Role of the N-linked glycans of the prM and E envelope proteins in tick-borne encephalitis virus particle secretion

The tick-borne encephalitis (TBE) virus has two membrane glycoproteins (prM and E), which each has one N-linked glycan. Constructs that express prM and E proteins of TBE virus have been shown to produce virus-like particles (VLPs), which have surface properties that are similar to those of infectiou...

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Veröffentlicht in:Vaccine 2005-04, Vol.23 (23), p.3043-3052
Hauptverfasser: Goto, Akiko, Yoshii, Kentarou, Obara, Mayumi, Ueki, Tomotaka, Mizutani, Tetsuya, Kariwa, Hiroaki, Takashima, Ikuo
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container_end_page 3052
container_issue 23
container_start_page 3043
container_title Vaccine
container_volume 23
creator Goto, Akiko
Yoshii, Kentarou
Obara, Mayumi
Ueki, Tomotaka
Mizutani, Tetsuya
Kariwa, Hiroaki
Takashima, Ikuo
description The tick-borne encephalitis (TBE) virus has two membrane glycoproteins (prM and E), which each has one N-linked glycan. Constructs that express prM and E proteins of TBE virus have been shown to produce virus-like particles (VLPs), which have surface properties that are similar to those of infectious viruses. To reveal the function of glycosylation of the TBE virus prM and E proteins in the secretion of VLPs, we expressed glycosylation-mutated prM and E proteins and compared the secretion levels and biological properties of the VLPs. In the prM protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 60% of the wild-type level. On the other hand, in the E or prM-E protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 10% of the wild-type level. Furthermore, the mutant which was glycosylated at positions 66 and 154 in protein E, the level of secreted E protein was four-fold higher than that of the wild-type. However, in the mutant which was glycosylated at position 66 only, E protein secretion was reduced to only 10% of the wild-type level. These data suggest that the glycan associated with the N-linked glycosylation site at position 154 in protein E plays an important role in VLP secretion.
doi_str_mv 10.1016/j.vaccine.2004.11.068
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Constructs that express prM and E proteins of TBE virus have been shown to produce virus-like particles (VLPs), which have surface properties that are similar to those of infectious viruses. To reveal the function of glycosylation of the TBE virus prM and E proteins in the secretion of VLPs, we expressed glycosylation-mutated prM and E proteins and compared the secretion levels and biological properties of the VLPs. In the prM protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 60% of the wild-type level. On the other hand, in the E or prM-E protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 10% of the wild-type level. Furthermore, the mutant which was glycosylated at positions 66 and 154 in protein E, the level of secreted E protein was four-fold higher than that of the wild-type. However, in the mutant which was glycosylated at position 66 only, E protein secretion was reduced to only 10% of the wild-type level. 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Constructs that express prM and E proteins of TBE virus have been shown to produce virus-like particles (VLPs), which have surface properties that are similar to those of infectious viruses. To reveal the function of glycosylation of the TBE virus prM and E proteins in the secretion of VLPs, we expressed glycosylation-mutated prM and E proteins and compared the secretion levels and biological properties of the VLPs. In the prM protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 60% of the wild-type level. On the other hand, in the E or prM-E protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 10% of the wild-type level. Furthermore, the mutant which was glycosylated at positions 66 and 154 in protein E, the level of secreted E protein was four-fold higher than that of the wild-type. However, in the mutant which was glycosylated at position 66 only, E protein secretion was reduced to only 10% of the wild-type level. 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Constructs that express prM and E proteins of TBE virus have been shown to produce virus-like particles (VLPs), which have surface properties that are similar to those of infectious viruses. To reveal the function of glycosylation of the TBE virus prM and E proteins in the secretion of VLPs, we expressed glycosylation-mutated prM and E proteins and compared the secretion levels and biological properties of the VLPs. In the prM protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 60% of the wild-type level. On the other hand, in the E or prM-E protein glycosylation-deficient mutant, the level of secreted E protein was reduced to 10% of the wild-type level. Furthermore, the mutant which was glycosylated at positions 66 and 154 in protein E, the level of secreted E protein was four-fold higher than that of the wild-type. However, in the mutant which was glycosylated at position 66 only, E protein secretion was reduced to only 10% of the wild-type level. These data suggest that the glycan associated with the N-linked glycosylation site at position 154 in protein E plays an important role in VLP secretion.</abstract><cop>Oxford</cop><pub>Elsevier Ltd</pub><pmid>15811651</pmid><doi>10.1016/j.vaccine.2004.11.068</doi><tpages>10</tpages></addata></record>
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1873-2518
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source MEDLINE; Access via ScienceDirect (Elsevier); ProQuest Central UK/Ireland
subjects Amino acids
Applied microbiology
Biological and medical sciences
Biological properties
Carbohydrates
Colleges & universities
Encephalitis Viruses, Tick-Borne - physiology
Enzymes
Fundamental and applied biological sciences. Psychology
Glycoproteins
Glycosylation
Glycosylation sites
Humans
Microbiology
Miscellaneous
Mutagenesis
Mutation
Plasmids
Protein Folding
Secretion
Tick-borne encephalitis virus
Vaccines, antisera, therapeutical immunoglobulins and monoclonal antibodies (general aspects)
Viral Envelope Proteins - chemistry
Viral Envelope Proteins - physiology
Viral infections
Virion - physiology
Virology
Viruses
title Role of the N-linked glycans of the prM and E envelope proteins in tick-borne encephalitis virus particle secretion
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