1,721,205 research outputs found
ALIMENTI BIOCOMPATIBILI PER IL MIGLIORAMENTO DEL BENESSERE ANIMALE E DELLA QUALITA' DELLE PRODUZIONI ZOOTECNICHE
No full textStructural analysis of the gene for the beta chain of the antigen specific receptor of mammalian T-lymphocytes
No full textThe antigen specific receptor of T cells (TCR) is composed of alpha and beta chains and is normally present on the T cell surface complexed with the components which make up T3. In the case of beta chain, multiple somatic DNA rearrangements bring together V beta (variable), D beta (diversity) and J beta (joining) gene segments before a mature messenger RNA can be transcribed. So far beta chain genes have been extensively studied in the human and in the mouse system and we have very little information on other mammals. Our aims were to obtain information that may provide a structural basis for understanding developmental as well as evolutionary aspects of the TCR gene system in mammals. In this study we compare the hybridization pattern between a human cDNA probe coding for the beta chain constant region and restricted genomic DNA extracted from lymphocytes deriving from human as well as from rat and lamb. The comparison of the hybridization data represent a first piece of information about the variation of the structure of the TCR beta chain genes in mammals
Isolation and characterization of variable region of thymus T cell receptor genes in sheep
No full textL’INTEGRAZIONE CON VANADIO DELLE RAZIONI PER LE BOVINE DA LATTE. EFFETTI SULL’EFFICIENZA PRODUTTIVA E RIPRODUTTIVA
No full textL'INTEGRAZIONE CON VANADIO DELLE RAZIONI PER SUINI ALL'INGRASSO: EFFETTI SUI PROSCIUTTI STAGIONATI
No full textPreliminary results on the maternal and neonatal behaviour of the “Altamurana” thoroughbred sheep
No full textInfluence of lamb presence on the behaviour at pasture of “Altamurana” breed-population sheep
No full textCloning and cDNA sequence of the rat X-chromosome linked phosphoglycerate kinase
No full textThis paper reports the isolation and the sequence determination of rat phosphoglycerate kinase (PGK) cDNA clones. This cDNA, derived from an X-linked PGK gene transcript, contains a reading frame of 1254 nt and 5' and 3' non coding regions of 40 and 380 nt respectively. Analysis of the nucleotide sequence at the three codon position shows a biased codon usage with a prevalence of the triplet G non G N. Comparison of the inferred rat amino acid sequence with that of other organisms makes possible the calculation of the unit evolutionary period (UEP) for this enzyme, placing it at around 40 million years (My). Thus PGK is one of the oldest housekeeping enzymes
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