Molecule of the Month
March 2026

Lenacapavir

A potent and long-acting drug that targets the HIV capsid

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PDB data help explain fundamental biology, biomedicine, bioengineering/biotechnology, and energy sciences
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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.

Tomato Bushy Stunt Virus (TBSV)

Hemoglobin

Transfer Ribonucleic Acid (tRNA)

Lysozyme (488)

Lac Repressor

Immunoglobulin G (IgG)

Myoglobin Fold

Hemoglobin (1000)

DPG-Hemoglobin Complex

Intermolecular Contacts in Hemoglobin S

Myohemerythrin

Collagen

Cytochrome c (unbound)

Carboxypeptidase A

Oxyhemoglobin

Aspartate Transcarbamoylase (ATCase)

Lysozyme (512)

Deoxyribonucleic Acid (DNA)

Hemoglobin S

TATA-Binding Protein (TBP)

DNA

Z-DNA

Trypsin

Deoxyhemoglobin

A-DNA

Myoglobin

Ribonuclease S

Crambin

Induced Lac Repressor

B-DNA

Cytochrome c

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

Poliovirus Neutralization

Autophagy

HIV Vaccine

Cellulose Synthase

Biosites: Cytoplasm

Model of a Mycoplasma Cell

Biosites: Blood Plasma

Myoglobin in a Whale Muscle Cell

Biosites: Basement Membrane

Last Universal Common Ancestor

HIV in Blood Plasma

Biosites: Red Blood Cell

Kinetochore

Respiratory Droplet

Myelin

Measles Virus Proteins

RecA and DNA

Escherichia coli

Chloroplast

Caulobacter Polar Microdomain

SARS-CoV-2 Fusion

JCVI-syn3A Minimal Cell

Bacteriophage T4 Infection

Immunological Synapse

Influenza Vaccine

Lipid Droplets

Vascular Endothelial Growth Factor (VegF) Signaling

Abiogenesis

Casein Micelle and Fat Globule in Milk

Coronavirus Life Cycle

Excitatory and Inhibitory Synapses

Escherichia coli Bacterium

Influenza Virus

Insulin Action

SARS-CoV-2 mRNA Vaccine

Ebola Virus

Biosites: Nucleus

Transfer RNA and Gag Protein

Insulin Release

Blood

Biosites: Muscle

Phage-based COVID-19 Vaccine

Coronavirus

Mycoplasma mycoides

CytoSkeleton

HIV-Infected Cell

SARS-CoV-2 and Neutralizing Antibodies

Red Blood Cell Cytoskeleton

Collagen and Extracellular Matrix

Zika Virus