1o7d
From Proteopedia
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|PDB= 1o7d |SIZE=350|CAPTION= <scene name='initialview01'>1o7d</scene>, resolution 2.70Å | |PDB= 1o7d |SIZE=350|CAPTION= <scene name='initialview01'>1o7d</scene>, resolution 2.70Å | ||
|SITE= <scene name='pdbsite=ACT:Zn+Binding+Site+For+Chain+A'>ACT</scene> | |SITE= <scene name='pdbsite=ACT:Zn+Binding+Site+For+Chain+A'>ACT</scene> | ||
| - | |LIGAND= <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=NDG:2-(ACETYLAMINO)-2-DEOXY-A-D-GLUCOPYRANOSE'>NDG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TRS:2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL'>TRS</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene> |
| - | |ACTIVITY= [http://en.wikipedia.org/wiki/Alpha-mannosidase Alpha-mannosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.24 3.2.1.24] | + | |ACTIVITY= <span class='plainlinks'>[http://en.wikipedia.org/wiki/Alpha-mannosidase Alpha-mannosidase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.24 3.2.1.24] </span> |
|GENE= | |GENE= | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1o7d FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1o7d OCA], [http://www.ebi.ac.uk/pdbsum/1o7d PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1o7d RCSB]</span> | ||
}} | }} | ||
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[[Category: Schoehn, G.]] | [[Category: Schoehn, G.]] | ||
[[Category: Tollersrud, O K.]] | [[Category: Tollersrud, O K.]] | ||
| - | [[Category: NAG]] | ||
| - | [[Category: SO4]] | ||
| - | [[Category: TRS]] | ||
| - | [[Category: ZN]] | ||
[[Category: a-mannosidase]] | [[Category: a-mannosidase]] | ||
[[Category: glycosyl hydrolase family 38]] | [[Category: glycosyl hydrolase family 38]] | ||
[[Category: lysosomal]] | [[Category: lysosomal]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 22:40:57 2008'' |
Revision as of 19:40, 30 March 2008
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| , resolution 2.70Å | |||||||
|---|---|---|---|---|---|---|---|
| Sites: | |||||||
| Ligands: | , , , , , , | ||||||
| Activity: | Alpha-mannosidase, with EC number 3.2.1.24 | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
THE STRUCTURE OF THE BOVINE LYSOSOMAL A-MANNOSIDASE SUGGESTS A NOVEL MECHANISM FOR LOW PH ACTIVATION
Overview
Lysosomal alpha-mannosidase (LAM: EC 3.2.1.24) belongs to the sequence-based glycoside hydrolase family 38 (GH38). Two other mammalian GH38 members, Golgi alpha-mannosidase II (GIIAM) and cytosolic alpha-mannosidase, are expressed in all tissues. In humans, cattle, cat and guinea pig, lack of lysosomal alpha-mannosidase activity causes the autosomal recessive disease alpha-mannosidosis. Here, we describe the three-dimensional structure of bovine lysosomal alpha-mannosidase (bLAM) at 2.7A resolution and confirm the solution state dimer by electron microscopy. We present the first structure of a mammalian GH38 enzyme that offers indications for the signal areas for mannose phosphorylation, suggests a previously undetected mechanism of low-pH activation and provides a template for further biochemical studies of the family 38 glycoside hydrolases as well as lysosomal transport. Furthermore, it provides a basis for understanding the human form of alpha-mannosidosis at the atomic level. The atomic coordinates and structure factors have been deposited in the Protein Data Bank (accession codes 1o7d and r1o7dsf).
About this Structure
1O7D is a Single protein structure of sequence from Bos taurus. Full crystallographic information is available from OCA.
Reference
The structure of bovine lysosomal alpha-mannosidase suggests a novel mechanism for low-pH activation., Heikinheimo P, Helland R, Leiros HK, Leiros I, Karlsen S, Evjen G, Ravelli R, Schoehn G, Ruigrok R, Tollersrud OK, McSweeney S, Hough E, J Mol Biol. 2003 Mar 28;327(3):631-44. PMID:12634058
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