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.

Lysozyme (488)

Lysozyme (512)

DNA

Crambin

Myohemerythrin

Hemoglobin S

Oxyhemoglobin

Myoglobin

Hemoglobin (1000)

Z-DNA

Tomato Bushy Stunt Virus (TBSV)

Induced Lac Repressor

Hemoglobin

Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Aspartate Transcarbamoylase (ATCase)

B-DNA

Immunoglobulin G (IgG)

Deoxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Carboxypeptidase A

Deoxyribonucleic Acid (DNA)

Cytochrome c (unbound)

Collagen

Cytochrome c

A-DNA

Trypsin

DPG-Hemoglobin Complex

Myoglobin Fold

Ribonuclease S

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

Measles Virus Proteins

Myelin

Abiogenesis

SARS-CoV-2 Fusion

Immunological Synapse

Lipid Droplets

Transfer RNA and Gag Protein

Biosites: Blood Plasma

HIV Vaccine

Myoglobin in a Whale Muscle Cell

Poliovirus Neutralization

Zika Virus

CytoSkeleton

Biosites: Cytoplasm

Last Universal Common Ancestor

Cellulose Synthase

Respiratory Droplet

Autophagy

Insulin Action

Blood

RecA and DNA

Chloroplast

HIV in Blood Plasma

Biosites: Red Blood Cell

Biosites: Basement Membrane

Escherichia coli Bacterium

Influenza Virus

Bacteriophage T4 Infection

Insulin Release

Model of a Mycoplasma Cell

Ebola Virus

HIV-Infected Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Casein Micelle and Fat Globule in Milk

Phage-based COVID-19 Vaccine

Excitatory and Inhibitory Synapses

Biosites: Muscle

JCVI-syn3A Minimal Cell

Kinetochore

Collagen and Extracellular Matrix

Influenza Vaccine

Escherichia coli

SARS-CoV-2 mRNA Vaccine

Coronavirus

Biosites: Nucleus

Caulobacter Polar Microdomain

SARS-CoV-2 and Neutralizing Antibodies

Coronavirus Life Cycle

Red Blood Cell Cytoskeleton