title: Expression, purification, crystallization and preliminary X-ray crystallographic analysis of a resuscitation-promoting factor from Mycobacterium tuberculosis.
abstract: The resuscitation-promoting factor RpfB, the most complex of the five resuscitation-promoting factors produced by M. tuberculosis, is devoted to bacterial reactivation from the dormant state. RpfB consists of 362 residues predicted to form five domains. An RpfB fragment containing the protein catalytic domain and a G5 domain has been successfully crystallized using vapour-diffusion methods. This is the first crystallographic study of a resuscitation-promoting factor. Crystals of this protein belong to space group I422, with unit-cell parameters a = 97.63, b = 97.63, c = 114.87 A. Diffraction data have also been collected from a selenomethionine derivative at 2.9 A resolution. Model building using the phases derived from the multiwavelength anomalous dispersion experiment is in progress.
authors.affiliation: Institute of Biostructures and Bioimaging, CNR, Via Mezzocannone 16, I-80134 Napoli, Italy.
authors.forename: Alessia
authors.initials: A
authors.lastname: Ruggiero
authors.forename: Barbara
authors.initials: B
authors.lastname: Tizzano
authors.forename: Arie
authors.initials: A
authors.lastname: Geerlof
authors.forename: Emilia
authors.initials: E
authors.lastname: Pedone
authors.forename: Carlo
authors.initials: C
authors.lastname: Pedone
authors.forename: Matthias
authors.initials: M
authors.lastname: Wilmanns
authors.forename: Rita
authors.initials: R
authors.lastname: Berisio
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins / Q000096:biosynthesis* / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D003460:Crystallization; D018360:Crystallography, X-Ray; D016207:Cytokines / Q000096:biosynthesis* / Q000737:chemistry* / Q000235:genetics / Q000302:isolation & purification; D015964:Gene Expression Regulation, Bacterial / Q000502:physiology*; D008969:Molecular Sequence Data; D009169:Mycobacterium tuberculosis / Q000235:genetics / Q000378:metabolism*
chemical_list: D001426:Bacterial Proteins; D016207:Cytokines; C113704:resuscitation-promoting factor, bacteria