Nano-scale morphology of melanosomes revealed by small-angle X-ray scattering.

Autor: Thomas Gorniak, Tamas Haraszti, Vasyl M Garamus, Andreas R Buck, Tobias Senkbeil, Marius Priebe, Adam Hedberg-Buenz, Demelza Koehn, Tim Salditt, Michael Grunze, Michael G Anderson, Axel Rosenhahn

Publikováno v: PLoS ONE, Vol 9, Iss 3, p e90884 (2014)

Melanosomes are highly specialized organelles that produce and store the pigment melanin, thereby fulfilling essential functions within their host organism. Besides having obvious cosmetic consequences--determining the color of skin, hair and the iri

Externí odkaz: https://doaj.org/article/9d41b8b23b8743a59940677eca1541b0

Support and challenges to the melanosomal casing model based on nanoscale distribution of metals within iris melanosomes detected by X-ray fluorescence analysis

Autor: Thomas Gorniak, Heikki Suhonen, Michael Grunze, Demelza Koehn, Tamás Haraszti, Yang Yang, Ruth Heine, Michael G. Anderson, Axel Rosenhahn, Adam Hedberg-Buenz

Publikováno v: Pigment Cell & Melanoma Research

Melanin within melanosomes exists as eumelanin or pheomelanin. Distributions of these melanins have been studied extensively within tissues, but less often within individual melanosomes. Here, we apply X-ray fluorescence analysis with synchrotron rad

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b37e9a5457a88240f7141eb552ed5aa
https://doi.org/10.1111/pcmr.12278

Digital in-line X-ray holography with zone plates

Autor: Florian Staier, Thomas Nisius, Michael Grunze, Thomas Wilhein, Stefan Rehbein, Christof Christophis, R. Heine, Thomas Gorniak, Axel Rosenhahn, Michala E. Pettitt

Publikováno v: Ultramicroscopy

Single pulse imaging with radiation provided by free-electron laser sources is a promising approach towards X-ray microscopy, which is expected to provide high resolution images of biological samples unaffected by radiation damage. One fully coherent

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2a8da19d5d0216757fde54a9e7db41ef
https://doi.org/10.1016/j.ultramic.2011.02.002

Nano-scale morphology of melanosomes revealed by small-angle X-ray scattering

Autor: Vasyl M. Garamus, Michael G. Anderson, Demelza Koehn, Axel Rosenhahn, Tobias Senkbeil, Tim Salditt, Adam Hedberg-Buenz, Andreas R. Buck, Thomas Gorniak, Michael Grunze, Marius Priebe, Tamás Haraszti

Publikováno v: PLoS ONE, Vol 9, Iss 3, p e90884 (2014)
PLoS one 9(3), e90884 (2014). doi:10.1371/journal.pone.0090884
PLoS One
PLoS one, 9 (3), e90884
Gorniak, T.; Haraszti, T.; Haramus, V.M.; Buck, A.R.; Senkbeil, T.; Priebe, M.; Hedberg-Buenz, A.; Salditt, T.; Grunze, M.; Anderson, M.G.; Rosenhahn, A.: Nano-Scale Morphology of Melanosomes Revealed by Small-Angle X-Ray Scattering. In: PLoS One. Vol. 9 (2014) 3, e90884. (DOI: 10.1371/journal.pone.0090884)
PLoS ONE

Melanosomes are highly specialized organelles that produce and store the pigment melanin, thereby fulfilling essential functions within their host organism. Besides having obvious cosmetic consequences – determining the color of skin, hair and the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0e08bc64c467d77e29f36acdd8dc8b51
http://europepmc.org/articles/PMC3951238?pdf=render

Chemical contrast in soft x-ray ptychography

Autor: Axel Rosenhahn, Tim Salditt, Sophie-Charlotte Gleber, M. Beckers, Tobias Senkbeil, Klaus Giewekemeyer, Thomas Gorniak, Michael Reese

Publikováno v: Physical review letters. 107(20)

The unique strengths of x-ray microscopy are high penetration depth and near-edge resonances that provide chemical information. We use ptychography, a coherent diffractive imaging technique that disposes of the requirement for isolated specimens, and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ff3f0faf6813f35da762e288e8cc0823
https://pubmed.ncbi.nlm.nih.gov/22181778