Molecule of the Month
June 2026

Therapeutic Phage

Using the natural predators of bacteria to fight antibiotic-resistant infections

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PDB data help explain fundamental biology, biomedicine, bioengineering/biotechnology, and energy sciences
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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 (www.hhmi.org). All rights reserved.

Deoxyhemoglobin

Cytochrome c

Lac Repressor

Tomato Bushy Stunt Virus (TBSV)

Deoxyribonucleic Acid (DNA)

Z-DNA

Crambin

Transfer Ribonucleic Acid (tRNA)

Carboxypeptidase A

B-DNA

Induced Lac Repressor

Myohemerythrin

Ribonuclease S

Hemoglobin (1000)

TATA-Binding Protein (TBP)

Intermolecular Contacts in Hemoglobin S

Lysozyme (512)

Hemoglobin S

Myoglobin Fold

Trypsin

Myoglobin

Aspartate Transcarbamoylase (ATCase)

Cytochrome c (unbound)

A-DNA

Lysozyme (488)

Hemoglobin

DNA

Oxyhemoglobin

Collagen

Immunoglobulin G (IgG)

DPG-Hemoglobin Complex

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

Casein Micelle and Fat Globule in Milk

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

Mycoplasma mycoides

HIV in Blood Plasma

Coronavirus Life Cycle

Excitatory and Inhibitory Synapses

Caulobacter Polar Microdomain

Biosites: Nucleus

Ebola Virus

Model of a Mycoplasma Cell

Blood

Chloroplast

Immunological Synapse

Zika Virus

Phage-based COVID-19 Vaccine

Last Universal Common Ancestor

SARS-CoV-2 Fusion

Respiratory Droplet

Biosites: Blood Plasma

Autophagy

Measles Virus Proteins

Abiogenesis

Coronavirus

Myelin

Cellulose Synthase

Biosites: Muscle

Bacteriophage T4 Infection

Kinetochore

Biosites: Cytoplasm

Red Blood Cell Cytoskeleton

Myoglobin in a Whale Muscle Cell

Poliovirus Neutralization

Influenza Virus

SARS-CoV-2 mRNA Vaccine

Escherichia coli

Lipid Droplets

JCVI-syn3A Minimal Cell

CytoSkeleton

HIV-Infected Cell

Insulin Action

Insulin Release

Escherichia coli Bacterium

Collagen and Extracellular Matrix

Transfer RNA and Gag Protein

Biosites: Red Blood Cell

HIV Vaccine

Influenza Vaccine

RecA and DNA

SARS-CoV-2 and Neutralizing Antibodies