1B94	Hydrolase Dna	date	Feb 19, 1999
title	Restriction Endonuclease Ecorv With Calcium
authors	M.P.Thomas, S.E.Halford, R.L.Brady
compound		source
Molecule: Dna (5'-D(Apapapgpaptpaptpcptpt)-3') Chain: C, D Engineered: Yes		Synthetic: Yes
Molecule: Restriction Endonuclease Ecorv Chain: A, B Ec: 3.1.21.4 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Cellular_location: Cytoplasm Gene: Ecorvr Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pbskrv
symmetry	Space Group: P 1	R_factor 0.206 R_Free 0.270
crystal cell	length a length b length c angle alpha angle beta angle gamma 48.640 49.370 63.890 96.94 108.66 107.53
method	X-Ray Diffraction	resolution	1.90 Å
ligand	CA	enzyme	Hydrolase E.C.3.1.21.4 BRENDA
related structures	by homologous chain: 1EO4, 1SUZ
Gene Ontology	Chain Function Process Component A, B nuclease activity endonuclease activity
Primary reference	Structural analysis of a mutational hot-spot in the EcoRV restriction endonuclease: a catalytic role for a main chain carbonyl group., Thomas MP, Brady RL, Halford SE, Sessions RB, Baldwin GS, Nucleic Acids Res 1999 Sep 1;27(17):3438-45. PMID:10446231

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (101 Kb) [Save to disk] Biological Unit Coordinates (1b94.pdb1.gz) 96 Kb LPC: Ligand-Protein Contacts for 1B94 CSU: Contacts of Structural Units for 1B94 Likely Quarternary Molecular Structure file(s) for 1B94 Structure Factors (371 Kb) Retrieve 1B94 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1B94 from S2C, [Save to disk] Re-refined 1b94 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1B94 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 1B94

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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 1B94, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1b94a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1b94b_, region B [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: [1b94_A] [1b94_D] [1b94] [1b94_B] [1b94_C] SWISS-PROT database: [P04390] Domain organization of [T2E5_ECOLX] by SWISSPFAM

Other resources with information on 1B94

Community annotation for 1B94 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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