Molecular dynamics study on the stability of peptide nanotubes placed in POPC phospholipid bilayer

  • سال انتشار: 1397
  • محل انتشار: بیستمین کنگره ملی و هشتمین کنگره بین‌المللی زیست‌شناسی ایران
  • کد COI اختصاصی: BIOCONF20_328
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 332
دانلود فایل این مقاله

نویسندگان

Majid Taghdir

Department of Biophysics, Faculty of biological science, University of Tarbiat Modares

Mina Bolorizadeh

Department of Biophysics, Faculty of biological science, University of Tarbiat Modares

Farzane Abasi Juzdani

Department of Biophysics, Faculty of biological science, University of Tarbiat Modares

چکیده

The self-assembly and stacking of cyclic peptides form cyclic peptide nanotubes (CPNT). These nanotubes are able to transfer many substances such as drugs through the cell membrane. For this reason, they must maintain a stable structure in the phospholipid bilayer. Up to now the transfer of different molecules such as water, ions, glucose, glutamic acid, 5FU anticancer drug and so on through peptide nanotubes have been investigated theoretically and experimentally. In this study structure and stability of CPNT [(D-Ala-Glu-D-Ala-Gln)3] placed in POPC(1-Palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine) bilayer, is analyzed after 40ns molecular dynamic simulation. This nanotube has been previously synthesized experimentally. This analysis indicates the role of the nonbonded interaction between the side and main chains of cyclic peptide rings and their phospholipid environment, besides the role of non-bonded electrostatic interactions between neighboring cyclic peptide rings in CPNT’s stability. In addition, the number of rings placed in the lipid bilayer along with their arrangement so that similar charges wouldn’t sit on top of each other effect CPNT’s stability. The result of this study can help further experimental investigations in this field

کلیدواژه ها

Cyclic peptide nanotube, POPC membrane, Molecular dynamic simulation

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.