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.

Z-DNA

Intermolecular Contacts in Hemoglobin S

Deoxyhemoglobin

Trypsin

Lac Repressor

DNA

DPG-Hemoglobin Complex

Myoglobin

B-DNA

Hemoglobin (1000)

Transfer Ribonucleic Acid (tRNA)

Cytochrome c

Lysozyme (512)

Oxyhemoglobin

Myohemerythrin

Tomato Bushy Stunt Virus (TBSV)

Ribonuclease S

Deoxyribonucleic Acid (DNA)

Lysozyme (488)

Carboxypeptidase A

Collagen

A-DNA

Immunoglobulin G (IgG)

Hemoglobin S

TATA-Binding Protein (TBP)

Myoglobin Fold

Aspartate Transcarbamoylase (ATCase)

Crambin

Hemoglobin

Induced Lac Repressor

Cytochrome c (unbound)

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

Biosites: Red Blood Cell

Last Universal Common Ancestor

SARS-CoV-2 mRNA Vaccine

Coronavirus Life Cycle

Cellulose Synthase

Myelin

Mycoplasma mycoides

CytoSkeleton

Respiratory Droplet

HIV Vaccine

HIV-Infected Cell

Autophagy

Escherichia coli

Biosites: Cytoplasm

Chloroplast

Escherichia coli Bacterium

Casein Micelle and Fat Globule in Milk

Biosites: Muscle

Immunological Synapse

Insulin Release

Influenza Virus

Excitatory and Inhibitory Synapses

SARS-CoV-2 Fusion

Phage-based COVID-19 Vaccine

Measles Virus Proteins

Zika Virus

Collagen and Extracellular Matrix

Kinetochore

Biosites: Blood Plasma

Red Blood Cell Cytoskeleton

Insulin Action

Abiogenesis

Biosites: Basement Membrane

JCVI-syn3A Minimal Cell

Myoglobin in a Whale Muscle Cell

Vascular Endothelial Growth Factor (VegF) Signaling

Lipid Droplets

Biosites: Nucleus

Model of a Mycoplasma Cell

Ebola Virus

Coronavirus

HIV in Blood Plasma

Transfer RNA and Gag Protein

Caulobacter Polar Microdomain

Poliovirus Neutralization

RecA and DNA

Blood

SARS-CoV-2 and Neutralizing Antibodies

Influenza Vaccine

Bacteriophage T4 Infection