1R7M	Hydrolase Dna	date	Oct 21, 2003
title	The Homing Endonuclease I-Scei Bound To Its Dna Recognition
authors	C.M.Moure, F.S.Gimble, F.A.Quiocho
compound		source
Molecule: 5'-D(Cpapcpgpcptpapgpgpgpaptpapapc Gptpapaptpapc)-3'; Chain: C, E Engineered: Yes Other_details: Dna-Top Strand		Synthetic: Yes
Molecule: 5'-D(Gpgptpaptptpapcpcpcptpgptptpa Cptpapgpcpgpt)-3'; Chain: D, F Engineered: Yes Other_details: Dna-Bottom Strand		Synthetic: Yes
Molecule: Intron-Encoded Endonuclease I-Scei Chain: A, B Synonym: 21s Rrna Intron Maturase, Homing Endonuclease Omeg Ec: 3.1.-.- Engineered: Yes		Organism_scientific: Saccharomyces Cerevisiae Organism_common: Baker'S Yeast Organism_taxid: 4932 Gene: Secy Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Er2267 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pscm525
symmetry	Space Group: P 21 21 21	R_factor 0.235 R_Free 0.267
crystal cell	length a length b length c angle alpha angle beta angle gamma 80.600 90.700 115.300 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.25 Å
ligand	CA	enzyme	Hydrolase E.C.3.1 BRENDA
note	1R7M is a representative structure
Gene Ontology	Chain Function Process Component A, B nuclease activity endonuclease activity
Primary reference	The crystal structure of the gene targeting homing endonuclease I-SceI reveals the origins of its target site specificity., Moure CM, Gimble FS, Quiocho FA, J Mol Biol 2003 Dec 5;334(4):685-95. PMID:14636596

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (122 Kb) [Save to disk] Biological Unit Coordinates (1r7m.pdb1.gz) 59 Kb Biological Unit Coordinates (1r7m.pdb2.gz) 59 Kb LPC: Ligand-Protein Contacts for 1R7M CSU: Contacts of Structural Units for 1R7M Likely Quarternary Molecular Structure file(s) for 1R7M Structure Factors (315 Kb) Retrieve 1R7M in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1R7M from S2C, [Save to disk] Re-refined 1r7m structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1R7M 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 1R7M

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 1R7M, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1r7ma2, region A:121-225 [Jmol] [rasmolscript] [script source]     - Domain d1r7ma1, region A:3-120 [Jmol] [rasmolscript] [script source]     - Domain d1r7mb1, region B:303-320 [Jmol] [rasmolscript] [script source]     - Domain d1r7mb2, region B:321-525 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1r7m_F] [1r7m_B] [1r7m_D] [1r7m_C] [1r7m_A] [1r7m] [1r7m_E] SWISS-PROT database: [P03882] Domain organization of [SCE1_YEAST] by SWISSPFAM

Other resources with information on 1R7M

Community annotation for 1R7M at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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Images from IMB Jena Image Library of Biological Macromolecules.

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