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Conserved domains on  [gi|1193830717|gb|ARR75162|]
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NS3 protease, partial [Hepatitis C virus subtype 1b]

Protein Classification

NS3 protease( domain architecture ID 10502700)

NS3 (non-structural protein 3) proease is a peptidase family S29 member; the hepatitis C virus NS3/4A protease cleaves at least 4 sites on the viral polyprotein and is essential for virus maturation, making it an attractive target for drug development

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
Peptidase_S29 pfam02907
Hepatitis C virus NS3 protease; Hepatitis C virus NS3 protein is a serine protease which has a ...
 30-178 3.04e-89

Hepatitis C virus NS3 protease; Hepatitis C virus NS3 protein is a serine protease which has a trypsin-like fold. The non-structural (NS) protein NS3 is one of the NS proteins involved in replication of the HCV genome. NS2-3 proteinase, a zinc-dependent enzyme, performs a single proteolytic cut to release the N-terminus of NS3. The action of NS3 proteinase (NS3P), which resides in the N-terminal one-third of the NS3 protein, then yields all remaining non-structural proteins. The C-terminal two-thirds of the NS3 protein contain a helicase. The functional relationship between the proteinase and helicase domains is unknown. NS3 has a structural zinc-binding site and requires cofactor NS4A.


:

Pssm-ID: 427049  Cd Length: 149  Bit Score: 259.28  E-value: 3.04e-89
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1193830717  30 EGEVQVVSTATQSFLATCINGVCWTVFHGAGSKTLAGPKGP*TQMYTNVDQDLVGWPSPPGARSLTPCTCGSSDLYLVTR 109
Cdd:pfam02907   1 EGEVQVLGTATQRFMGTCVNGVLWTTFHGAGSRTLAGPKGPVNQMYWSASDDVVGYPLPPGAGSLTPCTCGATDLYLVTR 80

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1193830717 110 HADVIPVRRRGDSRGSLLSPRPVSYLKGSSGGPLLCPSGHAVGIFRAAVCTRGVAKAVDFVPVESMETT 178
Cdd:pfam02907  81 DGDLIPGRRRGDPRVSLLSPRPLSYLKGSSGGPILCPSGHVVGMFRAAVHSGGVVKAVRFVPWETLPTT 149
DEAD-like_helicase_N super family cl28899
N-terminal helicase domain of the DEAD-box helicase superfamily; The DEAD-like helicase ...
 197-220 1.92e-04

N-terminal helicase domain of the DEAD-box helicase superfamily; The DEAD-like helicase superfamily is a diverse family of proteins involved in ATP-dependent RNA or DNA unwinding. The N-terminal domain contains the ATP-binding region.


The actual alignment was detected with superfamily member cd17931:

Pssm-ID: 475120 [Multi-domain]  Cd Length: 151  Bit Score: 40.23  E-value: 1.92e-04
                          10        20
                  ....*....|....*....|....
gi 1193830717 197 FQVAHLHAPTGSGKSTKVPAAYAA 220
Cdd:cd17931     1 GQLTVLDLHPGAGKTTRVLPQIIR 24
 
Name Accession Description Interval E-value
Peptidase_S29 pfam02907
Hepatitis C virus NS3 protease; Hepatitis C virus NS3 protein is a serine protease which has a ...
 30-178 3.04e-89

Hepatitis C virus NS3 protease; Hepatitis C virus NS3 protein is a serine protease which has a trypsin-like fold. The non-structural (NS) protein NS3 is one of the NS proteins involved in replication of the HCV genome. NS2-3 proteinase, a zinc-dependent enzyme, performs a single proteolytic cut to release the N-terminus of NS3. The action of NS3 proteinase (NS3P), which resides in the N-terminal one-third of the NS3 protein, then yields all remaining non-structural proteins. The C-terminal two-thirds of the NS3 protein contain a helicase. The functional relationship between the proteinase and helicase domains is unknown. NS3 has a structural zinc-binding site and requires cofactor NS4A.


Pssm-ID: 427049  Cd Length: 149  Bit Score: 259.28  E-value: 3.04e-89
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1193830717  30 EGEVQVVSTATQSFLATCINGVCWTVFHGAGSKTLAGPKGP*TQMYTNVDQDLVGWPSPPGARSLTPCTCGSSDLYLVTR 109
Cdd:pfam02907   1 EGEVQVLGTATQRFMGTCVNGVLWTTFHGAGSRTLAGPKGPVNQMYWSASDDVVGYPLPPGAGSLTPCTCGATDLYLVTR 80

