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 (512)

Tomato Bushy Stunt Virus (TBSV)

Ribonuclease S

Deoxyhemoglobin

Myohemerythrin

B-DNA

Carboxypeptidase A

Z-DNA

A-DNA

Myoglobin

Lac Repressor

Trypsin

Lysozyme (488)

Cytochrome c (unbound)

Transfer Ribonucleic Acid (tRNA)

Deoxyribonucleic Acid (DNA)

Hemoglobin

Aspartate Transcarbamoylase (ATCase)

Crambin

Induced Lac Repressor

DNA

TATA-Binding Protein (TBP)

Immunoglobulin G (IgG)

DPG-Hemoglobin Complex

Hemoglobin S

Oxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Cytochrome c

Myoglobin Fold

Collagen

Hemoglobin (1000)

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

Red Blood Cell Cytoskeleton

Vascular Endothelial Growth Factor (VegF) Signaling

Respiratory Droplet

Blood

Insulin Action

Model of a Mycoplasma Cell

HIV Vaccine

Mycoplasma mycoides

SARS-CoV-2 mRNA Vaccine

Influenza Vaccine

Biosites: Red Blood Cell

Autophagy

Biosites: Muscle

Bacteriophage T4 Infection

Escherichia coli Bacterium

Biosites: Nucleus

SARS-CoV-2 Fusion

Chloroplast

HIV in Blood Plasma

Collagen and Extracellular Matrix

Biosites: Basement Membrane

Transfer RNA and Gag Protein

Caulobacter Polar Microdomain

Kinetochore

Last Universal Common Ancestor

Escherichia coli

Lipid Droplets

Zika Virus

HIV-Infected Cell

Poliovirus Neutralization

JCVI-syn3A Minimal Cell

Myelin

Myoglobin in a Whale Muscle Cell

Coronavirus Life Cycle

Excitatory and Inhibitory Synapses

Casein Micelle and Fat Globule in Milk

CytoSkeleton

Cellulose Synthase

Abiogenesis

Coronavirus

RecA and DNA

Ebola Virus

Biosites: Cytoplasm

Phage-based COVID-19 Vaccine

Immunological Synapse

Insulin Release

Measles Virus Proteins

Biosites: Blood Plasma

Influenza Virus

SARS-CoV-2 and Neutralizing Antibodies