feat: add protein-charts.ipynb (#174)

Author: suhana13

notebooks/README.md

@@ -14,6 +14,7 @@ Notebook | Description
 [`Missing Data Imputation Tutorial.ipynb`](https://colab.research.google.com/drive/1S_rMCyRsgygd8sV-r8aLRPcKwZPFcEGb) | A notebook that analyzes the different types of time series holes and different methods of imputing those holes.
 [`analyzing_genomic_data.ipynb`](https://colab.research.google.com/drive/1Io7EDr4LjfPLl_l2JYY8__WbfitfNlOf) | A notebook that analyzes genetic variants within RUNX1 (provided by multiple datasets from UCSC Genome Browser, NCBI/gene, and ClinVar).
 [`Drug_Discovery_With_Data_Commons.ipynb`](https://colab.research.google.com/drive/1dSKYiRMn3mbDsInorQzYM0yk7sqv6fIV) | A notebook performing drug discovery by identifying novel applications of previously approved drugs using Biomedical Data Commons.
+[`protein-charts.ipynb`](https://colab.research.google.com/drive/1Kh-ufqobdChZ2qQgEY0rdPA2_DBmOiSG) | A notebook summarizing various protein properties and interactions using graphical visualizations.
 
 ## Maintenance