Skip to main content

Advertisement

Log in

Prediction of substrate sites for protein phosphatases 1B, SHP-1, and SHP-2 based on sequence features

  • Original Article
  • Published:
Amino Acids Aims and scope Submit manuscript

Abstract

Tyrosine phosphorylation plays crucial roles in numerous physiological processes. The level of phosphorylation state depends on the combined action of protein tyrosine kinases and protein tyrosine phosphatases. Detection of possible phosphorylation and dephosphorylation sites can provide useful information to the functional studies of relevant proteins. Several studies have focused on the identification of protein tyrosine kinase substrates. However, compared with protein tyrosine kinases, the prediction of protein tyrosine phosphatase substrates involved in the balance of protein phosphorylation level falls behind. This paper described a method that utilized the k-nearest neighbor algorithm to identity the substrate sites of three protein tyrosine phosphatases based on the sequence features of manually collected dephosphorylation sites. In the performance evaluation, both sensitivities and specificities could reach above 75 % for all three protein tyrosine phosphatases. Finally, the method was applied on a set of known tyrosine phosphorylation sites to search for candidate substrates.

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

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5
Fig. 6

Similar content being viewed by others

Abbreviations

PTK:

Protein tyrosine kinase

PTP:

Protein tyrosine phosphatase

PTP1B:

Protein tyrosine phosphatase 1B

SHP-1:

Src homology 2 domain tyrosine phosphatase 1 (also known as SH-PTP1, src homology 2 domain protein tyrosine phosphatase 1)

SHP-2:

Src homology 2 domain tyrosine phosphatase 2 (also known as SH-PTP2, src homology 2 domain protein tyrosine phosphatase 2)

References

Download references

Acknowledgments

We thank Dr. Pufeng Du for the useful discussions. This work was supported by grants from the National Basic Research Program (2011CBA01104), the National High-tech R&D Program (2012AA020401) of China, the National Natural Science Foundation of China (31371337 and 61105003), and Beijing Higher Education Young Elite Teacher Project (YETP0055).

Conflict of interest

The authors declare that they have no conflict of interest.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Tingting Li.

Electronic supplementary material

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wu, Z., Lu, M. & Li, T. Prediction of substrate sites for protein phosphatases 1B, SHP-1, and SHP-2 based on sequence features. Amino Acids 46, 1919–1928 (2014). https://doi.org/10.1007/s00726-014-1739-6

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s00726-014-1739-6

Keywords

Navigation