Crystal_structure_miningInteresting ChemistryChemical Sciences

Blue blood.

https://doi.org/10.59350/2232m-40w05
Published in Henry Rzepa's Blog

Respiratory pigments are metalloproteins that transport O 2 , the best known being the bright red/crimson coloured hemoglobin in human blood. The colour derives from Fe 2+ at the core of a tetraporphyrin ring. But less well known is blue blood , and here the colour derives from an oxyhemocyanin unit based on Cu 1+ (the de-oxy form is colourless) rather than iron.

References

Colloid and Surface ChemistryBiochemistryGeneral ChemistryCatalysis

A new model for dioxygen binding in hemocyanin. Synthesis, characterization, and molecular structure of the .mu.-.eta.2:.eta.2 peroxo dinuclear copper(II) complexes, [Cu(HB(3,5-R2pz)3)]2(O2) (R = isopropyl and Ph)

https://doi.org/10.1021/ja00030a025
Published in Journal of the American Chemical Society
Authors Nobumasa Kitajima, Kiyoshi Fujisawa, Chisato Fujimoto, Yoshihiko Morooka, Shinji Hashimoto, Teizo Kitagawa, Koshiro Toriumi, Kazuyuki Tatsumi, Akira Nakamura
Physical and Theoretical Chemistry

The bridge towards a more stable and active side-on-peroxido (Cu2II(µ-η2:η2-O2)) complex as a tyrosinase model system

https://doi.org/10.1039/d2fd00162d
Published in Faraday Discussions
Authors Rosalie Dalhoff, Regina Schmidt, Lena Steeb, Kristina Rabatinova, Matthias Witte, Simon Teeuwen, Salim Benjamaâ, Henrika Hüppe, Alexander Hoffmann, Sonja Herres-Pawlis

A novel dinucleating bis(pyrazolyl)methane ligand was developed for tyrosinase model systems.