1FR2
CRYSTAL STRUCTURE OF THE E9 DNASE DOMAIN WITH A MUTANT IMMUNITY PROTEIN IM9(E41A)
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | d1fr2a_ | All alpha proteins | Acyl carrier protein-like | Colicin E immunity proteins | Colicin E immunity proteins | ImmE9 protein (Im9) | (Escherichia coli ) [TaxId: 562 ], | SCOPe (2.08) |
B | d1fr2b_ | Alpha and beta proteins (a+b) | His-Me finger endonucleases | His-Me finger endonucleases | HNH-motif | DNase domain of colicin E9 | (Escherichia coli ) [TaxId: 562 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Domain Annotation: ECOD Classification ECOD Database Homepage
Chains | Family Name | Domain Identifier | Architecture | Possible Homology | Homology | Topology | Family | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
A | Colicin_Pyocin | e1fr2A1 | A: alpha bundles | X: ACP-like | H: Colicin E immunity proteins (From Topology) | T: Colicin E immunity proteins | F: Colicin_Pyocin | ECOD (1.6) |
B | LHH | e1fr2B1 | A: few secondary structure elements | X: His-Me finger endonucleases (From Homology) | H: His-Me finger endonucleases | T: His-Me finger endonucleases | F: LHH | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
A | 1.10.1200.20 | Mainly Alpha | Orthogonal Bundle | Non-ribosomal Peptide Synthetase Peptidyl Carrier Protein | Chain A | CATH (4.3.0) |
B | 3.90.540.10 | Alpha Beta | Alpha-Beta Complex | Colicin E7 immunity protein | Chain B, fragment: Endonuclease domain | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
PF01320 | Colicin immunity protein / pyocin immunity protein (Colicin_Pyocin) | Colicin immunity protein / pyocin immunity protein | - | Domain | |
PF21431 | Colicin/Pyocin-S2, DNase domain (Col-Pyo_DNase) | Colicin/Pyocin-S2, DNase domain | This entry represents the DNAse domain from colicin/pyocin bacteriocins, such as pyocin-S2 from Pseudomonas aeruginosa and colicin E7/E9 from E. coli. This domain has an alpha/beta fold containing a Zn2+ ion binding site [1-5]. | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
InterPro: Protein Family Classification InterPro Database Homepage
Chains | Accession | Name | Type |
---|---|---|---|
IPR000290 | Colicin immunity protein/pyocin immunity protein | Family | |
IPR035900 | Colicin E immunity protein superfamily | Homologous Superfamily | |
IPR024575 | Cloacin/colicin | Family | |
IPR016128 | Pyosin/cloacin translocation domain | Domain | |
IPR044925 | His-Me finger superfamily | Homologous Superfamily | |
IPR024566 | Colicin, receptor domain | Domain | |
IPR036302 | Pyosin/cloacin translocation domain superfamily | Homologous Superfamily | |
IPR037146 | Colicin/pyocin, DNase domain superfamily | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
Chains | Enzyme Name | Description | Catalytic Residues |
---|---|---|---|
colicin-E9 M-CSA #791 | Colicin E9 from Escherichia coli is a non-specific endonuclease. This extracellular toxin is secreted by strains of Escherichia coli to kill competing bacteria. It kills the cell by enzymatic cleavage of nucleic acids once it has entered the cell. Since colicin E9 is non-specific, it can hydrolyse both single and double stranded DNA. | Defined by 7 residues: ARG:B-5ARG:B-96GLU:B-100HIS:B-102HIS:B-103HIS:B-127HIS:B-131 | EC: 3.1.21.1 (PDB Primary Data) |