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

TATA-Binding Protein (TBP)

B-DNA

Transfer Ribonucleic Acid (tRNA)

Induced Lac Repressor

Hemoglobin

Deoxyhemoglobin

Crambin

Z-DNA

Ribonuclease S

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin (1000)

Collagen

Myoglobin Fold

Trypsin

DNA

Deoxyribonucleic Acid (DNA)

Lysozyme (488)

Lac Repressor

Immunoglobulin G (IgG)

Cytochrome c (unbound)

Aspartate Transcarbamoylase (ATCase)

A-DNA

Lysozyme (512)

Carboxypeptidase A

Cytochrome c

Hemoglobin S

Intermolecular Contacts in Hemoglobin S

Oxyhemoglobin

DPG-Hemoglobin Complex

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

Lipid Droplets

Measles Virus Proteins

Myoglobin in a Whale Muscle Cell

Insulin Action

Abiogenesis

Biosites: Nucleus

Cellulose Synthase

Collagen and Extracellular Matrix

Coronavirus Life Cycle

SARS-CoV-2 mRNA Vaccine

Poliovirus Neutralization

Model of a Mycoplasma Cell

Zika Virus

Insulin Release

HIV-Infected Cell

Bacteriophage T4 Infection

Ebola Virus

Mycoplasma mycoides

Biosites: Red Blood Cell

CytoSkeleton

Excitatory and Inhibitory Synapses

Biosites: Muscle

Phage-based COVID-19 Vaccine

Chloroplast

Blood

Respiratory Droplet

HIV in Blood Plasma

Last Universal Common Ancestor

Biosites: Cytoplasm

Influenza Virus

Influenza Vaccine

SARS-CoV-2 Fusion

Transfer RNA and Gag Protein

SARS-CoV-2 and Neutralizing Antibodies

Red Blood Cell Cytoskeleton

JCVI-syn3A Minimal Cell

Biosites: Basement Membrane

Vascular Endothelial Growth Factor (VegF) Signaling

HIV Vaccine

RecA and DNA

Caulobacter Polar Microdomain

Autophagy

Kinetochore

Immunological Synapse

Biosites: Blood Plasma

Escherichia coli Bacterium

Myelin

Casein Micelle and Fat Globule in Milk

Coronavirus

Escherichia coli