Prideapplication/xmlftp://ftp.pride.ebi.ac.uk/pride/data/archive/2026/03/PXD051341/MQ_output_plasma.txtftp://ftp.pride.ebi.ac.uk/pride/data/archive/2026/03/PXD051341/MQ_output_BALF.txtftp://ftp.pride.ebi.ac.uk/pride/data/archive/2026/03/PXD051341/metadata_BALF_plasma.txtftp://ftp.pride.ebi.ac.uk/pride/data/archive/2026/03/PXD051341/Chicago_Serum.zipftp://ftp.pride.ebi.ac.uk/pride/data/archive/2026/03/PXD051341/Chicago_BALF.zipprimaryOK200herbert.schiller@helmholtz-munich.deAnna SemenovaData-dependent acquisitionMass SpectrometryBottom-up proteomicsBacterial PneumoniaCovid-19InfluenzaPlasmaPneumoniaCovid-19Balfhttps://www.ebi.ac.uk/pride/archive/projects/PXD051341Blood PlasmaBronchoalveolar LavagePlasma samples of the Chicago cohort were preprocessed for mass spectrometry analysis using automated workflow6. Serum/plasma proteins in a 96-well format were denatured, alkylated, and digested with Trypsin and LysC, and peptides were purified using an automated liquid handling platform (Agilent Bravo, USA). Additionally, 20 serum samples were pooled and fractioned into 24 fractions using high pH‐reversed phase liquid chromatography for spectral library generation, which was used as a reference to identify proteins in the other samples. BALF samples of the Chicago cohort were denatured with 4% SDS in Tris-HCL solution at 99 °C and further processed using the Protein Aggregation Capture (PAC) protocol7. Stage tipping was performed to purify the peptides with three layers of Octadecyl-bonded silica (C18)(Mayr et al. 2021). Peptides were stored in the -20°C freezer until mass spectrometry was analyzed.PrideNot availableThe MaxQuant software (version 1.6.17.010) was employed to analyze the mass spectrometry raw files of BALF and plasma from the Chicago cohort. MS spectra were matched against the UniProt reference proteome FASTA file downloaded in January 2022. A contaminant database, generated by the Andromeda search engine, and the human database were configured with cysteine carbamidomethylation as a fixed modification and N‐terminal acetylation and methionine oxidation as variable modifications. The false discovery rate (FDR) was set at 0.01 for protein and peptide levels, with a minimum peptide length of seven amino acids. FDR determination involved searching a reversed sequence database. Enzyme specificity, expected to be C‐terminal to arginine and lysine, was configured to trypsin and LysC proteases. Up to two missed cleavages were allowed, and proteins and peptides matching the reversed database were excluded. The mass tolerance for the main precursor search was set to 20 ppm, and a minimum of one peptide was required for protein quantification.ProteomicsDr. HerbertPARTIALDirector, Research Unit for Precision