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1r1z

From Proteopedia

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{{STRUCTURE_1r1z| PDB=1r1z | SCENE= }}
{{STRUCTURE_1r1z| PDB=1r1z | SCENE= }}
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'''The Crystal structure of the Carbohydrate recognition domain of the glycoprotein sorting receptor p58/ERGIC-53 reveals a novel metal binding site and conformational changes associated with calcium ion binding'''
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===The Crystal structure of the Carbohydrate recognition domain of the glycoprotein sorting receptor p58/ERGIC-53 reveals a novel metal binding site and conformational changes associated with calcium ion binding===
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==Overview==
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p58/ERGIC-53 is a calcium-dependent animal lectin that acts as a cargo receptor, binding to a set of glycoproteins in the endoplasmic reticulum (ER) and transporting them to the Golgi complex. It is similar in structure to calcium-dependent leguminous lectins. We have determined the structure of the carbohydrate-recognition domain of p58/ERGIC-53 in its calcium-bound form. The structure reveals localized but large conformational changes in relation to the previously determined metal ion-free structure, mapping mostly to the ligand-binding site. It reveals the presence of two calcium ion-binding sites located 6A apart, one of which has no equivalent in the plant lectins. The second metal ion-binding site present in that class of lectins, binding Mn(2+), is absent from p58/ERGIC-53. The absence of a short loop in the ligand-binding site in this protein suggests that it has adapted to optimally bind the high-mannose Man(8)(GlcNAc)(2) glycan common to glycoproteins at the ER exit stage.
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(as it appears on PubMed at http://www.pubmed.gov), where 14643651 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14643651}}
==About this Structure==
==About this Structure==
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[[Category: Lectin]]
[[Category: Lectin]]
[[Category: Mammalian]]
[[Category: Mammalian]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 06:58:40 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 05:07:56 2008''

Revision as of 02:07, 28 July 2008

Image:1r1z.png

Template:STRUCTURE 1r1z

The Crystal structure of the Carbohydrate recognition domain of the glycoprotein sorting receptor p58/ERGIC-53 reveals a novel metal binding site and conformational changes associated with calcium ion binding

Template:ABSTRACT PUBMED 14643651

About this Structure

1R1Z is a Single protein structure of sequence from Rattus norvegicus. Full crystallographic information is available from OCA.

Reference

The crystal structure of the carbohydrate-recognition domain of the glycoprotein sorting receptor p58/ERGIC-53 reveals an unpredicted metal-binding site and conformational changes associated with calcium ion binding., Velloso LM, Svensson K, Pettersson RF, Lindqvist Y, J Mol Biol. 2003 Dec 12;334(5):845-51. PMID:14643651

Page seeded by OCA on Mon Jul 28 05:07:56 2008

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