2021
Classification, structural biology, and applications of mucin domain-targeting proteases
Shon DJ, Kuo A, Ferracane MJ, Malaker SA. Classification, structural biology, and applications of mucin domain-targeting proteases. Biochemical Journal 2021, 478: 1585-1603. PMID: 33909028, DOI: 10.1042/bcj20200607.Peer-Reviewed Original ResearchConceptsClass of proteinsHost-microbe interfaceImmunoglobulin A (IgA) proteaseThreonine residuesGlycan repertoireStructural biologyDistinct bacteriaGlycan structuresSource of nutrientsHinge regionProteaseIgA proteaseIntricate interplayMucosal environmentColonizationStructural featuresMutualistsMucosal colonizationEpithelial surfaceBacterial colonizationMicrobesTranslocation of microbes
2020
Metabolic precision labeling enables selective probing of O-linked N-acetylgalactosamine glycosylation
Debets MF, Tastan OY, Wisnovsky SP, Malaker SA, Angelis N, Moeckl LKR, Choi J, Flynn H, Wagner LJS, Bineva-Todd G, Antonopoulos A, Cioce A, Browne WM, Li Z, Briggs DC, Douglas HL, Hess GT, Agbay AJ, Roustan C, Kjaer S, Haslam SM, Snijders AP, Bassik MC, Moerner WE, Li VSW, Bertozzi CR, Schumann B. Metabolic precision labeling enables selective probing of O-linked N-acetylgalactosamine glycosylation. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 25293-25301. PMID: 32989128, PMCID: PMC7568240, DOI: 10.1073/pnas.2007297117.Peer-Reviewed Original ResearchConceptsStructure-based design processN-acetylgalactosamine glycosylationProtein glycosylation eventsCell surface glycoproteomeCRISPR knockout screensMetabolic labeling experimentsGlycan subtypesGlycosylation eventsSecretory pathwayGalNAc glycosylationProtein glycosylationEctopic expressionSer/GalNAc-T2Superresolution microscopyGlycan typesLiving cellsBioorthogonal tagsGlycosylationIntestinal organoidsMetabolic interconversionSuch specificityUridine diphosphateLabeling experimentsCells
2019
Engineering Orthogonal Polypeptide GalNAc-Transferase and UDP-Sugar Pairs
Choi J, Wagner LJS, Timmermans SBPE, Malaker SA, Schumann B, Gray MA, Debets MF, Takashima M, Gehring J, Bertozzi CR. Engineering Orthogonal Polypeptide GalNAc-Transferase and UDP-Sugar Pairs. Journal Of The American Chemical Society 2019, 141: 13442-13453. PMID: 31373799, PMCID: PMC6813768, DOI: 10.1021/jacs.9b04695.Peer-Reviewed Original ResearchThe mucin-selective protease StcE enables molecular and functional analysis of human cancer-associated mucins
Malaker SA, Pedram K, Ferracane MJ, Bensing BA, Krishnan V, Pett C, Yu J, Woods EC, Kramer JR, Westerlind U, Dorigo O, Bertozzi CR. The mucin-selective protease StcE enables molecular and functional analysis of human cancer-associated mucins. Proceedings Of The National Academy Of Sciences Of The United States Of America 2019, 116: 7278-7287. PMID: 30910957, PMCID: PMC6462054, DOI: 10.1073/pnas.1813020116.Peer-Reviewed Original ResearchConceptsModular protein domainsProtein domainsSecreted proteinsMucin domainFunctional analysisHuman diseasesMucin biologyGlycosylation patternsCultured cellsMolecular levelCell surfaceSequence coverageKey playersBacterial proteasesCancer-associated mucinsDiscrete peptidesBiological ligandsProteaseHuman mucinsGlycoform analysisStcESiglec-9Domain structureMass spectrometryDomain