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

A-DNA

TATA-Binding Protein (TBP)

Lac Repressor

Cytochrome c

Myohemerythrin

Collagen

Cytochrome c (unbound)

Tomato Bushy Stunt Virus (TBSV)

Transfer Ribonucleic Acid (tRNA)

Hemoglobin

Aspartate Transcarbamoylase (ATCase)

B-DNA

DNA

Myoglobin Fold

Induced Lac Repressor

Immunoglobulin G (IgG)

Z-DNA

Hemoglobin (1000)

Deoxyribonucleic Acid (DNA)

DPG-Hemoglobin Complex

Oxyhemoglobin

Trypsin

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Crambin

Ribonuclease S

Lysozyme (488)

Hemoglobin S

Lysozyme (512)

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

Collagen and Extracellular Matrix

HIV in Blood Plasma

Excitatory and Inhibitory Synapses

Casein Micelle and Fat Globule in Milk

Myelin

Autophagy

Mycoplasma mycoides

Respiratory Droplet

Transfer RNA and Gag Protein

Myoglobin in a Whale Muscle Cell

Escherichia coli Bacterium

Last Universal Common Ancestor

SARS-CoV-2 Fusion

Biosites: Basement Membrane

Insulin Action

Biosites: Blood Plasma

Coronavirus

Abiogenesis

Measles Virus Proteins

Model of a Mycoplasma Cell

Coronavirus Life Cycle

Biosites: Muscle

Zika Virus

Influenza Vaccine

Vascular Endothelial Growth Factor (VegF) Signaling

RecA and DNA

Kinetochore

HIV Vaccine

HIV-Infected Cell

Phage-based COVID-19 Vaccine

Immunological Synapse

CytoSkeleton

Poliovirus Neutralization

Biosites: Nucleus

JCVI-syn3A Minimal Cell

Biosites: Cytoplasm

Insulin Release

Ebola Virus

Chloroplast

Bacteriophage T4 Infection

Red Blood Cell Cytoskeleton

SARS-CoV-2 mRNA Vaccine

Blood

Escherichia coli

Biosites: Red Blood Cell

Influenza Virus

SARS-CoV-2 and Neutralizing Antibodies

Lipid Droplets

Caulobacter Polar Microdomain

Cellulose Synthase