Abstract
Single-stranded DNA-binding proteins (SSBs) are essential to all living organisms as protectors and guardians of the genome. Apart from the well-characterized RPA, humans have also evolved two further SSBs, termed hSSB1 and hSSB2. Over the last few years, we have used NMR spectroscopy to determine the molecular and structural details of both hSSBs and their interactions with DNA and RNA. Here we provide a detailed overview of how to express and purify recombinant versions of these important human proteins for the purpose of detailed structural analysis by high-resolution solution-state NMR.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Similar content being viewed by others
References
Dickey TH, Altschuler SE, Wuttke DS (2013) Single-stranded DNA-binding proteins: multiple domains for multiple functions. Structure 21:1074–1084. https://doi.org/10.1016/j.str.2013.05.013
Croft LV et al (2018) Human single-stranded DNA binding protein 1 (hSSB1, OBFC2B), a critical component of the DNA damage response. Semin Cell Dev Biol 86:121–128. https://doi.org/10.1016/j.semcdb.2018.03.014
Lawson T, El-Kamand S, Kariawasam R, Richard DJ, Cubeddu L, Gamsjaeger R (2019) A structural perspective on the regulation of human single-stranded DNA binding protein 1 (hSSB1, OBFC2B) function in DNA repair. Comput Struct Biotechnol J 17:441–446. https://doi.org/10.1016/j.csbj.2019.03.014
Bieri M, Kwan AH, Mobli M, King GF, Mackay JP, Gooley PR (2011) Macromolecular NMR spectroscopy for the non-spectroscopist: beyond macromolecular solution structure determination. FEBS J 278:704–715. https://doi.org/10.1111/j.1742-4658.2011.08005.x
Kaptein R (2013) NMR studies on protein-nucleic acid interaction. J Biomol NMR 56:1–2. https://doi.org/10.1007/s10858-013-9736-8
Kwan AH, Mobli M, Gooley PR, King GF, Mackay JP (2011) Macromolecular NMR spectroscopy for the non-spectroscopist. FEBS J 278:687–703. https://doi.org/10.1111/j.1742-4658.2011.08004.x
O’Connell MR, Gamsjaeger R, Mackay JP (2009) The structural analysis of protein-protein interactions by NMR spectroscopy. Proteomics 9:5224–5232. https://doi.org/10.1002/pmic.200900303
Kariawasam R, Knight M, Gamsjaeger R, Cubeddu L (2018) Backbone 1H, 13C and 15N resonance assignments of the OB domain of the single stranded DNA-binding protein hSSB2 (NABP1/OBFC2A) and chemical shift mapping of the DNA-binding interface. Biomol NMR Assign 12:107–111. https://doi.org/10.1007/s12104-017-9789-9
Kariawasam R, Touma C, Cubeddu L, Gamsjaeger R (2016) Backbone (1)H, (13)C and (15)N resonance assignments of the OB domain of the single stranded DNA-binding protein hSSB1 (NABP2/OBFC2B) and chemical shift mapping of the DNA-binding interface. Biomol NMR Assign 10:297–300. https://doi.org/10.1007/s12104-016-9687-6
Lawson T et al (2020) The structural details of the interaction of single-stranded DNA binding protein hSSB2 (NABP1/OBFC2A) with UV-damaged DNA. Proteins 88:319–326. https://doi.org/10.1002/prot.25806
Morten MJ, Gamsjaeger R, Cubeddu L, Kariawasam R, Peregrina J, Penedo JC, White MF (2017) High-affinity RNA binding by a hyperthermophilic single-stranded DNA-binding protein. Extremophiles 21:369–379. https://doi.org/10.1007/s00792-016-0910-2
Touma C et al (2017) A data-driven structural model of hSSB1 (NABP2/OBFC2B) self-oligomerization. Nucleic Acids Res 45:8609–8620. https://doi.org/10.1093/nar/gkx526
Touma C et al (2016) A structural analysis of DNA binding by hSSB1 (NABP2/OBFC2B) in solution. Nucleic Acids Res 44:7963–7973. https://doi.org/10.1093/nar/gkw617
Paquet N et al (2016) hSSB1 (NABP2/OBFC2B) is regulated by oxidative stress. Sci Rep 6:27446. https://doi.org/10.1038/srep27446
Acknowledgment
We would like to thank Dr. Ann Kwan from the University of Sydney for expert advice and maintenance of NMR spectrometers.
Author information
Authors and Affiliations
Corresponding authors
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2021 Springer Science+Business Media, LLC, part of Springer Nature
About this protocol
Cite this protocol
El-Kamand, S., Du Plessis, MD., Lawson, T., Cubeddu, L., Gamsjaeger, R. (2021). Expression, Purification, and Solution-State NMR Analysis of the Two Human Single-Stranded DNA-Binding Proteins hSSB1 (NABP2/OBFC2B) and hSSB2 (NAPB1/OBFC2A). In: Oliveira, M.T. (eds) Single Stranded DNA Binding Proteins. Methods in Molecular Biology, vol 2281. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-1290-3_14
Download citation
DOI: https://doi.org/10.1007/978-1-0716-1290-3_14
Published:
Publisher Name: Humana, New York, NY
Print ISBN: 978-1-0716-1289-7
Online ISBN: 978-1-0716-1290-3
eBook Packages: Springer Protocols