The pH-dependence of the reduction potential determined through differential pulse voltammetry for the high potential iron sulfur proteins (HiPIP) from R. globiformis, C. vinosum, R. gelatinosus, E. vacuolata (I and II), E. halophila (I and II) is reported. A decrease in reduction potential with pH is invariably observed in the pH range where deprotonation of the imidazolium nitrogen of histidine residue(s) occurs. No pH dependence is observed for the only protein lacking histidines. It appears that surface charges like the His imidazolium groups are capable of influencing the reduction potential despite the known quencing of the electrostatic interactions due to solvent effects.

INFLUENCE OF SURFACE-CHARGES ON REDOX PROPERTIES IN HIGH-POTENTIAL IRON-SULFUR PROTEINS / Luchinat, C; Capozzi, F; Borsari, Marco; Battistuzzi, Gianantonio; Sola, Marco. - In: BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS. - ISSN 0006-291X. - STAMPA. - 203:(1994), pp. 436-442. [10.1006/bbrc.1994.2201]

INFLUENCE OF SURFACE-CHARGES ON REDOX PROPERTIES IN HIGH-POTENTIAL IRON-SULFUR PROTEINS

BORSARI, Marco;BATTISTUZZI, Gianantonio;SOLA, Marco
1994

Abstract

The pH-dependence of the reduction potential determined through differential pulse voltammetry for the high potential iron sulfur proteins (HiPIP) from R. globiformis, C. vinosum, R. gelatinosus, E. vacuolata (I and II), E. halophila (I and II) is reported. A decrease in reduction potential with pH is invariably observed in the pH range where deprotonation of the imidazolium nitrogen of histidine residue(s) occurs. No pH dependence is observed for the only protein lacking histidines. It appears that surface charges like the His imidazolium groups are capable of influencing the reduction potential despite the known quencing of the electrostatic interactions due to solvent effects.
1994
203
436
442
INFLUENCE OF SURFACE-CHARGES ON REDOX PROPERTIES IN HIGH-POTENTIAL IRON-SULFUR PROTEINS / Luchinat, C; Capozzi, F; Borsari, Marco; Battistuzzi, Gianantonio; Sola, Marco. - In: BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS. - ISSN 0006-291X. - STAMPA. - 203:(1994), pp. 436-442. [10.1006/bbrc.1994.2201]
Luchinat, C; Capozzi, F; Borsari, Marco; Battistuzzi, Gianantonio; Sola, Marco
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/10550
Citazioni
  • ???jsp.display-item.citation.pmc??? 3
  • Scopus 36
  • ???jsp.display-item.citation.isi??? 38
social impact