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.

Ribonuclease S

Immunoglobulin G (IgG)

Lysozyme (488)

Oxyhemoglobin

Myoglobin

Z-DNA

Carboxypeptidase A

Hemoglobin (1000)

DPG-Hemoglobin Complex

Trypsin

Hemoglobin

Myoglobin Fold

Hemoglobin S

Deoxyribonucleic Acid (DNA)

Intermolecular Contacts in Hemoglobin S

Myohemerythrin

Lysozyme (512)

Cytochrome c

Aspartate Transcarbamoylase (ATCase)

DNA

Induced Lac Repressor

Cytochrome c (unbound)

TATA-Binding Protein (TBP)

Tomato Bushy Stunt Virus (TBSV)

Transfer Ribonucleic Acid (tRNA)

B-DNA

Lac Repressor

Crambin

Deoxyhemoglobin

A-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

Lipid Droplets

Collagen and Extracellular Matrix

SARS-CoV-2 Fusion

Insulin Action

Biosites: Red Blood Cell

Last Universal Common Ancestor

Chloroplast

Biosites: Nucleus

RecA and DNA

Myoglobin in a Whale Muscle Cell

Biosites: Muscle

Transfer RNA and Gag Protein

Influenza Vaccine

Kinetochore

Biosites: Cytoplasm

SARS-CoV-2 mRNA Vaccine

Coronavirus Life Cycle

Bacteriophage T4 Infection

HIV Vaccine

Mycoplasma mycoides

Casein Micelle and Fat Globule in Milk

Biosites: Blood Plasma

Abiogenesis

Immunological Synapse

Model of a Mycoplasma Cell

Coronavirus

HIV-Infected Cell

Blood

Caulobacter Polar Microdomain

Escherichia coli

Red Blood Cell Cytoskeleton

CytoSkeleton

Zika Virus

Vascular Endothelial Growth Factor (VegF) Signaling

Phage-based COVID-19 Vaccine

Insulin Release

Poliovirus Neutralization

Measles Virus Proteins

Excitatory and Inhibitory Synapses

Autophagy

SARS-CoV-2 and Neutralizing Antibodies

Myelin

JCVI-syn3A Minimal Cell

Cellulose Synthase

Biosites: Basement Membrane

HIV in Blood Plasma

Escherichia coli Bacterium

Ebola Virus

Respiratory Droplet

Influenza Virus