1NI0	Hydrolase	date	Dec 20, 2002
title	Structure Of The Y94f Mutant Of The Restriction Endonuclease
authors	P.A.Tucker, M.Kokkinidis, S.Nicolaki, D.Kotsifaki
compound		source
Molecule: Type II Restriction Enzyme Pvuii Chain: A, B, C Synonym: Endonuclease Pvuii, R.Pvuii Ec: 3.1.21.4 Engineered: Yes Mutation: Yes		Organism_scientific: Proteus Vulgaris Organism_taxid: 585 Gene: Pvuiir Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_plasmid: N-A
symmetry	Space Group: P 4 21 2	R_factor 0.228 R_Free 0.290
crystal cell	length a length b length c angle alpha angle beta angle gamma 176.860 176.860 46.340 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
ligand		enzyme	Hydrolase E.C.3.1.21.4 BRENDA
related structures	by homologous chain: 1F0O, 1PVI
Gene Ontology	Chain Function Process Component A, C, B nuclease activity endonuclease activity

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (86 Kb) [Save to disk] Biological Unit Coordinates (1ni0.pdb1.gz) 55 Kb Biological Unit Coordinates (1ni0.pdb2.gz) 55 Kb CSU: Contacts of Structural Units for 1NI0 Likely Quarternary Molecular Structure file(s) for 1NI0 Structure Factors (209 Kb) Retrieve 1NI0 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NI0 from S2C, [Save to disk] Re-refined 1ni0 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NI0 in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 1NI0

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1NI0, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ni0a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1ni0b_, region B [Jmol] [rasmolscript] [script source]     - Domain d1ni0c_, region C [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1ni0_C] [1ni0_B] [1ni0] [1ni0_A] SWISS-PROT database: [P23657] Domain organization of [T2P2_PROVU] by SWISSPFAM

Other resources with information on 1NI0

Community annotation for 1NI0 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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