Characterization of the α-mannosidase gene family in filamentous fungi: N-glycan remodelling for the development of eukaryotic expression systems

2000 ◽  
Vol 5 (4) ◽  
pp. 227-233 ◽  
Author(s):  
C. Joshua Eades ◽  
William E. Hintz
2019 ◽  
Vol 294 (17) ◽  
pp. 6986-7001 ◽  
Author(s):  
Rachel J. Harding ◽  
Peter Loppnau ◽  
Suzanne Ackloo ◽  
Alexander Lemak ◽  
Ashley Hutchinson ◽  
...  

1996 ◽  
Vol 16 (2) ◽  
pp. 107-113 ◽  
Author(s):  
Eduardo M. R. Reis ◽  
Carolyn W. Slayman ◽  
Sergio Verjovski-Almeida

In recent years, expression of rabbit sarcoplasmic reticulum (SR) Ca2+-ATPase in heterologous systems has been a widely used strategy to study altered enzymes generated by site-directed mutagenesis. Various eukaryotic expression systems have been tested, all of them yielding comparable amounts of recombinant protein. However, the relatively low yield of recombinant protein obtained so far suggests that novel purification techniques will be required to allow further characterization of this enzyme based on direct ligand-binding measurements.


Biochemistry ◽  
2020 ◽  
Vol 59 (39) ◽  
pp. 3757-3771
Author(s):  
Asma S. Al-Amoodi ◽  
Kosuke Sakashita ◽  
Amal J. Ali ◽  
Ruoyu Zhou ◽  
Jae Man Lee ◽  
...  

1996 ◽  
Vol 320 (1) ◽  
pp. 129-135 ◽  
Author(s):  
Nathalie LAMARCHE ◽  
Gilles MATTON ◽  
Bernard MASSIE ◽  
Marc FONTECAVE ◽  
Mohamed ATTA ◽  
...  

The R2 subunit of ribonucleotide reductase from herpes simplex virus type 2 was overproduced with prokaryotic and eukaryotic expression systems. The recombinant R2 purified by a two-step procedure exhibited a 3-fold higher activity when produced in eukaryotic cells. Precise quantification of the R2 concentration at each step of the purification indicated that the activity was not altered during the purification procedure. Moreover, we have observed that the level of R2 expression, in eukaryotic cells as well as in prokaryotic cells, did not influence R2 activity. Extensive characterization of the recombinant R2 purified from eukaryotic and prokaryotic expression systems has shown that both types of pure R2 preparations were similar in their 76 kDa dimer contents (more than 95%) and in their ability to bind the R1 subunit. However, we have found that the higher activity of R2 produced in eukaryotic cells is more probably related to a higher capability of binding the iron cofactor as well as a 3-fold greater ability to generate the tyrosyl free radical.


1996 ◽  
Vol 8 (3) ◽  
pp. 271-282 ◽  
Author(s):  
Sabine Geisse ◽  
Hermann Gram ◽  
Beate Kleuser ◽  
Hans P. Kocher

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
B. Owczarek ◽  
A. Gerszberg ◽  
K. Hnatuszko-Konka

Recombinant proteins are produced for various applications in laboratory and industrial settings. Among them, therapeutic applications have evolved into a mature field in recent years, affecting the face of contemporary medical treatment. This, in turn, has stimulated an ever-greater need for innovative technologies for the description, expression, and purification of recombinant protein biopharmaceuticals. Therefore, many biopharmaceuticals are synthesized in heterologous systems to obtain satisfactory yields that cannot be provided by natural sources. As more than 35 years has passed since the first recombinant biopharmaceutical (human insulin) successfully completed clinical trials in humans, we provide a brief review of the available prokaryotic and eukaryotic expression systems, listing the advantages and disadvantages of their use. Some examples of therapeutic proteins expressed in heterologous hosts are also provided. Moreover, technologies for the universal extraction of protein molecules are mentioned here, as is the methodology of their purification.


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