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2hkq

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{{STRUCTURE_2hkq| PDB=2hkq | SCENE= }}
{{STRUCTURE_2hkq| PDB=2hkq | SCENE= }}
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'''Crystal structure of the C-terminal domain of human EB1 in complex with the CAP-Gly domain of human Dynactin-1 (p150-Glued)'''
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===Crystal structure of the C-terminal domain of human EB1 in complex with the CAP-Gly domain of human Dynactin-1 (p150-Glued)===
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==Overview==
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Dynamic microtubule plus-end tracking protein (+TIP) networks are implicated in all functions of microtubules, but the molecular determinants of their interactions are largely unknown. Here, we have explored key binding modes of +TIPs by analyzing the interactions between selected CAP-Gly, EB-like, and carboxy-terminal EEY/F-COO(-) sequence motifs. X-ray crystallography and biophysical binding studies demonstrate that the beta2-beta3 loop of CAP-Gly domains determines EB-like motif binding specificity. They further show how CAP-Gly domains serve as recognition domains for EEY/F-COO(-) motifs, which represent characteristic and functionally important sequence elements in EB, CLIP-170, and alpha-tubulin. Our findings provide a molecular basis for understanding the modular interaction modes between alpha-tubulin, CLIPs, EB proteins, and the dynactin-dynein motor complex and suggest that multiple low-affinity binding sites in different combinations control dynamic +TIP networks at microtubule ends. They further offer insights into the structural consequences of genetic CAP-Gly domain defects found in severe human disorders.
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{{ABSTRACT_PUBMED_16949363}}
==Disease==
==Disease==
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[[Category: Microtubule binding]]
[[Category: Microtubule binding]]
[[Category: P150glued]]
[[Category: P150glued]]
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Revision as of 03:24, 29 July 2008

Image:2hkq.png

Template:STRUCTURE 2hkq

Contents

Crystal structure of the C-terminal domain of human EB1 in complex with the CAP-Gly domain of human Dynactin-1 (p150-Glued)

Template:ABSTRACT PUBMED 16949363

Disease

Known disease associated with this structure: Neuropathy, distal hereditary motor, type VIIB OMIM:[601143], Amyotrophic lateral sclerosis, susceptibility to OMIM:[601143]

About this Structure

2HKQ is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Key interaction modes of dynamic +TIP networks., Honnappa S, Okhrimenko O, Jaussi R, Jawhari H, Jelesarov I, Winkler FK, Steinmetz MO, Mol Cell. 2006 Sep 1;23(5):663-71. PMID:16949363

Page seeded by OCA on Tue Jul 29 06:24:22 2008

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