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 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]).

Literatur

See the NCBI webpage on Halobacteria
Voet, Judith G.; Voet, Donald (2004). Biochemistry. New York: J. Wiley & Sons. ISBN 0-471-19350-X.
name="urlBacteriorhodopsin: Pumping Ions">"Bacteriorhodopsin: Pumping Ions".
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.
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.
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

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[1] See the NCBI webpage on Halobacteria

[isbn0-471-19350-X-2] Voet, Judith G.; Voet, Donald (2004). Biochemistry. New York: J. Wiley & Sons. ISBN 0-471-19350-X.

[3] ="urlBacteriorhodopsin: Pumping Ions">"Bacteriorhodopsin: Pumping Ions".

[PDB1X0S-4] 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.

[Nishikawa05-5] 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.

[RasTop-6] Image created with RasTop (Molecular Visualization Software).