Biomedical subjects

K W Törnroos

Publications and source records attributed to K W Törnroos.

3 recordsLinked to original sources

PubMed2001

Chlorotris(N,N'-dicyclohexylthiourea-S)tellurium(II) chloride, a tellurium complex with a TeClS3 coordination sphere.

During the synthesis of a series of square-planar [TeCl2(stu)2] complexes, where stu represents bulky di- or tetrasubstituted thioureas, the title compound, [TeCl[(C6H11NH)2CS]3]Cl or C39H72ClN6S3Te+*Cl-, was the unexpected result when stu was N,N'-dicyclohexylthiourea. The complex is square planar, with Te-S distances of 2.5803 (4), 2.6211 (4) and 2.8214 (4) A, and a Te-Cl distance of 2.6485 (4) A, indicating a small trans influence of the thiourea ligand.

Journal Article↗

PubMed2001

3,3'-Selenobis(propionic acid).

In contrast to Se[CH(2)C(O)OH](2) versus S[CH(2)C(O)OH](2), the title compound, Se[CH(2)CH(2)C(O)OH](2) or C(6)H(10)O(4)Se, is structurally quite similar to its sulfur analogue. The molecule has twofold symmetry. The C-Se-C bond angle is 96.48 (8) degrees and the Se-C bond lengths are 1.9610 (14) A. The shortest Se.O intermolecular distance is 3.5410 (11) A. The O.O distances in the carboxylic acid dimers are 2.684 (2) A. The temperature dependence of the IR spectrum suggests tautomerism in the solid state.

Journal Article↗

PubMed1988

Crystallization and preliminary investigation of single crystals of deoxyuridine triphosphate nucleotidohydrolase from Escherichia coli.

Deoxyuridine triphosphate nucleotidohydrolase (dUTPase), an enzyme in the nucleotide metabolism that is a pyrophosphatase hydrolyzing dUTP, has been crystallized. The crystals belong to the trigonal space group R3 and diffract beyond 2 A. The native dUTPase crystals and a mercury derivative are stable in the X-ray beam and are suitable for a high resolution X-ray structure analysis.

Amino Acid Sequence↗