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.

B-DNA

Intermolecular Contacts in Hemoglobin S

Crambin

Deoxyhemoglobin

Carboxypeptidase A

Lac Repressor

TATA-Binding Protein (TBP)

Lysozyme (512)

Trypsin

Ribonuclease S

Hemoglobin

Tomato Bushy Stunt Virus (TBSV)

Immunoglobulin G (IgG)

DNA

Hemoglobin S

Myoglobin Fold

Cytochrome c

A-DNA

Myohemerythrin

Aspartate Transcarbamoylase (ATCase)

Cytochrome c (unbound)

Hemoglobin (1000)

Induced Lac Repressor

Collagen

Z-DNA

Myoglobin

Deoxyribonucleic Acid (DNA)

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Oxyhemoglobin

Lysozyme (488)

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

Abiogenesis

SARS-CoV-2 mRNA Vaccine

Caulobacter Polar Microdomain

Insulin Action

Vascular Endothelial Growth Factor (VegF) Signaling

Myoglobin in a Whale Muscle Cell

Model of a Mycoplasma Cell

Transfer RNA and Gag Protein

Coronavirus Life Cycle

Kinetochore

Casein Micelle and Fat Globule in Milk

Respiratory Droplet

Last Universal Common Ancestor

Coronavirus

Bacteriophage T4 Infection

Cellulose Synthase

Influenza Vaccine

Influenza Virus

Insulin Release

Biosites: Cytoplasm

Biosites: Basement Membrane

Poliovirus Neutralization

Autophagy

Biosites: Blood Plasma

Immunological Synapse

Biosites: Red Blood Cell

Red Blood Cell Cytoskeleton

HIV Vaccine

Escherichia coli Bacterium

Myelin

Measles Virus Proteins

Ebola Virus

Mycoplasma mycoides

HIV in Blood Plasma

Zika Virus

Lipid Droplets

Collagen and Extracellular Matrix

Escherichia coli

RecA and DNA

SARS-CoV-2 and Neutralizing Antibodies

Excitatory and Inhibitory Synapses

Biosites: Muscle

CytoSkeleton

SARS-CoV-2 Fusion

Biosites: Nucleus

JCVI-syn3A Minimal Cell

HIV-Infected Cell

Blood

Phage-based COVID-19 Vaccine