Identifying Protein Kinase Substrates Using Functional Protein Arrays
Author Information
Author(s): Meng Lihao, Michaud Gregory A, Merkel Janie S, Zhou Fang, Huang Jing, Mattoon Dawn R, Schweitzer Barry
Primary Institution: Invitrogen Corp.
Hypothesis
Can functional protein arrays effectively identify substrates of protein kinases?
Conclusion
Functional protein microarrays can quickly identify novel kinase substrates, enhancing our understanding of protein kinase functions.
Supporting Evidence
- Over 80% correlation was observed between protein array and solution-based assays for substrate phosphorylation.
- Twenty out of 24 kinase-substrate pairs were successfully identified on protein arrays.
- Pooling-deconvolution strategies improved the identification of specific kinase-substrate interactions.
Takeaway
This study shows that scientists can use special protein arrays to find out which proteins are affected by kinases, helping us understand how these proteins work in the body.
Methodology
The study used functional protein arrays to identify kinase substrates by comparing results with standard solution-based assays.
Potential Biases
Potential bias due to the presence of BSA affecting substrate phosphorylation results.
Limitations
Some kinase-substrate interactions were not observed on the arrays, possibly due to masking of phosphorylation sites or denaturation of proteins.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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