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Deprecated: Implicit conversion from float 209.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 J+Gen+Virol 2020 ; 101 (10): 1085-1089 Nephropedia Template TP
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A putative new SARS-CoV protein, 3c, encoded in an ORF overlapping ORF3a #MMPMID32667280
Firth AE
J Gen Virol 2020[Oct]; 101 (10): 1085-1089 PMID32667280show ga
Identification of the full complement of genes in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a crucial step towards gaining a fuller understanding of its molecular biology. However, short and/or overlapping genes can be difficult to detect using conventional computational approaches, whereas high-throughput experimental approaches - such as ribosome profiling - cannot distinguish translation of functional peptides from regulatory translation or translational noise. By studying regions showing enhanced conservation at synonymous sites in alignments of SARS-CoV-2 and related viruses (subgenus Sarbecovirus) and correlating the results with the conserved presence of an open reading frame (ORF) and a plausible translation mechanism, a putative new gene - ORF3c - was identified. ORF3c overlaps ORF3a in an alternative reading frame. A recently published ribosome profiling study confirmed that ORF3c is indeed translated during infection. ORF3c is conserved across the subgenus Sarbecovirus, and encodes a 40-41 amino acid predicted transmembrane protein.
|Amino Acid Sequence/genetics[MESH]
|Betacoronavirus/*genetics[MESH]
|COVID-19[MESH]
|Coronavirus Infections/virology[MESH]
|Genes, Overlapping/*genetics[MESH]
|Humans[MESH]
|Pandemics[MESH]
|Phylogeny[MESH]
|Pneumonia, Viral/virology[MESH]
|Reading Frames/*genetics[MESH]
|SARS-CoV-2[MESH]
|Sequence Alignment[MESH]
|Viral Regulatory and Accessory Proteins/genetics[MESH]