Binding to an A3 adenosine receptor.

A cellular process that results in the biosynthesis of constituent macromolecules, assembly, and arrangement of constituent parts of a primary cell septum following nuclear division.

A relatively pale zone traversing the center of the A band of a sarcomere, visible in relaxed muscle fibers; consists of the central portion of thick (myosin) filaments that are not overlapped by thin (actin) filaments.

The dark-staining region of a sarcomere, in which myosin thick filaments are present; the center is traversed by the paler H zone, which in turn contains the M line.

A region of a sarcomere that appears as a light band on each side of the Z disc, comprising a region of the sarcomere where thin (actin) filaments are not overlapped by thick (myosin) filaments; contains actin, troponin, and tropomyosin; each sarcomere includes half of an I band at each end.

The process of restoring the photoreceptor cell to its unexcited state after termination of the stimulus (photon).

Maintenance of the excited state of a photoreceptor cell to produce a steady-state current as a result of signals generated by rhodopsin activation by a photon.

Hyperpolarization (vertebrates) or depolarization (invertebrates) of the photoreceptor cell membrane via closing/opening of cation specific channels as a result of signals generated by rhodopsin activation by a photon.

The process in which metarhodopsin is prevented from generating molecular signals. Activated rhodopsin (R*) is inactivated by a two-step process: first, R* is phosphorylated by rhodopsin kinase which lowers the activity of R*. Second, the protein arrestin binds to phosphorylated R* to de-activate it.

The pigmented membrane of a plasma membrane-derived thylakoid.

The lipid bilayer associated with a plasma membrane-derived chromatophore; surrounds chromatophores that form complete vesicles.

Catalysis of the reaction: NADH + H+ + plastoquinone = NAD+ + plastoquinol.

OBSOLETE. The specific immune response mediated by antibodies. As in, but not restricted to, the taxon Protostomia (Protostomia, ncbi_taxonomy_id:33317).

The chemical reactions and pathways resulting in the formation of rhodopsin, a brilliant purplish-red, light-sensitive visual pigment found in the rod cells of the retinas.