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.

3ffv

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Current revision

Crystal Structure Analysis of Syd

Structural highlights

3ffv is a 2 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[SYDP_ECOLI] Interacts with the SecY protein in vivo. May bind preferentially to an uncomplexed state of SecY, thus functioning either as a chelating agent for excess SecY in the cell or as a regulatory factor that negatively controls the translocase function.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

The Syd protein has been implicated in the Sec-dependent transport of polypeptides across the bacterial inner membrane. Using Nanodiscs, we here provide direct evidence that Syd binds the SecY complex, and we demonstrate that interaction involves the two electropositive and cytosolic loops of the SecY subunit. We solve the crystal structure of Syd and together with cysteine cross-link analysis, we show that a conserved concave and electronegative groove constitutes the SecY-binding site. At the membrane, Syd decreases the activity of the translocon containing loosely associated SecY-SecE subunits, whereas in detergent solution Syd disrupts the SecYEG heterotrimeric associations. These results support the role of Syd in proofreading the SecY complex biogenesis and point to the electrostatic nature of the Sec channel interaction with its cytosolic partners.

Structure, binding, and activity of Syd, a SecY-interacting protein.,Dalal K, Nguyen N, Alami M, Tan J, Moraes TF, Lee WC, Maurus R, Sligar SS, Brayer GD, Duong F J Biol Chem. 2009 Mar 20;284(12):7897-902. Epub 2009 Jan 12. PMID:19139097^[1]

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

References

↑ Dalal K, Nguyen N, Alami M, Tan J, Moraes TF, Lee WC, Maurus R, Sligar SS, Brayer GD, Duong F. Structure, binding, and activity of Syd, a SecY-interacting protein. J Biol Chem. 2009 Mar 20;284(12):7897-902. Epub 2009 Jan 12. PMID:19139097 doi:10.1074/jbc.M808305200

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3ffv"

@@ Line 1: / Line 1: @@
 ==Crystal Structure Analysis of Syd==
-<StructureSection load='3ffv' size='340' side='right' caption='[[3ffv]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
+<StructureSection load='3ffv' size='340' side='right'caption='[[3ffv]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3ffv]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FFV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3FFV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3ffv]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3FFV OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=3FFV FirstGlance]. <br>
-</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=3ffv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ffv OCA], [http://pdbe.org/3ffv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ffv RCSB], [http://www.ebi.ac.uk/pdbsum/3ffv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3ffv ProSAT]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=3ffv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ffv OCA], [http://pdbe.org/3ffv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ffv RCSB], [http://www.ebi.ac.uk/pdbsum/3ffv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3ffv ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 32: / Line 32: @@
 </StructureSection>
 [[Category: Escherichia coli]]
+[[Category: Large Structures]]
 [[Category: Brayer, G D]]
 [[Category: Maurus, R]]

3ffv

From Proteopedia

Current revision

Crystal Structure Analysis of Syd

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox