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VirusDisease

, Volume 26, Issue 4, pp 276–281 | Cite as

Retrospective phylogenetic analysis of circulating BA genotype of human respiratory syncytial virus with 60 bp duplication from New Delhi, India during 2007–2010

  • VLN Raghuram S
  • Wajihul Hasan Khan
  • Farah Deeba
  • Wayne Sullender
  • Shobha Broor
  • Shama Parveen
Original Article

Abstract

Human respiratory syncytial virus (hRSV) is the most common viral pathogen of acute lower respiratory tract infection in infants and young children. The G protein of hRSV is the trans-membrane glycoprotein that is involved in the attachment of virion with the host cell. The nasopharyngeal aspirates were subjected to RT-PCR for the second hypervariable region of the G protein gene in the present investigation. Sequencing and phylogenetic analysis revealed that all the study strains clustered within the BA genotype. The study sequences further clustered in BA-9, BA-7, BA-10 and BA-12 subgroups within the BA genotype. The G proteins of the study sequences were predicted to encode 312 and 319 amino acids. Three different N-linked glycosylation sites were observed in the deduced 93–100 amino acid region. There were 40–43 serine and threonine residues that are the potential O-linked glycosylation sites. The non-synonymous/synonymous (dN/dS) ratio was less than one indicating negative selection pressure for amino acid change in the analyzed region of the G protein. The present investigation provides information on circulating strains of BA genotype from New Delhi, India. Further elaborate investigations of the BA viruses from different regions of the world will establish the basis of the rapid global spread and evolutionary pattern of this expanding genotype.

Keywords

BA genotype G protein gene Human respiratory syncytial virus Phylogenetic analysis 

Notes

Acknowledgments

We would like to thank Department of Biotechnology and Indian Council of Medical Research, Government of India for their financial assistance.

Supplementary material

13337_2015_283_MOESM1_ESM.docx (20 kb)
Supplementary material 1 (DOCX 20 kb)

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Copyright information

© Indian Virological Society 2015

Authors and Affiliations

  • VLN Raghuram S
    • 1
  • Wajihul Hasan Khan
    • 2
  • Farah Deeba
    • 2
  • Wayne Sullender
    • 3
  • Shobha Broor
    • 1
    • 4
  • Shama Parveen
    • 2
  1. 1.Department of MicrobiologyAll India Institute of Medical SciencesNew DelhiIndia
  2. 2.Centre for Interdisciplinary Research in Basic SciencesJamia Millia IslamiaNew DelhiIndia
  3. 3.School of Medicine, Center for Global HealthColorado School of Public HealthAuroraUSA
  4. 4.Department of Microbiology, Faculty of Medicine and Health ScienceShree Guru Gobind Singh Tricentenary UniversityGurgaonIndia

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