Regenerative Medicine, Helmholtz Munich Professor, Systems Biology of Airways and Lungs, Ludwig-Maximilians University (LMU) Munich Comprehensive Pneumology Center Munich (CPC-M), Member of the German Center for Lung Research (DZL)Homo Sapiens (human)Not availableanna.semenova@helmholtz-munich.deHelmholtz Munich, Institute of Lung Health and ImmunityGermanyfalseProteomic profiling of severe pneumonia fluidsBALF and plasma proteomic profiling from the Clinical Response in Pneumonia Therapy (SCRIPT) study which aims to improve treatment strategies for patients with severe pneumonia. The samples were obtained during the early stages of the COVID-19 pandemic (June 15th, 2018 - JulClinical Response in Pneumonia Therapy (SCRIPT) study which aims to improve treatment strategies for patients with severe pneumonia. The samples were obtained during the early stages of the COVID-19 pandemic (June 15th, 2018 - July 6th, 2020) and included patients facing respiratory failure requiring mechanical ventilation in the intensive care unit (ICU).2026-03-302024-04-10PXD051341NEWT:6945NEWT:3555NEWT:2NEWT:157546NEWT:35554NEWT:38942NEWT:307972NEWT:32046NEWT:544496NEWT:2042546NEWT:45351NEWT:43179NEWT:4513NEWT:5722NEWT:55153NCBITaxon:10407NEWT:1736309NEWT:1211601NEWT:876138NEWT:237561NEWT:5833NEWT:6928NEWT:10036NEWT:36745NEWT:1351NEWT:1438992NEWT:2649997NEWT:272563NEWT:224326NCBITaxon:79857NEWT:1096976NEWT:95648NEWT:3885NEWT:3888NEWT:1589NEWT:135622NEWT:6915NEWT:3649NEWT:101510NEWT:3880NEWT:272559NEWT:3641NEWT:383379NEWT:10029NEWT:1000589NEWT:85962NEWT:317447NEWT:7955NEWT:7959NEWT:2261NEWT:31156NEWT:4565NEWT:1264690NEWT:515619NEWT:192875NEWT:34305NEWT:59729NCBITaxon:183674NEWT:224308NEWT:84645NEWT:626528NEWT:139927NEWT:4558NEWT:209285NEWT:1283NEWT:931281NEWT:4550NEWT:1000561NEWT:197NCBITaxon:79824NEWT:4787NCBITaxon:4563NEWT:5755NEWT:44689NEWT:3218NEWT:5759NEWT:1736231NEWT:1270NEWT:2242NEWT:4784NEWT:11320NEWT:360106NEWT:287NEWT:10117NEWT:10239NEWT:10116NEWT:1280NEWT:1735272NEWT:83334NEWT:83332NEWT:44685NEWT:317513NEWT:1148NEWT:580240NEWT:294128NEWT:11676NEWT:55571NEWT:100226NEWT:4530NEWT:4896NEWT:75058NEWT:13616NEWT:1094343NEWT:296543NEWT:1773NEWT:1895NEWT:1182590NEWT:935293NEWT:64152NEWT:4924NEWT:749200NEWT:990346NEWT:145953NEWT:257309NEWT:100816NEWT:263NEWT:230741NEWT:52283NEWT:284812NCBITaxon:1313NEWT:43330NEWT:408169NEWT:44544NEWT:4911NEWT:645463NEWT:3702NEWT:129249NEWT:990119NEWT:408172NEWT:408170NEWT:493760NEWT:260710NEWT:257313NEWT:400772NEWT:3708NEWT:128161NEWT:332648NEWT:106592NEWT:536231NEWT:1432138NEWT:10312NEWT:1424507NCBITaxon:1773NEWT:9598NEWT:8030NEWT:1639NEWT:188229NEWT:3818NEWT:480NEWT:4909NEWT:67767NEWT:432359NEWT:46835NEWT:2711NEWT:376686NEWT:95486NEWT:9103NEWT:29159NEWT:10306NCBITaxon:2759NEWT:1233435NEWT:8022