Please wait, while we are loading the content...
Please wait, while we are loading the content...
| Content Provider | PubMed Central |
|---|---|
| Author | Picken, R. N. |
| Abstract | By cloning and sequencing the flagellin gene of Borrelia hermsii and comparing this sequence with that of the corresponding gene from B. burgdorferi, I identified a central region within the two genes which showed a reduced level of sequence similarity. Oligonucleotide sequences selected from this region produced species-specific amplimers when used in polymerase chain reaction experiments. Thus, primers derived from the B. burgdorferi sequence amplified a 276-bp fragment from 22 strains of B. burgdorferi of diverse geographic origin but not from 5 strains of B. hermsii, 5 other Borrelia species, 16 Treponema, Leptospira, and Spirochaeta species, or representatives of 10 other bacterial genera. However, when the amplified fragments were tested for hybridization with an oligonucleotide probe derived from the nonhomologous region, seven strains from either Germany or Switzerland did not hybridize. Cloning and sequencing of the amplified fragments from these strains revealed that the 22 strains of B. burgdorferi tested could be divided into three groups based on the nucleic acid sequence of the central region of the flagellin gene. With this information, oligonucleotide probes that hybridized to the amplified fragments and were able to differentiate the three groups of B. burgdorferi were designed. The corresponding primers, derived from the B. hermsii gene sequence, were tested for their ability to amplify DNA from this collection of strains. Although no amplification was obtained with representatives of the three groups of B. burgdorferi or various Treponema, Leptospira, and Spirochaeta species, amplification was obtained with the five other Borrelia species (B. parkeri, B. turicatae, B. crocidurae, B. anserina, and B. coriaceae) in addition to the five strains of B. hermsii. Sequencing of the amplified fragments from one strain of B. hermsii as well as B. parkeri and B. turicatae allowed the design of oligonucleotide probes that were able to differentiate the three species of North American relapsing fever spirochetes into two separate groups. These studies suggest that there is sufficient diversity within the flagellin gene sequences of closely related Borrelia species to differentiate them into groups and to pursue taxonomic studies both within and between species. |
| Starting Page | 99 |
| File Format | |
| ISSN | 1098660X |
| e-ISSN | 1098660X |
| Journal | Journal of Clinical Microbiology |
| Issue Number | 1 |
| Volume Number | 30 |
| Language | English |
| Publisher Date | 1992-01-01 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Microbiology (medical) |
National Digital Library of India (NDLI) is a virtual repository of learning resources which is not just a repository with search/browse facilities but provides a host of services for the learner community. It is sponsored and mentored by Ministry of Education, Government of India, through its National Mission on Education through Information and Communication Technology (NMEICT). Filtered and federated searching is employed to facilitate focused searching so that learners can find the right resource with least effort and in minimum time. NDLI provides user group-specific services such as Examination Preparatory for School and College students and job aspirants. Services for Researchers and general learners are also provided. NDLI is designed to hold content of any language and provides interface support for 10 most widely used Indian languages. It is built to provide support for all academic levels including researchers and life-long learners, all disciplines, all popular forms of access devices and differently-abled learners. It is designed to enable people to learn and prepare from best practices from all over the world and to facilitate researchers to perform inter-linked exploration from multiple sources. It is developed, operated and maintained from Indian Institute of Technology Kharagpur.
Learn more about this project from here.
NDLI is a conglomeration of freely available or institutionally contributed or donated or publisher managed contents. Almost all these contents are hosted and accessed from respective sources. The responsibility for authenticity, relevance, completeness, accuracy, reliability and suitability of these contents rests with the respective organization and NDLI has no responsibility or liability for these. Every effort is made to keep the NDLI portal up and running smoothly unless there are some unavoidable technical issues.
Ministry of Education, through its National Mission on Education through Information and Communication Technology (NMEICT), has sponsored and funded the National Digital Library of India (NDLI) project.
| Sl. | Authority | Responsibilities | Communication Details |
|---|---|---|---|
| 1 | Ministry of Education (GoI), Department of Higher Education |
Sanctioning Authority | https://www.education.gov.in/ict-initiatives |
| 2 | Indian Institute of Technology Kharagpur | Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project | https://www.iitkgp.ac.in |
| 3 | National Digital Library of India Office, Indian Institute of Technology Kharagpur | The administrative and infrastructural headquarters of the project | Dr. B. Sutradhar bsutra@ndl.gov.in |
| 4 | Project PI / Joint PI | Principal Investigator and Joint Principal Investigators of the project |
Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon |
| 5 | Website/Portal (Helpdesk) | Queries regarding NDLI and its services | support@ndl.gov.in |
| 6 | Contents and Copyright Issues | Queries related to content curation and copyright issues | content@ndl.gov.in |
| 7 | National Digital Library of India Club (NDLI Club) | Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach | clubsupport@ndl.gov.in |
| 8 | Digital Preservation Centre (DPC) | Assistance with digitizing and archiving copyright-free printed books | dpc@ndl.gov.in |
| 9 | IDR Setup or Support | Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops | idr@ndl.gov.in |
|
Loading...
|