This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2xkv

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 10:35, 4 August 2016

Atomic Model of the SRP-FtsY Early Conformation

Structural highlights

2xkv is a 4 chain structure with sequence from [1], "bacillus_coli"_migula_1895 "bacillus coli" migula 1895 and Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2j28, 2j7p, 1jpj, 1ng1, 2cnw, 2c03, 1dul, 2ng1, 1ls1, 1o87, 1ry1, 1jpn, 2j45, 2j46, 1rj9, 1ffh, 1hq1, 2ffh, 2c04, 2iyl, 1okk, 2iy3, 3ng1
Activity:	Signal-recognition-particle GTPase, with EC number 3.6.5.4
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FTSY_THEAQ] Involved in targeting and insertion of nascent membrane proteins into the cytoplasmic membrane. Acts as a receptor for the complex formed by the signal recognition particle (SRP) and the ribosome-nascent chain (RNC) (By similarity). [SRP54_THEAQ] Involved in targeting and insertion of nascent membrane proteins into the cytoplasmic membrane. Binds to the hydrophobic signal sequence of the ribosome-nascent chain (RNC) as it emerges from the ribosomes. The SRP-RNC complex is then targeted to the cytoplasmic membrane where it interacts with the SRP receptor FtsY (By similarity).[HAMAP-Rule:MF_00306] [SRP54_ECOLI] Involved in targeting and insertion of nascent membrane proteins into the cytoplasmic membrane. Binds to the hydrophobic signal sequence of the ribosome-nascent chain (RNC) as it emerges from the ribosomes. The SRP-RNC complex is then targeted to the cytoplasmic membrane where it interacts with the SRP receptor FtsY. Interaction with FtsY leads to the transfer of the RNC complex to the Sec translocase for insertion into the membrane, the hydrolysis of GTP by both Ffh and FtsY, and the dissociation of the SRP-FtsY complex into the individual components.^[1] ^[2] ^[3] ^[4] ^[5] ^[6] ^[7]

Publication Abstract from PubMed

We report the 'early' conformation of the Escherichia coli signal recognition particle (SRP) and its receptor FtsY bound to the translating ribosome, as determined by cryo-EM. FtsY binds to the tetraloop of the SRP RNA, whereas the NG domains of the SRP protein and FtsY interact weakly in this conformation. Our results suggest that optimal positioning of the SRP RNA tetraloop and the Ffh NG domain leads to FtsY recruitment.

Cryo-EM structure of the E. coli translating ribosome in complex with SRP and its receptor.,Estrozi LF, Boehringer D, Shan SO, Ban N, Schaffitzel C Nat Struct Mol Biol. 2011 Jan;18(1):88-90. Epub 2010 Dec 12. PMID:21151118^[8]

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

References

↑ Ribes V, Romisch K, Giner A, Dobberstein B, Tollervey D. E. coli 4.5S RNA is part of a ribonucleoprotein particle that has properties related to signal recognition particle. Cell. 1990 Nov 2;63(3):591-600. PMID:2171778
↑ Luirink J, High S, Wood H, Giner A, Tollervey D, Dobberstein B. Signal-sequence recognition by an Escherichia coli ribonucleoprotein complex. Nature. 1992 Oct 22;359(6397):741-3. PMID:1279430 doi:http://dx.doi.org/10.1038/359741a0
↑ Phillips GJ, Silhavy TJ. The E. coli ffh gene is necessary for viability and efficient protein export. Nature. 1992 Oct 22;359(6397):744-6. PMID:1331806 doi:http://dx.doi.org/10.1038/359744a0
↑ Powers T, Walter P. Co-translational protein targeting catalyzed by the Escherichia coli signal recognition particle and its receptor. EMBO J. 1997 Aug 15;16(16):4880-6. PMID:9305630 doi:10.1093/emboj/16.16.4880
↑ Peluso P, Shan SO, Nock S, Herschlag D, Walter P. Role of SRP RNA in the GTPase cycles of Ffh and FtsY. Biochemistry. 2001 Dec 18;40(50):15224-33. PMID:11735405
↑ Tian H, Beckwith J. Genetic screen yields mutations in genes encoding all known components of the Escherichia coli signal recognition particle pathway. J Bacteriol. 2002 Jan;184(1):111-8. PMID:11741850
↑ 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
↑ Estrozi LF, Boehringer D, Shan SO, Ban N, Schaffitzel C. Cryo-EM structure of the E. coli translating ribosome in complex with SRP and its receptor. Nat Struct Mol Biol. 2011 Jan;18(1):88-90. Epub 2010 Dec 12. PMID:21151118 doi:10.1038/nsmb.1952

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2xkv"

@@ Line 1: / Line 1: @@
 ==Atomic Model of the SRP-FtsY Early Conformation==
 <StructureSection load='2xkv' size='340' side='right' caption='[[2xkv]], [[Resolution|resolution]] 13.50&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2j28|2j28]], [[2j7p|2j7p]], [[1jpj|1jpj]], [[1ng1|1ng1]], [[2cnw|2cnw]], [[2c03|2c03]], [[1dul|1dul]], [[2ng1|2ng1]], [[1ls1|1ls1]], [[1o87|1o87]], [[1ry1|1ry1]], [[1jpn|1jpn]], [[2j45|2j45]], [[2j46|2j46]], [[1rj9|1rj9]], [[1ffh|1ffh]], [[1hq1|1hq1]], [[2ffh|2ffh]], [[2c04|2c04]], [[2iyl|2iyl]], [[1okk|1okk]], [[2iy3|2iy3]], [[3ng1|3ng1]]</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Signal-recognition-particle_GTPase Signal-recognition-particle GTPase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.5.4 3.6.5.4] </span></td></tr>
-<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2xkv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2xkv OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2xkv RCSB], [http://www.ebi.ac.uk/pdbsum/2xkv PDBsum]</span></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2xkv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2xkv OCA], [http://pdbe.org/2xkv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2xkv RCSB], [http://www.ebi.ac.uk/pdbsum/2xkv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2xkv ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2xkv" style="background-color:#fffaf0;"></div>
 ==See Also==

2xkv

From Proteopedia

Revision as of 10:35, 4 August 2016

Atomic Model of the SRP-FtsY Early Conformation

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox