Journal
JOURNAL OF MOLECULAR RECOGNITION
Volume 34, Issue 6, Pages -Publisher
WILEY
DOI: 10.1002/jmr.2886
Keywords
Amoebiasis; Entamoeba histolytica; Molecular simulation; Protein‐ protein interaction; SNARE proteins
Categories
Funding
- DST-FIST, New Delhi, India
- Nirma University Minor Resarch, Ahemdabad, India
- Science and Engineering Research Board, New Delhi, India [SR/FST/LSI/2017/56, NU/DRI/MiniResPrj/IS/2019-20/2743, EEQ/2019/000747]
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Entamoeba histolytica invades host tissue through an effective secretory pathway using pore-forming complex amoebapore and various proteases enzymes. SNAREs proteins, an important component of membrane-trafficking machinery, play a crucial role in vesicle transport and fusion in eukaryotic cells, but the structural information and protein-protein interaction of E. histolytica-associated SNAREs proteins are still unknown.
Entamoeba histolytica (Eh), a parasitic protozoan and the causative agent of invasive Amoebiasis, invade the host tissue through an effective secretory pathway. There are several lines of evidence suggesting that amoebic trophozoite pore-forming complex amoebapore and a large class of proteases enzymes including rhomboid proteases, cysteine proteases, and metalloproteases are implicated in host tissue invasion. For successful delivery of these molecules/cargos, trophozoites heavily rely on sorting machinery from the endoplasmic reticulum, Golgi to plasma membrane. Although, sole secretion machinery in E. histolytica is not characterized yet. Therefore, here our aim is to understand the properties of key molecules N-ethylmaleimide-sensitive fusion protein attached to protein receptors (SNAREs) in E. histolytica. SNAREs proteins are an important component of the membrane-trafficking machinery and have been associated in a range of processes including vesicle tethering, fusion as well as specificity of vesicular transport in all eukaryotic cells. SNARE proteins are architecturally simple, categorized by the presence of one copy of a homologous coiled-coil forming motif. However, the structural information and protein-protein interaction study of Eh-associated syntaxin proteins are still not known. Here, we characterize the syntaxin 1 like molecule and VAMP from Eh through physiochemical profiling, modeling, atomistic simulation, protein-protein interaction, and docking approaches on the proteins containing SNARE and synaptobrevin domain. The modeled structures and the critical residues recognized through protein interaction and docking study may provide better structural and functional insights into these proteins and may aid in the development of newer diagnostic assays.
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