Molecular ruler mechanism and interfacial catalysis of the integral membrane acyltransferase PatA.
Molecular ruler mechanism and interfacial catalysis of the integral membrane acyltransferase PatA.
复制标题
DOI:
10.1126/sciadv.abj4565
复制
发表时间:
2021-10-15
期刊:
影响因子:
13.6
通讯作者:
Guerin ME
中科院分区:
文献类型:
--
作者:
Anso I;Basso LGM;Wang L;Marina A;Páez-Pérez ED;Jäger C;Gavotto F;Tersa M;Perrone S;Contreras FX;Prandi J;Gilleron M;Linster CL;Corzana F;Lowary TL;Trastoy B;Guerin ME
The integral membrane acyltransferase PatA uses a molecular ruler mechanism for acyl chain length recognition and transfer. Glycolipids are prominent components of bacterial membranes that play critical roles not only in maintaining the structural integrity of the cell but also in modulating host-pathogen interactions. PatA is an essential acyltransferase involved in the biosynthesis of phosphatidyl-myo-inositol mannosides (PIMs), key structural elements and virulence factors of Mycobacterium tuberculosis. We demonstrate by electron spin resonance spectroscopy and surface plasmon resonance that PatA is an integral membrane acyltransferase tightly anchored to anionic lipid bilayers, using a two-helix structural motif and electrostatic interactions. PatA dictates the acyl chain composition of the glycolipid by using an acyl chain selectivity “ruler.” We established this by a combination of structural biology, enzymatic activity, and binding measurements on chemically synthesized nonhydrolyzable acyl–coenzyme A (CoA) derivatives. We propose an interfacial catalytic mechanism that allows PatA to acylate hydrophobic PIMs anchored in the inner membrane of mycobacteria, through the use of water-soluble acyl-CoA donors.
登录
查看更多内容
DOI:
10.1074/jbc.m110.165407
发表时间:
2010-11-26
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Batt SM;Jabeen T;Mishra AK;Veerapen N;Krumbach K;Eggeling L;Besra GS;Fütterer K
通讯作者:
Fütterer K
影响因子:
3.2
作者:
Boldrin, Francesca;Ventura, Marcello;Manganelli, Riccardo
通讯作者:
Manganelli, Riccardo
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
DOI:
10.1107/s0907444909042073
发表时间:
2010-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者:
Richardson DC
影响因子:
3.4
作者:
Couto, Sheila G.;Nonato, M. Cristina;Costa-Filho, Antonio J.
通讯作者:
Costa-Filho, Antonio J.