1tm6

From Proteopedia

Jump to: navigation, search

NMR Structure of the Free Zinc Binding C-terminal Domain of SecA

Structural highlights

1tm6 is a 1 chain structure with sequence from Escherichia coli. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:Solution NMR
Ligands:ZN
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

SECA_ECOLI Required for protein export, interacts with the SecYEG preprotein conducting channel. SecA has a central role in coupling the hydrolysis of ATP to the transfer of proteins into and across the cell membrane, serving both as a receptor for the preprotein-SecB complex and as an ATP-driven molecular motor driving the stepwise translocation of polypeptide chains across the membrane.[1]

Publication Abstract from PubMed

SecA is an integral component of the prokaryotic Sec preprotein secretory translocase system. We report here the solution NMR structure of a fragment corresponding to the C-terminal domain of Escherichia coli SecA. In the presence of Zn2+, the fragment adopts a shortened version of the classic betabetaalpha zinc finger fold. The isolated C-terminal domain shows substantial differences from the X-ray structure of a homologous SecA domain bound to the chaperone-like cofactor SecB. The differences between the structures of the free and bound forms suggest that binding to SecB causes a perturbation of the C-terminal domain's intrinsically favored betabetaalpha fold.

NMR structure of the C-terminal domain of SecA in the free state.,Matousek WM, Alexandrescu AT Biochim Biophys Acta. 2004 Nov 1;1702(2):163-71. PMID:15488768[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

Loading citation details..
Citations
reviews cite this structure
-1 more
other articles
No citations found

See Also

References

  1. ↑ Froderberg L, Houben EN, Baars L, Luirink J, de Gier JW. Targeting and translocation of two lipoproteins in Escherichia coli via the SRP/Sec/YidC pathway. J Biol Chem. 2004 Jul 23;279(30):31026-32. Epub 2004 May 12. PMID:15140892 doi:10.1074/jbc.M403229200
  2. ↑ Matousek WM, Alexandrescu AT. NMR structure of the C-terminal domain of SecA in the free state. Biochim Biophys Acta. 2004 Nov 1;1702(2):163-71. PMID:15488768 doi:S1570-9639(04)00216-X

Contents


PDB ID 1tm6

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://proteopedia.org/wiki/index.php/1tm6"
Personal tools