Mutation detail:
| Mutation site | T135I |
| Virus | SARS-CoV-2 |
Mutation level  |
Amino acid level |
| Gene/protein/region type | N |
| Gene ID | 43740575 |
| Country | - |
| Mutation type |
nonsynonymous mutation |
| Genotype/subtype/clade | - |
| Sample |
Human |
| Variants | Beta |
| Viral reference sequence | NC_045512.2 |
| Drug/antibody/vaccine | - |
| Transmissibility |
- |
| Transmission mechanism | - |
| Pathogenicity |
- |
| Pathogenicity mechanism | - |
| Immune escape mutation | - |
| Immune escape mechanism | - |
| RT-PCR primers probes | - |
Protein detail:
| Protein name | Nucleocapsid Phosphoprotein |
| Uniprot protein ID | P0DTC9 |
| Protein length | 419 amino acids |
| Protein description | The Nucleocapsid Phosphoprotein has a modular organization which can be divided into intrinsically disordered regions (IDRs) and conserved structural regions according to the sequence characteristics. The IDRs include three modules: N-arm, central Ser/Arg-rich flexible linker region (LKR), and C-tail, while the conserved structural regions including two modules: N-terminal domain (NTD) and C-terminal domain (CTD). In the primary structure, NTD and CTD are connected by LKR and are usually flanked by N-arm and C-tail. The nucleocapsid phosphoprotein is a structural protein that binds to, protects the viral RNA genome and is involved in packaging the RNA into virus particles. The N protein has been suggested as an antiviral drug target. |
Literature information:
| Pubmed ID | 34758391 |
| Clinical information | No |
| Disease | - |
| Published year | 2022 |
| Journal | INTERNATIONAL JOURNAL OF INFECTIOUS DISEASES |
| Title | SARS-CoV-2 variants with T135I nucleocapsid mutations may affect antigen test performance |
| Author | Ming-Jr Jian, Hsing-Yi Chung, Chih-Kai Chang, Jung-Chung Lin, Kuo-Ming Yeh |
| Evidence | The T135I mutation was also identified in one variant case in which the rapid antigen test and RT-PCR test were discordantly negative and positive, respectively. These findings suggest that the variants undetected by the Panbio COVID-19 rapid antigen test may be due to the T135I mutation in the N protein, posing a potential diagnostic risk for commercially available antigen tests. |