2fs1: Difference between revisions
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< | ==solution structure of PSD-1== | ||
<StructureSection load='2fs1' size='340' side='right'caption='[[2fs1]]' scene=''> | |||
You may | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2fs1]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Finegoldia_magna_ATCC_29328 Finegoldia magna ATCC 29328], [https://en.wikipedia.org/wiki/Streptococcus_canis Streptococcus canis], [https://en.wikipedia.org/wiki/Streptococcus_dysgalactiae Streptococcus dysgalactiae], [https://en.wikipedia.org/wiki/Streptococcus_equi Streptococcus equi] and [https://en.wikipedia.org/wiki/Streptococcus_sp. Streptococcus sp.]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FS1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FS1 FirstGlance]. <br> | |||
or | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr> | ||
- | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2fs1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fs1 OCA], [https://pdbe.org/2fs1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fs1 RCSB], [https://www.ebi.ac.uk/pdbsum/2fs1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fs1 ProSAT]</span></td></tr> | ||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q51918_FINMA Q51918_FINMA] | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/fs/2fs1_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2fs1 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Protein G-related albumin-binding (GA) modules are frequently expressed on the surfaces of bacterial cells. The limited amino acid sequence variation among GA modules results in structural and functional differences with possible implications for bacterial pathogenesis and host specificity. In particular, the streptococcal G148-GA3 and F. magna ALB8-GA albumin-binding domains exhibit a degree of structural and dynamic diversity that may account for their varied affinities for different species of albumin. To explore the impact of GA module polymorphisms on albumin binding and specificity, we recently used offset recombinant PCR to shuffle seven artificially constructed representatives of the GA sequence space and scan the phage-displayed recombinant domains for mutations that supported binding to the phylogenetically distinct human and guinea pig serum albumins (HSA and GPSA) (Rozak et al. (2006) Biochemistry 45, 3263-3271). Surprisingly, phage selection revealed an overwhelming preference for a single recombinant domain (PSD-1, phage-selected domain-1) regardless of whether the phages were enriched for their abilities to bind one or both of these albumins. We describe here the NMR-derived structure, dynamics, and stability of unbound PSD-1. Our results demonstrate that increased flexibility is not a requirement for broadened specificity, as had been suggested earlier (Johansson et al. (2002) J. Mol. Biol. 316, 1083-1099), because PSD-1 binds the phylogenetically diverse HSA and GPSA even more tightly than G148-GA3 but is less flexible. The structural basis for albumin-binding specificity is analyzed in light of these new results. | |||
Structure, dynamics, and stability variation in bacterial albumin binding modules: implications for species specificity.,He Y, Rozak DA, Sari N, Chen Y, Bryan P, Orban J Biochemistry. 2006 Aug 22;45(33):10102-9. PMID:16906768<ref>PMID:16906768</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2fs1" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Finegoldia magna ATCC 29328]] | ||
[[Category: Large Structures]] | |||
[[Category: Streptococcus canis]] | |||
== | [[Category: Streptococcus dysgalactiae]] | ||
< | [[Category: Streptococcus equi]] | ||
[[Category: | [[Category: Streptococcus sp]] | ||
[[Category: | [[Category: Bryan P]] | ||
[[Category: | [[Category: Chen Y]] | ||
[[Category: | [[Category: He Y]] | ||
[[Category: | [[Category: Orban J]] | ||
[[Category: | [[Category: Rozak DA]] | ||
[[Category: | [[Category: Sari N]] | ||
[[Category: | |||
[[Category: | |||
Latest revision as of 21:57, 29 May 2024
solution structure of PSD-1solution structure of PSD-1
Structural highlights
FunctionEvolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedProtein G-related albumin-binding (GA) modules are frequently expressed on the surfaces of bacterial cells. The limited amino acid sequence variation among GA modules results in structural and functional differences with possible implications for bacterial pathogenesis and host specificity. In particular, the streptococcal G148-GA3 and F. magna ALB8-GA albumin-binding domains exhibit a degree of structural and dynamic diversity that may account for their varied affinities for different species of albumin. To explore the impact of GA module polymorphisms on albumin binding and specificity, we recently used offset recombinant PCR to shuffle seven artificially constructed representatives of the GA sequence space and scan the phage-displayed recombinant domains for mutations that supported binding to the phylogenetically distinct human and guinea pig serum albumins (HSA and GPSA) (Rozak et al. (2006) Biochemistry 45, 3263-3271). Surprisingly, phage selection revealed an overwhelming preference for a single recombinant domain (PSD-1, phage-selected domain-1) regardless of whether the phages were enriched for their abilities to bind one or both of these albumins. We describe here the NMR-derived structure, dynamics, and stability of unbound PSD-1. Our results demonstrate that increased flexibility is not a requirement for broadened specificity, as had been suggested earlier (Johansson et al. (2002) J. Mol. Biol. 316, 1083-1099), because PSD-1 binds the phylogenetically diverse HSA and GPSA even more tightly than G148-GA3 but is less flexible. The structural basis for albumin-binding specificity is analyzed in light of these new results. Structure, dynamics, and stability variation in bacterial albumin binding modules: implications for species specificity.,He Y, Rozak DA, Sari N, Chen Y, Bryan P, Orban J Biochemistry. 2006 Aug 22;45(33):10102-9. PMID:16906768[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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