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Nitrogen and Sulphur at the Active Centre of Carboxypeptidase A (1961)

VALLEE, BERT L. ; WILLIAMS, ROBERT J. P. ; COLEMAN, JOSEPH E.

[s.l.] : Nature Publishing Group

Nature 190 (1961), S. 633-634

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ISSN: 1476-4687

Source: Nature Archives 1869 - 2009

Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics

Notes: [Auszug] We now wish to present further evidence in support of the hypothesis that a nitrogenous group is involved in the binding of metals to the active site of carboxypeptidase A. The stabilities of the complexes of these metals with a series of nitrogen-sulphur bidentate ligands correlate closely with ...

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1038/190633a0

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The medium in electron transfer proteins (1997)

Williams, Robert J. P.

Springer

JBIC 2 (1997), S. 373-377

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ISSN: 1432-1327

Keywords: Key words Electron transfer ; Coupling factors ; Transfer distances ; Transfer pathways

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Chemistry and Pharmacology

Notes: Abstract The problems of the description of a protein matrix as a medium for electron transfer in biological systems are described. It is not the uncertainty in rate constants but that of measuring donor-acceptor distances or of pathway lengths which makes it impossible to decide between the merits of these two approximations to a full quantum-mechanical treatment of the matrix. However, proteins do not seem to have designed pathways to fulfil their functions but just separations of donors and acceptors in space which then allows gated flow in mobile structures.