Sphingomonas sp. KT-1 PahZ2 Structure Reveals a Role for Conformational Dynamics in Peptide Bond Hydrolysis.

Sphingomonas sp. KT-1 PahZ2 Structure Reveals a Role for Conformational Dynamics in Peptide Bond Hydrolysis.
复制标题

DOI:
10.1021/acs.jpcb.1c01216
复制
发表时间:
2021-06-10
期刊:
The journal of physical chemistry. B
影响因子:
--
通讯作者:
Miller JM
Miller JM
中科院分区:
其他
文献类型:
--
作者:
Brambley CA;Yared TJ;Gonzalez M;Jansch AL;Wallen JR;Weiland MH;Miller JM

文献摘要

参考文献

被引文献

相似文献

聚天冬氨酸(PAA)是一种常见的水溶性聚羧酸盐,应用范围广泛。PAA的生物降解和环境同化首次在河水细菌菌株,鞘氨醇单胞菌属KT-1和土壤杆菌属KP-2。在鞘氨醇单胞菌KT-1中,PahZ 1 KT-1将β-酰胺键切割成寡聚(天冬氨酸),然后被PahZ 2KT-1降解。最近,我们报道了PahZ 1 KT-1的第一个结构。在这里,我们报告的新结构PahZ 2KT-1绑定到Gd 3 +/Sm 3+或Zn 2+阳离子的二聚体状态与M28金属肽酶家族成员一致。PahZ 2KT-1单体包括二聚化结构域和具有双Zn 2+阳离子的催化结构域。MD方法预测推定的底物结合位点跨越二聚化和催化结构域,其中NaCl促进从开放构象到封闭构象的转变,所述封闭构象将底物定位在催化锌离子附近。PahZ 1 KT-1和PahZ 2KT-1的结构知识将允许蛋白质工程努力开发新的生物降解试剂。
Poly(aspartic acid) (PAA) is a common water-soluble polycarboxylate used in a broad range of applications. PAA biodegradation and environmental assimilation were first identified in river water bacterial strains, Sphingomonas sp. KT-1 and Pedobacter sp. KP-2. Within Sphingomonas sp. KT-1, PahZ1KT-1 cleaves β-amide linkages to oligo(aspartic acid) and then is degraded by PahZ2KT-1. Recently, we reported the first structure for PahZ1KT-1. Here, we report novel structures for PahZ2KT-1 bound to either Gd3+/Sm3+ or Zn2+ cations in a dimeric state consistent with M28 metallopeptidase family members. PahZ2KT-1 monomers include a dimerization domain and a catalytic domain with dual Zn2+ cations. MD methods predict the putative substrate binding site to span across the dimerization and catalytic domains, where NaCl promotes the transition from an open conformation to a closed conformation that positions the substrate adjacent to catalytic zinc ions. Structural knowledge of PahZ1KT-1 and PahZ2KT-1 will allow for protein engineering endeavors to develop novel biodegradation reagents.
DOI: 10.1126/sciadv.1700782
发表时间: 2017-07
期刊: Science advances
影响因子: 13.6
作者:
Geyer R;Jambeck JR;Law KL
通讯作者: Law KL
DOI: 10.1021/bi034845
发表时间: 2003-09-16
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Bienvenue, DL;Gilner, DM;Holz, RC
通讯作者: Holz, RC
DOI: 10.1021/bi0358418
发表时间: 2004-05-11
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Guerrerio, AL;Berg, JM
通讯作者: Berg, JM
DOI: 10.1021/acsmacrolett.0c00437
发表时间: 2020-09-15
期刊: ACS MACRO LETTERS
影响因子: 7.015
作者:
Billiet, Stijn;Trenor, Scott R.
通讯作者: Trenor, Scott R.
DOI: 10.1021/acssuschemeng.0c01158
发表时间: 2020-07-27
影响因子: 8.4
作者:
Brambley, Chad A.;Bolay, Austin L.;Weiland, Mitch H.
通讯作者: Weiland, Mitch H.