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.

Hemoglobin (1000)

Tomato Bushy Stunt Virus (TBSV)

Myoglobin Fold

Crambin

Lysozyme (488)

Intermolecular Contacts in Hemoglobin S

Oxyhemoglobin

Deoxyhemoglobin

B-DNA

Lysozyme (512)

DNA

Aspartate Transcarbamoylase (ATCase)

TATA-Binding Protein (TBP)

Carboxypeptidase A

Ribonuclease S

Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Myohemerythrin

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Myoglobin

Cytochrome c

DPG-Hemoglobin Complex

A-DNA

Trypsin

Hemoglobin

Immunoglobulin G (IgG)

Collagen

Z-DNA

Cytochrome c (unbound)

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

Myelin

Respiratory Droplet

Last Universal Common Ancestor

Caulobacter Polar Microdomain

Immunological Synapse

Biosites: Blood Plasma

Escherichia coli Bacterium

Zika Virus

Insulin Action

Biosites: Nucleus

Influenza Vaccine

SARS-CoV-2 mRNA Vaccine

Cellulose Synthase

Casein Micelle and Fat Globule in Milk

Poliovirus Neutralization

Mycoplasma mycoides

Blood

Autophagy

Bacteriophage T4 Infection

JCVI-syn3A Minimal Cell

Biosites: Muscle

Measles Virus Proteins

Excitatory and Inhibitory Synapses

Phage-based COVID-19 Vaccine

Insulin Release

Kinetochore

RecA and DNA

Myoglobin in a Whale Muscle Cell

Influenza Virus

Escherichia coli

Biosites: Cytoplasm

Lipid Droplets

HIV Vaccine

HIV in Blood Plasma

HIV-Infected Cell

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

CytoSkeleton

Ebola Virus

Chloroplast

Abiogenesis

Collagen and Extracellular Matrix

Model of a Mycoplasma Cell

Transfer RNA and Gag Protein

Red Blood Cell Cytoskeleton

Coronavirus

SARS-CoV-2 and Neutralizing Antibodies

Coronavirus Life Cycle

Biosites: Red Blood Cell

SARS-CoV-2 Fusion