Conformational dependence of integrin‐binding peptides derived from homologous loop regions in the laminin α chains
Conformational dependence of integrin‐binding peptides derived from homologous loop regions in the laminin α chains
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源自层粘连蛋白 α 链同源环区域的整合素结合肽的构象依赖性
DOI:
10.1002/psc.3284
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发表时间:
2020
影响因子:
2.1
通讯作者:
Nomizu Motoyoshi
中科院分区:
文献类型:
--
作者:
Ishikawa Masaya;Hamada Keisuke;Yamada Yuji;Kumai Jun;Katagiri Fumihiko;Kikkawa Yamato;Nomizu Motoyoshi
Laminin α chains (α1–α5 chains) are expressed in a tissue‐ and developmental stage‐specific manner and have diverse chain‐specific biological functions. Especially, laminin globular (LG) modules (LG1–LG5) located at the C‐terminus of the α chains play a critical role in the biological activities of laminins. Each LG module is composed of a 14‐stranded β‐sheet (A‐N) sandwich structure. We previously screened cell attachment activity of the loop regions between the E and F strands in the LG modules using 17 homologous peptides (EF peptides) and found that four active EF peptides bind to integrin α2β1. One of the four peptides, G4EF1 demonstrated improved cell attachment activity when cyclized. Here, we focused on the remaining three integrin α2β1‐binding EF peptides (G5EF1, G3EF3, and G5EF5) and analyzed the relationship between their peptide conformation and cell attachment activity. First, we determined their active core sequences and found that G5EF1z (IGLEIVDGKVLFHVNN), G3EF3z (LLVTLEDGHIALST), and G5EF5z (KVLTEQVL) are the core sequences. Cyclic peptides of the core sequences (cycloG5EF1z, cycloG3EF3z, and cycloG5EF5z) enhanced integrin‐mediated cell adhesion activity compared with their linear peptides. The results indicated that cell adhesion activity of the integrin α2β1‐binding EF peptides is conformation dependent and that the loop structure is critical for their activity. This suggests that conformation of the loop regions plays an important role for the activities of the LG modules.
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DOI:
10.1002/chem.201702117
发表时间:
2017-09-18
期刊:
Chemistry (Weinheim an der Bergstrasse, Germany)
影响因子:
--
作者:
Rhodes CA;Pei D
通讯作者:
Pei D
影响因子:
3.4
作者:
Rathore, Nitin;Gellman, Samuel H.;de Pablo, Juan J.
通讯作者:
de Pablo, Juan J.
影响因子:
2.9
作者:
Fumihiko Katagiri;Toshihiro Hara;Yuji Yamada;S. Urushibata;K. Hozumi;Y. Kikkawa;M. Nomizu
通讯作者:
M. Nomizu
DOI:
10.1074/jbc.m101420200
发表时间:
2001
期刊:
The Journal of Biological Chemistry
影响因子:
--
作者:
A. Utani;M. Nomizu;H. Matsuura;Kozue Kato;Takashi Kobayashi;Ushio Takeda;S. Aota;P. K. Nielsen;H. Shinkai
通讯作者:
H. Shinkai
影响因子:
6.9
作者:
Timpl, R;Tisi, D;Hohenester, E
通讯作者:
Hohenester, E