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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.

Myoglobin

Induced Lac Repressor

Crambin

Lysozyme (488)

Ribonuclease S

Collagen

Myohemerythrin

Hemoglobin

TATA-Binding Protein (TBP)

DPG-Hemoglobin Complex

Myoglobin Fold

Deoxyribonucleic Acid (DNA)

Cytochrome c (unbound)

B-DNA

Deoxyhemoglobin

Carboxypeptidase A

Intermolecular Contacts in Hemoglobin S

Cytochrome c

Lysozyme (512)

Immunoglobulin G (IgG)

Oxyhemoglobin

Transfer Ribonucleic Acid (tRNA)

Hemoglobin (1000)

A-DNA

Trypsin

Z-DNA

Aspartate Transcarbamoylase (ATCase)

Tomato Bushy Stunt Virus (TBSV)

Lac Repressor

DNA

Hemoglobin S

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