http://www.cnr.it/ontology/cnr/individuo/prodotto/ID236412
Characterization of bep1 and bep4 antigens involved in cell interaction during Paracentrotus lividus development. (Articolo in rivista)
- Type
- Label
- Characterization of bep1 and bep4 antigens involved in cell interaction during Paracentrotus lividus development. (Articolo in rivista) (literal)
- Anno
- 1992-01-01T00:00:00+01:00 (literal)
- Alternative label
Romancino DP, Ghersi G, Montana G, Bonura A, Perriera S, Di Carlo M (1992)
Characterization of bep1 and bep4 antigens involved in cell interaction during Paracentrotus lividus development.
in Differentiation (Lond.)
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- Romancino DP, Ghersi G, Montana G, Bonura A, Perriera S, Di Carlo M (literal)
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- ISI Web of Science (WOS) (literal)
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- Titolo
- Characterization of bep1 and bep4 antigens involved in cell interaction during Paracentrotus lividus development. (literal)
- Abstract
- We have identified and partially characterised
two antigens, extracted with 3% butanol, from Paracentrotus
liuidus embryos dissociated at the blastula stage,
and encoded by the cDNA clones previously described
as bepl and bep4 (bep-butanol extracted proteins). The
cDNA fragments containing the specific central portions
of bepl and bep4 were expressed as MS2 polymerase
fusion proteins in Escherichia coli. These two fusion proteins,
called 1C1 (bepl) and 4A1 (bep4), were injected
subcutaneously into rabbits and the corresponding polyclonal
antibodies generated. Western blot analysis of
proteins, extracted with 3% butanol, from sea urchin
embryos at the blastula stage (b.e.p.), established that
both antibodies recognize two 33 KDa proteins. Reducing
and non-reducing electrophoretic conditions show
that both antibodies against bepl and bep4 related proteins
react also with a protein band of a molecular
weight 66 KDa, indicating that these two antigens probably
exist as dimers. Immunolocalization with anti 1C1
and 4A1 antibodies shows the presence of the related
antigens also on the cell surface. Fab fragments of the
polyclonal antibodies against 1C1 and 4A1 inhibited
reaggregation of sea urchin embryonic cells, dissociated
from blastula stage embryos. This prevention of reaggregation
indicates that these proteins probably play a role
in cell interaction during sea urchin embryonic development. (literal)
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