Highly Conserved Molecular Features in IgLONs Contrast Their Distinct Structural and Biological Outcomes.
Highly Conserved Molecular Features in IgLONs Contrast Their Distinct Structural and Biological Outcomes.
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DOI:
10.1016/j.jmb.2020.07.014
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发表时间:
2020-09-04
影响因子:
5.6
通讯作者:
Rudenko G
中科院分区:
文献类型:
--
作者:
Venkannagari H;Kasper JM;Misra A;Rush SA;Fan S;Lee H;Sun H;Seshadrinathan S;Machius M;Hommel JD;Rudenko G
Neuronal growth regulator 1 (NEGR1) and neurotrimin (NTM) are abundant cell-surface proteins found in brain and form part of the IgLON (Immunoglobulin LSAMP, OBCAM, Neurotrimin) family. In humans, NEGR1 is implicated in obesity and mental disorders, while NTM is linked to intelligence and cognitive function. IgLONs dimerize homophilically and heterophilically, and they are thought to shape synaptic connections and neural circuits by acting in trans (spanning cellular junctions) and/or in cis (at the same side of a junction). Here, we reveal homodimeric structures of NEGR1 and NTM. They assemble into V-shaped complexes via their Ig1 domains, and disruption of the Ig1-Ig1 interface abolishes dimerization in solution. A hydrophobic ridge from one Ig1 domain inserts into a hydrophobic pocket from the opposing Ig1 domain producing an interaction interface that is highly conserved among IgLONs but remarkably plastic structurally. Given the high degree of sequence conservation at the interaction interface, we tested whether different IgLONs could elicit the same biological effect in vivo. In a small scale study, administering different soluble IgLONs directly into the brain and monitoring feeding, only NEGR1 altered food intake significantly. Taking NEGR1 as a prototype, our studies thus indicate that while IgLONs share a conserved mode of interaction and are able to bind each other as homomers and heteromers, they are structurally plastic and can exert unique biological action.
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影响因子:
5.7
作者:
Dennis EL;Jahanshad N;Braskie MN;Warstadt NM;Hibar DP;Kohannim O;Nir TM;McMahon KL;de Zubicaray GI;Montgomery GW;Martin NG;Toga AW;Wright MJ;Thompson PM
通讯作者:
Thompson PM
影响因子:
16.2
作者:
Cosmanescu F;Katsamba PS;Sergeeva AP;Ahlsen G;Patel SD;Brewer JJ;Tan L;Xu S;Xiao Q;Nagarkar-Jaiswal S;Nern A;Bellen HJ;Zipursky SL;Honig B;Shapiro L
通讯作者:
Shapiro L
影响因子:
16.2
作者:
Perez de Arce K;Schrod N;Metzbower SWR;Allgeyer E;Kong GK;Tang AH;Krupp AJ;Stein V;Liu X;Bewersdorf J;Blanpied TA;Lucić V;Biederer T
通讯作者:
Biederer T
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
64.8
作者:
Fan, W;Boston, BA;Cone, RD
通讯作者:
Cone, RD