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Isolation and characterization of sea star factor.

Abstract：

:Sea star factor (SSF) harvested from the echinoderm Asterias forbesi celomocytes is a potent inhibitor of the primary immune response to T-dependent antigens and also suppresses concanavalin-A-induced mitogenesis. We have isolated and purified a basic protein from this source which has a molecular weight of approximately 38, 000 daltons and is responsible for these biological activities. After complete reduction, SSF was shown to be composed of a single pair of heavy and light chains. Preincubation of spleen cells with concanavalin A does not inhibit binding of SSF; however, specific binding can be inhibited by preincubation with unlabeled SSF. These data suggest that the binding site for SSF is not the same as that for concanavalin A.

journal_name

Scand J Immunol

journal_title

Scandinavian journal of immunology

authors

Prendergast RA,Liu SH

doi

10.1111/j.1365-3083.1976.tb03037.x

subject

Has Abstract

pub_date

1976-01-01 00:00:00

pages

873-80

issue

6-7

eissn

0300-9475

issn

1365-3083

journal_volume

5

pub_type

杂志文章

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