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.

TATA-Binding Protein (TBP)

Myoglobin

DPG-Hemoglobin Complex

Cytochrome c

Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Lac Repressor

Myohemerythrin

Cytochrome c (unbound)

Aspartate Transcarbamoylase (ATCase)

Oxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Lysozyme (512)

Collagen

Hemoglobin

A-DNA

Tomato Bushy Stunt Virus (TBSV)

DNA

Z-DNA

Immunoglobulin G (IgG)

Lysozyme (488)

Trypsin

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Carboxypeptidase A

Ribonuclease S

Deoxyhemoglobin

Crambin

Hemoglobin S

B-DNA

Myoglobin Fold

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

Insulin Action

Excitatory and Inhibitory Synapses

RecA and DNA

Casein Micelle and Fat Globule in Milk

Vascular Endothelial Growth Factor (VegF) Signaling

Escherichia coli

Cellulose Synthase

Influenza Vaccine

Biosites: Cytoplasm

Collagen and Extracellular Matrix

Chloroplast

Zika Virus

CytoSkeleton

Insulin Release

HIV-Infected Cell

Phage-based COVID-19 Vaccine

Biosites: Blood Plasma

Ebola Virus

Biosites: Basement Membrane

Caulobacter Polar Microdomain

Coronavirus

Biosites: Nucleus

Mycoplasma mycoides

Last Universal Common Ancestor

HIV in Blood Plasma

Blood

Biosites: Red Blood Cell

Abiogenesis

Respiratory Droplet

Myelin

Biosites: Muscle

Lipid Droplets

SARS-CoV-2 Fusion

Measles Virus Proteins

JCVI-syn3A Minimal Cell

Kinetochore

Poliovirus Neutralization

Escherichia coli Bacterium

HIV Vaccine

SARS-CoV-2 mRNA Vaccine

Autophagy

Influenza Virus

Red Blood Cell Cytoskeleton

Immunological Synapse

SARS-CoV-2 and Neutralizing Antibodies

Myoglobin in a Whale Muscle Cell

Model of a Mycoplasma Cell

Coronavirus Life Cycle

Transfer RNA and Gag Protein

Bacteriophage T4 Infection