> For the complete documentation index, see [llms.txt](https://docs.labii.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.labii.com/widgets/section-widgets/biology/protein.md).

# Protein

## Overview

The Protein category provides section widgets for reviewing protein structure and sequence features directly within Labii ELN and LIMS records. These widgets help researchers connect Protein Data Bank entries to experimental documentation, making it easier to inspect 3D molecular models, sequence-position annotations, and biologically relevant regions without leaving the record. Together, they support structural biology, protein engineering, antibody research, and assay interpretation workflows where protein context needs to stay tied to protocols, observations, and conclusions. Use these widgets when you want molecular insight and scientific narrative to live in the same traceable workspace.

## Widgets

* [MolStar](/widgets/section-widgets/biology/protein/molstar.md) - Visualize 3D protein and antibody structures from PDB IDs
* [RCSB Saguaro](/widgets/section-widgets/biology/protein/rcsb-saguaro.md) - Display protein sequence features and annotations from PDB IDs