2jdx

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Revision as of 18:42, 19 January 2015

CRYSTAL STRUCTURE OF HUMAN L-ARGININE:GLYCINE AMIDINOTRANSFERASE, DELETIONMUTANT ATDELTAM302

Structural highlights

2jdx is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	AT38H (Homo sapiens)
Activity:	Glycine amidinotransferase, with EC number 2.1.4.1
Resources:	FirstGlance, OCA, RCSB, PDBsum

Disease

[GATM_HUMAN] Defects in GATM are the cause of arginine:glycine amidinotransferase deficiency (AGAT deficiency) [MIM:612718]. AGAT deficiency is an autosomal recessive disorder characterized by developmental delay/regression, mental retardation, severe disturbance of expressive and cognitive speech, and severe depletion of creatine/phosphocreatine in the brain.

Function

[GATM_HUMAN] Catalyzes the biosynthesis of guanidinoacetate, the immediate precursor of creatine. Creatine plays a vital role in energy metabolism in muscle tissues. May play a role in embryonic and central nervous system development. May be involved in the response to heart failure by elevating local creatine synthesis.^[1] ^[2] ^[3]

Evolutionary Conservation

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

Publication Abstract from PubMed

Human L-arginine:glycine amidinotransferase (AT) shows large structural changes of the 300-flap and of helix H9 upon binding of L-arginine and L-ornithine, described as a closed and an open conformation (Humm, A., Fritsche, E., Steinbacher, S., and Huber, R. (1997) EMBO J. 16, 3373-3385). To elucidate the structural basis of these induced-fit movements, the x-ray structures of AT in complex with the amidino acceptor glycine and its analogs gamma-aminobutyric acid and delta-aminovaleric acid, as well as in complex with the amidino donor analogs L-alanine, L-alpha-aminobutyric acid, and L-norvaline, have been solved at 2.6-, 2.5-, 2.37-, 2.3-, 2.5-, and 2.4-A resolutions, respectively. The latter three compounds were found to stabilize the open conformer. The glycine analogs bind in a distinct manner and do not induce the transition to the open state. The complex with glycine revealed a third binding mode, reflecting the rather broad substrate specificity of AT. These findings identified a role for the alpha-amino group of the ligand in stabilizing the open conformer. The kinetic, structural, and thermodynamic properties of the mutants ATDeltaM302 and ATDelta11 (lacks 11 residues of H9) confirmed the key role of Asn300 and suggest that in mammalian amidinotransferases, the role of helix H9 is in accelerating amidino transfer by an induced-fit mechanism. Helix H9 does not add to the stability of the protein.

The ligand-induced structural changes of human L-Arginine:Glycine amidinotransferase. A mutational and crystallographic study.,Fritsche E, Humm A, Huber R J Biol Chem. 1999 Jan 29;274(5):3026-32. PMID:9915841^[4]

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

References

↑ Cullen ME, Yuen AH, Felkin LE, Smolenski RT, Hall JL, Grindle S, Miller LW, Birks EJ, Yacoub MH, Barton PJ. Myocardial expression of the arginine:glycine amidinotransferase gene is elevated in heart failure and normalized after recovery: potential implications for local creatine synthesis. Circulation. 2006 Jul 4;114(1 Suppl):I16-20. PMID:16820567 doi:10.1161/CIRCULATIONAHA.105.000448
↑ McMinn J, Wei M, Schupf N, Cusmai J, Johnson EB, Smith AC, Weksberg R, Thaker HM, Tycko B. Unbalanced placental expression of imprinted genes in human intrauterine growth restriction. Placenta. 2006 Jun-Jul;27(6-7):540-9. Epub 2005 Aug 24. PMID:16125225 doi:10.1016/j.placenta.2005.07.004
↑ Monk D, Arnaud P, Apostolidou S, Hills FA, Kelsey G, Stanier P, Feil R, Moore GE. Limited evolutionary conservation of imprinting in the human placenta. Proc Natl Acad Sci U S A. 2006 Apr 25;103(17):6623-8. Epub 2006 Apr 13. PMID:16614068 doi:10.1073/pnas.0511031103
↑ Fritsche E, Humm A, Huber R. The ligand-induced structural changes of human L-Arginine:Glycine amidinotransferase. A mutational and crystallographic study. J Biol Chem. 1999 Jan 29;274(5):3026-32. PMID:9915841

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2jdx"

@@ Line 3: / Line 3: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[2jdx]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2JDX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2JDX FirstGlance]. <br>
-</td></tr><tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">AT38H ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">AT38H ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
-<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glycine_amidinotransferase Glycine amidinotransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.4.1 2.1.4.1] </span></td></tr>
+<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glycine_amidinotransferase Glycine amidinotransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.4.1 2.1.4.1] </span></td></tr>
-<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2jdx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jdx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2jdx RCSB], [http://www.ebi.ac.uk/pdbsum/2jdx 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=2jdx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2jdx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2jdx RCSB], [http://www.ebi.ac.uk/pdbsum/2jdx PDBsum]</span></td></tr>
-<table>
+</table>
 == Disease ==
 [[http://www.uniprot.org/uniprot/GATM_HUMAN GATM_HUMAN]] Defects in GATM are the cause of arginine:glycine amidinotransferase deficiency (AGAT deficiency) [MIM:[http://omim.org/entry/612718 612718]]. AGAT deficiency is an autosomal recessive disorder characterized by developmental delay/regression, mental retardation, severe disturbance of expressive and cognitive speech, and severe depletion of creatine/phosphocreatine in the brain.
@@ Line 35: / Line 35: @@
 [[Category: Glycine amidinotransferase]]
 [[Category: Homo sapiens]]
-[[Category: Fritsche, E.]]
+[[Category: Fritsche, E]]
-[[Category: Huber, R.]]
+[[Category: Huber, R]]
-[[Category: Humm, A.]]
+[[Category: Humm, A]]
 [[Category: Catalytic triad]]
 [[Category: Creatine biosynthesis]]

2jdx

From Proteopedia

Revision as of 18:42, 19 January 2015

CRYSTAL STRUCTURE OF HUMAN L-ARGININE:GLYCINE AMIDINOTRANSFERASE, DELETIONMUTANT ATDELTAM302

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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