scholarly journals Cystatin Family Gene

2020 ◽  
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2020 ◽  
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2020 ◽  
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Pathogens ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 388
Author(s):  
Hương Giang Lê ◽  
A-Jeong Ham ◽  
Jung-Mi Kang ◽  
Tuấn Cường Võ ◽  
Haung Naw ◽  
...  

Naegleria fowleri is a free-living amoeba that is ubiquitous in diverse natural environments. It causes a fatal brain infection in humans known as primary amoebic meningoencephalitis. Despite the medical importance of the parasitic disease, there is a great lack of knowledge about the biology and pathogenicity of N. fowleri. In this study, we identified and characterized a novel cysteine protease inhibitor of N. fowleri (NfCPI). NfCPI is a typical cysteine protease inhibitor belonging to the cystatin family with a Gln-Val-Val-Ala-Gly (QVVAG) motif, a characteristic motif conserved in the cystatin family of proteins. Bacterially expressed recombinant NfCPI has a dimeric structure and exhibits inhibitory activity against several cysteine proteases including cathespin Bs of N. fowleri at a broad range of pH values. Expression profiles of nfcpi revealed that the gene was highly expressed during encystation and cyst of the amoeba. Western blot and immunofluorescence assays also support its high level of expression in cysts. These findings collectively suggest that NfCPI may play a critical role in encystation or cyst formation of N. fowleri by regulating cysteine proteases that may mediate encystation or mature cyst formation of the amoeba. More comprehensive studies to investigate the roles of NfCPI in encystation and its target proteases are necessary to elucidate the regulatory mechanism and the biological significance of NfCPI.



2004 ◽  
Vol 38 (6) ◽  
pp. 865-867
Author(s):  
Z. A. Shangareeva ◽  
T. V. Viktorova ◽  
A. F. Sagidullin


1986 ◽  
Vol 261 (18) ◽  
pp. 8442-8452 ◽  
Author(s):  
C A Lowell ◽  
D A Potter ◽  
R S Stearman ◽  
J F Morrow


2018 ◽  
Vol 17 (6) ◽  
pp. 1021-1025 ◽  
Author(s):  
Azizollah Yousefi ◽  
Mehri Najafi ◽  
Farzaneh Motamed ◽  
Elham Mahmoudi ◽  
Alireza Zare Bidoki ◽  
...  


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Zhixuan Du ◽  
Qitao Su ◽  
Zheng Wu ◽  
Zhou Huang ◽  
Jianzhong Bao ◽  
...  

AbstractMultidrug and toxic compound extrusion (MATE) proteins are involved in many physiological functions of plant growth and development. Although an increasing number of MATE proteins have been identified, the understanding of MATE proteins is still very limited in rice. In this study, 46 MATE proteins were identified from the rice (Oryza sativa) genome by homology searches and domain prediction. The rice MATE family was divided into four subfamilies based on the phylogenetic tree. Tandem repeats and fragment replication contribute to the expansion of the rice MATE gene family. Gene structure and cis-regulatory elements reveal the potential functions of MATE genes. Analysis of gene expression showed that most of MATE genes were constitutively expressed and the expression patterns of genes in different tissues were analyzed using RNA-seq. Furthermore, qRT-PCR-based analysis showed differential expression patterns in response to salt and drought stress. The analysis results of this study provide comprehensive information on the MATE gene family in rice and will aid in understanding the functional divergence of MATE genes.



2014 ◽  
Vol 65 (17) ◽  
pp. 5093-5107 ◽  
Author(s):  
Peng Zhao ◽  
Xue-mei Zhou ◽  
Jie Zou ◽  
Wei Wang ◽  
Lu Wang ◽  
...  


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