Literature DB >> 17119155

The Amt/MEP/Rh family: structure of AmtB and the mechanism of ammonia gas conduction.

Shahram Khademi1, Robert M Stroud.   

Abstract

The atomic structures of the first members of the Amt/MEP/Rh family show that they are 11-crossing membrane proteins that form trimers in the membrane. Each monomer supports a hydrophobic channel that conducts NH(3) but not any water or ions. The reprotonation of NH(3) on the receiving side raises the pH on that side in the absence of metabolism of NH(3), and there is no transfer of protons through the protein.

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Year:  2006        PMID: 17119155     DOI: 10.1152/physiol.00051.2005

Source DB:  PubMed          Journal:  Physiology (Bethesda)        ISSN: 1548-9221


  26 in total

Review 1.  Molecular physiology of the Rh ammonia transport proteins.

Authors:  I David Weiner; Jill W Verlander
Journal:  Curr Opin Nephrol Hypertens       Date:  2010-09       Impact factor: 2.894

Review 2.  Structures of membrane proteins.

Authors:  Kutti R Vinothkumar; Richard Henderson
Journal:  Q Rev Biophys       Date:  2010-02       Impact factor: 5.318

3.  Ammonium ion transport by the AMT/Rh homolog TaAMT1;1 is stimulated by acidic pH.

Authors:  Rikke Søgaard; Magnus Alsterfjord; Nanna Macaulay; Thomas Zeuthen
Journal:  Pflugers Arch       Date:  2009-04-02       Impact factor: 3.657

4.  Movement of NH₃ through the human urea transporter B: a new gas channel.

Authors:  R Ryan Geyer; Raif Musa-Aziz; Giray Enkavi; P Mahinthichaichan; Emad Tajkhorshid; Walter F Boron
Journal:  Am J Physiol Renal Physiol       Date:  2013-04-03

5.  Cloning and characterization of a zebrafish homologue of human AQP1: a bifunctional water and gas channel.

Authors:  Li-Ming Chen; Jinhua Zhao; Raif Musa-Aziz; Marc F Pelletier; Iain A Drummond; Walter F Boron
Journal:  Am J Physiol Regul Integr Comp Physiol       Date:  2010-08-25       Impact factor: 3.619

Review 6.  The Rh protein family: gene evolution, membrane biology, and disease association.

Authors:  Cheng-Han Huang; Mao Ye
Journal:  Cell Mol Life Sci       Date:  2009-12-02       Impact factor: 9.261

7.  Ammonia-induced formation of an AmtB-GlnK complex is not sufficient for nitrogenase regulation in the photosynthetic bacterium Rhodobacter capsulatus.

Authors:  Pier-Luc Tremblay; Patrick C Hallenbeck
Journal:  J Bacteriol       Date:  2007-12-21       Impact factor: 3.490

8.  Regulation of ammonia homeostasis by the ammonium transporter AmtA in Dictyostelium discoideum.

Authors:  Ryuji Yoshino; Takahiro Morio; Yoko Yamada; Hidekazu Kuwayama; Masazumi Sameshima; Yoshimasa Tanaka; Hiromi Sesaki; Miho Iijima
Journal:  Eukaryot Cell       Date:  2007-10-19

9.  Relative CO2/NH3 selectivities of AQP1, AQP4, AQP5, AmtB, and RhAG.

Authors:  Raif Musa-Aziz; Li-Ming Chen; Marc F Pelletier; Walter F Boron
Journal:  Proc Natl Acad Sci U S A       Date:  2009-03-09       Impact factor: 11.205

10.  Functional role of Asp160 and the deprotonation mechanism of ammonium in the Escherichia coli ammonia channel protein AmtB.

Authors:  Yuchun Lin; Zexing Cao; Yirong Mo
Journal:  J Phys Chem B       Date:  2009-04-09       Impact factor: 2.991

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