Preparation of cross-linked hen-egg white lysozyme crystals free of cracks.

Abstract:

:Cross-linked protein crystals (CLPCs) are very useful materials in applications such as biosensors, catalysis, and X-ray crystallography. Hence, preparation of CLPCs is an important research direction. During the preparation of CLPCs, an often encountered problem is that cracks may appear in the crystals, which may finally lead to shattering of the crystals into small pieces and cause problem in practical applications. To avoid cross-link induced cracking, it is necessary to study the cracking phenomenon in the preparation process. In this paper, we present an investigation on how to avoid cracking during preparation of CLPCs. An orthogonal experiment was designed to study the phenomenon of cross-link induced cracking of hen-egg white lysozyme (HEWL) crystals against five parameters (temperature, solution pH, crystal growth time, glutaraldehyde concentration, and cross-linking time). The experimental results showed that, the solution pH and crystal growth time can significantly affect cross-link induced cracking. The possible mechanism was studied, and optimized conditions for obtaining crack-free CLPCs were obtained and experimentally verified.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Yan EK,Lu QQ,Zhang CY,Liu YL,He J,Chen D,Wang B,Zhou RB,Wu P,Yin DC

doi

10.1038/srep34770

subject

Has Abstract

pub_date

2016-10-05 00:00:00

pages

34770

issn

2045-2322

pii

srep34770

journal_volume

6

pub_type

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