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Functional expression, purification, biochemical and biophysical characterizations, and molecular dynamics simulation of a histidine acid phosphatase from Saccharomyces cerevisiae

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Abstract

A histidine acid phosphatase (HAP) (PhySc) with 99.50% protein sequence similarity with PHO5 from Saccharomyces cerevisiae was expressed functionally with the molecular mass of ∼110 kDa through co-expression along with the set of molecular chaperones dnaK, dnaJ, GroESL. The purified HAP illustrated the optimum activity of 28.75 ± 0.39 U/mg at pH 5.5 and 40 ˚C. The Km and Kcat values towards calcium phytate were 0.608 ± 0.09 mM and 650.89 ± 3.6 s− 1. The half-lives (T1/2) at 55 and 60 ˚C were 2.75 min and 55 s, respectively. The circular dichroism (CD) demonstrated that PhySc includes 30.5, 28.1, 21.3, and 20.1% of random coils, α-Helix, β-Turns, and β-Sheet, respectively. The Tm recorded by CD for PhySc was 56.5 ± 0.34˚C. The molecular docking illustrated that His59 and Asp322 act as catalytic residues in the PhySc. MD simulation showed that PhySc at 40 ˚C has higher structural stability over those of the temperatures 60 and 80 ˚C that support the thermodynamic in vitro investigations. Secondary structure content results obtained from MD simulation indicated that PhySc consists of 34.03, 33.09, 17.5, 12.31, and 3.05% of coil, helix, turn, sheet, and helix310, respectively, which is almost consistent with the experimental results.

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Funding

This work has received funding from Ministry of Higher Education (MOHE) under Fundamental Research Grant Scheme (FRGS/1/2019/STG05/UPM/02/15).

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NGN and TCL conceived, designed and wrote the manuscript. NGN performed the research, tabulated, and analyzed the data. SZBJ, RNZRA, NMY, SNO, FMS, and NMI contributed for providing the materials and chemicals.

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Correspondence to Thean Chor Leow.

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Nezhad, N.G., Jamaludin, S.Z.B., Rahman, R.N.Z.R.A. et al. Functional expression, purification, biochemical and biophysical characterizations, and molecular dynamics simulation of a histidine acid phosphatase from Saccharomyces cerevisiae. World J Microbiol Biotechnol 40, 171 (2024). https://doi.org/10.1007/s11274-024-03970-8

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  • DOI: https://doi.org/10.1007/s11274-024-03970-8

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