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1193830717 110 HADVIPVRRRGDSRGSLLSPRPVSYLKGSSGGPLLCPSGHAVGIFRAAVCTRGVAKAVDFVPVESMETT 178
Cdd:pfam02907  81 DGDLIPGRRRGDPRVSLLSPRPLSYLKGSSGGPILCPSGHVVGMFRAAVHSGGVVKAVRFVPWETLPTT 149
DEXHc_viral_Ns3 cd17931
DEXH-box helicase domain of NS3 protease-helicase; NS3 is a nonstructural multifunctional ...
 197-220 1.92e-04

DEXH-box helicase domain of NS3 protease-helicase; NS3 is a nonstructural multifunctional protein found in pestiviruses that contains an N-terminal protease and a C-terminal helicase. The N-terminal domain is a chymotrypsin-like serine protease, which is responsible for most of the maturation cleavages of the polyprotein precursor in the cytosolic side of the endoplasmic reticulum membrane. The C-terminal domain, about two-thirds of NS3, is a helicase belonging to superfamily 2 (SF2) thought to be important for unwinding highly structured regions of the RNA genome during replication. NS3 plays an essential role in viral polyprotein processing and genome replication. NS3 is a member of the DEAD-like helicase superfamily, a diverse family of proteins involved in ATP-dependent RNA or DNA unwinding. This domain contains the ATP-binding region.


Pssm-ID: 350689 [Multi-domain]  Cd Length: 151  Bit Score: 40.23  E-value: 1.92e-04
                          10        20
                  ....*....|....*....|....
gi 1193830717 197 FQVAHLHAPTGSGKSTKVPAAYAA 220
Cdd:cd17931     1 GQLTVLDLHPGAGKTTRVLPQIIR 24
 
Name Accession Description Interval E-value
Peptidase_S29 pfam02907
Hepatitis C virus NS3 protease; Hepatitis C virus NS3 protein is a serine protease which has a ...
 30-178 3.04e-89

Hepatitis C virus NS3 protease; Hepatitis C virus NS3 protein is a serine protease which has a trypsin-like fold. The non-structural (NS) protein NS3 is one of the NS proteins involved in replication of the HCV genome. NS2-3 proteinase, a zinc-dependent enzyme, performs a single proteolytic cut to release the N-terminus of NS3. The action of NS3 proteinase (NS3P), which resides in the N-terminal one-third of the NS3 protein, then yields all remaining non-structural proteins. The C-terminal two-thirds of the NS3 protein contain a helicase. The functional relationship between the proteinase and helicase domains is unknown. NS3 has a structural zinc-binding site and requires cofactor NS4A.


Pssm-ID: 427049  Cd Length: 149  Bit Score: 259.28  E-value: 3.04e-89
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1193830717  30 EGEVQVVSTATQSFLATCINGVCWTVFHGAGSKTLAGPKGP*TQMYTNVDQDLVGWPSPPGARSLTPCTCGSSDLYLVTR 109
Cdd:pfam02907   1 EGEVQVLGTATQRFMGTCVNGVLWTTFHGAGSRTLAGPKGPVNQMYWSASDDVVGYPLPPGAGSLTPCTCGATDLYLVTR 80

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1193830717 110 HADVIPVRRRGDSRGSLLSPRPVSYLKGSSGGPLLCPSGHAVGIFRAAVCTRGVAKAVDFVPVESMETT 178
Cdd:pfam02907  81 DGDLIPGRRRGDPRVSLLSPRPLSYLKGSSGGPILCPSGHVVGMFRAAVHSGGVVKAVRFVPWETLPTT 149
DEXHc_viral_Ns3 cd17931
DEXH-box helicase domain of NS3 protease-helicase; NS3 is a nonstructural multifunctional ...
 197-220 1.92e-04

DEXH-box helicase domain of NS3 protease-helicase; NS3 is a nonstructural multifunctional protein found in pestiviruses that contains an N-terminal protease and a C-terminal helicase. The N-terminal domain is a chymotrypsin-like serine protease, which is responsible for most of the maturation cleavages of the polyprotein precursor in the cytosolic side of the endoplasmic reticulum membrane. The C-terminal domain, about two-thirds of NS3, is a helicase belonging to superfamily 2 (SF2) thought to be important for unwinding highly structured regions of the RNA genome during replication. NS3 plays an essential role in viral polyprotein processing and genome replication. NS3 is a member of the DEAD-like helicase superfamily, a diverse family of proteins involved in ATP-dependent RNA or DNA unwinding. This domain contains the ATP-binding region.


Pssm-ID: 350689 [Multi-domain]  Cd Length: 151  Bit Score: 40.23  E-value: 1.92e-04
                          10        20
                  ....*....|....*....|....
gi 1193830717 197 FQVAHLHAPTGSGKSTKVPAAYAA 220
Cdd:cd17931     1 GQLTVLDLHPGAGKTTRVLPQIIR 24
 
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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