Zobrazeno 1 - 10
of 223
pro vyhledávání: '"G. Sichel"'
Publikováno v:
Pigment Cell Research. 14:126-131
It is well known that amphibian Kupffer cells (KCs) contain eumelanins. In this paper, we demonstrate through a molecular analysis that Rana esculenta KCs synthesize high levels of mRNA for tyrosinase and through cytochemistry that they possess dopa
Publikováno v:
Journal of Anatomy. 196:249-261
A study on the Kupffer cells (KCs) of Amphibia was undertaken in order to compare these cells with those of endothermic animals. Liver tissue and isolated and cultured KCs were studied by light microscopy and by transmission and scanning electron mic
Autor:
V. Amico, A.M.C. Rapisarda, C. Di Pietro, G. Sichel, S. Motta, Hartmut Engel, A. Viola, C. Bonaiuto, Angelo Messina, Michele Purrello, A. Amato, Marina Scalia, Karl-Heinz Grzeschik
Publikováno v:
Cytogenetic and Genome Research. 89:133-136
Human SL1 is a general transcription initiation factor (GTF) essential for RNA polymerase I to start rRNA synthesis at class I promoters. It is comprised of the TATA box-binding protein (TBP) and three TBP-associated factors (TAFI48, TAFI63 and TAFI1
Autor:
Marina Scalia, G. Sichel, Michele Purrello, V. Amico, A. Amato, C. Bonaiuto, Maria Natalia Lizzio, Hartmut Engel, A.M.C. Rapisarda, Karl-Heinz Grzeschik, C. Di Pietro
Publikováno v:
Somatic Cell and Molecular Genetics. 25:185-189
By in situ chromosomal hybridization, and by somatic cell and radiation hybrid analysis, we have determined the genomic position of the human genes encoding four TAFII subunits of TFIID (TAFII150, TAFII105, TAFII68, TAFII18), the three subunits of TF
Publikováno v:
Scopus-Elsevier
This ultrastructural research was carried out to investigate the nature of the liver pigment cells of anuran and caudate amphibians, the pattern of melanosome ontogenesis, and the demolition processes of old melanosomes. We demonstrate that these liv
Autor:
G. Sichel, C. Corsaro, Michele Purrello, S. Motta, Karl-Heinz Grzeschik, C. Di Pietro, A. Viola, A.M.C. Rapisarda
Publikováno v:
Scopus-Elsevier
Dr1 is a nuclear protein of 19 kDa that exists in the nucleoplasm as a homotetramer. By binding to TBP (the DNA-binding subunit of TFIID, and also a subunit of SL1 and TFIIIB), the protein blocks class II and class III preinitiation complex assembly,
Publikováno v:
Research in Microbiology. 147:167-174
The present study sought to determine whether the pigment produced by Proteus mirabilis from the L-forms of various aromatic amino acids under aerobic conditions is melanic in nature. It is a black-brown pigment which behaves like a melanin in many r
Publikováno v:
Journal of Neurotherapy. 1:60-64
This article looks at the experience of Frankie, an autistic 8 1/2 year old boy. He was diagnosed mildly autistic by several specialists. One specialist claimed he was brain damaged and “autistic-like” and that there was no hope for improvement.
Autor:
G. Sichel, S. Motta, C. Di Pietro, Elena Mirabile, Michele Purrello, Karl-Heinz Grzeschik, A.M.C. Rapisarda
Publikováno v:
Cytogenetic and Genome Research. 69:75-80
Analysis of loci GTF2F1 and GTF2B, encoding Rap 74 (a subunit of TFIIF) and TFIIB, respectively, showed that they are present in a single copy in the human genome and are localized at 19p13.3 and 1p22, respectively. By using as probe a cDNA for Rap 3
Autor:
Rebecca Rimini, A.M.C. Rapisarda, Lorenzo Pavone, G. Sichel, Elena Mirabile, Cinzia Di Pietro, Karl-Heinz Grzeschik, S. Motta, Alessandra Tiné, Michele Purrello
Publikováno v:
Genomics. 22:94-100
The TATA box-binding protein (TBP) has a fundamental role in eukaryotic cell metabolism, since it is necessary for transcription of class I class II, and class III genes; in fact, TBP is the DNA-binding subunit of TFIID and a component of SL1 and TFI