Home | My Profile | Contact Us
Research Trends Products  |   order gateway  |   author gateway  |   editor gateway  
Register | Forgot Password

Author Resources
 Author Gateway
 Article submission guidelines

Editor Resources
 Editor/Referee Gateway

 Regional Subscription Agents/Distributors
Trends in Photochemistry & Photobiology   Volumes    Volume 3  Issue 1
Photoresponsive peptide and polypeptide systems XII: Induced CD and photoconversion of poly (L-lysine)-retinaldehyde complexes
Hiroyuki Yamamoto, Ayako Nishida
Pages: 81 - 90
Number of pages: 10
Trends in Photochemistry & Photobiology
Volume 3  Issue 1

Copyright © 1994 Research Trends. All rights reserved

Induced circular dichorism (CD) and photochemistry due to the complexes (Schiff bases) from poly(L-lysine) (PLL; degrees of polymerization, DPs, from 1 to 2500) and all-trans, 9- and 13-cis retinaldehydes have been investigated in a methanol-water mixed solvent (1:1, v/v). The complex of uncharged PLL with DP = 26 and all trans retinaldehyde takes a β -structure exhibiting a very strong ellipticities at 304 nm with [θ]304 = 510,000, at 338 nm with [θ]338 = -713,000 and at 397 nm with [θ]397 = 155,000, while the complexes of uncharged PLL with DPs from 60 to 2500 take an α-helix structure exhibiting the induced CD ellipticities at about 310 nm, 337 nm and 380 nm. Among these α-helical complexes the PLL-all trans retinaldehyde complex with DP = 460 exhibited the largest induced ellipticities. PLL and 9- and 13-cis retinaldehyde complexes exhibited smaller induced ellipticities, respectively. On irradiation at 360 nm for 3-5 min, the induced CD of the PLL (DPs = 26 and 460)-all trans and cis retinaldehyde complexes disappeared irreversibly. The induced CD and photochemical results including the electronic absorption spectra have been discussed as the simplest photoresponsive model systems including retinaldehydes.
Buy this Article


Buy this article
Buy this volume
Subscribe to this title
Shopping Cart

Quick Links
Search Products
Browse in Alphabetical Order : Journals
Browse by Subject Classification : Journals

Ordering Information Ordering Information
Downloadable forms Downloadable Forms