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5 protocols using fmoc dab ivdde oh

1

Multistep Peptide Synthesis Protocol

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Piperidine, diisopropylethylamine
(DIPEA), trifluoroacetic acid (TFA), and 1H-benzotriazolium-1-[bis(dimethylamino)methylene]-5-chloro-hexafluorophosphate-(1-),3-oxide
(HCTU) were obtained from Auspep (Melbourne, Australia). Fmoc-Dab(Boc)-OH,
Fmoc-d-Phe(4-Iodo)-OH, and Fmoc-Dab(ivDde)-OH were from Chem-Impex
International (U.S.A.). Fmoc-Thr(tBu)-OH was purchased from Mimotopes
(Melbourne, Australia). Fmoc-OctGly-OH was obtained from Try-lead
Chem (Hangzhou, China). Dimethylformamide (DMF), methanol (CH3OH), diethyl ether, dichloromethane (DCM), hydrochloric acid,
and acetonitrile were from Merck (Melbourne, Australia). Fmoc-Thr(tBu)-TCP-resin
was obtained from Intavis Bioanalytical Instruments (Koeln, Germany).
Dansylglycine, triisopropylsilane (TIPS), and diphenylphosphorylazide
(DPPA) were from Sigma-Aldrich (Castle Hill, Australia).
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2

Synthesis of Polymyxin Lipopeptide Antibody

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Anti-polymyxin B mouse IgM antibody (clone 45) was obtained from Thermo
Fisher Scientific (Rockford, Illinois, USA). Polymyxin B (sulfate), colistin
(sulfate), triisopropylsilane (TIPS), trifluoroacetic acid, (TFA) and
diphenylphosphorylazide (DPPA), Streptavidin were purchased from Sigma-Aldrich
(Sydney, New South Wales, Australia). Piperidine and diisopropylethylamine
(DIPEA) were obtained from Auspep (Melbourne, Victoria, Australia).
Fmoc-Dab(Boc)-OH was purchased from Try-lead Chem (Hangzhou, Zhejiang,China).
Fmoc-Thr(tBu)-OH and Fmoc-Leu-OH were from Mimotopes (Melbourne, Australia).
Fmoc-Dab(ivDde)-OH, Fmoc-D-Phe-OH, Fmoc-Dap-OH, Fmoc-D-Dap-OH and
1H-Benzotriazolium-1-[bis(dimethylamino)methylene]-5-chloro
hexafluoro-phosphate-(1-),3-oxide (HCTU) were purchased from Chem-Impex
International (Wood Dale, Illinois, USA). Fmoc-Thr(tBu)-TCP-Resin was obtained
from Intavis Bioanyltical Instruments (Köln, Cologne,Germany).
Dimethylformamide (DMF), methanol (MeOH), diethyl ether, dichloromethane (DCM),
hydrochloric acid and acetonitrile were purchased from Merck (Melbourne,
Victoria, Australia). Polymyxin lipopeptide stock solutions were prepared with
Milli-Q water (Millipore, North Ryde, New South Wales, Australia) and filtered
using 0.22-µm syringe filters (Sartorius, Melbourne, Victoria,
Australia). Solutions were stored at 4°C for up to one month.57 (link)
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3

Peptide Synthesis and Characterization

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Diisopropylethylamine (DIPEA) was obtained from Auspep (Melbourne, Australia). Fmoc-L-OctGly-OH and Fmoc-Dab(Boc)-OH were obtained from Try-lead Chem (Hangzhou, China). Fmoc-Dab(ivDde)-OH, Fmoc-D-Leu-OH, 1H-Benzotriazolium-1-[bis(dimethylamino)methylene]-5-chloro hexafluoro- phosphate-(1-),3-oxide (HCTU) and 1,1,1,3,3,3-Hexafluoro-2-propanol (HFIP) were obtained from Chem-Impex International (Wood Dale, IL, USA). Fmoc-Thr(tBu)-OH, Fmoc-Ala-OH and Fmoc-Gly-OH were obtained from Mimotopes (Melbourne, Australia). N-Fmoc-Amido-dPEG2-OH was obtained from Peptides International (Louisville, KY, USA). Dichloromethane (DCM), dimethylformamide (DMF), diethyl ether and acetonitrile were obtained from Merck (Melbourne, Australia). Fmoc-Thr(tBu)-TCP-Resin was obtained from Intavis Bioanyltical Instruments (Köln, Germany). Piperidine, triisopropylsilane (TIPS), trifluoroacetic acid (TFA), dansyl-chloride, ethanedithiol (EDT) and diphenylphosphorylazide (DPPA) were obtained from Sigma-Aldrich (Castle Hill, Australia) Polymyxin B sulfate and colistin sulfate were research grade and obtained from BetaPharma (Shanghai, China).
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4

