Author/Editor | Bentrop, Joachim; Schillo, Markus; Gerdon, Gabriele; Drašlar, Kazimir; Paulsen, Reinhard | |
Title | UV-light-dependent binding of a visual arrestin 1 isoform to photoreceptor membranes in a neuropteran (Ascalaphus) compound eye | |
Type | članek | |
Source | FEBS Lett | |
Vol. and No. | Letnik 493 | |
Publication year | 2001 | |
Volume | str. 112-6 | |
Language | eng | |
Abstract | Arrestins are regulators of the active state of G-protein-coupled receptors. Towards elucidating the function of different arrestin subfamilies in sensory cells, we have isolated a novel arrestin 1, Am Arr1, from the UV photoreceptors of the neuropteran Ascalaphus macaronius. Am Arr1 forms a phylogenetic clade with antennal and visual Arrl isoforms of invertebrates. Am Arr1 undergoes a light-dependent binding cycle to photoreceptor membranes, as reported earlier only for members of the arrestin 2 subfamily. This suggests a common control mechanism for the active state of invertebrate rhodopsins and G-protein-coupled receptors of antennal sensory cells. Furthermore, it implies that a strict correlation of distinct arrestin isoforms to distinct functions is not a general principle for invertebrate sensory cells. | |
Descriptors | ARRESTIN PHOTORECEPTORS, INVERTEBRATE ULTRAVIOLET RAYS BASE SEQUENCE GENE LIBRARY SPECTROPHOTOMETRY AMINO ACID SEQUENCE BLOTTING, WESTERN BLOTTING, NORTHERN |