The Open Virology Journal

ISSN: 1874-3579 ― Volume 13, 2019

Members of 3-O-Sulfotransferases (3-OST) Family: A Valuable Tool from Zebrafish to Humans for Understanding Herpes Simplex Virus Entry

John Baldwin 1, Deepak Shukla 2, 3, Vaibhav Tiwari*, 1, 3
1 Department of Microbiology & Immunology, Midwestern University, Downers Grove, IL 60515, USA
2 Department of Microbiology & Immunology
3 Department of Ophthalmology & Visual Sciences, University of Illinois at Chicago, Chicago IL 60612, USA


The journey of many viruses to infect cells begins when the virus first binds to cell surface heparan sulfate (HS). The initial step of cell attachment or binding during herpes simplex virus type-1 (HSV-1) entry is mediated by envelope glycoprotein B (gB) and C (gC). The binding is followed by fusion between virus envelope and cell membrane during which HSV-1 glycoprotein D (gD) interacts with a modified form of HS know as 3-O-sulfated heparan sulfate (3-OS HS). The rare modification of 3-O-sulfation on HS chain is governed by enzymes known as 3-O-sulfotransferase (3-OST). Currently, there are seven isoforms of human 3-OSTs that have been identified, and with the exception of 3-OST-1, all other 3-OST isoforms allow HSV-1 entry and spread. Recently, the product of the zebrafish (ZF)-encoded 3-OST-3 was also recognized as a gD receptor, which mediates HSV-1 entry and cell-cell fusion similar to human 3-OST-3. Interestingly, the ZF system expresses multiple isoforms of 3-OST which could be very useful for studying the involvement of HS and 3-OS HS in virus tropism and virus-induced inflammation. In addition, therapeutic targeting of 3-OST generated HS is likely to bring about novel interventions against HSV-1. In this review we have taken a closer look at the potential of both human and ZF encoded 3-OSTs as valuable tools in HSV entry and inflammation studies.

Keywords: HSV, viral entry, heparan sulfate, modified form of heparan sulfate..

Article Information

Identifiers and Pagination:

Year: 2013
Volume: 7
First Page: 5
Last Page: 11
Publisher Id: TOVJ-7-5
DOI: 10.2174/1874357901307010005

Article History:

Received Date: 20/8/2012
Revision Received Date: 28/9/2012
Acceptance Date: 17/10/2012
Electronic publication date: 21/1/2013
Collection year: 2013

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© Baldwin et al.; Licensee Bentham Open.

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Microbiology & Immunology at 555 31st street, Midwestern University, Downers Grove, IL 60515, USA; Tel: 630-515-6358; E-mail:


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