Structural basis for recognition of bacterial cell wall teichoic acid by pseudo-symmetric SH3b-like repeats of a viral peptidoglycan hydrolase
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Structural basis for recognition of bacterial cell wall teichoic acid by pseudo-symmetric SH3b-like repeats of a viral peptidoglycan hydrolase. / Shen, Yang; Kalograiaki, Ioanna; Prunotto, Alessio; Dunne, Matthew; Boulos, Samy; Taylor, Nicholas M.I.; Sumrall, Eric T.; Eugster, Marcel R.; Martin, Rebecca; Julian-Rodero, Alicia; Gerber, Benjamin; Leiman, Petr G.; Menéndez, Margarita; Peraro, Matteo Dal; Cañada, Francisco Javier; Loessner, Martin J.
In: Chemical Science, Vol. 12, No. 2, 2021, p. 576-589.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Structural basis for recognition of bacterial cell wall teichoic acid by pseudo-symmetric SH3b-like repeats of a viral peptidoglycan hydrolase
AU - Shen, Yang
AU - Kalograiaki, Ioanna
AU - Prunotto, Alessio
AU - Dunne, Matthew
AU - Boulos, Samy
AU - Taylor, Nicholas M.I.
AU - Sumrall, Eric T.
AU - Eugster, Marcel R.
AU - Martin, Rebecca
AU - Julian-Rodero, Alicia
AU - Gerber, Benjamin
AU - Leiman, Petr G.
AU - Menéndez, Margarita
AU - Peraro, Matteo Dal
AU - Cañada, Francisco Javier
AU - Loessner, Martin J.
PY - 2021
Y1 - 2021
N2 - Endolysins are bacteriophage-encoded peptidoglycan hydrolases targeting the cell wall of host bacteria via their cell wall-binding domains (CBDs). The molecular basis for selective recognition of surface carbohydrate ligands by CBDs remains elusive. Here, we describe, in atomic detail, the interaction between the Listeria phage endolysin domain CBD500 and its cell wall teichoic acid (WTA) ligands. We show that 3′O-acetylated GlcNAc residues integrated into the WTA polymer chain are the key epitope recognized by a CBD binding cavity located at the interface of tandem copies of beta-barrel, pseudo-symmetric SH3b-like repeats. This cavity consists of multiple aromatic residues making extensive interactions with two GlcNAc acetyl groups via hydrogen bonds and van der Waals contacts, while permitting the docking of the diastereomorphic ligands. Our multidisciplinary approach tackled an extremely challenging protein-glycopolymer complex and delineated a previously unknown recognition mechanism by which a phage endolysin specifically recognizes and targets WTA, suggesting an adaptable model for regulation of endolysin specificity. This journal is
AB - Endolysins are bacteriophage-encoded peptidoglycan hydrolases targeting the cell wall of host bacteria via their cell wall-binding domains (CBDs). The molecular basis for selective recognition of surface carbohydrate ligands by CBDs remains elusive. Here, we describe, in atomic detail, the interaction between the Listeria phage endolysin domain CBD500 and its cell wall teichoic acid (WTA) ligands. We show that 3′O-acetylated GlcNAc residues integrated into the WTA polymer chain are the key epitope recognized by a CBD binding cavity located at the interface of tandem copies of beta-barrel, pseudo-symmetric SH3b-like repeats. This cavity consists of multiple aromatic residues making extensive interactions with two GlcNAc acetyl groups via hydrogen bonds and van der Waals contacts, while permitting the docking of the diastereomorphic ligands. Our multidisciplinary approach tackled an extremely challenging protein-glycopolymer complex and delineated a previously unknown recognition mechanism by which a phage endolysin specifically recognizes and targets WTA, suggesting an adaptable model for regulation of endolysin specificity. This journal is
U2 - 10.1039/d0sc04394j
DO - 10.1039/d0sc04394j
M3 - Journal article
C2 - 34163788
AN - SCOPUS:85099725495
VL - 12
SP - 576
EP - 589
JO - Chemical Science
JF - Chemical Science
SN - 2041-6520
IS - 2
ER -
ID: 256882397