes and PCR primers used for verification of each knocked-out gene Vector Backbone:none; Vector Types:; Bacterial Resistance:None 2026-08-15 01:00:23 0
RF15
 
Resource Report
Resource Website
RRID:Addgene_102799 none None PMID:33289521 This work is supported in part by JSPS-NSF International Collaborations in Chemistry (ICC) research grant. Genotype= aspC tyrB trpA trpB glyA serB Precursor strain = RF14 Modified from the parent Escherichia coli BL21(DE3) strain Selective amino acid labeling (and/or requirement) = Asp, Tyr, Trp, (Phe), Gly, Ser+++++ +++++ RF15 has knockouts in aspC, tyrB, trpA, trpB, glyA and serB genes and requires the presence of L-Asp, L-Tyr, L-Trp, L-Gly plus L-Ser for growth in M63 minimal medium, but it does NOT grow in the presence of L-Asp, L-Tyr, L-Trp, L-Gly, L-Ser plus L-Cys (either in the presence or absence of L-Ala) (i.e., L-Cys inhibits the growth of RF15) Please visit the following links for additional details on this strain and selective amino acid labeling- http://www2.nms.ac.jp/fesworld/EcoliStrains.html http://www2.nms.ac.jp/fesworld/EcoliStrainsSuppl.html Note that these strains are NOT competent cells and one needs to make them competent before use. 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. Supporting References: Lin, M. T., Fukazawa, R., Miyajima-Nakano, Y., Matsushita, S., Choi, S. K., Iwasaki, T., and Gennis, R. B. (2015) Escherichia coliauxotroph host strains for amino acid-selective isotope labeling of recombinant proteins. Methods Enzymol. (Isotope Labeling of Biomolecules - Labeling Methods), 565, 45-66. Iwasaki, T., Fukazawa, R., Miyajima-Nakano, Y., Baldansuren, A., Matsushita, S., Lin, M. T., Gennis, R. B., Hasegawa, K., Kumasaka, T., and Dikanov, S. A. (2012) Dissection of hydrogen bond interaction network around an iron-sulfur cluster by site-specific isotope labeling of hyperthermophilic archaeal Rieske-type ferredoxin. J. Am. Chem. Soc. 134, 19731-19738. Lin, M. T., Sperling, L. J., Frericks Schmidt, H. L., Tang, M., Samoilova, R. I., Kumasaka, T., Iwasaki, T., Dikanov, S. A., Rienstra, C. M., and Gennis, R. B. (2011) A rapid and robust method for selective isotope labeling of proteins. Methods 55, 370-378. Vector Backbone:none; Vector Types:; Bacterial Resistance:None 2026-08-15 01:00:26 0
RF21
 
Resource Report
Resource Website
RRID:Addgene_102803 none None PMID:33289521 This work is supported in part by JSPS-NSF International Collaborations in Chemistry (ICC) research grant. Genotype= aspC tyrB ilvE avtA yfbQ(alaA) yfdZ(alaC) Precursor strain = RF18 Modified from the parent Escherichia coli BL21(DE3) strain Selective amino acid labeling (and/or requirement) = Asp, Tyr, Phe, Ile, Leu, Val#### #### RF21 has knockouts in the four general transaminase genes of E. coli (aspC, tyrB, ilvE, and avtA) and is found to require the presence of L-Asp, L-Tyr, L-Phe, L-Ile, L-Leu plus L-Val for slow growth in M63 minimal medium. Although RF21 strain has further knockouts in yfbQ (alaA) and yfdZ (alaC) genes, it is NOT an L-Ala auxotroph, either (requiring the presence of L-Asp, L-Tyr, L-Phe, L-Ile, L-Leu plus L-Val for slow growth in M63 minimal medium, like RF18). Please visit the following links for additional details on this strain and selective amino acid labeling- http://www2.nms.ac.jp/fesworld/EcoliStrains.html http://www2.nms.ac.jp/fesworld/EcoliStrainsSuppl.html Note that these strains are NOT competent cells and one needs to make them competent before use. 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. Supporting References: Lin, M. T., Fukazawa, R., Miyajima-Nakano, Y., Matsushita, S., Choi, S. K., Iwasaki, T., and Gennis, R. B. (2015) Escherichia coliauxotroph host strains for amino acid-selective isotope labeling of recombinant proteins. Methods Enzymol. (Isotope Labeling of Biomolecules - Labeling Methods), 565, 45-66. Iwasaki, T., Fukazawa, R., Miyajima-Nakano, Y., Baldansuren, A., Matsushita, S., Lin, M. T., Gennis, R. B., Hasegawa, K., Kumasaka, T., and Dikanov, S. A. (2012) Dissection of hydrogen bond interaction network around an iron-sulfur cluster by site-specific isotope labeling of hyperthermophilic archaeal Rieske-type ferredoxin. J. Am. Chem. Soc. 134, 19731-19738. Lin, M. T., Sperling, L. J., Frericks Schmidt, H. L., Tang, M., Samoilova, R. I., Kumasaka, T., Iwasaki, T., Dikanov, S. A., Rienstra, C. M., and Gennis, R. B. (2011) A rapid and robust method for selective isotope labeling of proteins. Methods 55, 370-378. Vector Backbone:none; Vector Types:; Bacterial Resistance:None 2026-08-15 01:00:26 0
RF18
 
