1fkk: Difference between revisions

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New page: left|200px<br /><applet load="1fkk" size="450" color="white" frame="true" align="right" spinBox="true" caption="1fkk, resolution 2.2Å" /> '''ATOMIC STRUCTURE OF F...
 
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[[Image:1fkk.gif|left|200px]]<br /><applet load="1fkk" size="450" color="white" frame="true" align="right" spinBox="true"
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'''ATOMIC STRUCTURE OF FKBP12, AN IMMUNOPHILIN BINDING PROTEIN'''<br />


==Overview==
==ATOMIC STRUCTURE OF FKBP12, AN IMMUNOPHILIN BINDING PROTEIN==
FK506 (tacrolimus) is a natural product now approved in the US and Japan, for organ transplantation. FK506, in complex with its 12 kDa cytosolic, receptor (FKBP12), is a potent agonist of immunosuppression through the, inhibition of the phosphatase activity of calcineurin. Rapamycin, (sirolimus), which is itself an immunosuppressant by a different, mechanism, completes with FK506 for binding to FKBP12 and thereby acts as, an antagonist of calcineurin inhibition. We have solved the X-ray, structure of unliganded FKBP12 and of FKBP12 in complex with FK506 and, with rapamycin; these structures show localized differences in, conformation and mobility in those regions of the protein that are known, by site-directed mutagenesis, to be involved in calcineurin inhibition. A, comparison of 16 additional X-ray structures of FKBP12 in complex with, FKBP12-binding ligands, where those structures were determined from, different crystal forms with distinct packing arrangements, lends, significance to the observed structural variability and suggests that it, represents an intrinsic functional characteristic of the protein. Similar, differences have been observed for FKBP12 before, but were considered, artifacts of crystal-packing interactions. We suggest that, immunosuppressive ligands express their differential effects in part by, modulating the conformation of FKBP12, in agreement with mutagenesis, experiments on the protein, and not simply through differences in the, ligand structures themselves.
<StructureSection load='1fkk' size='340' side='right'caption='[[1fkk]], [[Resolution|resolution]] 2.20&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1fkk]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1FKK OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1FKK FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.2&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=1fkk FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1fkk OCA], [https://pdbe.org/1fkk PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1fkk RCSB], [https://www.ebi.ac.uk/pdbsum/1fkk PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1fkk ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/FKB1A_BOVIN FKB1A_BOVIN] Keeps in an inactive conformation TGFBR1, the TGF-beta type I serine/threonine kinase receptor, preventing TGF-beta receptor activation in absence of ligand. May modulate the RYR1 calcium channel activity. PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides.
== 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/fk/1fkk_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=1fkk ConSurf].
<div style="clear:both"></div>


==About this Structure==
==See Also==
1FKK is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] with SO4 as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Peptidylprolyl_isomerase Peptidylprolyl isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.2.1.8 5.2.1.8] Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1FKK OCA].
*[[FKBP 3D structures|FKBP 3D structures]]
 
__TOC__
==Reference==
</StructureSection>
Comparative X-ray structures of the major binding protein for the immunosuppressant FK506 (tacrolimus) in unliganded form and in complex with FK506 and rapamycin., Wilson KP, Yamashita MM, Sintchak MD, Rotstein SH, Murcko MA, Boger J, Thomson JA, Fitzgibbon MJ, Black JR, Navia MA, Acta Crystallogr D Biol Crystallogr. 1995 Jul 1;51(Pt 4):511-21. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=15299838 15299838]
[[Category: Bos taurus]]
[[Category: Bos taurus]]
[[Category: Peptidylprolyl isomerase]]
[[Category: Large Structures]]
[[Category: Single protein]]
[[Category: Navia MA]]
[[Category: Navia, M.A.]]
[[Category: Sintchak MD]]
[[Category: Sintchak, M.D.]]
[[Category: Thomson JA]]
[[Category: Thomson, J.A.]]
[[Category: Wilson KP]]
[[Category: Wilson, K.P.]]
[[Category: SO4]]
[[Category: cis-trans prolyl-isomerase]]
[[Category: fk506 binding protein]]
[[Category: fkbp12]]
 
''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Tue Nov 20 15:00:18 2007''

Latest revision as of 10:15, 7 February 2024

ATOMIC STRUCTURE OF FKBP12, AN IMMUNOPHILIN BINDING PROTEINATOMIC STRUCTURE OF FKBP12, AN IMMUNOPHILIN BINDING PROTEIN

Structural highlights

1fkk is a 1 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.2Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

FKB1A_BOVIN Keeps in an inactive conformation TGFBR1, the TGF-beta type I serine/threonine kinase receptor, preventing TGF-beta receptor activation in absence of ligand. May modulate the RYR1 calcium channel activity. PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides.

Evolutionary Conservation

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

See Also

1fkk, resolution 2.20Å

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