1DQ3

CRYSTAL STRUCTURE OF AN ARCHAEAL INTEIN-ENCODED HOMING ENDONUCLEASE PI-PFUI


ChainDomainClassArchitectureTopologyHomology
2.170.16.10 Mainly Beta Beta Complex Endonuclease - Pi-scei Chain A, domain 1
2.170.16.10 Mainly Beta Beta Complex Endonuclease - Pi-scei Chain A, domain 1
3.30.160.90 Alpha Beta 2-Layer Sandwich Double Stranded RNA Binding Domain
3.10.28.10 Alpha Beta Roll Endonuclease I-creI Homing endonucleases
3.10.28.10 Alpha Beta Roll Endonuclease I-creI Homing endonucleases

Protein Family Annotation Pfam Database Homepage

ChainsAccessionIdentifierDescriptionCommentsSource
PF02867Ribonucleotide reductase, barrel domain (Ribonuc_red_lgC)Ribonucleotide reductase, barrel domain- Family
PF14528LAGLIDADG-like domain (LAGLIDADG_3)LAGLIDADG-like domainThis domain is part of the LAGLIDADG superfamily [1].Domain
PF14890Intein splicing domain (Intein_splicing)Intein splicing domain- Family
PF09061Stirrup (Stirrup)StirrupThe Stirrup domain, found in the prokaryotic protein ribonucleotide reductase, has a molecular mass of 9 kDa and is folded into an alpha/beta structure. It allows for binding of the reductase to DNA via electrostatic interactions, since it has a pred ...The Stirrup domain, found in the prokaryotic protein ribonucleotide reductase, has a molecular mass of 9 kDa and is folded into an alpha/beta structure. It allows for binding of the reductase to DNA via electrostatic interactions, since it has a predominance of positive charges distributed on its surface [1].
Domain
PF09062PI-PfuI Endonuclease subdomain (Endonuc_subdom)PI-PfuI Endonuclease subdomainThe endonuclease subdomain, found in the prokaryotic protein ribonucleotide reductase, assumes an alpha-beta-beta-alpha-beta-beta-alpha-alpha topology. The four stranded beta-sheet forms a saddle-shaped surface and assembles together through an inter ...The endonuclease subdomain, found in the prokaryotic protein ribonucleotide reductase, assumes an alpha-beta-beta-alpha-beta-beta-alpha-alpha topology. The four stranded beta-sheet forms a saddle-shaped surface and assembles together through an interface made of alpha-helices. The presence of 14 basic residues on the surface of the beta-sheets suggests that this large groove may be involved in DNA binding [1].
Domain