The Role of C2 Domains in Two Different Phosphatases: PTEN and SHIP2.
The Role of C2 Domains in Two Different Phosphatases: PTEN and SHIP2.
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DOI:
10.3390/membranes13040408
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发表时间:
2023-04-04
期刊:
影响因子:
4.2
通讯作者:
Larsen AH
中科院分区:
文献类型:
--
作者:
John LH;Naughton FB;Sansom MSP;Larsen AH
Phosphatase and tensin homologue (PTEN) and SH2-containing inositol 5′-phosphatase 2 (SHIP2) are structurally and functionally similar. They both consist of a phosphatase (Ptase) domain and an adjacent C2 domain, and both proteins dephosphorylate phosphoinositol-tri(3,4,5)phosphate, PI(3,4,5)P3; PTEN at the 3-phophate and SHIP2 at the 5-phosphate. Therefore, they play pivotal roles in the PI3K/Akt pathway. Here, we investigate the role of the C2 domain in membrane interactions of PTEN and SHIP2, using molecular dynamics simulations and free energy calculations. It is generally accepted that for PTEN, the C2 domain interacts strongly with anionic lipids and therefore significantly contributes to membrane recruitment. In contrast, for the C2 domain in SHIP2, we previously found much weaker binding affinity for anionic membranes. Our simulations confirm the membrane anchor role of the C2 domain in PTEN, as well as its necessity for the Ptase domain in gaining its productive membrane-binding conformation. In contrast, we identified that the C2 domain in SHIP2 undertakes neither of these roles, which are generally proposed for C2 domains. Our data support a model in which the main role of the C2 domain in SHIP2 is to introduce allosteric interdomain changes that enhance catalytic activity of the Ptase domain.
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DOI:
10.1016/j.bbalip.2015.02.013
发表时间:
2015-06
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
Hammond GR;Balla T
通讯作者:
Balla T
影响因子:
64.8
作者:
Harris CR;Millman KJ;van der Walt SJ;Gommers R;Virtanen P;Cournapeau D;Wieser E;Taylor J;Berg S;Smith NJ;Kern R;Picus M;Hoyer S;van Kerkwijk MH;Brett M;Haldane A;Del Río JF;Wiebe M;Peterson P;Gérard-Marchant P;Sheppard K;Reddy T;Weckesser W;Abbasi H;Gohlke C;Oliphant TE
通讯作者:
Oliphant TE
影响因子:
4.8
作者:
Le Coq, Johanne;Lopez Navajas, Pilar;Lietha, Daniel
通讯作者:
Lietha, Daniel
影响因子:
5.5
作者:
de Jong, Djurre H.;Singh, Gurpreet;Marrink, Siewert J.
通讯作者:
Marrink, Siewert J.
影响因子:
5.5
作者:
Lopez, Cesar A.;Sovova, Zofie;Marrink, Siewert J.
通讯作者:
Marrink, Siewert J.