黑龙江农业科学
黑龍江農業科學
흑룡강농업과학
HEILONGJINAG AGRICULTURAL SCIENCE
2013年
1期
120-124
,共5页
生物催化%无载体%固定化%交联酶聚集体%下拉域%自组系统
生物催化%無載體%固定化%交聯酶聚集體%下拉域%自組繫統
생물최화%무재체%고정화%교련매취집체%하랍역%자조계통
biological catalysis%carrier‐free%immobilization%cross‐linked enzyme aggregates%drop domain%self‐organized system
对一种崭新的无载体酶固定化技术———聚集体(Cross‐linked Enzyme Aggregates ,CLEAs)技术进行了文献综述. CLEAs 技术是一种将蛋白质先沉淀后交联形成不溶性的、稳定的固定化酶.交联酶聚集体技术现已用于大量的合成反应.在沉淀和交联所需但具有潜在致变性化学品缺失的情况下,融合蛋白会将目的酶的相对选择性聚集体或其自组系统转为不溶性微粒,因而具有强劲的发展动力.在选定的生物转化中,用于多轮间歇式反应不溶蛋白颗粒的回收已经得到论证.然而,对于全连续生物催化过程应用来说,低耐机械应力和高压缩性依然是无载体酶颗粒所需要考虑的问题.
對一種嶄新的無載體酶固定化技術———聚集體(Cross‐linked Enzyme Aggregates ,CLEAs)技術進行瞭文獻綜述. CLEAs 技術是一種將蛋白質先沉澱後交聯形成不溶性的、穩定的固定化酶.交聯酶聚集體技術現已用于大量的閤成反應.在沉澱和交聯所需但具有潛在緻變性化學品缺失的情況下,融閤蛋白會將目的酶的相對選擇性聚集體或其自組繫統轉為不溶性微粒,因而具有彊勁的髮展動力.在選定的生物轉化中,用于多輪間歇式反應不溶蛋白顆粒的迴收已經得到論證.然而,對于全連續生物催化過程應用來說,低耐機械應力和高壓縮性依然是無載體酶顆粒所需要攷慮的問題.
대일충참신적무재체매고정화기술———취집체(Cross‐linked Enzyme Aggregates ,CLEAs)기술진행료문헌종술. CLEAs 기술시일충장단백질선침정후교련형성불용성적、은정적고정화매.교련매취집체기술현이용우대량적합성반응.재침정화교련소수단구유잠재치변성화학품결실적정황하,융합단백회장목적매적상대선택성취집체혹기자조계통전위불용성미립,인이구유강경적발전동력.재선정적생물전화중,용우다륜간헐식반응불용단백과립적회수이경득도론증.연이,대우전련속생물최화과정응용래설,저내궤계응력화고압축성의연시무재체매과립소수요고필적문제.
Firstly ,a new carrier‐free immobilized enzyme technology‐aggregates ( Cross‐linked Enzyme Aggre‐gates ,CLEAs )technology has been reviewed .CLEAs technology is a kind of protein deposited before cross‐linking to form insoluble ,stability of the immobilized enzyme .Cross‐linked enzyme aggregates technology is now used in a large number of synthesis reaction .In the precipitation and cross‐linking required but has poten‐tial mutagenicity of chemicals is absent ,fusion protein will turn objective enzyme relatively selective aggregates or even its self‐organizing systems into insoluble particles ,which has a strong development momentum .In se‐lected biotransformation ,for many rounds of intermittent type reaction insoluble protein particles recycling has been demonstrated by .However ,for the continuous biocatalytic process applications ,low resistance to mechani‐cal stress and high compressibility are still the question that carrier‐free enzyme particles need to consider .