Ursula Egner

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By ultrastructural immunohistochemistry using the immunogold technique, immunoreactive (ir) Chromogranin A (CGA) was found to be confined to the secretory vesicles of porcine Merkel cells. CGA was present predominantly in the periphery of the electron-dense core and on the clear halo. These findings indicate that CGA is a regular constituent of Merkel cell(More)
PTEN/MMAC1, a tumour suppressor gene located on chromosome 10q23.3, has been found to be deleted in several types of human malignancies. As the chromosomal region 10q22-qter commonly is affected by losses in melanomas, we addressed this gene as tumour suppressor candidate in melanomas. Investigating PTEN/MMAC1 expression at mRNA level by semi-quantitative(More)
The two crystal structures of thrombin complexed with its most potent natural inhibitor hirudin and with the active-site inhibitor D-Phe-Pro-Arg-CH2Cl [Rydel, T.J. et al., J. Mol. Biol., 221 (1991) 583; Bode, W. et al., EMBO J., 8 (1989) 3467] were used as a basis to design a new inhibitor, combining the high specificity of the polypeptide hirudin with the(More)
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