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.

5aes

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 02:04, 11 March 2017

Crystal Structure of murine Chronophin (Pyridoxal Phosphate Phosphatase) in Complex with a PNP-derived Inhibitor

Structural highlights

5aes is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, ,
Activity:	Pyridoxal phosphatase, with EC number 3.1.3.74
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[PLPP_MOUSE] Protein serine phosphatase that dephosphorylates 'Ser-3' in cofilin and probably also dephosphorylates phospho-serine residues in DSTN. Regulates cofilin-dependent actin cytoskeleton reorganization. Required for normal progress through mitosis and normal cytokinesis. Does not dephosphorylate phospho-threonines in LIMK1. Does not dephosphorylate peptides containing phospho-tyrosine. Pyridoxal phosphate phosphatase. Has some activity towards pyridoxal 5'-phosphate (PLP), pyridoxine 5'-phosphate (PMP) and pyridoxine 5'-phosphate (PNP), with a highest activity with PLP followed by PNP (By similarity).

Publication Abstract from PubMed

A set of phosphonic acid derivatives (1-4) of pyridoxal 5'-phosphate (PLP) was synthesized and characterized biochemically using purified murine pyridoxal phosphatase (PDXP), also known as chronophin. The most promising compound 1 displayed primarily competitive PDXP inhibitory activity with an IC50 value of 79muM, which was in the range of the Km of the physiological substrate PLP. We also report the X-ray crystal structure of PDXP bound to compound 3, which we solved to 2.75A resolution (PDB code 5AES). The co-crystal structure proves that compound 3 binds in the same orientation as PLP, and confirms the mode of inhibition to be competitive. Thus, we identify compound 1 as a PDXP phosphatase inhibitor. Our results suggest a strategy to design new, potent and selective PDXP inhibitors, which may be useful to increase the sensitivity of tumor cells to treatment with cytotoxic agents.

Synthesis of hydrolysis-resistant pyridoxal 5'-phosphate analogs and their biochemical and X-ray crystallographic characterization with the pyridoxal phosphatase chronophin.,Knobloch G, Jabari N, Stadlbauer S, Schindelin H, Kohn M, Gohla A Bioorg Med Chem. 2015 Mar 4. pii: S0968-0896(15)00153-4. doi:, 10.1016/j.bmc.2015.02.049. PMID:25783190^[1]

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

References

↑ Knobloch G, Jabari N, Stadlbauer S, Schindelin H, Kohn M, Gohla A. Synthesis of hydrolysis-resistant pyridoxal 5'-phosphate analogs and their biochemical and X-ray crystallographic characterization with the pyridoxal phosphatase chronophin. Bioorg Med Chem. 2015 Mar 4. pii: S0968-0896(15)00153-4. doi:, 10.1016/j.bmc.2015.02.049. PMID:25783190 doi:http://dx.doi.org/10.1016/j.bmc.2015.02.049

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/5aes"

@@ Line 1: / Line 1: @@
 ==Crystal Structure of murine Chronophin (Pyridoxal Phosphate Phosphatase) in Complex with a PNP-derived Inhibitor==
 <StructureSection load='5aes' size='340' side='right' caption='[[5aes]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=5B0:{2-[5-HYDROXY-4-(HYDROXYMETHYL)-6-METHYLPYRIDIN-3-YL]ETHYL}PHOSPHONIC+ACID'>5B0</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pyridoxal_phosphatase Pyridoxal phosphatase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.74 3.1.3.74] </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=5aes FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5aes OCA], [http://www.rcsb.org/pdb/explore.do?structureId=5aes RCSB], [http://www.ebi.ac.uk/pdbsum/5aes 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=5aes FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5aes OCA], [http://pdbe.org/5aes PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5aes RCSB], [http://www.ebi.ac.uk/pdbsum/5aes PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5aes 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 5aes" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

5aes

From Proteopedia

Revision as of 02:04, 11 March 2017

Crystal Structure of murine Chronophin (Pyridoxal Phosphate Phosphatase) in Complex with a PNP-derived Inhibitor

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox