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Conserved domains on  [gi|1820616061|ref|YP_009725318|]
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ORF7b [Severe acute respiratory syndrome coronavirus 2]

Protein Classification

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
ORF7b_SARS-CoV-2 cd21623
Structural accessory protein ORF7b of Severe Acute Respiratory Syndrome coronavirus 2 and ...
1-43 3.98e-09

Structural accessory protein ORF7b of Severe Acute Respiratory Syndrome coronavirus 2 and similar proteins; This group contains the ORF7b, also called NS7b, of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), also known as 2019-nCoV, and a bat coronavirus (BatCoV RaTG13), which was previously detected in Rhinolophus affinis from China's Yunnan province and showed high sequence identity to SARS-CoV-2. ORF7b/NS7b from betacoronavirus in the B lineage are not related to NS7b proteins from other betacoronavirus lineages. There are five essential genes in CoVs that result in the following gene products: Spike (S) protein, Membrane (M) glycoprotein, Nucleocapsid (N), Envelope (E) protein, and the ORF1ab (a large polyprotein known as replicase/protease); all required to produce a structurally complete viral particle. In addition, SARS coronavirus contains a number of open reading frames that code for a total of eight accessory proteins, namely ORFs 3a, 3b, 6, 7a, 7b, 8a, 8b, and 9b. These ORFs are specific for SARS-CoV and do not show significant homology to accessory proteins of other coronaviruses. The SARS-CoV ORF7b protein is a highly hydrophobic 43 amino acid protein which is homologous to an accessory but structural component of SARS-CoV virion. While ORF7b is packaged into virions, it is not required for the virus budding process, as gene 7 deletion viruses replicate efficiently in vitro and in vivo. Moreover, ORF7b possesses a transmembrane helical domain (TMD), between 9-29 amino acid residues, is necessary for its Golgi complex localization, as replacing it with the TMD from the human endoprotease furin results in aberrant localization.


:

Pssm-ID: 394938  Cd Length: 43  Bit Score: 45.70  E-value: 3.98e-09
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|...
gi 1820616061  1 MIELSLIDFYLCFLAFLLFLVLIMLIIFWFSLELQDHNETCHA 43
Cdd:cd21623    1 MIELSLIDFYLCFLAFLLFLVLIMLIIFWFSLELQDHNETCHA 43
 
Name Accession Description Interval E-value
ORF7b_SARS-CoV-2 cd21623
Structural accessory protein ORF7b of Severe Acute Respiratory Syndrome coronavirus 2 and ...
1-43 3.98e-09

Structural accessory protein ORF7b of Severe Acute Respiratory Syndrome coronavirus 2 and similar proteins; This group contains the ORF7b, also called NS7b, of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), also known as 2019-nCoV, and a bat coronavirus (BatCoV RaTG13), which was previously detected in Rhinolophus affinis from China's Yunnan province and showed high sequence identity to SARS-CoV-2. ORF7b/NS7b from betacoronavirus in the B lineage are not related to NS7b proteins from other betacoronavirus lineages. There are five essential genes in CoVs that result in the following gene products: Spike (S) protein, Membrane (M) glycoprotein, Nucleocapsid (N), Envelope (E) protein, and the ORF1ab (a large polyprotein known as replicase/protease); all required to produce a structurally complete viral particle. In addition, SARS coronavirus contains a number of open reading frames that code for a total of eight accessory proteins, namely ORFs 3a, 3b, 6, 7a, 7b, 8a, 8b, and 9b. These ORFs are specific for SARS-CoV and do not show significant homology to accessory proteins of other coronaviruses. The SARS-CoV ORF7b protein is a highly hydrophobic 43 amino acid protein which is homologous to an accessory but structural component of SARS-CoV virion. While ORF7b is packaged into virions, it is not required for the virus budding process, as gene 7 deletion viruses replicate efficiently in vitro and in vivo. Moreover, ORF7b possesses a transmembrane helical domain (TMD), between 9-29 amino acid residues, is necessary for its Golgi complex localization, as replacing it with the TMD from the human endoprotease furin results in aberrant localization.


Pssm-ID: 394938  Cd Length: 43  Bit Score: 45.70  E-value: 3.98e-09
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|...
gi 1820616061  1 MIELSLIDFYLCFLAFLLFLVLIMLIIFWFSLELQDHNETCHA 43
Cdd:cd21623    1 MIELSLIDFYLCFLAFLLFLVLIMLIIFWFSLELQDHNETCHA 43
 
Name Accession Description Interval E-value
ORF7b_SARS-CoV-2 cd21623
Structural accessory protein ORF7b of Severe Acute Respiratory Syndrome coronavirus 2 and ...
1-43 3.98e-09

Structural accessory protein ORF7b of Severe Acute Respiratory Syndrome coronavirus 2 and similar proteins; This group contains the ORF7b, also called NS7b, of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), also known as 2019-nCoV, and a bat coronavirus (BatCoV RaTG13), which was previously detected in Rhinolophus affinis from China's Yunnan province and showed high sequence identity to SARS-CoV-2. ORF7b/NS7b from betacoronavirus in the B lineage are not related to NS7b proteins from other betacoronavirus lineages. There are five essential genes in CoVs that result in the following gene products: Spike (S) protein, Membrane (M) glycoprotein, Nucleocapsid (N), Envelope (E) protein, and the ORF1ab (a large polyprotein known as replicase/protease); all required to produce a structurally complete viral particle. In addition, SARS coronavirus contains a number of open reading frames that code for a total of eight accessory proteins, namely ORFs 3a, 3b, 6, 7a, 7b, 8a, 8b, and 9b. These ORFs are specific for SARS-CoV and do not show significant homology to accessory proteins of other coronaviruses. The SARS-CoV ORF7b protein is a highly hydrophobic 43 amino acid protein which is homologous to an accessory but structural component of SARS-CoV virion. While ORF7b is packaged into virions, it is not required for the virus budding process, as gene 7 deletion viruses replicate efficiently in vitro and in vivo. Moreover, ORF7b possesses a transmembrane helical domain (TMD), between 9-29 amino acid residues, is necessary for its Golgi complex localization, as replacing it with the TMD from the human endoprotease furin results in aberrant localization.


Pssm-ID: 394938  Cd Length: 43  Bit Score: 45.70  E-value: 3.98e-09
                         10        20        30        40
                 ....*....|....*....|....*....|....*....|...
gi 1820616061  1 MIELSLIDFYLCFLAFLLFLVLIMLIIFWFSLELQDHNETCHA 43
Cdd:cd21623    1 MIELSLIDFYLCFLAFLLFLVLIMLIIFWFSLELQDHNETCHA 43
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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