5iqm

From Proteopedia

(Difference between revisions)

Revision as of 07:28, 3 June 2020

Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N

Structural highlights

5iqm is a 4 chain structure with sequence from Ecoli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Gene:	fimG, b4319, JW4282 (ECOLI)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[FIMG_ECOLI] Involved in regulation of length and mediation of adhesion of type 1 fimbriae (but not necessary for the production of fimbriae). Involved in the integration of FimH in the fimbriae. [FIMF_ECOLI] Involved in regulation of length and mediation of adhesion of type 1 fimbriae (but not necessary for the production of fimbriae). Involved in the integration of FimH in the fimbriae.

Publication Abstract from PubMed

The complex between the bacterial type 1 pilus subunit FimG and the peptide corresponding to the N-terminal extension (termed donor strand, Ds) of the partner subunit FimF (DsF) shows the strongest reported noncovalent molecular interaction, with a dissociation constant (KD ) of 1.5x10-20 m. However, the complex only exhibits a slow association rate of 330 m-1 s-1 that limits technical applications, such as its use in affinity purification. Herein, a structure-based approach was used to design pairs of FimGt (a FimG variant lacking its own N-terminal extension) and DsF variants with enhanced electrostatic surface complementarity. Association of the best mutant FimGt/DsF pairs was accelerated by more than two orders of magnitude, while the dissociation rates and 3D structures of the improved complexes remained essentially unperturbed. A KD value of 8.8x10-22 m was obtained for the best mutant complex, which is the lowest value reported to date for a protein/ligand complex.

Accelerating the Association of the Most Stable Protein-Ligand Complex by more than Two Orders of Magnitude.,Giese C, Eras J, Kern A, Scharer MA, Capitani G, Glockshuber R Angew Chem Int Ed Engl. 2016 Jun 28. doi: 10.1002/anie.201603652. PMID:27351462^[1]

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

References

↑ Giese C, Eras J, Kern A, Scharer MA, Capitani G, Glockshuber R. Accelerating the Association of the Most Stable Protein-Ligand Complex by more than Two Orders of Magnitude. Angew Chem Int Ed Engl. 2016 Jun 28. doi: 10.1002/anie.201603652. PMID:27351462 doi:http://dx.doi.org/10.1002/anie.201603652

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5iqm"

@@ Line 1: / Line 1: @@
 ==Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N==
-<StructureSection load='5iqm' size='340' side='right' caption='[[5iqm]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
+<StructureSection load='5iqm' size='340' side='right'caption='[[5iqm]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5iqm]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5IQM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5IQM FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5iqm]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5IQM OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5IQM FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene></td></tr>
+</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CO:COBALT+(II)+ION'>CO</scene></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=5iqm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5iqm OCA], [http://pdbe.org/5iqm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5iqm RCSB], [http://www.ebi.ac.uk/pdbsum/5iqm PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5iqm ProSAT]</span></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">fimG, b4319, JW4282 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</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=5iqm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5iqm OCA], [http://pdbe.org/5iqm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5iqm RCSB], [http://www.ebi.ac.uk/pdbsum/5iqm PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5iqm ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 22: / Line 23: @@
 __TOC__
 </StructureSection>
+[[Category: Ecoli]]
+[[Category: Large Structures]]
 [[Category: Capitani, G]]
 [[Category: Eras, J]]

5iqm

From Proteopedia

Revision as of 07:28, 3 June 2020

Crystal structure of the E. coli type 1 pilus subunit FimG (engineered variant with substitution Q134E; N-terminal FimG residues 1-12 truncated) in complex with the donor strand peptide DsF_T4R-T6R-D13N

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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