2XXA	Protein Transport	date	Nov 09, 2010
title	The Crystal Structure Of The Signal Recognition Particle (Sr Complex With Its Receptor(Sr)
authors	S.F.Ataide, N.Schmitz, K.Shen, A.Ke, S.Shan, J.A.Doudna, N.Ban
compound		source
Molecule: Signal Recognition Particle Protein Chain: A, C Fragment: Residues 1-433 Synonym: Fifty-Four Homolog, P48 Ec: 3.6.5.4 Engineered: Yes Mutation: Yes		Organism_scientific: Escherichia Coli K-12 Organism_taxid: 83333 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_variant: Plyss Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet15b
Molecule: Srp Receptor Ftsy Chain: B, D Fragment: Residues 196-497 Engineered: Yes		Organism_scientific: Escherichia Coli K-12 Organism_taxid: 83333 Expression_system: Escherichia Coli Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_variant: Plyss Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet15b
Molecule: 4.5s Rna Chain: F, G Fragment: Residues 1-106 Engineered: Yes		Synthetic: Yes Organism_scientific: Deinococcus Radiodurans Organism_taxid: 1299
symmetry	Space Group: P 21 21 21	R_factor 0.232 R_Free 0.267
crystal cell	length a length b length c angle alpha angle beta angle gamma 84.100 131.040 266.040 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	3.94 Å
ligand	GCP, MG	enzyme	Hydrolase E.C.3.6.5.4 BRENDA
Gene Ontology	Chain Function Process Component A, C D, B
Primary reference	The crystal structure of the signal recognition particle in complex with its receptor., Ataide SF, Schmitz N, Shen K, Ke A, Shan SO, Doudna JA, Ban N, Science. 2011 Feb 18;331(6019):881-6. PMID:21330537

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (646 Kb) [Save to disk] Biological Unit Coordinates (2xxa.pdb1.gz) 320 Kb Biological Unit Coordinates (2xxa.pdb2.gz) 320 Kb LPC: Ligand-Protein Contacts for 2XXA CSU: Contacts of Structural Units for 2XXA Structure Factors (200 Kb) Retrieve 2XXA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2XXA from S2C, [Save to disk] Re-refined 2xxa structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2XXA 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 2XXA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 2XXA, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2xxa_C] [2xxa_G] [2xxa] [2xxa_D] [2xxa_F] [2xxa_B] [2xxa_A] SWISS-PROT database: Domain organization of by SWISSPFAM Domains found in 2XXA: [AAA] [SRP54] [SRP54_N ] by SMART

Other resources with information on 2XXA

Community annotation for 2XXA at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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