Bakteriorodopsin

Bakteriorodopsin adalah protein yang digunakan oleh Archaea, terutama oleh Halobacteria, kelas dari Euryarchaeota.[1] Ini bertindak sebagai pompa proton; yaitu, menangkap energi cahaya dan menggunakannya untuk memindahkan proton melintasi membran dari sel.[2] Gradien proton yang dihasilkan selanjutnya diubah menjadi energi kimia.[3]

Galeri

  • Bacteriorhodopsin is a trimer. Red line indicates extracellular side (EC) of the membrane
    Bacteriorhodopsin is a trimer. Red line indicates extracellular side (EC) of the membrane
  • Bacteriorhodopsin single monomer with retinal molecule between 7 vertical alpha helixes (PDB ID: 1X0S[4][5][6]). One more small helix is light blue, beta sheet yellow.
    Bacteriorhodopsin single monomer with retinal molecule between 7 vertical alpha helixes (PDB ID: 1X0S[4][5][6]). One more small helix is light blue, beta sheet yellow.
  • Bacteriorhodopsin trimer with one retinal molecule in each subunit seen from the extracellular side EC (PDB ID: 1X0S [4][5][6]).
    Bacteriorhodopsin trimer with one retinal molecule in each subunit seen from the extracellular side EC (PDB ID: 1X0S [4][5][6]).

Literatur

  1. ^ See the NCBI webpage on Halobacteria
  2. ^ Voet, Judith G.; Voet, Donald (2004). Biochemistry. New York: J. Wiley & Sons. ISBN 0-471-19350-X. Pemeliharaan CS1: Banyak nama: authors list (link)
  3. ^ name="urlBacteriorhodopsin: Pumping Ions">"Bacteriorhodopsin: Pumping Ions". 
  4. ^ a b Nishikawa, T.; Murakami, M. (2005-03-28). "Crystal structure of the 13-cis isomer of bacteriorhodopsin". RCSB Protein Data Bank (PDB). doi:10.2210/pdb1x0s/pdb. PDB ID: 1X0S. Diakses tanggal 7 October 2012. 
  5. ^ a b Nishikawa, T.; Murakami, M. (2005). "Crystal structure of the 13-cis isomer of bacteriorhodopsin in the dark-adapted state". J.Mol.Biol. Elsevier. 352: 319–328. doi:10.1016/j.jmb.2005.07.021. PMID 16084526. PDB ID: 1X0S. Diakses tanggal 7 October 2012. 
  6. ^ a b Image created with RasTop (Molecular Visualization Software).

Pranala luar

  • Bacteriorhodopsin: Molecule of the Month Diarsipkan 2014-10-19 di Wayback Machine., by David Goodsell, RCSB Protein Data Bank
  • Orientasi Protein Membran UMich families/superfamily-6 - Calculated spatial positions of bacteriorhodopsin-like proteins in membrane

Templat:Pompa proton