NEWT:145943NCBITaxon:4932NEWT:595536NEWT:240906NEWT:593117NEWT:3635NEWT:5811NEWT:235443NEWT:411483NEWT:884019NEWT:198215NEWT:411490NEWT:983964NEWT:169963NEWT:499175NEWT:476272NEWT:3747NEWT:367830NEWT:178616NEWT:410289NEWT:373153NEWT:352472NEWT:360094NEWT:470NEWT:1313NEWT:411469NEWT:84023NEWT:559292NCBITaxon:5811NEWT:411464NEWT:411460NEWT:2762NEWT:1174673NEWT:562NEWT:411470NEWT:33952NEWT:2094720NCBITaxon:2697049NEWT:28038NEWT:1423NEWT:4932NEWT:3603NEWT:2759NEWT:3847NEWT:327159NEWT:178876NEWT:327160NEWT:573NEWT:9031NEWT:7091NEWT:241368NEWT:42528NEWT:190802NEWT:9778NEWT:150475NEWT:9417NEWT:7111NEWT:347515NEWT:1216979NEWT:5180NEWT:256737NEWT:115104NEWT:1081927NEWT:1238993NEWT:67825NEWT:185579NEWT:13076NEWT:1249668NEWT:317NEWT:7227NEWT:7469NEWT:885318NEWT:9402NEWT:415540NEWT:4081NEWT:554NEWT:98334NEWT:426428NEWT:7574NEWT:7215NEWT:575412NEWT:29204NEWT:2172103NEWT:507601NCBITaxon:6157NEWT:746360NEWT:6239NEWT:470150NEWT:216257NEWT:9986NEWT:4054NEWT:73239NEWT:226186NEWT:1268063NEWT:8782NEWT:1263854NEWT:435590NEWT:1902NEWT:160488NEWT:28104NCBITaxon:2NEWT:985076NEWT:1215323NEWT:52641NEWT:7038NEWT:6192NEWT:28532NCBITaxon:38727NEWT:2829NEWT:216599NEWT:216595NEWT:243230NEWT:8355NEWT:9685NEWT:7029NEWT:1080772NEWT:1283300NEWT:6183NEWT:6063NEWT:334747NEWT:61235NEWT:6289NEWT:436486NEWT:6287NEWT:300641NEWT:727NEWT:9796NEWT:725NEWT:170187NEWT:260707NCBITaxon:6191NEWT:1836NEWT:185431NEWT:29760NEWT:260704NEWT:703612NEWT:260705NEWT:80863NEWT:2697049NCBITaxon:6073NEWT:884204NEWT:6279NEWT:1123869NEWT:9544NEWT:7370NEWT:83906NEWT:607699NEWT:6282NEWT:208964NEWT:1134506NEWT:575584NEWT:38783NEWT:8727NEWT:4006NEWT:8726NEWT:6426NEWT:6669NEWT:10090NEWT:4120NEWT:51515NEWT:5693NEWT:8724NEWT:51511NEWT:92867NEWT:8723NEWT:5334NEWT:37334NEWT:382352NCBITaxon:10359NEWT:242619NEWT:632957NEWT:373995NEWT:544404NEWT:9925NEWT:8839NEWT:4232NEWT:2758385NEWT:4113NEWT:837NEWT:11298NEWT:171101NEWT:714NEWT:421932NEWT:196627NEWT:5691NEWT:48479NEWT:627025NEWT:1097677NEWT:61674NEWT:1117957NEWT:9913NEWT:4100NEWT:1076NEWT:6763NEWT:803NEWT:29722NEWT:380394NEWT:1692259NEWT:180066NEWT:135588NEWT:1843183NEWT:58002NEWT:326423NEWT:4577NEWT:1416333NEWT:5664NEWT:2157NEWT:418985NEWT:146479NEWT:1911079NEWT:264203NEWT:1480154NEWT:1274414NEWT:27606NEWT:59202NEWT:9975NEWT:9612NEWT:38865NEWT:51953NEWT:3197NEWT:9615NEWT:10299NEWT:860688NEWT:36329NEWT:1147787NCBITaxon:3044782NEWT:72407NEWT:349741NEWT:9605NEWT:9606NEWT:157295NEWT:641501NEWT:7668NEWT:915099NEWT:74940NEWT:9721NEWT:137221NEWT:1450511NEWT:1143193NEWT:411901NEWT:9838NEWT:105884NCBITaxon:9615NEWT:58334NEWT:1193501NEWT:3055NEWT:6326NEWT:6689NEWT:5476NEWT:1274432NEWT:1274426NEWT:70448NEWT:9825NEWT:1274423NEWT:393765NEWT:698936NEWT:39946NEWT:9823NEWT:9940NEWT:521001NEWT:39947NEWT:1274420NEWT:5784580000-0001-8476-2341