In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates
The emergence of multidrug resistance tuberculosis (MDR-TB) is caused by the adaptation of Mycobacterium tuberculosis to survive in the presence of antibiotic, which is also contributed by mutations in the MDR-associated genes. Previous studies showed that the knockdown of fhaA gene expression led t...
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| Format: | Thesis |
| Language: | English |
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2023
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| Online Access: | http://eprints.usm.my/60358/ http://eprints.usm.my/60358/1/TEH%20HUI%20WEN%20-%20TESIS%20cut.pdf |
| _version_ | 1848884424753545216 |
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| author | Teh, Hui Wen |
| author_facet | Teh, Hui Wen |
| author_sort | Teh, Hui Wen |
| building | USM Institutional Repository |
| collection | Online Access |
| description | The emergence of multidrug resistance tuberculosis (MDR-TB) is caused by the adaptation of Mycobacterium tuberculosis to survive in the presence of antibiotic, which is also contributed by mutations in the MDR-associated genes. Previous studies showed that the knockdown of fhaA gene expression led to peptidoglycan (PG) precursors the accumulating at the bacillary septum and poles, this indicates a probable defect in PG biosynthesis. As a result, the cell wall becomes impermeable to antibiotic, causing MDR. In this study, bioinformatics analyses were performed on MDR-TB isolates from 24 clinical samples to search for novel mutations that contribute to antibiotic resistance. We found out a potential deletion of nucleotides encoding 6 amino acids in 13 samples, in fhaA gene (RV0020c). Subsequent structural analysis shows that the deletion is located at the locus position 243-248, located near the N-terminal of the FHAA protein. Since FHAA protein has a function by binding to MviN protein, it regulates cell growth and peptidoglycan synthesis, we postulated that the deletion will potentially cause the loss of its binding affinity to MviN, resulting in the inhibition and blockage of the peptidoglycan polymerization, causing MDR in MTB. Similarly, another 6 amino acid deletion was also detected for hbhA gene (Rv0475) in 12/14 drug resistant samples. HBHA protein has a function of inducing aggregation in mycobacterial. |
| first_indexed | 2025-11-15T19:06:29Z |
| format | Thesis |
| id | usm-60358 |
| institution | Universiti Sains Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T19:06:29Z |
| publishDate | 2023 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | usm-603582024-04-05T07:36:37Z http://eprints.usm.my/60358/ In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates Teh, Hui Wen R5-920 Medicine (General) The emergence of multidrug resistance tuberculosis (MDR-TB) is caused by the adaptation of Mycobacterium tuberculosis to survive in the presence of antibiotic, which is also contributed by mutations in the MDR-associated genes. Previous studies showed that the knockdown of fhaA gene expression led to peptidoglycan (PG) precursors the accumulating at the bacillary septum and poles, this indicates a probable defect in PG biosynthesis. As a result, the cell wall becomes impermeable to antibiotic, causing MDR. In this study, bioinformatics analyses were performed on MDR-TB isolates from 24 clinical samples to search for novel mutations that contribute to antibiotic resistance. We found out a potential deletion of nucleotides encoding 6 amino acids in 13 samples, in fhaA gene (RV0020c). Subsequent structural analysis shows that the deletion is located at the locus position 243-248, located near the N-terminal of the FHAA protein. Since FHAA protein has a function by binding to MviN protein, it regulates cell growth and peptidoglycan synthesis, we postulated that the deletion will potentially cause the loss of its binding affinity to MviN, resulting in the inhibition and blockage of the peptidoglycan polymerization, causing MDR in MTB. Similarly, another 6 amino acid deletion was also detected for hbhA gene (Rv0475) in 12/14 drug resistant samples. HBHA protein has a function of inducing aggregation in mycobacterial. 2023-02 Thesis NonPeerReviewed application/pdf en http://eprints.usm.my/60358/1/TEH%20HUI%20WEN%20-%20TESIS%20cut.pdf Teh, Hui Wen (2023) In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates. Masters thesis, Universiti Sains Malaysia. |
| spellingShingle | R5-920 Medicine (General) Teh, Hui Wen In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates |
| title | In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates |
| title_full | In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates |
| title_fullStr | In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates |
| title_full_unstemmed | In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates |
| title_short | In Silico Screening For The Identification And Characterization Of Potential Mutations That Confer To Antibiotic Resistance In Malaysian Mdr-Tb Isolates |
| title_sort | in silico screening for the identification and characterization of potential mutations that confer to antibiotic resistance in malaysian mdr-tb isolates |
| topic | R5-920 Medicine (General) |
| url | http://eprints.usm.my/60358/ http://eprints.usm.my/60358/1/TEH%20HUI%20WEN%20-%20TESIS%20cut.pdf |