issue contents

Journal logoSTRUCTURAL
BIOLOGY
ISSN: 2059-7983

April 2004 issue

Highlighted illustration

Cover illustration: This birefringence orientation image, produced using the Metripol imaging system, illustrates the symmetry of the alignment of the acicular crystals around the centre of a lysozyme spherulite (p. 696).

research papers


link to html
Individual line defects, inclusions and other microdefects were observed in the phase-contrast X-ray diffraction images of a tetragonal lysozyme crystal which had a 4 4 0 rocking-curve width of ∼16.7 arcsec. It was revealed that dehydration led to a significant change in the microstructures and a nearly threefold increase in the width of the 4 4 0 rocking curve.

link to html
The phase transition of a triclinic lysozyme crystal was measured by X-ray diffraction and the structure of the transformed crystal was determined at 1.1 Å resolution.

link to html
This paper reports the crystal structure of the response regulator Spo0F in complex with manganese and explores the differing possibilities for the involvement of manganese and magnesium in the phosphoryl transfer.

link to html
Structural data are reported for the first examples of the tetrahydroquinazoline antifolate (6R,6S)-2,4-diamino-6-(1-­indolinomethyl)-5,6,7,8-tetrahydroquinazoline and its trimethoxy analogue (6R,6S)-2,4-diamino-6-(3′,4′,5′-trimethoxybenzyl)-5,6,7,8-tetrahydroquinazoline as inhibitor complexes with dihydrofolate reductase (DHFR) from human (hDHFR) and Pneumocystis carinii (pcDHFR) sources.

link to html
The crystal structure of the γδ T-cell ligand T10 was determined by molecular replacement using data from highly pseudo-merohedrally twinned monoclinic crystals that display pseudo-translation and non-crystallographic symmetry. The detection and treatment of twinning in T10 crystals and an analysis of the effect of the twinning on refinement is presented. A search of the PDB revealed several cases where possible twinning in monoclinic crystals may have gone unnoticed.

link to html
The crystal structures of two lectins from the roots of pokeweed (P. americana) have been solved by molecular replacement. Structural features are observed in the relative arrangement of the carbohydrate-binding sites and the C-terminal regions.

link to html
A new crystal form of translin, an octameric human DNA/RNA-binding protein, has been solved at 2.2 Å resolution.

link to html
A new structure of the duplex d(CGCAATTGCG)2 is presented. It contains Co2+ and diffracts to 1.6 Å. The results obtained are compared with four structures of the same duplex previously reported. The central hexamer sequence CAATTG has a practically constant conformation under all conditions, whereas the terminal base pairs differ in each case.

link to html
The structure of the 115-amino-acid residue protein DsvC was determined by a combination of long-wavelength sulfur phasing and radiation-damage-induced phasing.

link to html
An automated birefringence technique for assessing the content of crystallization droplets, in particular precipitates, is described and discussed.

crystallization papers


link to html
Glycolipid-transfer protein (GLTP) is a 24 kDa basic cytosolic protein that facilitates the transfer of glycolipids between bilayer membranes in vitro, but its in vivo function is unknown. Here, the crystallization and preliminary X-ray analysis of bovine GLTP are reported for the first time.

link to html
The anti-malaria vaccine candidate Pvs25 forms crystals that diffract to 2.3 Å and several complete data sets have been collected. The reductive methylation of lysine residues markedly improved the diffraction quality of the crystals.


link to html
The human oncoprotein SET/TAF-1β has been crystallized by the sitting-drop method. A complete diffraction data set was collected to 2.8 Å resolution using synchrotron radiation.

link to html
Hyperthermostable NAD-dependent glutamate dehydrogenase from Pb. islandicum has been crystallized. The crystals diffract to a maximum resolution of 2.8 Å.

link to html
The common edible mushroom (A. bisporus) lectin has been crystallized in a form suitable for X-ray diffraction studies. The crystals diffract to 2.2 Å resolution.

link to html
Galectins are lectins involved in cell adhesion and growth regulation in animal cells. Cgl-1 and Cgl-2 of the fungus C. cinereus are the first family members from outside the animal kingdom. The gene design, expression, purification and crystallization of these two prototype galectins are described.

link to html
The hatching enzyme of medaka fish, high choriolytic enzyme has been crystallized by the hanging-drop vapour-diffusion method using PEG 10 000 as the precipitant.