Solid-Phase Synthesis of Polymyxin Peptides

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Polymyxin B (sulfate), colistin (sulfate),
lipopolysaccharides (LPS), dansylglycine, triisopropylsilane (TIPS),
diphenylphosphorylazide (DPPA), and diisopropylethylamine (DIPEA)
were obtained from Sigma-Aldrich (Sydney, NSW, Australia). All other
reagents were of the highest purity and commercially available. Stock
solutions of Polymyxin B and colistin were prepared in Milli-Q water
(Millipore, North Ryde, NSW, Australia) and filtered through 0.22-μm
syringe filters (Sartorius, Melbourne, Vic, Australia). Solutions
were stored at 4 °C for up to one month.8 (link) Piperidine, diisopropylethylamine (DIPEA), trifluoroacetic acid
(TFA), and 1H-benzotriazolium-1-[bis(dimethylamino)methylene]-5-chloro-hexafluorophosphate-(1)-3-oxide
(HCTU) were purchased from Auspep (Melbourne, Australia). Fmoc-Dab(Boc)-OH
and Fmoc-Dab(ivDde)-OH were obtained from Chem-Impex International
(USA). Fmoc-Thr(tBu)-OH was from Mimotopes (Melbourne, Australia).
Fmoc-OctGly-OH was obtained from Try-lead Chem (China). Dimethylformamide
(DMF), methanol (MeOH), diethyl ether, dichloromethane (DCM), hydrochloric
acid, and acetonitrile were obtained from Merck (Melbourne, VIC, Australia),
and Fmoc-Thr(tBu)-TCP-Resin from Intavis Bioanyltical Instruments,
Germany. Dodecylphosphocholine (purity >99%) was purchased from
Avanti
Polar Lipids (USA, Alabama).
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5

Synthesis of Peptides with Fmoc Chemistry

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The general synthetic methodology used for the synthesis of the peptides has been previously described in detail elsewhere by our group.43 (link) The materials and synthesis protocol used are also presented below.
Piperidine, diisopropylethylamine (DIPEA) and trifluoroacetic acid (TFA) were purchased from Auspep (Melbourne, Australia). Fmoc-Dab(Boc)-OH, was purchased from Try-lead Chem (Hangzhou, China). Fmoc-d-Phe-OH, Fmoc-Dab(ivDde)-OH, 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) and 1H-benzotriazolium-1-[bis(dimethylamino)methylene]-5-chloro hexafluoro phosphate-(1-),3-oxide (HCTU) were purchased from Chem-Impex International (Wood Dale, IL, USA). Fmoc-Ala-OH, Fmoc-Leu-OH and Fmoc-Thr(tBu)-OH were purchased from Mimotopes (Melbourne, Australia). Dimethylformamide (DMF), methanol (MeOH), diethyl ether, dichloromethane (DCM), hydrochloric acid (HCl) and acetonitrile were purchased from Merck (Melbourne, Australia). Fmoc-Thr(tBu)-TCP-Resin was purchased from Intavis Bioanayltical Instruments (Germany). Triisopropylsilane (TIPS), 1,2-ethanedithiol (EDT), diphenylphosphorylazide (DPPA) and hydrazine were obtained from Sigma-Aldrich (Castle Hill, Australia).
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