6EFZ

Crystal Structure of DIP-Theta Ig1-3

6EFZ の概要

• エントリーDOI: 10.2210/pdb6efz/pdb
• 分子名称: Dpr-interacting protein theta, alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose, beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose, ... (7 entities in total)
• 機能のキーワード: immunoglobulin super-family, synaptic specification, nervous system development, cell-surface protein, cell adhesion
• 由来する生物種: Drosophila melanogaster (Fruit fly)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 36345.29

構造登録者

Cosmanescu, F.,Shapiro, L. (登録日: 2018-08-17, 公開日: 2018-11-28, 最終更新日: 2024-10-30)

主引用文献

Cosmanescu, F.,Katsamba, P.S.,Sergeeva, A.P.,Ahlsen, G.,Patel, S.D.,Brewer, J.J.,Tan, L.,Xu, S.,Xiao, Q.,Nagarkar-Jaiswal, S.,Nern, A.,Bellen, H.J.,Zipursky, S.L.,Honig, B.,Shapiro, L.
Neuron-Subtype-Specific Expression, Interaction Affinities, and Specificity Determinants of DIP/Dpr Cell Recognition Proteins.
Neuron, 100:1385-, 2018

PubMed Abstract: Binding between DIP and Dpr neuronal recognition proteins has been proposed to regulate synaptic connections between lamina and medulla neurons in the Drosophila visual system. Each lamina neuron was previously shown to express many Dprs. Here, we demonstrate, by contrast, that their synaptic partners typically express one or two DIPs, with binding specificities matched to the lamina neuron-expressed Dprs. A deeper understanding of the molecular logic of DIP/Dpr interaction requires quantitative studies on the properties of these proteins. We thus generated a quantitative affinity-based DIP/Dpr interactome for all DIP/Dpr protein family members. This revealed a broad range of affinities and identified homophilic binding for some DIPs and some Dprs. These data, along with full-length ectodomain DIP/Dpr and DIP/DIP crystal structures, led to the identification of molecular determinants of DIP/Dpr specificity. This structural knowledge, along with a comprehensive set of quantitative binding affinities, provides new tools for functional studies in vivo.

PubMed: 30467080
DOI: 10.1016/j.neuron.2018.10.046

実験手法

X-RAY DIFFRACTION (3.499 Å)