Molecular Landscapes by David S. Goodsell
Casein Micelle and Fat Globule in Milk, 2021
Acknowledgement: Illustration by David S. Goodsell, RCSB Protein Data Bank. doi: 10.2210/rcsb_pdb/goodsell-gallery-039
This illustration shows a cross section through a casein micelle (tan, lower center) and a fat globule (yellow, upper left) from cow's milk. The micelle includes many unstructured alpha and beta casein chains interacting with small calcium phosphate nanoclusters (white), and kappa casein chains extending from the surface. The fat globule is surrounded by a multi-layered membrane with many embedded proteins, filled with fat molecules (yellow) and a few carotene molecules (orange). Whey proteins are shown in darker shades around the micelle.
This illustration was presented as part of the Molecule of the Month on Casein Kinase.
Fat globule membrane
B. Xanthine oxidase
C. Fatty-acid-binding protein
G. Proteose peptone
P. Calcium phosphate nanocluster
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