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1e8i

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[[Image:1e8i.gif|left|200px]]
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[[Image:1e8i.png|left|200px]]
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{{STRUCTURE_1e8i| PDB=1e8i | SCENE= }}
{{STRUCTURE_1e8i| PDB=1e8i | SCENE= }}
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'''HUMAN CD69-TETRAGONAL FORM'''
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===HUMAN CD69-TETRAGONAL FORM===
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==Overview==
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CD69, one of the earliest specific antigens acquired during lymphoid activation, acts as a signal-transducing receptor involved in cellular activation events, including proliferation and induction of specific genes. CD69 belongs to a family of receptors that modulate the immune response and whose genes are clustered in the natural killer (NK) gene complex. The extracellular portion of these receptors represent a subfamily of C-type lectin-like domains (CTLDs), which are divergent from true C-type lectins and are referred to as NK-cell domains (NKDs). We have determined the three-dimensional structure of human CD69 NKD in two different crystal forms. CD69 NKD adopts the canonical CTLD fold but lacks the features involved in Ca(2+) and carbohydrate binding by C-type lectins. CD69 NKD dimerizes noncovalently, both in solution and in crystalline state. The dimer interface consists of a hydrophobic, loosely packed core, surrounded by polar interactions, including an interdomain beta sheet. The intersubunit core shows certain structural plasticity that may facilitate conformational rearrangements for binding to ligands. The surface equivalent to the binding site of other members of the CTLD superfamily reveals a hydrophobic patch surrounded by conserved charged residues that probably constitutes the CD69 ligand-binding site.
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The line below this paragraph, {{ABSTRACT_PUBMED_11036086}}, adds the Publication Abstract to the page
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(as it appears on PubMed at http://www.pubmed.gov), where 11036086 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11036086}}
==About this Structure==
==About this Structure==
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[[Category: Leucocyte]]
[[Category: Leucocyte]]
[[Category: Nkd]]
[[Category: Nkd]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 14:47:39 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 00:19:11 2008''

Revision as of 21:19, 30 June 2008

Image:1e8i.png

Template:STRUCTURE 1e8i

HUMAN CD69-TETRAGONAL FORM

Template:ABSTRACT PUBMED 11036086

About this Structure

1E8I is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of the C-type lectin-like domain from the human hematopoietic cell receptor CD69., Llera AS, Viedma F, Sanchez-Madrid F, Tormo J, J Biol Chem. 2001 Mar 9;276(10):7312-9. Epub 2000 Oct 17. PMID:11036086

Page seeded by OCA on Tue Jul 1 00:19:11 2008

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