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Prabhu H, Bhosale H, Sane A, Dhadwal R, Ramakrishnan V, Valadi J. Protein feature engineering framework for AMPylation site prediction. Sci Rep 2024; 14:8695. [PMID: 38622194 DOI: 10.1038/s41598-024-58450-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 03/29/2024] [Indexed: 04/17/2024] Open
Abstract
AMPylation is a biologically significant yet understudied post-translational modification where an adenosine monophosphate (AMP) group is added to Tyrosine and Threonine residues primarily. While recent work has illuminated the prevalence and functional impacts of AMPylation, experimental identification of AMPylation sites remains challenging. Computational prediction techniques provide a faster alternative approach. The predictive performance of machine learning models is highly dependent on the features used to represent the raw amino acid sequences. In this work, we introduce a novel feature extraction pipeline to encode the key properties relevant to AMPylation site prediction. We utilize a recently published dataset of curated AMPylation sites to develop our feature generation framework. We demonstrate the utility of our extracted features by training various machine learning classifiers, on various numerical representations of the raw sequences extracted with the help of our framework. Tenfold cross-validation is used to evaluate the model's capability to distinguish between AMPylated and non-AMPylated sites. The top-performing set of features extracted achieved MCC score of 0.58, Accuracy of 0.8, AUC-ROC of 0.85 and F1 score of 0.73. Further, we elucidate the behaviour of the model on the set of features consisting of monogram and bigram counts for various representations using SHapley Additive exPlanations.
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Affiliation(s)
- Hardik Prabhu
- Computing and Data Sciences, FLAME University, Pune, 412115, India
- Robert Bosch Centre for Cyber Physical Systems, Indian Institute of Science, Bengaluru, 560012, India
| | | | - Aamod Sane
- Computing and Data Sciences, FLAME University, Pune, 412115, India
| | - Renu Dhadwal
- Computing and Data Sciences, FLAME University, Pune, 412115, India
| | - Vigneshwar Ramakrishnan
- Bioinformatics Center, School of Chemical and Biotechnology, SASTRA Deemed to be University, Thanjavur, 613401, India
| | - Jayaraman Valadi
- Computing and Data Sciences, FLAME University, Pune, 412115, India.
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Zhang LQ, Sun L, Zhou YQ, Liu JJ, Wang QD, Mo WB, Cheng KG. Pentacyclic triterpene-amino acid derivatives induced apoptosis and autophagy in tumor cells, affected the JNK and PI3K/AKT/mTOR pathway. Bioorg Med Chem 2023; 94:117478. [PMID: 37742398 DOI: 10.1016/j.bmc.2023.117478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/07/2023] [Accepted: 09/13/2023] [Indexed: 09/26/2023]
Abstract
A series of pentacyclic triterpene-amino acid derivatives were synthesized and tested for anti-proliferative activity. The results showed that most of the target compounds had good anti-proliferative activity. 2c did not contain protecting groups and hydrochloride, had excellent cytotoxicity, so it had been selected for further study in the mechanism of action in T24 cells. The data from transcriptome sequencing indicated that 2c was found to be closely related to apoptosis and autophagy. Observation of fluorescence staining and analysis from flow cytometry demonstrated that 2c induced apoptosis and cause cell cycle arrest in S/G2 phase in T24 cells. Molecular mechanism studies exhibited that 2c induced apoptosis in the intrinsic and extrinsic pathways. 2c also induced cellular autophagy in T24 cells. Results from Western Blotting showed that 2c could activate JNK pathway and inhibit PI3K/AKT/mTOR pathway. In conclusion, 2c was deserved further investigation in the field of anti-tumor.
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Affiliation(s)
- Li-Qiong Zhang
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Li Sun
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Yu-Qing Zhou
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Jing-Jing Liu
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
| | - Quan-de Wang
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
| | - Wei-Bin Mo
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; College of Physical and Health Education, Guangxi Normal University, Guilin 541006, China.
| | - Ke-Guang Cheng
- State/Ministry of Education of China Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Guangxi Normal University, Guilin 541004, China; School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China.
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Nápoles-Duarte J, Biswas A, Parker MI, Palomares-Baez J, Chávez-Rojo MA, Rodríguez-Valdez LM. Stmol: A component for building interactive molecular visualizations within streamlit web-applications. Front Mol Biosci 2022; 9:990846. [PMID: 36213112 PMCID: PMC9538479 DOI: 10.3389/fmolb.2022.990846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 08/29/2022] [Indexed: 01/31/2023] Open
Abstract
Streamlit is an open-source Python coding framework for building web-applications or "web-apps" and is now being used by researchers to share large data sets from published studies and other resources. Here we present Stmol, an easy-to-use component for rendering interactive 3D molecular visualizations of protein and ligand structures within Streamlit web-apps. Stmol can render protein and ligand structures with just a few lines of Python code by utilizing popular visualization libraries, currently Py3DMol and Speck. On the user-end, Stmol does not require expertise to interactively navigate. On the developer-end, Stmol can be easily integrated within structural bioinformatic and cheminformatic pipelines to provide a simple means for user-end researchers to advance biological studies and drug discovery efforts. In this paper, we highlight a few examples of how Stmol has already been utilized by scientific communities to share interactive molecular visualizations of protein and ligand structures from known open databases. We hope Stmol will be used by researchers to build additional open-sourced web-apps to benefit current and future generations of scientists.
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Affiliation(s)
- J.M. Nápoles-Duarte
- Laboratorio de Química Computacional, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Nuevo Campus Universitario, Chihuahua, Mexico,*Correspondence: J.M. Nápoles-Duarte,
| | - Avratanu Biswas
- Doctoral School of Biology, University of Szeged, Szeged, Hungary,Biological Research Centre, Szeged, Hungary
| | - Mitchell I. Parker
- Molecular and Cell Biology and Genetics (MCBG) Program, Drexel University College of Medicine, Philadelphia, PA, United States,Program in Molecular Therapeutics, Fox Chase Cancer Center, Philadelphia, PA, United States
| | - J.P. Palomares-Baez
- Laboratorio de Química Computacional, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Nuevo Campus Universitario, Chihuahua, Mexico
| | - M. A. Chávez-Rojo
- Laboratorio de Química Computacional, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Nuevo Campus Universitario, Chihuahua, Mexico
| | - L. M. Rodríguez-Valdez
- Laboratorio de Química Computacional, Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Nuevo Campus Universitario, Chihuahua, Mexico
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