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)

Trypsin

Lysozyme (512)

Deoxyhemoglobin

Carboxypeptidase A

Intermolecular Contacts in Hemoglobin S

Z-DNA

Deoxyribonucleic Acid (DNA)

TATA-Binding Protein (TBP)

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

Myoglobin

DNA

Collagen

Hemoglobin

Hemoglobin S

Ribonuclease S

B-DNA

Myohemerythrin

Lac Repressor

Crambin

DPG-Hemoglobin Complex

Transfer Ribonucleic Acid (tRNA)

Hemoglobin (1000)

Cytochrome c

Aspartate Transcarbamoylase (ATCase)

Myoglobin Fold

Immunoglobulin G (IgG)

A-DNA

Lysozyme (488)

Oxyhemoglobin

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

Biosites: Nucleus

Biosites: Cytoplasm

Respiratory Droplet

Mycoplasma mycoides

Excitatory and Inhibitory Synapses

Immunological Synapse

SARS-CoV-2 and Neutralizing Antibodies

Casein Micelle and Fat Globule in Milk

Escherichia coli Bacterium

Zika Virus

HIV Vaccine

Collagen and Extracellular Matrix

SARS-CoV-2 Fusion

Measles Virus Proteins

Autophagy

Phage-based COVID-19 Vaccine

RecA and DNA

Influenza Vaccine

Insulin Action

Biosites: Basement Membrane

Kinetochore

Poliovirus Neutralization

Myelin

Ebola Virus

HIV in Blood Plasma

Cellulose Synthase

Myoglobin in a Whale Muscle Cell

Biosites: Red Blood Cell

Vascular Endothelial Growth Factor (VegF) Signaling

SARS-CoV-2 mRNA Vaccine

Caulobacter Polar Microdomain

Blood

Model of a Mycoplasma Cell

Biosites: Muscle

Influenza Virus

CytoSkeleton

Biosites: Blood Plasma

Coronavirus Life Cycle

Last Universal Common Ancestor

Abiogenesis

Insulin Release

Transfer RNA and Gag Protein

Bacteriophage T4 Infection

Red Blood Cell Cytoskeleton

Coronavirus

Escherichia coli

HIV-Infected Cell

Chloroplast

Lipid Droplets

JCVI-syn3A Minimal Cell