Molecule of the Month
September 2026

Biofilms

Bacterial communities glued together and protected by biological polymers

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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.

Cytochrome c (unbound)

Lysozyme (488)

Myoglobin

Lysozyme (512)

DNA

Tomato Bushy Stunt Virus (TBSV)

A-DNA

Immunoglobulin G (IgG)

Myohemerythrin

Transfer Ribonucleic Acid (tRNA)

Z-DNA

Crambin

B-DNA

Trypsin

Deoxyribonucleic Acid (DNA)

Collagen

Aspartate Transcarbamoylase (ATCase)

DPG-Hemoglobin Complex

Cytochrome c

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

Deoxyhemoglobin

Oxyhemoglobin

Induced Lac Repressor

Lac Repressor

Hemoglobin S

TATA-Binding Protein (TBP)

Ribonuclease S

Hemoglobin (1000)

Myoglobin Fold

Hemoglobin

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

Chloroplast

Influenza Vaccine

SARS-CoV-2 mRNA Vaccine

HIV-Infected Cell

Phage-based COVID-19 Vaccine

HIV in Blood Plasma

HIV Vaccine

Coronavirus Life Cycle

Respiratory Droplet

Excitatory and Inhibitory Synapses

Kinetochore

Vascular Endothelial Growth Factor (VegF) Signaling

Abiogenesis

RecA and DNA

Mycoplasma mycoides

Escherichia coli Bacterium

Lipid Droplets

Escherichia coli

SARS-CoV-2 Fusion

Biosites: Nucleus

Poliovirus Neutralization

Biosites: Red Blood Cell

Insulin Action

Red Blood Cell Cytoskeleton

Immunological Synapse

Measles Virus Proteins

Casein Micelle and Fat Globule in Milk

Myelin

Autophagy

Last Universal Common Ancestor

Ebola Virus

Model of a Mycoplasma Cell

Insulin Release

Biosites: Blood Plasma

Blood

Collagen and Extracellular Matrix

Coronavirus

Caulobacter Polar Microdomain

JCVI-syn3A Minimal Cell

Bacteriophage T4 Infection

CytoSkeleton

Biosites: Cytoplasm

Biosites: Basement Membrane

Transfer RNA and Gag Protein

Influenza Virus

Zika Virus

Biosites: Muscle

SARS-CoV-2 and Neutralizing Antibodies

Cellulose Synthase

Myoglobin in a Whale Muscle Cell