The Human Epidermal Growth Factor Receptor 2, commonly known as HER2, is a crucial protein involved in cell growth, division, and repair.
HER2 UniProt: Unraveling the Human Epidermal Growth Factor Receptor 2
The Human Epidermal Growth Factor Receptor 2, commonly known as HER2, is a crucial protein involved in cell growth, division, and repair. Its significance in human biology, particularly in various cancers, makes it a frequent subject of scientific inquiry. For researchers and clinicians seeking comprehensive and expertly curated information about HER2, the UniProt database stands out as an indispensable resource.
What is HER2?
HER2 is a member of the epidermal growth factor receptor (EGFR/ERBB) family, a group of receptor tyrosine kinases that play a vital role in regulating cell proliferation, differentiation, and survival. Unlike other family members, HER2 does not bind directly to growth factors. Instead, it functions as a co-receptor, forming heterodimers with other activated EGFR family members, which amplifies downstream signaling pathways. This unique characteristic makes it a potent driver of cell growth when overexpressed or dysregulated.
In various cancers, notably breast and gastric cancers, amplification or overexpression of the HER2 gene leads to an increased number of HER2 proteins on the cell surface. This hyperactive signaling can promote uncontrolled cell growth, leading to more aggressive tumor development and progression. Consequently, HER2 has become a significant biomarker and therapeutic target in oncology.
The UniProt Database: A Key Resource for Protein Information
UniProt (Universal Protein Resource) is a comprehensive, high-quality, and freely accessible database of protein sequence and functional information. It is a collaborative effort between the European Bioinformatics Institute (EMBL-EBI), the SIB Swiss Institute of Bioinformatics, and the Protein Information Resource (PIR). UniProt provides scientists with a central hub for detailed protein data, integrating information from various sources and offering both expertly reviewed (UniProtKB/Swiss-Prot) and unreviewed (UniProtKB/TrEMBL) entries.
For any protein, including HER2, UniProt provides a wealth of information ranging from its primary amino acid sequence to complex functional annotations, post-translational modifications, and disease associations. This makes it an essential tool for understanding the molecular intricacies of proteins and their roles in biological systems and diseases.
Exploring HER2 Information on UniProt
When searching for "HER2" on UniProt, users are directed to a detailed entry that compiles extensive data about the protein. This entry, typically under its official gene name ERBB2, offers a structured overview of its characteristics and biological context.
Protein Sequence and Structure
UniProt provides the canonical amino acid sequence of HER2, along with information on alternative splicing isoforms. Researchers can access structural data, including links to solved protein structures in databases like the Protein Data Bank (PDB), offering insights into its three-dimensional conformation and potential interaction sites.
Functional Annotation and Biological Processes
The database comprehensively details HER2's molecular functions, such as its role as a receptor tyrosine kinase and its involvement in signal transduction. It also outlines the biological processes it participates in, including cell proliferation, differentiation, and survival, as well as its subcellular localization (e.g., plasma membrane).
Disease Relevance and Clinical Implications
A significant portion of the HER2 UniProt entry is dedicated to its association with human diseases. This includes detailed descriptions of its role in various cancers, specific mutations linked to disease, and the clinical implications of HER2 overexpression or amplification. This section is particularly valuable for cancer researchers and those developing targeted therapies.
Post-Translational Modifications and Interactions
UniProt extensively catalogs known post-translational modifications (PTMs) of HER2, such as phosphorylation sites, which are critical for regulating its activity. Furthermore, it lists experimentally verified protein-protein interactions, illustrating how HER2 integrates into larger cellular signaling networks.
Why Use UniProt for HER2 Research?
UniProt offers several advantages for studying HER2. Its expert curation ensures high data quality and reliability. The database integrates information from numerous sources, providing a holistic view of the protein. Its standardized format allows for easy comparison with other proteins, facilitating comparative genomics and proteomics studies. For anyone needing accurate, comprehensive, and up-to-date information on HER2, UniProt is an unparalleled resource.
Conclusion
HER2 is a protein of immense biological and clinical importance, central to understanding cell growth and cancer development. The UniProt database serves as a definitive and authoritative platform for accessing detailed information about HER2, from its fundamental sequence and structure to its complex functions, modifications, and disease associations. By leveraging the comprehensive data within UniProt, researchers can deepen their understanding of HER2, paving the way for further advancements in diagnostics and targeted therapies.