5duo

Structural highlights

Function

TSPO_CERSP May play a role in the transmembrane transport of tetrapyrroles and similar compounds, and thereby contribute to the regulation of tetrapyrrole biosynthesis (PubMed:10409680). Binds tetrapyrroles and promotes the photooxidative degradation of protoporphyrin IX (PubMed:23651039). Binds protoporphyrin IX, hemin, and coproporphyrin III, but does not bind delta-aminolevulinic acid (PubMed:23952237, PubMed:20541505, PubMed:25635101). Can bind bilirubin, curcumin, gossypol, retinoic acid, cholesterol and the benzodiazepine receptor agonist PK-11195 (in vitro) (PubMed:23952237, PubMed:25635101). Plays a role in the response to low oxygen levels and in the regulation of the biosynthesis of photosynthetic pigments (PubMed:7673149, PubMed:10409680, PubMed:10681549).^{[1] [2] [3] [4] [5] [6] [7]}

References

1. ↑ Yeliseev AA, Kaplan S. TspO of rhodobacter sphaeroides. A structural and functional model for the mammalian peripheral benzodiazepine receptor. J Biol Chem. 2000 Feb 25;275(8):5657-67. PMID:10681549
2. ↑ Korkhov VM, Sachse C, Short JM, Tate CG. Three-dimensional structure of TspO by electron cryomicroscopy of helical crystals. Structure. 2010 Jun 9;18(6):677-87. doi: 10.1016/j.str.2010.03.001. PMID:20541505 doi:http://dx.doi.org/10.1016/j.str.2010.03.001
3. ↑ Ginter C, Kiburu I, Boudker O. Chemical catalysis by the translocator protein (18 kDa). Biochemistry. 2013 May 28;52(21):3609-11. doi: 10.1021/bi400364z. Epub 2013 May, 13. PMID:23651039 doi:http://dx.doi.org/10.1021/bi400364z
4. ↑ Li F, Xia Y, Meiler J, Ferguson-Miller S. Characterization and modeling of the oligomeric state and ligand binding behavior of purified translocator protein 18 kDa from Rhodobacter sphaeroides. Biochemistry. 2013 Aug 27;52(34):5884-99. doi: 10.1021/bi400431t. Epub 2013 Aug, 16. PMID:23952237 doi:http://dx.doi.org/10.1021/bi400431t
5. ↑ Li F, Liu J, Zheng Y, Garavito RM, Ferguson-Miller S. Protein structure. Crystal structures of translocator protein (TSPO) and mutant mimic of a human polymorphism. Science. 2015 Jan 30;347(6221):555-8. doi: 10.1126/science.1260590. PMID:25635101 doi:http://dx.doi.org/10.1126/science.1260590
6. ↑ Yeliseev AA, Kaplan S. A sensory transducer homologous to the mammalian peripheral-type benzodiazepine receptor regulates photosynthetic membrane complex formation in Rhodobacter sphaeroides 2.4.1. J Biol Chem. 1995 Sep 8;270(36):21167-75. PMID:7673149
7. ↑ Yeliseev AA, Kaplan S. A novel mechanism for the regulation of photosynthesis gene expression by the TspO outer membrane protein of Rhodobacter sphaeroides 2.4.1. J Biol Chem. 1999 Jul 23;274(30):21234-43. PMID:10409680