Oxygenic photosynthesis, the principal converter of sunlight into chemical energy on earth,
is catalyzed by four multi-subunit membrane-protein complexes: photosystem I (PSI) …

Oxygenic photosynthesis is the principal producer of both oxygen and organic matter on
earth. The primary step in this process—the conversion of sunlight into chemical energy—is …

The family of NRAMP metal ion transporters functions in diverse organisms from bacteria to
human. NRAMP1 functions in metal transport across the phagosomal membrane of …

Mammalian cells proteolytically release (shed) the extracellular domains of many cell-
surface proteins1. Modification of the cell surface in this way can alter the cell's …

The effects of broad-spectrum antibiotic and placebo therapy in patients with chronic
obstructive pulmonary disease in exacerbation were compared in a randomized, double …

The reliability of the various Somogyi-Shaffer-Hartmann (1, 2) copper reagents for glucose
determination in biological material has been established. Adaptation of these reagents to …

The ectodomains of numerous proteins are released from cells by proteolysis to yield
soluble intercellular regulators. The responsible protease, tumor necrosis factor-α converting …

The current research tested the hypothesis that making many choices impairs subsequent
self-control. Drawing from a limited-resource model of self-regulation and executive function …

A complementary DNA clone (designated GAT-1) encoding a transporter for the
neurotransmitter γ-aminobutyric acid (GABA) has been isolated from rat brain, and its …

Interleukin-1β (IL-1β) mediates a wide range of immune and inflammatory responses. The
active cytokine is generated by proteolytic cleavage of an inactive precursor. A …