A haemoprotein was purified to apparent homogeneity from Bengal-gram seeds. The purified protein exhibited an absorption maximum at 412 nm (Soret band) that upon reduction with dithionite gave rise to a shift in the Soret band to 426 nm with concomitant appearance of an alpha-band at 559 nm and a beta-band at 530 nm. In the reduced state the Bengal-gram haemoprotein showed reactivity towards CO...

Introduction: This article is part of the Focus Theme of Methods of Information in Medicine on “Big Data and Analytics in Healthcare”. Background: Depression is a common and often undiagnosed condition for patients with diabetes. It is also a condition that significantly impacts healthcare outcomes, use, and cost as well as elevating suicide risk. Therefore, a model to predict depression among ...

PAOLO PELLEGRI, GIANLUCA NOVATI, RAIMONDO SCHETTINI 1 DISCO DIPARTIMENTO DI INFORMATICA, SISTEMISTICA E COMUNICAZIONE UNIVERSITÀ DEGLI STUDI DI MILANO – BICOCCA Via Bicocca degli Arcimboldi, 8 – 20126, Milano Italy Phone. +39-02-64487840, Fax +39-02-64487839 [novati, pellegri, schettini]@disco.unimib.it AND 2 ITC, ITALIAN NATIONAL RESEARCH COUNCIL Via Bassini, 15 – 20133, Milano – Italy Phone: ...

Absorbance changes of C-550 and cytochrome b(559), and fluorescence-yield changes were measured during irradiation of chloroplasts at -196 degrees . The photo-reduction of C-550 proceeded more rapidly than the photo-oxidation of cytochrome b(559), and the fluorescence-yield change had similar kinetics to the cytochrome b(559) change. The fluorescence yield of chloroplasts exposed to a 16-musec ...

www.sciencemag.org (this information is current as of February 14, 2007 ): The following resources related to this article are available online at http://www.sciencemag.org/cgi/content/full/304/5670/559 version of this article at: including high-resolution figures, can be found in the online Updated information and services, http://www.sciencemag.org/cgi/content/full/304/5670/559/DC1 can be fou...

Despite many years of study, the physiological role of cytochrome b-559 (Cyt b-559) within the photosystem II (PSII) complex still remains unclear. Here we describe the analysis of a mutant of the green alga Chlamydomonas reinhardtii in which the His ligand to the haem, provided by the alpha subunit, has been replaced by a Cys residue. The mutant is unable to grow photoautotrophically but can a...

Although cytochrome b-559 has long been known as a membrane-bound redox component closely linked to the reaction center of the oxygen-generating photosystem (PSII), its role in photosynthesis has remained obscure. This paper reports evidence and outlines a hypothesis in support of a "b-559 cycle"-i.e., a light-induced, cytochrome b-559-dependent, cyclic electron transport pathway around PSII th...