Molecule of the Month
November 2026

Artificial Metalloenzymes

Engineering enzymes to catalyze reactions never seen in nature

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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

Aspartate Transcarbamoylase (ATCase)

Oxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

Hemoglobin

Deoxyhemoglobin

Hemoglobin S

Lac Repressor

Ribonuclease S

Lysozyme (512)

Immunoglobulin G (IgG)

Myohemerythrin

Intermolecular Contacts in Hemoglobin S

Z-DNA

Myoglobin Fold

Hemoglobin (1000)

Collagen

Tomato Bushy Stunt Virus (TBSV)

TATA-Binding Protein (TBP)

B-DNA

DNA

Induced Lac Repressor

Deoxyribonucleic Acid (DNA)

Lysozyme (488)

Crambin

Cytochrome c

DPG-Hemoglobin Complex

A-DNA

Cytochrome c (unbound)

Carboxypeptidase A

Trypsin

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

HIV Vaccine

Biosites: Muscle

Last Universal Common Ancestor

Coronavirus Life Cycle

Casein Micelle and Fat Globule in Milk

SARS-CoV-2 Fusion

Caulobacter Polar Microdomain

Immunological Synapse

Lipid Droplets

Model of a Mycoplasma Cell

SARS-CoV-2 and Neutralizing Antibodies

Abiogenesis

Biosites: Blood Plasma

Transfer RNA and Gag Protein

Insulin Release

Phage-based COVID-19 Vaccine

Collagen and Extracellular Matrix

Escherichia coli

Poliovirus Neutralization

SARS-CoV-2 mRNA Vaccine

Blood

Red Blood Cell Cytoskeleton

Biosites: Cytoplasm

Escherichia coli Bacterium

Autophagy

Influenza Virus

Biosites: Basement Membrane

Ebola Virus

HIV-Infected Cell

JCVI-syn3A Minimal Cell

Myoglobin in a Whale Muscle Cell

Mycoplasma mycoides

Respiratory Droplet

RecA and DNA

Coronavirus

Excitatory and Inhibitory Synapses

Measles Virus Proteins

Myelin

Vascular Endothelial Growth Factor (VegF) Signaling

Kinetochore

Bacteriophage T4 Infection

Zika Virus

Cellulose Synthase

Chloroplast

Influenza Vaccine

Biosites: Nucleus

Insulin Action

HIV in Blood Plasma

CytoSkeleton

Biosites: Red Blood Cell