1li4

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[[Image:1li4.png|left|200px]]
 
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{{STRUCTURE_1li4| PDB=1li4 | SCENE= }}
{{STRUCTURE_1li4| PDB=1li4 | SCENE= }}
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===Human S-adenosylhomocysteine hydrolase complexed with neplanocin===
===Human S-adenosylhomocysteine hydrolase complexed with neplanocin===
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{{ABSTRACT_PUBMED_12590576}}
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{{ABSTRACT_PUBMED_12590576}}
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==Disease==
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[[http://www.uniprot.org/uniprot/SAHH_HUMAN SAHH_HUMAN]] Defects in AHCY are the cause of hypermethioninemia with S-adenosylhomocysteine hydrolase deficiency (HMAHCHD) [MIM:[http://omim.org/entry/613752 613752]]. A metabolic disorder characterized by hypermethioninemia associated with failure to thrive, mental and motor retardation, facial dysmorphism with abnormal hair and teeth, and myocardiopathy.<ref>PMID:15024124</ref><ref>PMID:16736098</ref><ref>PMID:19177456</ref><ref>PMID:20852937</ref>
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==Function==
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[[http://www.uniprot.org/uniprot/SAHH_HUMAN SAHH_HUMAN]] Adenosylhomocysteine is a competitive inhibitor of S-adenosyl-L-methionine-dependent methyl transferase reactions; therefore adenosylhomocysteinase may play a key role in the control of methylations via regulation of the intracellular concentration of adenosylhomocysteine.<ref>PMID:12590576</ref>
==About this Structure==
==About this Structure==
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==Reference==
==Reference==
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<ref group="xtra">PMID:012590576</ref><references group="xtra"/>
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<ref group="xtra">PMID:012590576</ref><references group="xtra"/><references/>
[[Category: Adenosylhomocysteinase]]
[[Category: Adenosylhomocysteinase]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]

Revision as of 05:04, 25 March 2013

Template:STRUCTURE 1li4

Contents

Human S-adenosylhomocysteine hydrolase complexed with neplanocin

Template:ABSTRACT PUBMED 12590576

Disease

[SAHH_HUMAN] Defects in AHCY are the cause of hypermethioninemia with S-adenosylhomocysteine hydrolase deficiency (HMAHCHD) [MIM:613752]. A metabolic disorder characterized by hypermethioninemia associated with failure to thrive, mental and motor retardation, facial dysmorphism with abnormal hair and teeth, and myocardiopathy.[1][2][3][4]

Function

[SAHH_HUMAN] Adenosylhomocysteine is a competitive inhibitor of S-adenosyl-L-methionine-dependent methyl transferase reactions; therefore adenosylhomocysteinase may play a key role in the control of methylations via regulation of the intracellular concentration of adenosylhomocysteine.[5]

About this Structure

1li4 is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

  • Yang X, Hu Y, Yin DH, Turner MA, Wang M, Borchardt RT, Howell PL, Kuczera K, Schowen RL. Catalytic strategy of S-adenosyl-L-homocysteine hydrolase: transition-state stabilization and the avoidance of abortive reactions. Biochemistry. 2003 Feb 25;42(7):1900-9. PMID:12590576 doi:http://dx.doi.org/10.1021/bi0262350
  1. ↑ Baric I, Fumic K, Glenn B, Cuk M, Schulze A, Finkelstein JD, James SJ, Mejaski-Bosnjak V, Pazanin L, Pogribny IP, Rados M, Sarnavka V, Scukanec-Spoljar M, Allen RH, Stabler S, Uzelac L, Vugrek O, Wagner C, Zeisel S, Mudd SH. S-adenosylhomocysteine hydrolase deficiency in a human: a genetic disorder of methionine metabolism. Proc Natl Acad Sci U S A. 2004 Mar 23;101(12):4234-9. Epub 2004 Mar 15. PMID:15024124 doi:10.1073/pnas.0400658101
  2. ↑ Buist NR, Glenn B, Vugrek O, Wagner C, Stabler S, Allen RH, Pogribny I, Schulze A, Zeisel SH, Baric I, Mudd SH. S-adenosylhomocysteine hydrolase deficiency in a 26-year-old man. J Inherit Metab Dis. 2006 Aug;29(4):538-45. Epub 2006 May 30. PMID:16736098 doi:10.1007/s10545-006-0240-0
  3. ↑ Vugrek O, Beluzic R, Nakic N, Mudd SH. S-adenosylhomocysteine hydrolase (AHCY) deficiency: two novel mutations with lethal outcome. Hum Mutat. 2009 Apr;30(4):E555-65. doi: 10.1002/humu.20985. PMID:19177456 doi:10.1002/humu.20985
  4. ↑ Grubbs R, Vugrek O, Deisch J, Wagner C, Stabler S, Allen R, Baric I, Rados M, Mudd SH. S-adenosylhomocysteine hydrolase deficiency: two siblings with fetal hydrops and fatal outcomes. J Inherit Metab Dis. 2010 Dec;33(6):705-13. doi: 10.1007/s10545-010-9171-x. Epub , 2010 Sep 18. PMID:20852937 doi:10.1007/s10545-010-9171-x
  5. ↑ Yang X, Hu Y, Yin DH, Turner MA, Wang M, Borchardt RT, Howell PL, Kuczera K, Schowen RL. Catalytic strategy of S-adenosyl-L-homocysteine hydrolase: transition-state stabilization and the avoidance of abortive reactions. Biochemistry. 2003 Feb 25;42(7):1900-9. PMID:12590576 doi:http://dx.doi.org/10.1021/bi0262350

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