LIS - Legume Information System
Information about legume traits for crop improvement
CicerMine
v5.1.0.3
Cicer data from the Legume Information System
v5.1.0.3
Cicer data from the Legume Information System
| Type | Domain |
| Description | This entry represents a macrodomain referred to as SUD-N (N-terminal subdomain) of the SARS-unique domain (SUD) which binds G-quadruplexes (unusual nucleic-acid structures formed by consecutive guanosine nucleotides). It is found in the non-structural protein 3 (NSP3) of Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV) and highly related coronaviruses [ ].SUD consists of three globular domains separated by short linker peptide segments: SUD-N, SUD-M, and SUD-C [ ]. Among these, SUD-N and SUD-M are macrodomains. The SUD-N domain is a related macrodomain which also binds G-quadruplexes []. While SUD-N is specific to the NSP3 of SARS and betacoronaviruses of the sarbecovirus subgenera (B lineage), SUD-M is present in most NSP3 proteins except the NSP3 from betacoronaviruses of the embecovirus subgenera (A lineage). SUD-M, despite its name, is not specific to SARS. SUD-C adopts a frataxin-like fold, has structural similarity to DNA-binding domains of DNA-modifying enzymes, binds single-stranded RNA, and regulates the RNA binding behavior of the SUD-M macrodomain. SARS-CoV Nsp3 contains a third macrodomain (the X-domain). The X-domain may function as a module binding poly(ADP-ribose); however, SUD-N and SUD-M do not bind ADP-ribose, as the triple glycine sequence involved in its binding is not conserved in these []. |
| Short Name | NSP3_SUD-N_SARS-CoV |
