1CZ0
INTRON ENCODED HOMING ENDONUCLEASE I-PPOI/DNA COMPLEX LACKING CATALYTIC METAL ION
External Resource: Annotation
Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage
Chains | Domain Info | Class | Fold | Superfamily | Family | Domain | Species | Provenance Source (Version) |
---|---|---|---|---|---|---|---|---|
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 | (Physarum polycephalum ) [TaxId: 5791 ], | SCOPe (2.08) |
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 | (Physarum polycephalum ) [TaxId: 5791 ], | SCOPe (2.08) |
Domain Annotation: SCOP2 Classification SCOP2 Database Homepage
Chains | Type | Family Name | Domain Identifier | Family Identifier | Provenance Source (Version) |
---|---|---|---|---|---|
C [auth A] | SCOP2B Superfamily | His-Me finger endonucleases | 8034097 | 3001893 | SCOP2B (2022-06-29) |
D [auth B] | 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) |
---|---|---|---|---|---|---|---|---|
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) |
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) |
Domain Annotation: CATH CATH Database Homepage
Chain | Domain | Class | Architecture | Topology | Homology | Provenance Source (Version) |
---|---|---|---|---|---|---|
C [auth A] | 3.90.75.10 | Alpha Beta | Alpha-Beta Complex | Homing Intron 3 (I-Ppo) Encoded Endonuclease | Chain A | CATH (4.3.0) |
D [auth B] | 3.90.75.10 | Alpha Beta | Alpha-Beta Complex | Homing Intron 3 (I-Ppo) Encoded Endonuclease | Chain A | CATH (4.3.0) |
Protein Family Annotation Pfam Database Homepage
Chains | Accession | Name | Description | Comments | Source |
---|---|---|---|---|---|
C [auth A], D [auth B] | PF05551 | Zinc-binding loop region of homing endonuclease (zf-His_Me_endon) | Zinc-binding loop region of homing endonuclease | This domain [1] is the short zinc-binding loops region of a number of much longer chain homing endonucleases. Such loops are probably stabilised by the zinc and may be viewed as small but separate domains. The common structural feature of these domai ... | Domain |
Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage
Chains | Polymer | Molecular Function | Biological Process | Cellular Component |
---|---|---|---|---|
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') | - | - | - |
C [auth A], D [auth B] | INTRON-ENCODED HOMING ENDONUCLEASE I-PPOI | - |
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) |