1ZZN	Structural Protein Rna	date	Jun 14, 2005
title	Crystal Structure Of A Group I Introntwo Exon Complex That All Catalytic Metal Ion Ligands.
authors	M.R.Stahley, S.A.Strobel
compound		source
Molecule: 197-Mer Chain: B Engineered: Yes Other_details: Group I Intron		Synthetic: Yes Other_details: Rna Was Is Transcribed By T7 Rna Polymerase. From Azoarcus Group I Intron;
Molecule: 5'-R(Apapgpcpcpapcpapcpapapapcpcpa Gpgpcpc)-3'; Chain: C Engineered: Yes Other_details: Group I Intron, 3'-Exon		Synthetic: Yes Other_details: Solid Phase Sythesis. Sequence From Azoarcus And Exon Sequence.;
Molecule: 5'-R(Cpap(5mu))-3' Chain: D Engineered: Yes Other_details: 5'-Exon, U-1deoxy5mu		Synthetic: Yes Other_details: Solid Phase Synthesis. Sequence From Azoarcu Intron 5'-Exon Sequence.;
Molecule: U1 Small Nuclear Ribonucleoprotein A Rna Binding Chain: A Fragment: Rrm 1 Synonym: U1 Snrnp Protein A, U1a Protein, U1-A Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Snrpa Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet11
symmetry	Space Group: P 41 2 2	R_factor 0.269 R_Free 0.307
crystal cell	length a length b length c angle alpha angle beta angle gamma 108.466 108.466 246.400 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	3.37 Å
ligand	5MU, A23, GTP, K, MG	enzyme
Gene Ontology	Chain Function Process Component A
Primary reference	Structural evidence for a two-metal-ion mechanism of group I intron splicing., Stahley MR, Strobel SA, Science 2005 Sep 2;309(5740):1587-90. PMID:16141079

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (119 Kb) [Save to disk] Biological Unit Coordinates (1zzn.pdb1.gz) 112 Kb LPC: Ligand-Protein Contacts for 1ZZN CSU: Contacts of Structural Units for 1ZZN Likely Quarternary Molecular Structure file(s) for 1ZZN Structure Factors (172 Kb) Retrieve 1ZZN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1ZZN from S2C, [Save to disk] Re-refined 1zzn structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1ZZN 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 1ZZN

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 1ZZN, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1zzn_C] [1zzn_A] [1zzn] [1zzn_B] [1zzn_D] SWISS-PROT database: [P09012] Domain organization of [SNRPA_HUMAN] by SWISSPFAM Domain found in 1ZZN: [RRM ] by SMART

Other resources with information on 1ZZN

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

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