1AR2	Immunoglobulin	date	Aug 08, 1997
title	Disulfide-Free Immunoglobulin Fragment
authors	I.Uson, M.T.Bes, G.M.Sheldrick, T.R.Schneider, T.Hartsch, H.J.Fr
compound		source
Molecule: Rei Chain: A Fragment: Variable Region, Light Chain Synonym: Ig Kappa Chain V-I Region Engineered: Yes Mutation: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 61 2 2	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 52.800 52.800 158.200 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.80 Å
related structures	by homologous chain: 1QLR, 2HMI
Gene Ontology	Chain Function Process Component A
Primary reference	X-ray crystallography reveals stringent conservation of protein fold after removal of the only disulfide bridge from a stabilized immunoglobulin variable domain., Uson I, Bes MT, Sheldrick GM, Schneider TR, Hartsch T, Fritz HJ, Fold Des 1997;2(6):357-61. PMID:9427009

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (21 Kb) [Save to disk] Biological Unit Coordinates (1ar2.pdb1.gz) 34 Kb CSU: Contacts of Structural Units for 1AR2 Likely Quarternary Molecular Structure file(s) for 1AR2 Structure Factors (62 Kb) Retrieve 1AR2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1AR2 from S2C, [Save to disk] Re-refined 1ar2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1AR2 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 1AR2

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 1AR2, from MSDmotif at EBI Genome occurence of 1AR2's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ar2__, region [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: [1ar2_A] [1ar2] SWISS-PROT database: [P01607] Domain organization of [KV115_HUMAN] by SWISSPFAM Domain found in 1AR2: [IGv ] by SMART

Other resources with information on 1AR2

Community annotation for 1AR2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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