scholarly journals Synthetic Glycosidase Distinguishing Glycan and Glycosidic Linkage in Its Catalytic Hydrolysis

ACS Catalysis ◽  
2020 ◽  
Vol 10 (23) ◽  
pp. 13800-13808
Author(s):  
Xiaowei Li ◽  
Yan Zhao
Marine Drugs ◽  
2021 ◽  
Vol 19 (7) ◽  
pp. 392
Author(s):  
Haomiao Cheng ◽  
Chris Bowler ◽  
Xiaohui Xing ◽  
Vincent Bulone ◽  
Zhanru Shao ◽  
...  

β-Chitin produced by diatoms is expected to have significant economic and ecological value due to its structure, which consists of parallel chains of chitin, its properties and the high abundance of diatoms. Nevertheless, few studies have functionally characterised chitin-related genes in diatoms owing to the lack of omics-based information. In this study, we first compared the chitin content of three representative Thalassiosira species. Cell wall glycosidic linkage analysis and chitin/chitosan staining assays showed that Thalassiosira weissflogii was an appropriate candidate chitin producer. A full-length (FL) transcriptome of T. weissflogii was obtained via PacBio sequencing. In total, the FL transcriptome comprised 23,362 annotated unigenes, 710 long non-coding RNAs (lncRNAs), 363 transcription factors (TFs), 3113 alternative splicing (AS) events and 3295 simple sequence repeats (SSRs). More specifically, 234 genes related to chitin metabolism were identified and the complete biosynthetic pathways of chitin and chitosan were explored. The information presented here will facilitate T. weissflogii molecular research and the exploitation of β-chitin-derived high-value enzymes and products.


Author(s):  
Nardiah Rizwana Jaafar ◽  
Siti Norbaidurah Ayob ◽  
Noor Hidayah Abdul Rahman ◽  
Farah Diba Abu Bakar ◽  
Abdul Munir Abdul Murad ◽  
...  

Synthesis ◽  
2021 ◽  
Author(s):  
Qingjiang Li ◽  
Zhongwu Guo

Glycosphingolipids (GSLs) are the major vertebrate glycolipids, which contain two distinctive moieties, a glycan and a ceramide, stitched together by a β-glycosidic linkage. The hydrophobic lipid chains of ceramide can insert into the cell membrane to form “lipid rafts” and anchor the hydrophilic glycan onto the cell surface to generate microdomains and function as signaling molecules. GSLs mediate signal transduction, cell interaction, and many other biological activities, and are also related to many diseases. To meet the need of biological studies, chemists have developed various synthetic methodologies to access GSLs. Among them, the application of enzymes to GSL synthesis has witnessed significant advancements in the past decades. This review summarizes briefly the history and progress of enzymatic GSL synthesis.


1996 ◽  
Vol 27 (1-2) ◽  
pp. 167-173 ◽  
Author(s):  
Zhaoqi Zhan ◽  
Martin Müllner ◽  
Johannes A. Lercher

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