Crystallization and preliminary X-ray analysis of two new crystal forms of calmodulin

Bernhard Rupp, Daniel R. Marshak, Sean Parkin

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27 Scopus citations


Two new crystal forms of calmodulin from Gallus gallus are reported. Crystals in space group P1 (cell dimensions a = 59.7, b = 53.1, c = 24.6 Å, α = 93.2, β = 96.7, γ = 89.2° and Z = 2), grow as long thin needles. Water content on density considerations is ∼50%. They diffract to ∼2.0Å, but give wide multiply peaked spot profiles. Crystals in space group P212121 (cell dimensions a = 32.2, b = 56.0, c = 67.3Å and Z = 4), grow as clusters of thin tablets and contain ∼30% water by volume. These small crystals (∼0.4 × 0.15 × 0.1 mm) diffracted well to ∼ 1.4Å and some appreciable intensities were observed at resolutions better than 1.2Å.

Original languageEnglish
Pages (from-to)411-413
Number of pages3
JournalActa Crystallographica Section D: Biological Crystallography
Issue number2
StatePublished - Mar 1 1996

ASJC Scopus subject areas

  • Structural Biology


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