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 S

Carboxypeptidase A

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin

Oxyhemoglobin

Lysozyme (512)

Myoglobin Fold

Intermolecular Contacts in Hemoglobin S

A-DNA

Z-DNA

Lac Repressor

Transfer Ribonucleic Acid (tRNA)

Trypsin

Crambin

Cytochrome c (unbound)

B-DNA

Cytochrome c

Aspartate Transcarbamoylase (ATCase)

Lysozyme (488)

DNA

Immunoglobulin G (IgG)

DPG-Hemoglobin Complex

Deoxyhemoglobin

Myohemerythrin

Myoglobin

TATA-Binding Protein (TBP)

Hemoglobin (1000)

Induced Lac Repressor

Ribonuclease S

Deoxyribonucleic Acid (DNA)

Collagen

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

Immunological Synapse

Autophagy

Phage-based COVID-19 Vaccine

Abiogenesis

Model of a Mycoplasma Cell

Blood

Mycoplasma mycoides

Escherichia coli

SARS-CoV-2 mRNA Vaccine

Casein Micelle and Fat Globule in Milk

Kinetochore

Chloroplast

Red Blood Cell Cytoskeleton

Insulin Action

Caulobacter Polar Microdomain

Biosites: Blood Plasma

SARS-CoV-2 Fusion

Coronavirus

Lipid Droplets

JCVI-syn3A Minimal Cell

Biosites: Muscle

Bacteriophage T4 Infection

Coronavirus Life Cycle

Collagen and Extracellular Matrix

Biosites: Red Blood Cell

Influenza Vaccine

Biosites: Cytoplasm

SARS-CoV-2 and Neutralizing Antibodies

HIV Vaccine

Last Universal Common Ancestor

Escherichia coli Bacterium

Poliovirus Neutralization

CytoSkeleton

Respiratory Droplet

Zika Virus

Biosites: Nucleus

Influenza Virus

HIV in Blood Plasma

Myoglobin in a Whale Muscle Cell

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

HIV-Infected Cell

Measles Virus Proteins

Ebola Virus

Myelin

Excitatory and Inhibitory Synapses

Cellulose Synthase

RecA and DNA

Insulin Release

Transfer RNA and Gag Protein