INTRON ENCODED HOMING ENDONUCLEASE I-PPOI/DNA COMPLEX LACKING CATALYTIC METAL ION
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
| Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
|---|---|---|---|---|---|---|---|---|
| D [auth B] | d1cz0b_ | Alpha and beta proteins (a+b) | His-Me finger endonucleases | His-Me finger endonucleases | Intron-encoded homing endonucleases | Intron-encoded homing endonuclease I-PpoI | (Badhamia polycephala ) [TaxId: 5791 ], | SCOPe (2.08) |
| C [auth A] | d1cz0a_ | Alpha and beta proteins (a+b) | His-Me finger endonucleases | His-Me finger endonucleases | Intron-encoded homing endonucleases | Intron-encoded homing endonuclease I-PpoI | (Badhamia polycephala ) [TaxId: 5791 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
| Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
|---|---|---|---|---|---|
| D [auth B] | SCOP2B Superfamily | His-Me finger endonucleases | 8034097 | 3001893 | SCOP2B (2022-06-29) |
| C [auth A] | SCOP2B Superfamily | His-Me finger endonucleases | 8034097 | 3001893 | 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) |
|---|---|---|---|---|---|---|---|---|
| D [auth B] | zf-His_Me_endon_like | e1cz0B1 | A: few secondary structure elements | X: His-Me finger endonucleases (From Homology) | H: His-Me finger endonucleases | T: His-Me finger endonucleases | F: zf-His_Me_endon_like | ECOD (1.6) |
| C [auth A] | zf-His_Me_endon_like | e1cz0A1 | A: few secondary structure elements | X: His-Me finger endonucleases (From Homology) | H: His-Me finger endonucleases | T: His-Me finger endonucleases | F: zf-His_Me_endon_like | ECOD (1.6) |
Domain Annotation: CATH CATH Database Homepage
| Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
|---|---|---|---|---|---|---|
| D [auth B] | 3.90.75.10 | Alpha Beta | Alpha-Beta Complex | Homing Intron 3 (I-Ppo) Encoded Endonuclease | Chain A | CATH (4.2.0) |
| C [auth A] | 3.90.75.10 | Alpha Beta | Alpha-Beta Complex | Homing Intron 3 (I-Ppo) Encoded Endonuclease | Chain A | CATH (4.2.0) |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
| Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
|---|---|---|---|---|
| C [auth A], D [auth B] | INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI | - | ||
| A [auth C], B [auth D] | DNA (5'-D(*TP*TP*GP*AP*CP*TP*CP*TP*CP*TP*TP*AP*AP*GP*AP*GP*AP*GP*TP*CP*A)-3') | - | - | - |
InterPro: Protein Family Classification InterPro Database Homepage
| Chains | Accession | Name | Type |
|---|---|---|---|
| C [auth A], D [auth B] | IPR008704 | Zinc-binding loop region of homing endonuclease | Domain |
| C [auth A], D [auth B] | IPR044930 | Homing endonuclease, His-Me finger superfamily | Homologous Superfamily |
| C [auth A], D [auth B] | IPR044925 | His-Me finger superfamily | Homologous Superfamily |
Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage
| Chains | Enzyme Name | Description | Catalytic Residues |
|---|---|---|---|
| intron-encoded endonuclease I-PpoI M-CSA #837 | I-PpoI is a homing endonuclease of the His-Cys family. It is encoded by the nuclear 26S rRNA gene of Physarum polycephalum and cleaves a 16bp homing site to generate four-base 3' overhangs. It requires divalent metal cations, but a wide range are accommodated. | Defined by 4 residues: ARG:C-60 [auth A-61]HIS:C-97 [auth A-98]CYS:C-104 [auth A-105]ASN:C-118 [auth A-119] | EC: 3.1 (PDB Primary Data) |
