This website does readability filtering of other pages. All styles, scripts, forms and ads are stripped. If you want your website excluded or have other feedback, use this form.

PDB-101: Home Page

Educational portal of

Molecular explorations
through biology and medicine

Educational portal of&nbsp Molecule of the Month August 2019

Cyclin and Cyclin-dependent Kinase

Cyclins and cyclin-dependent kinases control when cells divide, making them important targets for cancer therapy.


3D View:  1FIN




All articles:  By Date  By Category  By Title Browse resources by category You and Your Health Immune System HIV and AIDS Diabetes Cancer Viruses Toxins and Poisons Drug Action Antimicrobial Resistance Zika Drugs and the Brain Protein Synthesis Enzymes Molecular Infrastructure Transport Biological Energy Molecules and the Environment Biology of Plants Molecular Motors Cellular Signaling Nucleic Acids Bioluminescence and Fluorescence Molecular Evolution Recombinant DNA Biotechnology Nanotechnology Renewable Energy Biomolecules Biomolecular Structural Biology Integrative/Hybrid Methods PDB Data Visualizing Molecules Nobel Prizes and PDB structures Health Focus: Antimicrobial Resistance

Antibiotics have saved countless lives, but pathogens are quickly finding ways to survive antibiotic treatment. Antibiotic-resistant bacteria are predicted to become the leading cause of death worldwide. They take many approaches: pumping antibiotics out of their cells, altering the molecular machinery that the antibiotics target, and attacking the antibiotics directly. Atomic structures publicly available in the PDB are revealing the details of drug resistance and providing new ways to combat it. Use the PDB-101 resources to learn about protein structures related to antibiotic action and resistance.

2019 Video Challenge for High School Students

Mechanisms of Bacterial Resistance to Aminoglycoside Antibiotics

Many thanks to all challenge participants, expert judges, teachers, parents, and voters who made this exciting competition happen.

Congratulations to the 2019 Winners!

Mira Mesa High School,
San Diego, CA

The Quarry Lane School,
Dublin, CA

Stuyvesant High School,
New York, NY

Rye Country Day School,
Rye, NY

News and Events

Poster Prize Awarded at ACA

» 08/20/2019

Join Our Biocuration Team

» 08/06/2019

Education Corner: How Does Life Work?

» 07/23/2019

Beginner’s Guide to PDB Structures and the PDBx/mmCIF Format

» 07/16/2019

Summer Newsletter Published

» 07/09/2019

Create a Hemoglobin Bean Bag Toss

» 07/02/2019

Learn About HIV and AIDS at PDB-101

» 06/25/2019

New Flyer: Antibiotics in Action

» 06/04/2019

Annual Report Published

» 05/21/2019

Award-Winning Videos on Antibiotic Resistance

» 05/14/2019

All News Learn: Materials for Exploration Video: What is a Protein? Learn about the relationship between protein structure and function. Paper Models Posters Videos Animations Teach: Curricula The RCSB PDB Curricula provide authentic, hands-on teaching materials, individual and group activities and assessment suggestions. All Curricula Education Corner: Using PDB Resources July 2019 How Does Life Work? Creating Scientific Explanations in Stained Glass by Joel Kowit All Issues SciArt Galleries Irving Geis (1908-1997) was a gifted artist who helped illuminate the field of structural biology with his iconic images. The Geis Digital Archive features many of his illustrations in the context of their molecular structures.

Images used with permission from the Howard Hughes Medical Institute ( All rights reserved.



Induced Lac Repressor

Cytochrome c


DPG-Hemoglobin Complex

Myoglobin Fold



Aspartate Transcarbamoylase (ATCase)



Ribonuclease S

Deoxyribonucleic Acid (DNA)


Hemoglobin S




Immunoglobulin G (IgG)

Intermolecular Contacts in Hemoglobin S

TATA-Binding Protein (TBP)

Cytochrome c (unbound)

Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

Tomato Bushy Stunt Virus (TBSV)





The Molecular Landscapes by David S. Goodsell integrate information from structural biology, microscopy and biophysics to simulate detailed views of the molecular structure of living cells.

Illustrations are free for use under a CC-BY-4.0 license

Biosites: Nucleus

Zika Virus

Biosites: Red Blood Cell

Biosites: Basement Membrane

Excitatory and Inhibitory Synapses

Insulin Action

Biosites: Blood Plasma

Ebola Virus

Biosites: Cytoplasm

Biosites: Muscle


Escherichia coli

Mycoplasma mycoides

Measles Virus Proteins


HIV in Blood Plasma

About PDB-101

PDB-101 helps teachers, students, and the general public explore the 3D world of proteins and nucleic acids. Learning about their diverse shapes and functions helps to understand all aspects of biomedicine and agriculture, from protein synthesis to health and disease to biological energy.

Why PDB-101? Researchers around the globe make these 3D structures freely available at the Protein Data Bank (PDB) archive. PDB-101 builds introductory materials to help beginners get started in the subject ("101", as in an entry level course) as well as resources for extended learning.

RCSB PDB (citation) is hosted by

RCSB PDB is a member of

RCSB PDB is funded by a grant from the National Science Foundation (DBI-1338415), the National Institutes of Health, and the US Department of Energy (DE-SC0019749).