scholarly journals Spectral Tuning of Deep Red Cone Pigments†

Biochemistry ◽  
2008 ◽  
Vol 47 (16) ◽  
pp. 4614-4620 ◽  
Author(s):  
Tabitha L. Amora ◽  
Lavoisier S. Ramos ◽  
Jhenny F. Galan ◽  
Robert R. Birge
Keyword(s):  
Spectral Tuning ◽  
Cone Pigments

Spectral Tuning of Rhodopsin and Visual Cone Pigments

2014 ◽  
Vol 136 (7) ◽  
pp. 2723-2726 ◽  
Author(s):  
Xiuwen Zhou ◽  
Dage Sundholm ◽  
Tomasz A. Wesołowski ◽  
Ville R. I. Kaila
Keyword(s):  
Spectral Tuning ◽  
Cone Pigments

Spectral Tuning and Evolution of Short Wave-Sensitive Cone Pigments in Cottoid Fish from Lake Baikal†

Biochemistry ◽  
2002 ◽  
Vol 41 (19) ◽  
pp. 6019-6025 ◽  
Author(s):  
Jill A. Cowing ◽  
Subathra Poopalasundaram ◽  
Susan E. Wilkie ◽  
James K. Bowmaker ◽  
David M. Hunt
Keyword(s):  
Lake Baikal ◽  
Short Wave ◽  
Spectral Tuning ◽  
Cone Pigments ◽  
Cottoid Fish

Spectral Tuning in the Mammalian Short-Wavelength Sensitive Cone Pigments†

Biochemistry ◽  
2002 ◽  
Vol 41 (21) ◽  
pp. 6860-6865 ◽  
Author(s):  
Jeffry I. Fasick ◽  
Meredithe L. Applebury ◽  
Daniel D. Oprian
Keyword(s):  
Short Wavelength ◽  
Spectral Tuning ◽  
Cone Pigments

scholarly journals Spectral Tuning of Ultraviolet Cone Pigments: An Interhelical Lock Mechanism

2013 ◽  
Vol 135 (51) ◽  
pp. 19064-19067 ◽  
Author(s):  
Sivakumar Sekharan ◽  
Victoria L. Mooney ◽  
Ivan Rivalta ◽  
Manija A. Kazmi ◽  
Maureen Neitz ◽  
...  
Keyword(s):  
Spectral Tuning ◽  
Cone Pigments

Spectral tuning of double resonant nanolaminate plasmonic nanoantennas with a fixed size

2021 ◽  
Vol 118 (24) ◽  
pp. 241108
Author(s):  
E. Mejia ◽  
Y. Qian ◽  
S. A. Safiabadi Tali ◽  
J. Song ◽  
W. Zhou
Keyword(s):  
Spectral Tuning ◽  
Fixed Size ◽  
Plasmonic Nanoantennas

scholarly journals The molecular mechanisms of light adaption in light-harvesting complexes of purple bacteria revealed by a multiscale modeling

2019 ◽  
Vol 10 (42) ◽  
pp. 9650-9662 ◽  
Author(s):  
Felipe Cardoso Ramos ◽  
Michele Nottoli ◽  
Lorenzo Cupellini ◽  
Benedetta Mennucci
Keyword(s):  
Multiscale Modeling ◽  
Molecular Mechanisms ◽  
Light Harvesting ◽  
Purple Bacteria ◽  
Spectral Tuning ◽  
Light Harvesting Complexes

The spectral tuning of LH2 antenna complexes arises from H-bonding, acetyl torsion, and inter-chromophore couplings.

Salamander rods and cones contain distinct transducin alpha subunits

2000 ◽  
Vol 17 (6) ◽  
pp. 847-854 ◽  
Author(s):  
JAMES C. RYAN ◽  
SERGEY ZNOIKO ◽  
LIN XU ◽  
ROSALIE K. CROUCH ◽  
JIAN-XING MA
Keyword(s):  
Amino Acid ◽  
Blot Analysis ◽  
Cellular Localization ◽  
Amino Acid Level ◽  
Single Copy ◽  
Lower Vertebrate ◽  
Rods And Cones ◽  
Sequence Identity ◽  
Outer Segments ◽  
Cone Pigments

The mammalian retina is known to contain two distinct transducins that interact with their respective rod and cone pigments. However, there are no reports of a nonmammalian species having two distinct transducins. In the present study, we report the cloning and cellular localization of two transducin α subunits (Gαt) from the tiger salamander. Through degenerate polymerase chain reaction (PCR) and subsequent screening of a salamander retina cDNA library, we have identified two forms of Gαt. When compared to existing sequences in GenBank, the cloned subunits showed high similarity to rod and cone transducins. The salamander Gαt-1 has 91.2–93.7% amino acid sequence identity to mammalian rod Gαt subunits and 79.7–80.9% to mammalian cone Gαts. The salamander Gαt-2 has 86.2–87.9% sequence identity to mammalian cone Gαts and 78.9–80.9% to mammalian rod Gαts at the amino acid level. The Gαt-1 cDNA encodes 350 amino acids while the Gαt-2 cDNA encodes 354 residues, which is typical for rod and cone Gαts, respectively, and we thus identified the Gαt-1 as rod and Gαt-2 as cone Gαt. Sequences identified as effector binding sites and GTPase activity regions are highly conserved between the two subunits. Genomic Southern blot analysis showed that rod and cone Gαt subunits are both encoded by single-copy genes. Northern blot analysis identified retina-specific transcripts of 3.0 kb for rod Gαt and 2.6 kb for cone Gαt. Immunohistochemistry in the flat-mounted salamander retina demonstrated that rod Gαt is localized to rods, predominantly in the outer segments; similarly, cone Gαt is localized to cone outer segments. The results confirm that the two sequences encode rod and cone transducins and demonstrate that this lower vertebrate contains two distinct transducins that are localized specifically to rod and cone photoreceptors.

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