2023
Vibrio cholerae biofilms use modular adhesins with glycan-targeting and nonspecific surface binding domains for colonization
Huang X, Nero T, Weerasekera R, Matej K, Hinbest A, Jiang Z, Lee R, Wu L, Chak C, Nijjer J, Gibaldi I, Yang H, Gamble N, Ng W, Malaker S, Sumigray K, Olson R, Yan J. Vibrio cholerae biofilms use modular adhesins with glycan-targeting and nonspecific surface binding domains for colonization. Nature Communications 2023, 14: 2104. PMID: 37055389, PMCID: PMC10102183, DOI: 10.1038/s41467-023-37660-0.Peer-Reviewed Original ResearchConceptsBiofilm matrix exopolysaccharideFacilitate host colonizationVibrio cholerae biofilmsΒ-propeller domainMatrix exopolysaccharideModular domainsHost colonizationRedundant rolesDistinct functionsAbiotic surfacesAdhesive proteinsHost surfaceHuman pathogensVibrio choleraeAdhesinsBacterial biofilmsHost tissuesColonization modelColonizationBAP1BiofilmsPathogensAntibiotic resistanceRBMCDomain
2022
A previously uncharacterized O-glycopeptidase from Akkermansia muciniphila requires the Tn-antigen for cleavage of the peptide bond
Medley BJ, Leclaire L, Thompson N, Mahoney KE, Pluvinage B, Parson MAH, Burke JE, Malaker S, Wakarchuk W, Boraston AB. A previously uncharacterized O-glycopeptidase from Akkermansia muciniphila requires the Tn-antigen for cleavage of the peptide bond. Journal Of Biological Chemistry 2022, 298: 102439. PMID: 36049519, PMCID: PMC9513282, DOI: 10.1016/j.jbc.2022.102439.Peer-Reviewed Original ResearchMeSH KeywordsAkkermansiaBacterial ProteinsHumansMucinsPeptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine AmidasePolymerizationPolysaccharidesConceptsUncharacterized proteinsCarbohydrate-binding moduleHuman gut microbiotaHost adaptationSubstrate recognitionCatalytic motifN-terminalHost healthGut environmentPeptidase activityHost mucinsNutrient sourceAkkermansia muciniphilaEnzymeKey membersPeptide bondProteinBacteriumActive siteGut microbiotaTn antigenPeptide backboneGenesMicrobes
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