link to html
KaiB and Cys-substituted KaiB mutants from the thermophilic cyanobacterium T. elongatus BP-1 have been expressed as GST-fusion proteins in Escherichia coli, purified and crystallized.

link to html
A human homologue of plant pathogenesis-related protein, which is specifically localized to the Golgi membranes, has been crystallized and crystals that diffract to 1.5 Å resolution are reported.

link to html
A conserved hypothetical protein from the hyperthermophilic crenarchaeon P. aerophilum has been expressed, purified and crystallized. Two methionine residues have been introduced by mutagenesis in order to provide SeMet-substituted crystals for MAD phasing.

link to html
Oligoribonuclease (Orn), an essential 3′-to-5′ exoribonuclease which degrades small oligoribonucleotides, has been crystallized under three different conditions.

link to html
The DH/PH tandem of PDZ-RhoGEF and C-­terminally truncated RhoA have been overexpressed in Escherichia coli as TEV protease-cleavable fusion proteins containing GST and a hexahistidine tag at the N-termini, respectively. The nucleotide-free DH/PH–RhoA complex was purified by gel filtration and crystallized.

link to html
The NAD(H)-binding domain of the membrane protein transhydrogenase from E. coli has been crystallized. Crystals diffract to 1.9 Å resolution.


link to html
Type III polyketide synthase PKS18 from M. tuberculosis has been crystallized in order to understand its unusual starter molecule specificity.

link to html
Rap1GAP, the founding member of a family of GTPase-activating proteins for the small GTPase Rap1, has been overexpressed, purified and crystallized. Data collection from native crystals is reported.

link to html
The major cold-shock proteins of Bacillus subtilis and Bacillus caldolyticus are small oligonucleotide/oligosaccharide-binding fold proteins that have been described as binding single-stranded nucleic acids. Here they have been crystallized in the presence of the deoxyhexanucleotide (dT)6.

link to html
The crystallization and preliminary X-ray analysis of a soluble form of the lytic transglycosylase MltA that lacks the membrane anchor is presented.

link to html
Two crystal forms of 2-keto-3-deoxygluconate kinase from T. thermophilus have been obtained and characterized by X-ray diffraction.

link to html
Single crystals of the catalytic domain of death-associated protein kinase and its complexes with two inhibitor molecules have been prepared using the sitting-drop vapour-diffusion method. Both inhibitor molecules were clearly identified in the resulting difference Fourier map.

link to html
Crystals of asparagine synthetase A from the archaea P. abyssi, an enzyme structurally related to asparaginyl-tRNA synthetase, were grown by vapour diffusion; they belong to space groups C2 and P21 and diffract to 2.3 and 3.0 Å, respectively.

link to html
Y75N mutant M. pusillus pepsin has been cocrystallized with human renin inhibitor and the crystals have been analysed.

link to html
Acyl carrier protein synthase from S. aureus was crystallized in two crystal forms. Complete data sets were collected to resolutions of 1.65 and 1.8 Å, respectively.

link to html
The tRNA pseudouridine synthase TruD from E. coli has been overexpressed, purified and crystallized. The orthorhombic crystals diffract to 2.4 Å resolution using synchrotron radiation.

link to html
Recombinant M. tuberculosis thioredoxin reductase has been expressed, purified and crystallized. Diffraction data were collected to 3 Å resolution and preliminary X-ray diffraction analysis is described.

link to html
Wild-type and mutant (C59R+S108N) dihydrofolate reductase–thymidylate synthase (PfDHFR-TS) enzymes from P. falciparum complexed with NADPH, dUMP and either Pyr39 or Pyr30, pyrimethamine derivatives which retain binding affinities to the mutant enzyme, have been crystallized using the microbatch method. A preliminary study on the use of baby oil in microbatch crystallization is also discussed.

link to html
Co-crystallization of the third KH domain of human hnRNP K with a 15-mer ssDNA gave rod-shaped crystals belonging to the trigonal space group P3121 (unit-cell parameters a = 54.0, c = 149.7 Å) and diffracting to 2.4 Å resolution.

link to html
The purification, crystallization and X-ray diffraction analysis of NNA7, an anti-blood group Fab fragment, are described along with initial phasing information.

short communications


link to html
The crystal structure of bovine carbonic anhydrase II (BCA II) has been determined at 1.95 Å resolution by molecular replacement.

link to html
Perturbing protein structural models in the direction of their lowest-frequency normal modes can make them favourable templates for difficult molecular-replacement problems.

addenda and errata




Follow Acta Cryst. D
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds