RHOB GAPs stimulate RHOB GTPase activity
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The following GTPase activating proteins (GAPs) were shown to bind RHOB and stimulate its GTPase activity, resulting in GTP to GDP hydrolysis and conversion of the active RHOB:GTP complex into the inactive RHOB:GDP complex (the high throughput study by Bagci et al. 2020 examined binding to the active RHOB mutant but not activation of RHOB GTPase activity):<br>ABR (Amin et al. 2016, supported by Bagci et al. 2020)<br>ARHGAP1 (Amin et al. 2016, supported by Bagci et al. 2020)<br>ARHGAP5 (Kusama et al. 2006, supported by Bagci et al. 2020)<br>ARHGAP26 (Amin et al. 2016)<br>DLC1 (Healy et al. 2008, Amin et al. 2016)<br>MYO9B (Graf et al. 2000, supported by Bagci et al. 2020)<br>STARD13 (Amin et al. 2016)<br><br>The following GAPs were shown to bind RHOB and stimulate its GTPase activity in some but not all studies or have only been shown to bind to the active RHOB (as indicated) and are annotated as candidate RHOB GAPs:<br>ARHGAP21 (Bagci et al. 2020: binds to active RHOB)<br>ARHGAP32 (Bagci et al. 2020: binds to active RHOB)<br>ARHGAP35 (RHOB directed GAP activity: Amin et al. 2016; Bagci et al. 2020: no binding to active RHOB)<br>ARHGAP39 (Bagci et al. 2020: binds to active RHOB)<br>BCR (Bagci et al. 2020: binds to active RHOB)<br>DEPDC1B (Bagci et al. 2020: binds to active RHOB)<br>MYO9A (Bagci et al. 2020: binds to active RHOB)<br>OPHN1 (RHOB directed GAP activity: Amin et al. 2016; Bagci et al. 2020: no binding to active RHOB)<br>PIK3R1 (Bagci et al. 2020: binds to active RHOB)<br>PIK3R2 (Bagci et al. 2020: binds to active RHOB)<br>RACGAP1 (RHOB directed GAP activity: Amin et al. 2016; Bagci et al. 2020: no binding to active RHOB)<br>STARD8 (RHOB directed GAP activity: Braun et al. 2015; no RHOB directed GAP activity: Amin et al. 2016)<br><br>The following GAPs do not act on RHOB or were shown to not bind to the active RHOB, without testing for the ability to activate RHOB GTPase activity (as indicated): <br>ARAP2 (Bagci et al. 2020: does not bind active RHOB)<br>ARAP3 (Bagci et al. 2020: does not bind active RHOB)<br>ARHGAP12 (Bagci et al. 2020: does not bind active RHOB)<br>ARHGAP17 (Amin et al. 2016; Bagci et al. 2020: does not bind active RHOB)<br>ARHGAP29 (Bagci et al. 2020: does not bind active RHOB)<br>ARHGAP31 (Bagci et al. 2020: does not bind active RHOB)<br>ARHGAP42 (Bagci et al. 2020: does not bind active RHOB)<br>SRGAP2 (Bagci et al. 2020: does not bind active RHOB)<br>SYDE1 (Bagci et al. 2020: does not bind active RHOB)
以下GTPase激活蛋白(GAPs)已被证实可结合RHOB并刺激其GTPase活性,导致GTP向GDP的水解以及活性RHOB:GTP复合物向非活性RHOB:GDP复合物的转化(Bagci等人于2020年进行的高通量研究考察了与活性RHOB突变体的结合,但未研究RHOB GTPase活性的激活):<br>ABR(Amin等人2016年,Bagci等人2020年支持)、<br>ARHGAP1(Amin等人2016年,Bagci等人2020年支持)、<br>ARHGAP5(Kusama等人2006年,Bagci等人2020年支持)、<br>ARHGAP26(Amin等人2016年)、<br>DLC1(Healy等人2008年,Amin等人2016年)、<br>MYO9B(Graf等人2000年,Bagci等人2020年支持)、<br>STARD13(Amin等人2016年)、<br><br>以下GAPs在部分而非所有研究中已被证实可结合RHOB并刺激其GTPase活性,或仅被证实可结合活性RHOB(如所示),并被标注为RHOB GAPs候选者:<br>ARHGAP21(Bagci等人2020年:结合活性RHOB)、<br>ARHGAP32(Bagci等人2020年:结合活性RHOB)、<br>ARHGAP35(RHOB导向的GAP活性:Amin等人2016年;Bagci等人2020年:未结合活性RHOB)、<br>ARHGAP39(Bagci等人2020年:结合活性RHOB)、<br>BCR(Bagci等人2020年:结合活性RHOB)、<br>DEPDC1B(Bagci等人2020年:结合活性RHOB)、<br>MYO9A(Bagci等人2020年:结合活性RHOB)、<br>OPHN1(RHOB导向的GAP活性:Amin等人2016年;Bagci等人2020年:未结合活性RHOB)、<br>PIK3R1(Bagci等人2020年:结合活性RHOB)、<br>PIK3R2(Bagci等人2020年:结合活性RHOB)、<br>RACGAP1(RHOB导向的GAP活性:Amin等人2016年;Bagci等人2020年:未结合活性RHOB)、<br>STARD8(RHOB导向的GAP活性:Braun等人2015年;无RHOB导向的GAP活性:Amin等人2016年)、<br><br>以下GAPs不对RHOB发挥作用,或已被证实不结合活性RHOB,未测试其激活RHOB GTPase活性的能力(如所示):<br>ARAP2(Bagci等人2020年:不结合活性RHOB)、<br>ARAP3(Bagci等人2020年:不结合活性RHOB)、<br>ARHGAP12(Bagci等人2020年:不结合活性RHOB)、<br>ARHGAP17(Amin等人2016年;Bagci等人2020年:不结合活性RHOB)、<br>ARHGAP29(Bagci等人2020年:不结合活性RHOB)、<br>ARHGAP31(Bagci等人2020年:不结合活性RHOB)、<br>ARHGAP42(Bagci等人2020年:不结合活性RHOB)、<br>SRGAP2(Bagci等人2020年:不结合活性RHOB)、<br>SYDE1(Bagci等人2020年:不结合活性RHOB)
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