1OIA	Ribonucleoprotein	date	Jun 12, 2003
title	U1a Rnp Domain 1-95
authors	K.Nagai, P.R.Evans
compound		source
Molecule: U1 Small Nuclear Ribonucleoprotein A Chain: A, B Fragment: Rnp Domain Residues 1-95 Synonym: U1 Snrnp A Protein Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: I 41 3 2	R_factor 0.192 R_Free 0.242
crystal cell	length a length b length c angle alpha angle beta angle gamma 148.125 148.125 148.125 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.4 Å
note	1OIA supersedes 1NRC
related structures	by homologous chain: 1A9N, 1M5V
Gene Ontology	Chain Function Process Component A, B nucleotide binding nucleic acid binding RNA binding protein binding snRNA binding mRNA splicing, via spliceoso... mRNA processing RNA splicing gene expression nucleus nucleoplasm spliceosomal complex ribonucleoprotein complex
Primary reference	Crystal structure of the RNA-binding domain of the U1 small nuclear ribonucleoprotein A., Nagai K, Oubridge C, Jessen TH, Li J, Evans PR, Nature 1990 Dec 6;348(6301):515-20. PMID:2147232

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (36 Kb) [Save to disk] Biological Unit Coordinates (1oia.pdb1.gz) 17 Kb Biological Unit Coordinates (1oia.pdb2.gz) 16 Kb CSU: Contacts of Structural Units for 1OIA Likely Quarternary Molecular Structure file(s) for 1OIA Structure Factors (510 Kb) Retrieve 1OIA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1OIA from S2C, [Save to disk] Re-refined 1oia structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1OIA 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. On AstexViewer, from MSD-EBI (viewer documentation). On RasMol (Install RasMol freeware) Here's help on how to use RasMol.

Visual 3D analysis of 1OIA

Cartoon representation from PDB Cartoon 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 Crystal Contacts, from CryCo at Weizmann Institute 3D motif for 1OIA, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1oiaa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1oiab_, region B [Jmol] [rasmolscript] [script source] Fold representative 1oia from FSSP and Dali (Families of Structurally Similar Proteins) 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: [1oia_A] [1oia_B] SWISS-PROT database: [P09012] Domain organization of [SNRPA_HUMAN] by SWISSPFAM Domain found in 1OIA: [RRM ] by SMART Alignments of the sequence of 1OIA with the sequences similar proteins can be viewed for 1OIA's classification [SNRPA_HUMAN] at ProtoMap. Click on "Neighbors List", then on the "See Alignments" button below the list. A sequence distance tree ("phylogenetic tree") can be viewed for 1ACL's classification [SNRPA_HUMAN] at ProtoMap. Click on the Cluster number.

Other resources with information on 1OIA

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

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