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Molecule of the Month

August 2026

Histone Ubiquitination and Deubiquitination Complexes

Enzymes that add and remove marks from chromosomes to keep gene regulation in balance

3D View: 4R8P

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Rainbow Chain Structure

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Guide to Understanding PDB Data

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Exploring the Workhorses of Biotechnology: Using RCSB.org to analyze plastic-degrading enzymes

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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.

Lysozyme (512)

Deoxyribonucleic Acid (DNA)

Immunoglobulin G (IgG)

Cytochrome c (unbound)

Collagen

Myohemerythrin

DNA

Trypsin

Crambin

Cytochrome c

Intermolecular Contacts in Hemoglobin S

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

Induced Lac Repressor

Z-DNA

Deoxyhemoglobin

A-DNA

Ribonuclease S

Aspartate Transcarbamoylase (ATCase)

Myoglobin

Hemoglobin

B-DNA

Carboxypeptidase A

Lysozyme (488)

Myoglobin Fold

Hemoglobin (1000)

TATA-Binding Protein (TBP)

Transfer Ribonucleic Acid (tRNA)

DPG-Hemoglobin Complex

Hemoglobin S

Oxyhemoglobin

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