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.

Myoglobin

Carboxypeptidase A

DNA

Ribonuclease S

Cytochrome c (unbound)

Hemoglobin

Transfer Ribonucleic Acid (tRNA)

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin S

B-DNA

Lysozyme (512)

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

TATA-Binding Protein (TBP)

Intermolecular Contacts in Hemoglobin S

Myoglobin Fold

Deoxyribonucleic Acid (DNA)

Lac Repressor

Cytochrome c

Myohemerythrin

Trypsin

Lysozyme (488)

A-DNA

Induced Lac Repressor

Crambin

Immunoglobulin G (IgG)

Collagen

Z-DNA

Hemoglobin (1000)

DPG-Hemoglobin Complex

Deoxyhemoglobin

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

Cellulose Synthase

Abiogenesis

Chloroplast

Coronavirus Life Cycle

Phage-based COVID-19 Vaccine

Biosites: Nucleus

Zika Virus

Last Universal Common Ancestor

HIV in Blood Plasma

Ebola Virus

SARS-CoV-2 mRNA Vaccine

RecA and DNA

Coronavirus

HIV-Infected Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Collagen and Extracellular Matrix

Poliovirus Neutralization

HIV Vaccine

Transfer RNA and Gag Protein

Mycoplasma mycoides

Escherichia coli

Myelin

Bacteriophage T4 Infection

Insulin Action

Biosites: Basement Membrane

SARS-CoV-2 Fusion

Autophagy

Lipid Droplets

Biosites: Cytoplasm

Influenza Vaccine

Biosites: Red Blood Cell

Escherichia coli Bacterium

Caulobacter Polar Microdomain

CytoSkeleton

Insulin Release

Blood

Respiratory Droplet

JCVI-syn3A Minimal Cell

Measles Virus Proteins

Model of a Mycoplasma Cell

Biosites: Muscle

Excitatory and Inhibitory Synapses

Casein Micelle and Fat Globule in Milk

Red Blood Cell Cytoskeleton

Biosites: Blood Plasma

Immunological Synapse

Kinetochore

SARS-CoV-2 and Neutralizing Antibodies

Myoglobin in a Whale Muscle Cell

Influenza Virus