Escherichia coli Bacterium
Cellulose Synthase
Myoglobin in a Whale Muscle Cell
Collagen and Extracellular Matrix
Immunological Synapse
Coronavirus Life Cycle
Respiratory Droplet
SARS-CoV-2 and Neutralizing Antibodies
SARS-CoV-2 Fusion
SARS-CoV-2 mRNA Vaccine
Red Blood Cell Cytoskeleton
Measles Virus Proteins
Lipid Droplets
Poliovirus Neutralization
Influenza Vaccine
Excitatory and Inhibitory Synapses
Zika Virus
Insulin Action
Ebola Virus
Mycoplasma mycoides
Biosites: Basement Membrane
Biosites: Red Blood Cell
Biosites: Blood Plasma
Biosites: Cytoplasm
Biosites: Muscle
Biosites: Nucleus
HIV in Blood Plasma
Escherichia coli

Molecular Landscapes by David S. Goodsell

Myoglobin in a Whale Muscle Cell, 2021

Acknowledgement: Illustration by David S. Goodsell, RCSB Protein Data Bank. doi: 10.2210/rcsb_pdb/goodsell-gallery-032

Whale muscles contain many myoglobin molecules (red) to store oxygen during their deep dives. This cross section shows the space between two muscle sarcomeres, which are shown at right and left with actin thin filaments in yellow and myosin thick filaments in tan. The space also includes many glycolytic enzymes and other other enzymes involved in energy production (blue) and glycogen granules (purple). A tubule of the sarcoplasmic reticulum is shown at the bottom, with many calcium pumps (blue molecules in the membrane) and calcium storage proteins (green) that concentrate calcium inside, for use in control of muscle contraction. This painting was created as part of the celebration of the 50th anniversary of the Protein Data Bank.

Selected References

  • Gros G, Wittenberg BA & Jue T (2010) Myoglobin's old and new clothes: from molecular structure to function in living cells. J. Exp. Biol. 213, 2713-2725.
  • Maughan DW, Henkin JA & Vigoreaux JO (2005) Concentrations of glycolytic enzymes and other cytosolic proteins in the diffusible fraction of a vertebrate muscle proteome. Mol. Cell. Proteomics 4, 1541-1549.