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. 2024 May 2;12:1396268. doi: 10.3389/fbioe.2024.1396268

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Copyright © 2024 Gharabli and Welner.

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The residues which have been reported to be important for UDP-sugar donor specificity, displayed in PDB: 6SU6. (A) An overview of the residues displayed as dot spheres representing the van der Waals surface area. Each color corresponds to a specific area: blue indicates the N5 loop, magenta indicates the PSPG motif, and yellow indicates residues near the cavity entrance. (B) A close-up view of the N5 loop area. (C) A close-up view of the PSPG motif area. (D) A close-up view of the residues close to the cavity entrance. “P” refers to the position in the corresponding UGT or PSPG motif mentioned in parentheses.