2bdu

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[[Image:2bdu.jpg|left|200px]]
[[Image:2bdu.jpg|left|200px]]
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{{Structure
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<!--
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|PDB= 2bdu |SIZE=350|CAPTION= <scene name='initialview01'>2bdu</scene>, resolution 2.350&Aring;
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The line below this paragraph, containing "STRUCTURE_2bdu", creates the "Structure Box" on the page.
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|SITE=
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You may change the PDB parameter (which sets the PDB file loaded into the applet)
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|LIGAND= <scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>
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or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
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|ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/5'-nucleotidase 5'-nucleotidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.3.5 3.1.3.5] </span>
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or leave the SCENE parameter empty for the default display.
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|GENE= Nt5c3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 Mus musculus])
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|DOMAIN=<span class='plainlinks'>[http://www.ncbi.nlm.nih.gov/Structure/cdd/cddsrv.cgi?uid=COG4359 COG4359], [http://www.ncbi.nlm.nih.gov/Structure/cdd/cddsrv.cgi?uid=pfam05822 UMPH-1]</span>
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{{STRUCTURE_2bdu| PDB=2bdu | SCENE= }}
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|RELATEDENTRY=
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2bdu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2bdu OCA], [http://www.ebi.ac.uk/pdbsum/2bdu PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2bdu RCSB]</span>
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}}
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'''X-Ray Structure of a Cytosolic 5'-Nucleotidase III from Mus Musculus MM.158936'''
'''X-Ray Structure of a Cytosolic 5'-Nucleotidase III from Mus Musculus MM.158936'''
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[[Category: Jr., G N.Phillips.]]
[[Category: Jr., G N.Phillips.]]
[[Category: Wesenberg, G E.]]
[[Category: Wesenberg, G E.]]
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[[Category: aah38029]]
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[[Category: Aah38029]]
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[[Category: bc038029]]
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[[Category: Bc038029]]
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[[Category: center for eukaryotic structural genomic]]
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[[Category: Center for eukaryotic structural genomic]]
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[[Category: cesg]]
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[[Category: Cesg]]
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[[Category: cytosolic 5'-nucleotidase iii]]
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[[Category: Cytosolic 5'-nucleotidase iii]]
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[[Category: mm 158936]]
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[[Category: Mm 158936]]
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[[Category: nt5c3 protein]]
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[[Category: Nt5c3 protein]]
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[[Category: protein structure initiative]]
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[[Category: Protein structure initiative]]
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[[Category: psi]]
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[[Category: Psi]]
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[[Category: structural genomic]]
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[[Category: Structural genomic]]
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[[Category: umph-1]]
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[[Category: Umph-1]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 20:09:18 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 02:05:03 2008''
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Revision as of 17:09, 3 May 2008

Image:2bdu.jpg

Template:STRUCTURE 2bdu

X-Ray Structure of a Cytosolic 5'-Nucleotidase III from Mus Musculus MM.158936


Overview

Eukaryotic pyrimidine 5'-nucleotidase type 1 (P5N-1) catalyzes dephosphorylation of pyrimidine 5'-mononucleotides. Deficiency of P5N-1 activity in red blood cells results in nonspherocytic hemolytic anemia. The enzyme deficiency is either familial or can be acquired through lead poisoning. We present the crystal structure of mouse P5N-1 refined to 2.35 A resolution. The mouse P5N-1 has a 92% sequence identity to its human counterpart. The structure revealed that P5N-1 adopts a fold similar to enzymes of the haloacid dehydrogenase superfamily. The active site of this enzyme is structurally highly similar to those of phosphoserine phosphatases. We propose a catalytic mechanism for P5N-1 that is also similar to that of phosphoserine phosphatases and provide experimental evidence for the mechanism in the form of structures of several reaction cycle states, including: 1) P5N-1 with bound Mg(II) at 2.25 A, 2) phosphoenzyme intermediate analog at 2.30 A, 3) product-transition complex analog at 2.35 A, and 4) product complex at 2.1A resolution with phosphate bound in the active site. Furthermore the structure of Pb(II)-inhibited P5N-1 (at 2.35 A) revealed that Pb(II) binds within the active site in a way that compromises function of the cationic cavity, which is required for the recognition and binding of the phosphate group of nucleotides.

About this Structure

2BDU is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.

Reference

Structure of pyrimidine 5'-nucleotidase type 1. Insight into mechanism of action and inhibition during lead poisoning., Bitto E, Bingman CA, Wesenberg GE, McCoy JG, Phillips GN Jr, J Biol Chem. 2006 Jul 21;281(29):20521-9. Epub 2006 May 3. PMID:16672222 Page seeded by OCA on Sat May 3 20:09:18 2008

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