1RIO
Structure of bacteriophage lambda cI-NTD in complex with sigma-region4 of Thermus aquaticus bound to DNA
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
C [auth H] | d1rioh_ | All alpha proteins | DNA/RNA-binding 3-helical bundle | Sigma3 and sigma4 domains of RNA polymerase sigma factors | Sigma4 domain | Sigma70 (SigA, RpoD) | (Thermus aquaticus ) [TaxId: 271 ], | SCOPe (2.08) |
D [auth A] | d1rioa1 | All alpha proteins | lambda repressor-like DNA-binding domains | lambda repressor-like DNA-binding domains | Phage repressors | lambda C1 repressor, DNA-binding domain | (Lambdavirus lambda ) [TaxId: 10710 ], | SCOPe (2.08) |
D [auth A] | d1rioa2 | Artifacts | Tags | Tags | Tags | C-terminal Tags | (Lambdavirus lambda ) [TaxId: 10710 ], | SCOPe (2.08) |
E [auth B] | d1riob1 | All alpha proteins | lambda repressor-like DNA-binding domains | lambda repressor-like DNA-binding domains | Phage repressors | lambda C1 repressor, DNA-binding domain | (Lambdavirus lambda ) [TaxId: 10710 ], | SCOPe (2.08) |
E [auth B] | d1riob2 | Artifacts | Tags | Tags | Tags | C-terminal Tags | (Lambdavirus lambda ) [TaxId: 10710 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
C [auth H] | SCOP2 Family | Sigma4 domain | 8028300 | 4003503 | SCOP2 (2022-06-29) |
C [auth H] | SCOP2 Superfamily | Sigma factor domain-like | 8040679 | 3000953 | SCOP2 (2022-06-29) |
D [auth A] | SCOP2B Superfamily | lambda C1 repressor DNA-binding domain-like | 8058183 | 3000119 | SCOP2B (2022-06-29) |
E [auth B] | SCOP2B Superfamily | lambda C1 repressor DNA-binding domain-like | 8058183 | 3000119 | SCOP2B (2022-06-29) |
Domain Annotation: ECOD Classification ECOD Database Homepage
Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
C [auth H] | Sigma70_r4 | e1rioH1 | A: alpha arrays | X: HTH | H: HTH | T: tri-helical | F: Sigma70_r4 | ECOD (1.6) |
D [auth A] | HTH_3 | e1rioA1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
E [auth B] | HTH_3 | e1rioB1 | A: alpha arrays | X: HTH | H: HTH | T: tetra-helical, lambda repressor-like | F: HTH_3 | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
C [auth H] | 1.10.10.10 | Mainly Alpha | Orthogonal Bundle | Arc Repressor Mutant, subunit A | Winged helix-like DNA-binding domain superfamily/Winged helix DNA-binding domain | CATH (4.3.0) |
D [auth A] | 1.10.260.40 | Mainly Alpha | Orthogonal Bundle | 434 Repressor (Amino-terminal Domain) | lambda repressor-like DNA-binding domains | CATH (4.3.0) |
E [auth B] | 1.10.260.40 | Mainly Alpha | Orthogonal Bundle | 434 Repressor (Amino-terminal Domain) | lambda repressor-like DNA-binding domains | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
C [auth H] | PF04545 | Sigma-70, region 4 (Sigma70_r4) | Sigma-70, region 4 | Region 4 of sigma-70 like sigma-factors are involved in binding to the -35 promoter element via a helix-turn-helix motif [1]. Due to the way Pfam works, the threshold has been set artificially high to prevent overlaps with other helix-turn-helix fami ... | Domain |
D [auth A], E [auth B] | PF01381 | Helix-turn-helix (HTH_3) | Helix-turn-helix | This large family of DNA binding helix-turn helix proteins includes Cro Swiss:P03036 and CI Swiss:P03034. Within the protein Swiss:Q5F9C2, the full protein fold incorporates a helix-turn-helix motif, but the function of this member is unlikely to be ... | Domain |