Molecule of the Month
October 2019

Ribonucleotide Reductase

Ribonucleotide reductase creates the building blocks of DNA


3D View:  3R1R




Health Focus: Drugs and the Brain

The brain orchestrates everything we do, sending signals through the nervous system to control different parts of our body. The brain is also the home of our thoughts and consciousness, as neurons process the input from our senses and store what they find as memories. Many drugs are available to help tune the function of the brain and nervous system when there are problems. Unfortunately, the effects of some of these drugs are hard to control and can lead to abuse and addiction. Explore PDB-101 Resources to learn about proteins related to our nervous system and mental health.

2020 Video Challenge for High School Students

Molecular Mechanisms of Opioid Action

RCSB PDB invites all high school students to tell a two-minute story that combines structural Biology and Medicine. Videos can be submited between January 14 and April 28, 2020.

Quick Links

The Challenge | Learn | Participate

2020 Video Challenge
Learn: Materials for Exploration
Learn about the relationship between protein structure and function.
Teach: Curricula
The RCSB PDB Curricula provide authentic, hands-on teaching materials, individual and group activities and assessment suggestions.
Education Corner: Using PDB Resources
Gaming Structural Biology for General Audiences: Deep Learning, Citizen Science & Puppies: The path towards segmentation of a cryoEM dataset of a virus infected cell by Michele Darrow, Ph.D. and XFEL Crystal Blaster: an educational game by Fiacre Kabayiza and Bill Bauer, Ph.D.
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.

Cytochrome c (unbound)


Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Myoglobin Fold



TATA-Binding Protein (TBP)

Hemoglobin S



Carboxypeptidase A



Lac Repressor

Cytochrome c

Induced Lac Repressor


Immunoglobulin G (IgG)

Ribonuclease S


Tomato Bushy Stunt Virus (TBSV)


Lysozyme (512)


Deoxyribonucleic Acid (DNA)

Aspartate Transcarbamoylase (ATCase)

DPG-Hemoglobin Complex

Lysozyme (488)


Intermolecular Contacts in Hemoglobin S

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

Mycoplasma mycoides

Biosites: Muscle

Zika Virus

Biosites: Blood Plasma

Insulin Action


Biosites: Basement Membrane

Biosites: Nucleus

Excitatory and Inhibitory Synapses

Escherichia coli

Biosites: Red Blood Cell


Measles Virus Proteins

Ebola Virus

Biosites: Cytoplasm

HIV in Blood Plasma