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4osx

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Revision as of 16:26, 5 August 2016

STRUCTURE of UNCLEAVED GLYCINE-BOUND HUMAN L-ASPARAGINASE PROTEIN

Structural highlights

4osx is a 2 chain structure with sequence from Human. This structure supersedes the now removed PDB entry 4hlo. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	4osy
Gene:	ALP, ASRGL1, CRASH (HUMAN)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[ASGL1_HUMAN] Has both L-asparaginase and beta-aspartyl peptidase activity. May be involved in the production of L-aspartate, which can act as an excitatory neurotransmitter in some brain regions. Is highly active with L-Asp beta-methyl ester. Besides, has catalytic activity toward beta-aspartyl dipeptides and their methyl esters, including beta-L-Asp-L-Phe, beta-L-Asp-L-Phe methyl ester (aspartame), beta-L-Asp-L-Ala, beta-L-Asp-L-Leu and beta-L-Asp-L-Lys. Does not have aspartylglucosaminidase activity and is inactive toward GlcNAc-L-Asn. Likewise, has no activity toward glutamine.^[1]

Publication Abstract from PubMed

Human asparaginase 3 (hASNase3), which belongs to the N-terminal nucleophile hydrolase superfamily, is synthesized as a single polypeptide that is devoid of asparaginase activity. Intramolecular autoproteolytic processing releases the amino group of Thr168, a moiety required for catalyzing asparagine hydrolysis. Recombinant hASNase3 purifies as the uncleaved, asparaginase-inactive form and undergoes self-cleavage to the active form at a very slow rate. Here, we show that the free amino acid glycine selectively acts to accelerate hASNase3 cleavage both in vitro and in human cells. Other small amino acids such as alanine, serine, or the substrate asparagine are not capable of promoting autoproteolysis. Crystal structures of hASNase3 in complex with glycine in the uncleaved and cleaved enzyme states reveal the mechanism of glycine-accelerated posttranslational processing and explain why no other amino acid can substitute for glycine.

Free glycine accelerates the autoproteolytic activation of human asparaginase.,Su Y, Karamitros CS, Nomme J, McSorley T, Konrad M, Lavie A Chem Biol. 2013 Apr 18;20(4):533-40. doi: 10.1016/j.chembiol.2013.03.006. PMID:23601642^[2]

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

References

↑ Cantor JR, Stone EM, Chantranupong L, Georgiou G. The human asparaginase-like protein 1 hASRGL1 is an Ntn hydrolase with beta-aspartyl peptidase activity. Biochemistry. 2009 Nov 24;48(46):11026-31. doi: 10.1021/bi901397h. PMID:19839645 doi:10.1021/bi901397h
↑ Su Y, Karamitros CS, Nomme J, McSorley T, Konrad M, Lavie A. Free glycine accelerates the autoproteolytic activation of human asparaginase. Chem Biol. 2013 Apr 18;20(4):533-40. doi: 10.1016/j.chembiol.2013.03.006. PMID:23601642 doi:http://dx.doi.org/10.1016/j.chembiol.2013.03.006

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/4osx"

Categories: Human | Lavie, A | Nomme, J | Hydrolase | Ntn enzyme

@@ Line 1: / Line 1: @@
 ==STRUCTURE of UNCLEAVED GLYCINE-BOUND HUMAN L-ASPARAGINASE PROTEIN==
 <StructureSection load='4osx' size='340' side='right' caption='[[4osx]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
@@ Line 6: / Line 7: @@
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4osy|4osy]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ALP, ASRGL1, CRASH ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=4osx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4osx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4osx RCSB], [http://www.ebi.ac.uk/pdbsum/4osx 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=4osx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4osx OCA], [http://pdbe.org/4osx PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4osx RCSB], [http://www.ebi.ac.uk/pdbsum/4osx PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4osx ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 18: / Line 19: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4osx" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4osx

From Proteopedia

Revision as of 16:26, 5 August 2016

STRUCTURE of UNCLEAVED GLYCINE-BOUND HUMAN L-ASPARAGINASE PROTEIN

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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