2Q39	Transport Protein	date	May 30, 2007
title	Beta-Lactoglobulin (Low Humidity)
authors	L.Vijayalakshmi, R.Krishna, R.Sankaranarayanan, M.Vijayan
compound		source
Molecule: Beta-Lactoglobulin Chain: A, B Synonym: Beta-Lg, Allergen Bos D 5		Organism_scientific: Bos Taurus Organism_common: Cattle Organism_taxid: 9913 Variant: A Organ: Breast Tissue: Mammary Gland Other_details: Variant A Differs In A Primary Amino Acid Se From Variant B At Positions 64 (Asp-->Gly) And 118 (Val-->A
symmetry	Space Group: P 21 21 2	R_factor 0.236 R_Free 0.306
crystal cell	length a length b length c angle alpha angle beta angle gamma 63.095 80.315 56.379 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.50 Å
Gene Ontology	Chain Function Process Component A, B
Primary reference	An asymmetric dimer of beta-lactoglobulin in a low humidity crystal form-Structural changes that accompany partial dehydration and protein action., Vijayalakshmi L, Krishna R, Sankaranarayanan R, Vijayan M, Proteins. 2007 Oct 11;71(1):241-249. PMID:17932936

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (54 Kb) [Save to disk] Biological Unit Coordinates (2q39.pdb1.gz) 49 Kb CSU: Contacts of Structural Units for 2Q39 Likely Quarternary Molecular Structure file(s) for 2Q39 Structure Factors (80 Kb) Retrieve 2Q39 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2Q39 from S2C, [Save to disk] Re-refined 2q39 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2Q39 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 2Q39

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 2Q39, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2q39_B] [2q39_A] [2q39] SWISS-PROT database: [P02754] Domain organization of [LACB_BOVIN] by SWISSPFAM

Other resources with information on 2Q39

Community annotation for 2Q39 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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