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)

Carboxypeptidase A

DNA

Lysozyme (512)

Cytochrome c (unbound)

Deoxyhemoglobin

TATA-Binding Protein (TBP)

A-DNA

Transfer Ribonucleic Acid (tRNA)

Collagen

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Myohemerythrin

Oxyhemoglobin

Hemoglobin (1000)

Tomato Bushy Stunt Virus (TBSV)

Myoglobin Fold

Hemoglobin

Immunoglobulin G (IgG)

Myoglobin

Deoxyribonucleic Acid (DNA)

Trypsin

B-DNA

Induced Lac Repressor

Hemoglobin S

Ribonuclease S

Aspartate Transcarbamoylase (ATCase)

Z-DNA

Cytochrome c

Crambin

Lac Repressor

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

Transfer RNA and Gag Protein

HIV-Infected Cell

Myelin

Myoglobin in a Whale Muscle Cell

Chloroplast

Casein Micelle and Fat Globule in Milk

Biosites: Basement Membrane

Autophagy

Lipid Droplets

Escherichia coli Bacterium

Immunological Synapse

Abiogenesis

Excitatory and Inhibitory Synapses

Kinetochore

Coronavirus Life Cycle

Last Universal Common Ancestor

Phage-based COVID-19 Vaccine

Collagen and Extracellular Matrix

Caulobacter Polar Microdomain

RecA and DNA

SARS-CoV-2 and Neutralizing Antibodies

Zika Virus

HIV Vaccine

Biosites: Cytoplasm

Poliovirus Neutralization

SARS-CoV-2 Fusion

Measles Virus Proteins

Bacteriophage T4 Infection

HIV in Blood Plasma

Insulin Action

SARS-CoV-2 mRNA Vaccine

Ebola Virus

Model of a Mycoplasma Cell

Biosites: Nucleus

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Muscle

Insulin Release

Escherichia coli

Biosites: Red Blood Cell

Blood

Biosites: Blood Plasma

Coronavirus

Respiratory Droplet

Mycoplasma mycoides

JCVI-syn3A Minimal Cell

Red Blood Cell Cytoskeleton

CytoSkeleton

Influenza Virus

Influenza Vaccine