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.

DPG-Hemoglobin Complex

Lysozyme (512)

Lysozyme (488)

Myoglobin Fold

Ribonuclease S

Myoglobin

A-DNA

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Induced Lac Repressor

Crambin

Collagen

Deoxyribonucleic Acid (DNA)

Aspartate Transcarbamoylase (ATCase)

Lac Repressor

Trypsin

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Tomato Bushy Stunt Virus (TBSV)

Carboxypeptidase A

Z-DNA

Cytochrome c

Hemoglobin (1000)

Hemoglobin

Cytochrome c (unbound)

Myohemerythrin

Immunoglobulin G (IgG)

Oxyhemoglobin

B-DNA

DNA

TATA-Binding Protein (TBP)

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

Myoglobin in a Whale Muscle Cell

HIV-Infected Cell

Collagen and Extracellular Matrix

Biosites: Red Blood Cell

Insulin Release

Biosites: Nucleus

Casein Micelle and Fat Globule in Milk

Blood

Abiogenesis

Coronavirus Life Cycle

Biosites: Blood Plasma

Chloroplast

Last Universal Common Ancestor

Biosites: Cytoplasm

Lipid Droplets

Model of a Mycoplasma Cell

Autophagy

Biosites: Muscle

Influenza Virus

Insulin Action

Measles Virus Proteins

Kinetochore

SARS-CoV-2 Fusion

Ebola Virus

HIV in Blood Plasma

HIV Vaccine

JCVI-syn3A Minimal Cell

Zika Virus

SARS-CoV-2 and Neutralizing Antibodies

RecA and DNA

Red Blood Cell Cytoskeleton

Caulobacter Polar Microdomain

Escherichia coli Bacterium

Vascular Endothelial Growth Factor (VegF) Signaling

Immunological Synapse

Cellulose Synthase

Respiratory Droplet

Excitatory and Inhibitory Synapses

Coronavirus

Poliovirus Neutralization

SARS-CoV-2 mRNA Vaccine

Myelin

Bacteriophage T4 Infection

CytoSkeleton

Transfer RNA and Gag Protein

Influenza Vaccine

Biosites: Basement Membrane

Phage-based COVID-19 Vaccine

Escherichia coli