PMID- 36068014 OWN - NLM STAT- MEDLINE DCOM- 20221010 LR - 20221108 IS - 1535-3907 (Electronic) IS - 1535-3893 (Print) IS - 1535-3893 (Linking) VI - 21 IP - 10 DP - 2022 Oct 7 TI - Deep Single-Shot NanoLC-MS Proteome Profiling with a 1500 Bar UHPLC System, Long Fully Porous Columns, and HRAM MS. PG - 2545-2551 LID - 10.1021/acs.jproteome.2c00270 [doi] AB - This study demonstrates how the latest ultrahigh-performance liquid chromatography (UHPLC) technology can be combined with high-resolution accurate-mass (HRAM) mass spectrometry (MS) and long columns packed with fully porous particles to improve bottom-up proteomics analysis with nanoflow liquid chromatography-mass spectrometry (nanoLC-MS) methods. The increased back pressures from the UHPLC system enabled the use of 75 mum I.D. x 75 cm columns packed with 2 mum particles at a typical 300 nL/min flow rate as well as elevated and reduced flow rates. The constant pressure pump operation at 1500 bar reduced sample loading and column washing/equilibration stages and overall overhead time, which maximizes MS utilization time. The versatility of flow rate optimization to balance the sensitivity, throughput with sample loading amount, and capability of using longer gradients contributes to a greater number of peptide and protein identifications for single-shot bottom-up proteomics experiments. The routine proteome profiling and precise quantification of >7000 proteins with single-shot nanoLC-MS analysis open possibilities for large-scale discovery studies with a deep dive into the protein level alterations. Data are available via ProteomeXchange with identifier PXD035665. FAU - Zheng, Runsheng AU - Zheng R AUID- ORCID: 0000-0002-5433-2540 AD - Thermo Fisher Scientific, Dornierstrasse 4, 82110 Germering, Germany. FAU - Stejskal, Karel AU - Stejskal K AD - IMP horizontal line Institute of Molecular Pathology, Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria. AD - IMBA horizontal line Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Dr. Bohr Gasse 3, A-1030 Vienna, Austria. AD - Gregor Mendel Institute of Molecular Plant Biology of the Austrian Academy of Sciences, Dr. Bohr Gasse 3, A-1030 Vienna, Austria. FAU - Pynn, Christopher AU - Pynn C AD - Thermo Fisher Scientific, Dornierstrasse 4, 82110 Germering, Germany. FAU - Mechtler, Karl AU - Mechtler K AUID- ORCID: 0000-0002-3392-9946 AD - IMP horizontal line Institute of Molecular Pathology, Campus-Vienna-Biocenter 1, A-1030 Vienna, Austria. AD - IMBA horizontal line Institute of Molecular Biotechnology of the Austrian Academy of Sciences, Dr. Bohr Gasse 3, A-1030 Vienna, Austria. AD - Gregor Mendel Institute of Molecular Plant Biology of the Austrian Academy of Sciences, Dr. Bohr Gasse 3, A-1030 Vienna, Austria. FAU - Boychenko, Alexander AU - Boychenko A AUID- ORCID: 0000-0003-1765-170X AD - Thermo Fisher Scientific, Dornierstrasse 4, 82110 Germering, Germany. LA - eng GR - I 3686/FWF_/Austrian Science Fund FWF/Austria PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20220906 PL - United States TA - J Proteome Res JT - Journal of proteome research JID - 101128775 RN - 0 (Peptides) RN - 0 (Proteome) SB - IM MH - Chromatography, High Pressure Liquid/methods MH - Chromatography, Liquid MH - Mass Spectrometry MH - *Peptides/analysis MH - Porosity MH - *Proteome/analysis PMC - PMC9552226 OTO - NOTNLM OT - Orbitrap OT - UHPLC OT - bottom-up proteomics OT - high-resolution accurate-mass OT - long nanocolumns OT - nanoLC-MS OT - single-shot analysis COIS- The authors declare the following competing financial interest(s): Dr. Runsheng Zheng, Dr. Christoper Pynn, Dr. Alexander Boychenko are employees of Thermo Fisher Scientific. The other authors declare no competing financial interests. EDAT- 2022/09/07 06:00 MHDA- 2022/10/12 06:00 PMCR- 2022/10/11 CRDT- 2022/09/06 20:02 PHST- 2022/09/07 06:00 [pubmed] PHST- 2022/10/12 06:00 [medline] PHST- 2022/09/06 20:02 [entrez] PHST- 2022/10/11 00:00 [pmc-release] AID - 10.1021/acs.jproteome.2c00270 [doi] PST - ppublish SO - J Proteome Res. 2022 Oct 7;21(10):2545-2551. doi: 10.1021/acs.jproteome.2c00270. Epub 2022 Sep 6.