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Abnormal protein aggregation and precipitation are associated with the perturbation of cellular function and underlie a variety of neurodegenerative diseases. S. cerevisiae SERF (ScSERF), a homolog of modifier of aggregation-4 (MOAG-4) and small EDRK-rich factor protein (SERF1a) is highly conserved and discovered as an enhancer of amyloid formation of Aβ40 and α-synuclein both in vitro and in vivo. However, the detailed molecular mechanism whereby ScSERF and its homologs accelerate amyloid formation is not well known yet. Herein, we present the 1 H, 15 N and 13 C NMR assignments of the 68 amino acids long ScSERF. Although ScSERF displays a very high degree of disorder, secondary chemical shifts of Cα, Cβ, 15 N{1 H}-NOE values and the residue-specific secondary structure propensity (SSP) scores indicate the segment spanning residues 36E-65 K has a strong helical propensity. This work sets the stage for further detailed structural and dynamic investigations of ScSERF and the molecular mechanism it utilizes in accelerating amyloid formation.
Biomolecular NMR Assignments – Springer Journals
Published: Oct 1, 2022
Keywords: ScSERF; NMR; Assignments; Intrinsically disordered protein
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