The tertiary fold of the epsilon subunit of the Escherichia coli F1F0 ATPsynthase (ECF1F0) has been determined by two- and three-dimensional heteronuclear (13C, 15N) NMR spectroscopy. The epsilon subunit exhibits a distinct two domain structure, with the N-terminal 84 residues of the protein forming a 10-stranded beta-structure, and with the C-terminal 48 amino acids arranged as two alpha-helices running antiparallel to one another (two helix hairpin). The beta-domain folds as a beta-sandwich with a hydrophobic interior between the two layers of the sandwich. The C-terminal two-helix hairpin folds back to the N-terminal domain and interacts with one side of the beta-domain. The arrangement of the epsilon subunit in the intact F1F0 ATP synthase involves interaction of the two helix hairpin with the F1 part, and binding of the open side of the beta-sandwich to the c subunits of the membrane-embedded F0 part.
Structure analysis of membrane-reconstituted subunit c-ring of E. coli H+-ATP synthase by solid-state NMR.
Structure analysis of membrane-reconstituted subunit c-ring of E. coli H+-ATP synthase by solid-state NMR.
Structure analysis of membrane-reconstituted subunit c-ring of E. coli H+-ATP synthase by solid-state NMR.
J Biomol NMR. 2010 Sep;48(1):1-11
Authors: Todokoro Y, Kobayashi M, Sato T, Kawakami T, Yumen I, Aimoto S, Fujiwara T, Akutsu H
The subunit c-ring of H(+)-ATP synthase (F(o) c-ring) plays an essential role in the proton translocation across a membrane driven by the electrochemical potential. To understand its structure and function, we...
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[NMR paper] Structural characterization of the interaction of the delta and alpha subunits of the Escherichia coli F1F0-ATP synthase by NMR spectroscopy.
Structural characterization of the interaction of the delta and alpha subunits of the Escherichia coli F1F0-ATP synthase by NMR spectroscopy.
Related Articles Structural characterization of the interaction of the delta and alpha subunits of the Escherichia coli F1F0-ATP synthase by NMR spectroscopy.
Biochemistry. 2005 Sep 6;44(35):11786-94
Authors: Wilkens S, Borchardt D, Weber J, Senior AE
A critical point of interaction between F(1) and F(0) in the bacterial F(1)F(0)-ATP synthase is formed by the alpha and delta subunits. Previous work has...
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[NMR paper] Subunit A of the E. coli ATP synthase: reconstitution and high resolution NMR with pr
Subunit A of the E. coli ATP synthase: reconstitution and high resolution NMR with protein purified in a mixed polarity solvent.
Related Articles Subunit A of the E. coli ATP synthase: reconstitution and high resolution NMR with protein purified in a mixed polarity solvent.
FEBS Lett. 2004 Jan 2;556(1-3):35-8
Authors: Dmitriev OY, Altendorf K, Fillingame RH
Subunit a of the Escherichia coli ATP synthase, a 30 kDa integral membrane protein, was purified to homogeneity by a novel procedure incorporating selective extraction into a monophasic...
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[NMR paper] Elucidation of the epsilon-theta subunit interface of Escherichia coli DNA polymerase
Elucidation of the epsilon-theta subunit interface of Escherichia coli DNA polymerase III by NMR spectroscopy.
Related Articles Elucidation of the epsilon-theta subunit interface of Escherichia coli DNA polymerase III by NMR spectroscopy.
Biochemistry. 2003 Apr 8;42(13):3635-44
Authors: DeRose EF, Darden T, Harvey S, Gabel S, Perrino FW, Schaaper RM, London RE
The DNA polymerase III holoenzyme (HE) is the primary replicative polymerase of Escherichia coli. The epsilon (epsilon) subunit of HE provides the 3'-->5' exonucleolytic proofreading...
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[NMR paper] Structural features of the binding site for ribosomal protein S8 in Escherichia coli
Structural features of the binding site for ribosomal protein S8 in Escherichia coli 16S rRNA defined using NMR spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-custom-pnas_full_free.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Structural features of the binding site for ribosomal protein S8 in Escherichia coli 16S rRNA defined using NMR spectroscopy.
Proc Natl Acad Sci U S A. 1997 Mar 18;94(6):2139-44
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[NMR paper] Structural features of the binding site for ribosomal protein S8 in Escherichia coli
Structural features of the binding site for ribosomal protein S8 in Escherichia coli 16S rRNA defined using NMR spectroscopy.
http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--highwire.stanford.edu-icons-externalservices-pubmed-custom-pnas_full_free.gif http://www.ncbi.nlm.nih.gov/corehtml/query/egifs/http:--www.pubmedcentral.nih.gov-corehtml-pmc-pmcgifs-pubmed-pmc.gif Related Articles Structural features of the binding site for ribosomal protein S8 in Escherichia coli 16S rRNA defined using NMR spectroscopy.
Proc Natl Acad Sci U S A. 1997 Mar 18;94(6):2139-44
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[NMR paper] Proton NMR of Escherichia coli sulfite reductase: studies of the heme protein subunit
Proton NMR of Escherichia coli sulfite reductase: studies of the heme protein subunit with added ligands.
Related Articles Proton NMR of Escherichia coli sulfite reductase: studies of the heme protein subunit with added ligands.
Biochemistry. 1993 Aug 31;32(34):8782-91
Authors: Kaufman J, Siegel LM, Spicer LD
The heme protein subunit of sulfite reductase (SiR-HP; M(r) 64,000) from Escherichia coli as isolated contains the isobacteriochlorin siroheme exchange-coupled to a cluster in the 2+ oxidation state. SiR-HP in the presence of a suitable...
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[NMR paper] Proton NMR of Escherichia coli sulfite reductase: the unligated hemeprotein subunit.
Proton NMR of Escherichia coli sulfite reductase: the unligated hemeprotein subunit.
Related Articles Proton NMR of Escherichia coli sulfite reductase: the unligated hemeprotein subunit.
Biochemistry. 1993 Mar 23;32(11):2853-67
Authors: Kaufman J, Spicer LD, Siegel LM
The isolated hemeprotein subunit of sulfite reductase (SiR-HP) from Escherichia coli consists of a high spin ferric isobacteriochlorin (siroheme) coupled to a diamagnetic 2+ cluster. When supplied with an artificial electron donor, such as methyl viologen cation radical, SiR-HP...