birefringent protein crystals
protein structures can be elucidated using X-ray diffraction data from protein crystals
recent structure:
GAPR-1 complex (4AIW)
GAPR-1n complex with lipid-binding inhibitor I6P
Schouten et al. Interaction of GAPR-1 with lipid bilayers is regulated by alternative homodimerization (2012) Biochimica et Biophysica Acta (BBA) - Biomembranes 1818: 2175–2183
Human complement factor B (2OK5)
|
Factor B |
Milder et al. Factor B structure provides insights into activation of the central protease of the complement system (2007) Nat.Struct.Mol.Biol. 14: 224-228
Complement component C2a (2I6Q and 2I6S)
|
C2a |
Milder et al. Structure of complement component c2a: implications for convertase formation and substrate binding (2006) Structure 14: 1587-1597
Glutathione S-transferase (1M0U)
|
GST-2 |
Agianian et al. Structure of a Drosophila Sigma Class Glutathione S-transferase Reveals a Novel Active Site Topography Suited for Lipid Peroxidation Products (2003) J.Mol.Biol. 326: 151-16
Phosphatidylinositol transfer protein alpha (1KCM)
|
PITP-alpha |
|
closed and open conformation of the PITP protein |
Wirtz et al. Phosphatidylinositol transfer proteins: From closed for transport to open for exchange (2006) Advances in enzyme regulation, 46, 301-311.
crystallographic dimer
Van Tiel et al. The structure of phosphatidylinositol transfer protein alpha reveals sites for phospholipid binding and membrane association with major implications for its function (2002) FEBS letters, 531, 69-73.
Schouten et al. Structure of apo-phosphatidylinositol transfer protein alpha provides insight into membrane association (2002) EMBO J. 21: 2117-2121
play video above: switching between the open and closed structures of PITP
Leech-antiplatelet protein (1I8N)
|
rLAPP |
Huizinga et al. The structure of leech anti-platelet protein, an inhibitor of haemostasis (2001) Acta Crystallogr.,Sect.D 57: 1071-1078
Beta2 glycoprotein I (1QUB)
|
B2GP-I |
Bouma et al. Adhesion mechanism of human beta(2)-glycoprotein I to phospholipids based on its crystal structure (1999) EMBO J. 18: 5166-5174
L-amino acid methyl esters
X-ray structure of L-Serine methylester hydrochloride
Schouten et al. L-Serine methyl ester hydrochloride (2009) Acta Cryst. E65, o3026 (IUCr VM2012)
Lutz et al. L-Alanine methyl ester hydrochloride monohydrate (2011) Acta Cryst. E67, o586 (IUCr EZ2229)
Study of microgravity crystal growth
A new upside-down geometry is proposed to achieve the beneficial effects of microgravity crystal growth by making use of buoyant forces instead of compensating for them.
Poodt et al. Simple geometry for diffusion limited protein crystal growth: harnessing gravity to suppress convection (2009) Crystal Growth & Design, 9, 885-888
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