5_UTR |
1 |
265 |
|
|
|
5’ non coding region |
leader |
266 |
805 |
nsp1 |
YP_009725297.1 |
180 |
Inhibits host gene expression and interferon signaling (Züst et al. 2007; Narayanan et al. 2008; Kamitani et al. 2009; Narayanan et al. 2015) |
nsp2 |
806 |
2719 |
nsp2 |
YP_009725298.1 |
638 |
May assist other viral proteins in their function, interacting with several of them, but its specific function is not known yet (Prentice et al. 2004; von Brunn et al. 2007). |
nsp3 |
2720 |
8554 |
nsp3 |
YP_009725299.1 |
1945 |
Papain-like protease with phosphatase activity. Performs proteolytic cleavage of the polyproteins (Saikatendu et al. 2005). Inhibits components of NF-κB, interferon-beta and p53 signaling. It may participate in membrane rearrangements with nsp4 (Wathelet et al. 2007; Hagemeijer et al. 2014; Yuan et al. 2015) |
nsp4 |
8555 |
10054 |
nsp4 |
YP_009725300.1 |
500 |
Essential to membrane rearrangements during viral replication (Angelini et al. 2013; Sakai et al. 2017). |
3C_like_protease |
10055 |
10972 |
nsp5 |
YP_009725301.1 |
306 |
Also known as 3C-like proteinase, its main role is to cleave the viral polyprotein to generate the active forms of the nonstructural proteins (Ziebuhr et al. 2000; Anand et al. 2003; Perlman and Netland 2009) |
nsp6 |
10973 |
11842 |
nsp6 |
YP_009742613.1 |
290 |
Participates in membrane rearrangements and autophagy (Angelini et al. 2013). |
nsp7 |
11843 |
12091 |
nsp7 |
YP_009725303.1 |
83 |
Part of the replication complex (nsp7-nsp8-nsp12). It forms an hexadecameric complex with nsp8 that may act as a processivity clamp for the RNA-dependent RNA polymerase (Zhai et al. 2005; Smith and Denison 2013) |
nsp8 |
12092 |
12685 |
nsp8 |
YP_009725304.1 |
198 |
Part of the replication complex (nsp7-nsp8-nsp12). It forms an hexadecameric complex with nsp7 that may act as a processivity clamp for the RNA-dependent RNA polymerase (Zhai et al. 2005; Smith and Denison 2013) |
nsp9 |
12686 |
13024 |
nsp9 |
YP_009725305.1 |
113 |
Forms homodimers that bind and protect the viral genome from degradation during replication (Sutton et al. 2004; Ponnusamy et al. 2008). |
nsp10 |
13025 |
13441 |
nsp10 |
YP_009725306.1 |
139 |
Forms complexes with nsp14 and nsp16, which perform 3’-5’ exoribonuclease and 2'-O-methyltransferase activities, respectively (Bouvet et al. 2010; Wang et al. 2015). |
RNA_pol |
13442 |
16236 |
nsp12 |
YP_009725307.1 |
932 |
RNA-dependent RNA polymerase, the core of the replication complex (nsp7-nsp8-nsp12) (Smith and Denison 2013; Gao et al. 2020). |
helicase |
16237 |
18039 |
nsp13 |
YP_009725308.1 |
601 |
RNA helicase with NTPase, dNTPase and RTpase activities (Ivanov and Ziebuhr 2004). |
exonuclease |
18040 |
19620 |
nsp14 |
YP_009725309.1 |
527 |
3'-to-5' exonuclease with proofreading activity (Chen et al. 2007; Ma et al. 2015) |
endoRNAse |
19621 |
20658 |
nsp15 |
YP_009725310.1 |
346 |
Nidoviral RNA uridylate-specific endoribonuclease (NendoU) (Kim et al. 2020 |
methyltransferase |
20659 |
21555 |
nsp16 |
YP_009725311.1 |
298 |
2'-O-ribose methyltransferase. In association with nsp10, it is involved in capping of viral mRNA to protect it from host degradation (Decroly et al. 2011). |
5_spike |
21556 |
21562 |
|
|
|
5’ region of the spike gene |
spike |
21563 |
25384 |
S |
YP_009724390.1 |
1273 |
Spike glycoprotein. Main means of virus entry into host cells. These highly glycosylated proteins protrude from the viral surface to interact with the host cell receptor(s) (Walls et al. 2020). |
5_ORF3a |
25385 |
25392 |
|
|
|
5’ region of the ORF3a gene |
ORF3a |
25393 |
26220 |
ORF3a |
YP_009724391.1 |
275 |
Forms homotetramers with ion channel properties (Lu et al. 2006). Linked to inflammatory, IFN and innate immunity responses, it triggers apoptosis and modulates cell cycle (Kanzawa et al. 2006; Yuan et al. 2007; Padhan et al. 2008; Minakshi et al. 2009) |
5_E |
26221 |
26244 |
|
|
|
5’ region of the E gene |
E |
26245 |
26472 |
E |
YP_009724392.1 |
75 |
Envelope protein. Minor structural protein that forms pentameric ion channels in host ER membranes (Li et al. 2014). Involved in overexpression of cytokines and exaggerated immune response (X. Fang et al. 2007; Siu et al. 2009) |
5_M |
26473 |
26522 |
|
|
|
5’ region of the M gene |
M |
26523 |
27191 |
M |
YP_009724393.1 |
222 |
Membrane glycoprotein. Required for membrane curvature initiation, RNA packing, and viral particle budding (Neuman et al. 2011). |
5_ORF6 |
27192 |
27201 |
|
|
|
5’ region of the ORF6 gene |
ORF6 |
27202 |
27387 |
ORF6 |
YP_009724394.1 |
61 |
Enhances viral replication (Huang et al. 2007; Zhao et al. 2009) |
5_ORF7a |
27388 |
27393 |
|
|
|
5’ region of the ORF7 gene |
ORF7a |
27394 |
27759 |
ORF7a |
YP_009724395.1 |
121 |
Prevents virus tethering at the plasma membrane by binding to BTS-2 (Taylor et al. 2015) |
ORF7b |
27756 |
27887 |
ORF7b |
YP_009725318.1 |
43 |
Integral transmembrane protein. Its function is unclear (Pekosz et al. 2006; Schaecheret al. 2007) |
5_ORF8 |
27888 |
27893 |
|
|
|
5’ region of the ORF8 gene |
ORF8 |
27894 |
28259 |
ORF8 |
YP_009724396.1 |
121 |
Accessory protein involved in enhanced virus replication (Muth et al. 2018). |
5_N |
28260 |
28273 |
|
|
|
5’ region of the N gene |
N |
28274 |
29533 |
N |
YP_009724397.2 |
419 |
Nucleocapsid. Packages the viral RNA to form a ribonucleocapsid, playing a key role in viral assembly (Chang et al. 2009). |
5_ORF10 |
29534 |
29557 |
|
|
|
5’ region of the ORF10 gene |
ORF10 |
29558 |
29674 |
ORF10 |
YP_009725255.1 |
38 |
Accessory protein with potential role in inhibiting the ubiquitin-proteasome system (UPS) (D.E. Gordon et al. 2020a) |
5_3_UTR |
29675 |
29903 |
|
|
|
3’ non coding region |