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.

Hemoglobin

Oxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

Crambin

Tomato Bushy Stunt Virus (TBSV)

Lysozyme (512)

Hemoglobin S

Intermolecular Contacts in Hemoglobin S

Trypsin

Immunoglobulin G (IgG)

DNA

Z-DNA

Ribonuclease S

Induced Lac Repressor

Myoglobin

Deoxyhemoglobin

Hemoglobin (1000)

Carboxypeptidase A

Lysozyme (488)

DPG-Hemoglobin Complex

Collagen

Aspartate Transcarbamoylase (ATCase)

Myoglobin Fold

TATA-Binding Protein (TBP)

Deoxyribonucleic Acid (DNA)

Lac Repressor

Myohemerythrin

B-DNA

A-DNA

Cytochrome c (unbound)

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

Transfer RNA and Gag Protein

Biosites: Basement Membrane

Influenza Virus

Casein Micelle and Fat Globule in Milk

Mycoplasma mycoides

CytoSkeleton

Kinetochore

Insulin Action

Insulin Release

Cellulose Synthase

Abiogenesis

Zika Virus

Respiratory Droplet

Immunological Synapse

Caulobacter Polar Microdomain

Biosites: Cytoplasm

Ebola Virus

Measles Virus Proteins

Coronavirus Life Cycle

Poliovirus Neutralization

Red Blood Cell Cytoskeleton

Chloroplast

Bacteriophage T4 Infection

Excitatory and Inhibitory Synapses

HIV in Blood Plasma

RecA and DNA

Biosites: Nucleus

Blood

Myelin

Myoglobin in a Whale Muscle Cell

SARS-CoV-2 Fusion

Autophagy

Vascular Endothelial Growth Factor (VegF) Signaling

Biosites: Muscle

Biosites: Blood Plasma

Escherichia coli

Escherichia coli Bacterium

JCVI-syn3A Minimal Cell

Coronavirus

Phage-based COVID-19 Vaccine

Influenza Vaccine

Collagen and Extracellular Matrix

HIV Vaccine

SARS-CoV-2 and Neutralizing Antibodies

Biosites: Red Blood Cell

Model of a Mycoplasma Cell

Lipid Droplets

SARS-CoV-2 mRNA Vaccine

Last Universal Common Ancestor

HIV-Infected Cell