Log in

Enrichment and application of extracellular nonulosonic acids containing polymers of Accumulibacter

  • Environmental Biotechnology
  • Published:
Applied Microbiology and Biotechnology Aims and scope Submit manuscript

Abstract

Pseudaminic and legionaminic acids are a subgroup of nonulosonic acids (NulOs) unique to bacterial species. There is a lack of advances in the study of these NulOs due to their complex synthesis and production. Recently, it was seen that “Candidatus Accumulibacter” can produce Pse or Leg analogues as part of its extracellular polymeric substances (EPS). In order to employ a “Ca. Accumulibacter” enrichment as production platform for bacterial sialic acids, it is necessary to determine which fractions of the EPS of “Ca. Accumulibacter” contain NulOs and how to enrich and/or isolate them. We extracted the EPS from granules enriched with “Ca. Accumulibcater” and used size-exclusion chromatography (SEC) to separate them into different molecular weight (MW) fractions. This separation resulted in two high molecular weight (> 5500 kDa) fractions dominated by polysaccharides, with a NulO content up to 4 times higher than the extracted EPS. This suggests that NulOs in “Ca. Accumulibacter” are likely located in high molecular weight polysaccharides. Additionally, it was seen that the extracted EPS and the NulO-rich fractions can bind and neutralize histones. This opens the possibility of EPS and NulO-rich fractions as potential source for sepsis treatment drugs.

Key points

NulOs in “Ca. Accumulibacter” are likely located in high MW polysaccharides

SEC allows to obtain high MW polysaccharide-rich fractions enriched with NulOs

EPS and the NulOs-rich fractions are a potential source for sepsis treatment drugs

This is a preview of subscription content, log in via an institution to check access.

Access this article

Subscribe and save

Springer+ Basic
EUR 32.99 /Month
  • Get 10 units per month
  • Download Article/Chapter or Ebook
  • 1 Unit = 1 Article or 1 Chapter
  • Cancel anytime
Subscribe now

Buy Now

Price includes VAT (France)

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

Availability of data and material

The data generated and/or analyzed during the current study are included in this article and its supplementary material. Sequences obtained are deposited under the Bioproject accession number PRJNA887943 in the NCBI database.

Code availability

Not applicable.

References

Download references

Funding

This work is part of the research project “Nature inspired biopolymer nanocomposites towards a cyclic economy” (Nanocycle) funded by the program Closed cycles – Transition to a circular economy (grant no. ALWGK.2016.025) of the Earth and Life Sciences Division of the Dutch Research Council (NWO).

Author information

Authors and Affiliations

Authors

Contributions

STM and YL planned the research based on intensive discussions among all the authors. STM and LMC performed most of the laboratory work. MP conducted the mass spectrometry analysis. STM interpreted the data with support of YL, MvL, and YL. STM and YL played major roles in drafting and writing the manuscript with input of DW and MvL. All authors read and approved the manuscript.

Corresponding author

Correspondence to Sergio Tomás-Martínez.

Ethics declarations

Ethical approval

Not applicable.

Patient consent

Not applicable.

Conflict of interest

The authors declare no competing interests.

Additional information

Publisher's note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Supplementary Information

Below is the link to the electronic supplementary material.

Supplementary file1 (PDF 291 KB)

Rights and permissions

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Tomás-Martínez, S., Chen, L.M., Pabst, M. et al. Enrichment and application of extracellular nonulosonic acids containing polymers of Accumulibacter. Appl Microbiol Biotechnol 107, 931–941 (2023). https://doi.org/10.1007/s00253-022-12326-x

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00253-022-12326-x

Keywords

Navigation