Transmembrane transport of polycyclic aromatic hydrocarbons by bacteria and functional regulation of membrane proteins  

作　　者：Hongqi Wang Ruhan Jiang Dekang Kong Zili Liu Xiaoxiong Wu Jie Xu Yi Li 

机构地区：[1]College of Water Sciences,Beijing Normal University,Beijing 100875,China [2]Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection(Ministry of Education),Guangxi Normal University,Guilin 541004,China [3]College of Environment and Resource,Guangxi Normal University,Guilin 541004,China

出　　处：《Frontiers of Environmental Science & Engineering》2020年第1期1-21,共21页环境科学与工程前沿（英文）

基　　金：This work is sponsored by the National Natural Science Foundation of China(Grant No.41772234);the Natural Science Foundation of Guangxi(Grant No.2017GXNSFBA198168).

摘　　要：In recent years,increasing research has been conducted on transmembrane transport processes and the mechanisms behind the microbial breakdown of polycyclic aromatic hydrocarbons(PAHs),including the role of membrane proteins in transmembrane transport and the mode of transmission.This article explains the adsorption,uptake and transmembrane transport of PAHs by bacteria,the regulation of membrane protein function during the transmembrane transport.There are three different regulation mechanisms for uptake,depending on the state and size of the oil droplets relative to the size of the microbial cells,which are(i)direct adhesion,(ii)emulsification and pseudosolubilization,and(iii)interfacial uptake.Furthermore,two main transmembrane transport modes are introduced,which are(i)active transport and(ii)passive uptake and active efflux mechanism.Meanwhile,introduce the proteomics and single cell analysis technology used to address these areas of research,such as Isobaric tags for relative and absolute quantitation(iTRAQ)technology and Nano Secondary ion mass spectrometry(Nano-SIMS).Additionally,analyze the changes in morphology and structure and the characteristics of microbial cell membranes in the process of transmembrane transport.Finally,recognize the microscopic mechanism of PAHs biodegradation in terms of cell and membrane proteins are of great theoretical and practical significance for understanding the factors that influence the efficient degradation of PAHs contaminants in soil and for remediating the PAHs contamination in this area with biotechnology.

关 键 词：POLYCYCLIC AROMATIC hydrocarbons TRANSMEMBRANE transport Adsorption and UPTAKE of hydrocarbons PROTEOMICS Functional regulation of membrane protein Single cell analysis technology 

分 类 号：O64[理学—物理化学]