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- W4225392314 abstract "Type IV pili (T4Ps) are a family of surface appendages that are important for adhesion, colonization, biofilm formation, virulence, twitching motility and many other functions. BfpU is an essential periplasmic protein of the T4P of Enteropathogenic Escherichia coli. Previous crosslinking and localization studies have shown that BfpU might interact with the outer membrane secretin BfpB, which is also essential for T4P biogenesis. To date, BfpU has no known homologs and its function is unknown. To purify BfpU, we performed affinity and size exclusion chromatography. Preliminary characterization of BfpU via thermal stability assay and circular dichroism suggests a melting temperature of 80 °C, and its secondary structure is comprised of ~40% anti-parallel β-sheet and ~45% random coil. The secondary structure profile is reminiscent of PilP, an essential periplasmic protein anchored in the membrane that interacts with secretins in other T4P systems. Additionally, random mutagenesis is in progress to assess essential residues of BfpU that may be involved in protein interactions within this T4P system. Single residue mutations from this mutagenesis screening will be used to confirm interaction sites within BfpU. The results of these studies will help clarify the role of BfpU in T4P biogenesis and its interactions with BfpB." @default.
- W4225392314 created "2022-05-05" @default.
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- W4225392314 date "2022-05-01" @default.
- W4225392314 modified "2023-09-27" @default.
- W4225392314 title "Characterizing BfpU, an Essential Protein in the Type IV Pilus of Enteropathogenic <i>Escherichia coli</i>" @default.
- W4225392314 doi "https://doi.org/10.1096/fasebj.2022.36.s1.l7571" @default.
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