Structural snapshot of cyclic nucleotide binding domains from cyclic nucleotide-sensitive ion channels

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Structural snapshot of cyclic nucleotide binding domains from cyclic nucleotide-sensitive ion channels.

Cyclic nucleotide-binding domains (CNBDs) that are present in various channel proteins play crucial roles in signal amplification cascades. Although atomic resolution structures of some of those CNBDs are available, the detailed mechanism by which they confer cyclic nucleotide-binding to the ion channel pore remains poorly understood. In this review, we describe structural insights about cyclic...

متن کامل

Cyclic nucleotide-gated ion channels.

Cyclic nucleotide-gated (CNG) channels are nonselective cation channels first identified in retinal photoreceptors and olfactory sensory neurons (OSNs). They are opened by the direct binding of cyclic nucleotides, cAMP and cGMP. Although their activity shows very little voltage dependence, CNG channels belong to the superfamily of voltage-gated ion channels. Like their cousins the voltage-gated...

متن کامل

Cooperativity in cyclic nucleotide-gated ion channels

Cooperativity is one of the marvelous "emergent" behaviors of macro-molecules undergoing multimolecular reactions (Perutz, 1990). Cooperativity sculpts the potential energy landscape of such a reaction so as to create a seemingly teleological pathway for reaching and stabilizing a particular state for example, a multimeric protein with multiple ligand sites occupied. Ligandgated ion channels pr...

متن کامل

Cyclic Nucleotide–Gated Channels

In voltage- and cyclic nucleotide-gated ion channels, the amino-acid loop that connects the S5 and S6 transmembrane domains, is a major component of the channel pore. It determines ion selectivity and participates in gating. In the alpha subunit of cyclic nucleotide-gated channels from bovine rod, the pore loop is formed by the residues R345-S371, here called R1-S27. These 24 residues were muta...

متن کامل

Cyclic Nucleotide–gated Channels

abs t rac t Middendorf et al. (Middendorf, T.R., R.W. Aldrich, and D.A. Baylor. 2000. J. Gen. Physiol. 116:227– 252) showed that ultraviolet light decreases the current through cloned cyclic nucleotide–gated channels from bovine retina activated by high concentrations of cGMP. Here we probe the mechanism of the current reduction. The channels’ open probability before irradiation, P o (0), deter...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Biological Chemistry

سال: 2013

ISSN: 1437-4315,1431-6730

DOI: 10.1515/hsz-2013-0228