Resource Report
Resource Website
RRID:Addgene_102802 none None PMID:33289521 This work is supported in part by JSPS-NSF International Collaborations in Chemistry (ICC) research grant. Genotype= aspC tyrB ilvE avtA Precursor strain = RF17 Modified from the parent Escherichia coli BL21(DE3) strain Selective amino acid labeling (and/or requirement) = Asp, Tyr, Phe, Ile, Leu, Val#### ####RF18 has knockouts in the four general transaminase genes of E. coli (aspC, tyrB, ilvE, and avtA) and is found to require the presence of L-Asp, L-Tyr, L-Phe, L-Ile, L-Leu plus L-Val for slow growth in M63 minimal medium. Please visit the following links for additional details on this strain and selective amino acid labeling- http://www2.nms.ac.jp/fesworld/EcoliStrains.html http://www2.nms.ac.jp/fesworld/EcoliStrainsSuppl.html Note that these strains are NOT competent cells and one needs to make them competent before use. 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. Supporting References: Lin, M. T., Fukazawa, R., Miyajima-Nakano, Y., Matsushita, S., Choi, S. K., Iwasaki, T., and Gennis, R. B. (2015) Escherichia coliauxotroph host strains for amino acid-selective isotope labeling of recombinant proteins. Methods Enzymol. (Isotope Labeling of Biomolecules - Labeling Methods), 565, 45-66. Iwasaki, T., Fukazawa, R., Miyajima-Nakano, Y., Baldansuren, A., Matsushita, S., Lin, M. T., Gennis, R. B., Hasegawa, K., Kumasaka, T., and Dikanov, S. A. (2012) Dissection of hydrogen bond interaction network around an iron-sulfur cluster by site-specific isotope labeling of hyperthermophilic archaeal Rieske-type ferredoxin. J. Am. Chem. Soc. 134, 19731-19738. Lin, M. T., Sperling, L. J., Frericks Schmidt, H. L., Tang, M., Samoilova, R. I., Kumasaka, T., Iwasaki, T., Dikanov, S. A., Rienstra, C. M., and Gennis, R. B. (2011) A rapid and robust method for selective isotope labeling of proteins. Methods 55, 370-378. Vector Backbone:none; Vector Types:; Bacterial Resistance:None 2026-08-15 01:00:26 0
HL 6703
 
Resource Report
Resource Website
RRID:Addgene_69778 None PMID:27084942 Vector Backbone:none; Vector Types:Synthetic Biology; Bacterial Resistance:None 2026-08-15 01:18:55 0
HL 6686
 
Resource Report
Resource Website
RRID:Addgene_69775 None PMID:27084942 Vector Backbone:none; Vector Types:Synthetic Biology; Bacterial Resistance:None 2026-08-15 01:18:55 0
HL 3500
 
Resource Report
Resource Website
RRID:Addgene_69774 None PMID:27084942 Vector Backbone:none; Vector Types:Synthetic Biology; Bacterial Resistance:None 2026-08-15 01:18:55 0
HL 6778
 
Resource Report
Resource Website
RRID:Addgene_69782 None PMID:27084942 Vector Backbone:none; Vector Types:Synthetic Biology; Bacterial Resistance:None 2026-08-15 01:19:01 0
HL 6777
 
Resource Report
Resource Website
RRID:Addgene_69781 None PMID:27084942 Vector Backbone:none; Vector Types:Synthetic Biology; Bacterial Resistance:None 2026-08-15 01:18:55 0
CY027
 
Resource Report
Resource Website
RRID:Addgene_72402 None PMID:26315440 No antibiotic resistance. Vector Backbone:E. coli BW25113; Vector Types:Bacterial Expression, Synthetic Biology; Bacterial Resistance:None 2026-08-15 01:19:19 0

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