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Crystallization of a Mos1 transposase-inverted-repeat DNA complex: biochemical and preliminary crystallographic analyses.

ABSTRACT: A complex formed between Mos1 transposase and its inverted-repeat DNA has been crystallized. The crystals diffract to 3.25 A resolution and exhibit monoclinic (P2(1)) symmetry, with unit-cell parameters a = 120.8, b = 85.1, c = 131.6 A, beta = 99.3 degrees . The X-ray diffraction data display noncrystallographic twofold symmetry and characteristic dsDNA diffraction at approximately 3.3 A. Biochemical analyses confirmed the presence of DNA and full-length protein in the crystals. The relationship between the axis of noncrystallographic symmetry, the unit-cell axes and the DNA diffraction pattern are discussed. The data are consistent with the previously proposed model of the paired-ends complex containing a dimer of the transposase.

SUBMITTER: Richardson JM

PROVIDER: S-EPMC2335011 | biostudies-literature | 2007 May

REPOSITORIES: biostudies-literature

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Crystallization of a Mos1 transposase-inverted-repeat DNA complex: biochemical and preliminary crystallographic analyses.

Richardson Julia M JM Finnegan David J DJ Walkinshaw Malcolm D MD

Acta crystallographica. Section F, Structural biology and crystallization communications 20070420 Pt 5

A complex formed between Mos1 transposase and its inverted-repeat DNA has been crystallized. The crystals diffract to 3.25 A resolution and exhibit monoclinic (P2(1)) symmetry, with unit-cell parameters a = 120.8, b = 85.1, c = 131.6 A, beta = 99.3 degrees . The X-ray diffraction data display noncrystallographic twofold symmetry and characteristic dsDNA diffraction at approximately 3.3 A. Biochemical analyses confirmed the presence of DNA and full-length protein in the crystals. The relationship ...[more]

PMID: 17565190

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