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• W4377987510 abstract "Protein phosphorylation is an integral part of many cellular processes, not only in eukaryotes but also in bacteria. The discovery of both prokaryotic protein kinases and phosphatases has created interest in generating antibacterial therapeutics that target these enzymes. NMA1982 is a putative phosphatase from Neisseria meningitidis , the causative agent of meningitis and meningococcal septicemia. The overall fold of NMA1982 closely resembles that of protein tyrosine phosphatases (PTPs). However, the hallmark C(X) 5 R PTP signature motif, containing the catalytic cysteine and invariant arginine, is shorter by one amino acid in NMA1982. This has cast doubt about the catalytic mechanism of NMA1982 and its assignment to the PTP superfamily. Here, we demonstrate that NMA1982 indeed employs a catalytic mechanism that is specific to PTPs. Mutagenesis experiments, transition state inhibition, pH-dependence activity, and oxidative inactivation experiments all support that NMA1982 is a genuine phosphatase. Importantly, we show that NMA1982 is secreted by N. meningitidis , suggesting that this protein is a potential virulence factor. Future studies will need to address whether NMA1982 is indeed essential for N. meningitidis survival and virulence. Based on its unique active site conformation, NMA1982 may become a suitable target for developing selective antibacterial drugs." @default.
• W4377987510 created "2023-05-25" @default.
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• W4377987510 date "2023-05-23" @default.
• W4377987510 modified "2023-09-30" @default.
• W4377987510 title "NMA1982 is a Novel Phosphatase and Potential Virulence Factor in<i>Neisseria meningitidis</i>" @default.
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• W4377987510 doi "https://doi.org/10.1101/2023.05.23.541968" @default.
• W4377987510 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37292688" @default.
• W4377987510 hasPublicationYear "2023" @default.
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