6E7I

Human ppGalNAcT2 I253A/L310A Mutant with EA2 and UDP

Summary for 6E7I

• Entry DOI: 10.2210/pdb6e7i/pdb
• Descriptor: Polypeptide N-acetylgalactosaminyltransferase 2, EA2, URIDINE-5'-DIPHOSPHATE, ... (5 entities in total)
• Functional Keywords: glycosyltransferase, glycosylation, bump-hole, galnac, transferase
• Biological source: Homo sapiens (Human); More
• Total number of polymer chains: 2
• Total formula weight: 62447.64

Authors

Bertozzi, C.R.,Schumann, B.,Agbay, A.J. (deposition date: 2018-07-26, release date: 2020-01-29, Last modification date: 2024-10-16)

Primary citation

Schumann, B.,Malaker, S.A.,Wisnovsky, S.P.,Debets, M.F.,Agbay, A.J.,Fernandez, D.,Wagner, L.J.S.,Lin, L.,Li, Z.,Choi, J.,Fox, D.M.,Peh, J.,Gray, M.A.,Pedram, K.,Kohler, J.J.,Mrksich, M.,Bertozzi, C.R.
Bump-and-Hole Engineering Identifies Specific Substrates of Glycosyltransferases in Living Cells.
Mol.Cell, 78:824-834.e15, 2020

PubMed Abstract: Studying posttranslational modifications classically relies on experimental strategies that oversimplify the complex biosynthetic machineries of living cells. Protein glycosylation contributes to essential biological processes, but correlating glycan structure, underlying protein, and disease-relevant biosynthetic regulation is currently elusive. Here, we engineer living cells to tag glycans with editable chemical functionalities while providing information on biosynthesis, physiological context, and glycan fine structure. We introduce a non-natural substrate biosynthetic pathway and use engineered glycosyltransferases to incorporate chemically tagged sugars into the cell surface glycome of the living cell. We apply the strategy to a particularly redundant yet disease-relevant human glycosyltransferase family, the polypeptide N-acetylgalactosaminyl transferases. This approach bestows a gain-of-chemical-functionality modification on cells, where the products of individual glycosyltransferases can be selectively characterized or manipulated to understand glycan contribution to major physiological processes.

PubMed: 32325029
DOI: 10.1016/j.molcel.2020.03.030

Experimental method

X-RAY DIFFRACTION (1.8 Å)