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Purification, crystallization, X-ray diffraction analysis and phasing of an engineered single-chain PvuII restriction endonuclease.

ABSTRACT: The restriction endonuclease PvuII from Proteus vulgaris has been converted from its wild-type homodimeric form into the enzymatically active single-chain variant scPvuII by tandemly joining the two subunits through the peptide linker Gly-Ser-Gly-Gly. scPvuII, which is suitable for the development of programmed restriction endonucleases for highly specific DNA cleavage, was purified and crystallized. The crystals diffract to a resolution of 2.35 A and belong to space group P4(2), with unit-cell parameters a = b = 101.92, c = 100.28 A and two molecules per asymmetric unit. Phasing was successfully performed by molecular replacement.

SUBMITTER: Meramveliotaki C

PROVIDER: S-EPMC2339719 | biostudies-literature | 2007 Oct

REPOSITORIES: biostudies-literature

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Purification, crystallization, X-ray diffraction analysis and phasing of an engineered single-chain PvuII restriction endonuclease.

Meramveliotaki Chrysi C Kotsifaki Dina D Androulaki Maria M Hountas Athanasios A Eliopoulos Elias E Kokkinidis Michael M

Acta crystallographica. Section F, Structural biology and crystallization communications 20070919 Pt 10

The restriction endonuclease PvuII from Proteus vulgaris has been converted from its wild-type homodimeric form into the enzymatically active single-chain variant scPvuII by tandemly joining the two subunits through the peptide linker Gly-Ser-Gly-Gly. scPvuII, which is suitable for the development of programmed restriction endonucleases for highly specific DNA cleavage, was purified and crystallized. The crystals diffract to a resolution of 2.35 A and belong to space group P4(2), with unit-cell ...[more]

PMID: 17909283

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