Universality of critical active site glutamate as an acid–base catalyst in serine hydroxymethyltransferase function

Author:

Drago Victoria N.1ORCID,Phillips Robert S.23ORCID,Kovalevsky Andrey1ORCID

Affiliation:

1. Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA

2. Department of Chemistry, University of Georgia, Athens, GA, 30602, USA

3. Department of Biochemistry and Molecular Biology, University of Georgia, Athens, GA, 30602, USA

Abstract

Neutron crystallography revealed protonation states in TthSHMT-FA complex. Glu53 is protonated but other residues maintain protonation states upon FA binding. Structural analyses support key roles of Glu53 and gating loop dynamics in SHMT function.

Funder

National Institute of General Medical Sciences

Biological and Environmental Research

Office of Science

U.S. Department of Energy

Argonne National Laboratory

Publisher

Royal Society of Chemistry (RSC)

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