Molecule of the Month
December 2025

FOXP3

A master transcriptional regulator of immune tolerance

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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.

A-DNA

B-DNA

Crambin

Lac Repressor

Ribonuclease S

Hemoglobin (1000)

Carboxypeptidase A

Induced Lac Repressor

DNA

Myoglobin Fold

Tomato Bushy Stunt Virus (TBSV)

Cytochrome c (unbound)

Z-DNA

Cytochrome c

Lysozyme (512)

Aspartate Transcarbamoylase (ATCase)

Collagen

Trypsin

Transfer Ribonucleic Acid (tRNA)

Hemoglobin S

Myohemerythrin

DPG-Hemoglobin Complex

TATA-Binding Protein (TBP)

Hemoglobin

Myoglobin

Deoxyribonucleic Acid (DNA)

Oxyhemoglobin

Intermolecular Contacts in Hemoglobin S

Lysozyme (488)

Immunoglobulin G (IgG)

Deoxyhemoglobin

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

Influenza Virus

Myoglobin in a Whale Muscle Cell

Abiogenesis

Transfer RNA and Gag Protein

HIV-Infected Cell

CytoSkeleton

Biosites: Basement Membrane

SARS-CoV-2 Fusion

Kinetochore

Blood

Biosites: Nucleus

Immunological Synapse

Casein Micelle and Fat Globule in Milk

Red Blood Cell Cytoskeleton

Biosites: Blood Plasma

SARS-CoV-2 mRNA Vaccine

Excitatory and Inhibitory Synapses

Biosites: Red Blood Cell

Phage-based COVID-19 Vaccine

RecA and DNA

HIV in Blood Plasma

Escherichia coli

Lipid Droplets

Caulobacter Polar Microdomain

Insulin Release

Myelin

Vascular Endothelial Growth Factor (VegF) Signaling

Chloroplast

Ebola Virus

Zika Virus

Escherichia coli Bacterium

Last Universal Common Ancestor

SARS-CoV-2 and Neutralizing Antibodies

Insulin Action

Mycoplasma mycoides

Respiratory Droplet

Influenza Vaccine

HIV Vaccine

Collagen and Extracellular Matrix

Autophagy

Biosites: Cytoplasm

JCVI-syn3A Minimal Cell

Coronavirus

Poliovirus Neutralization

Coronavirus Life Cycle

Cellulose Synthase

Bacteriophage T4 Infection

Biosites: Muscle

Measles Virus Proteins

Model of a Mycoplasma Cell