5ych | pdb_00005ych

Ancestral myoglobin aMbWb of Basilosaurus relative (monophyly)

spinqualitylabelsall models 5ych, resolution 1.35Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5ych is a 1 chain structure with sequence from Phycd. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: HEM, SO4 Related: 5yce, 5ycg Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed Extant cetaceans, such as sperm whale, acquired the great ability to dive into the ocean depths during the evolution from their terrestrial ancestor that lived about 50 million years ago. Myoglobin (Mb) is highly concentrated in the myocytes of diving animals, in comparison with those of land animals, and is thought to play a crucial role in their adaptation as the molecular aqualung. Here, we resurrected ancestral whale Mbs, which are from the common ancestor between toothed and baleen whales (Basilosaurus), and from a further common quadrupedal ancestor between whale and hippopotamus (Pakicetus). The experimental and theoretical analyses demonstrated that whale Mb adopted two distinguished strategies to increase the protein concentration in vivo along the evolutionary history of deep sea adaptation; gaining precipitant tolerance in the early phase of the evolution, and increase of folding stability in the late phase. Tracing whale myoglobin evolution by resurrecting ancient proteins.,Isogai Y, Imamura H, Nakae S, Sumi T, Takahashi KI, Nakagawa T, Tsuneshige A, Shirai T Sci Rep. 2018 Nov 15;8(1):16883. doi: 10.1038/s41598-018-34984-6. PMID:30442991 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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