Amassin, an olfactomedin protein, mediates the massive intercellular adhesion of sea urchin coelomocytes.
Amassin, an olfactomedin protein, mediates the massive intercellular adhesion of sea urchin coelomocytes.
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DOI:
10.1083/jcb.200210053
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发表时间:
2003-02-17
期刊:
影响因子:
--
通讯作者:
Vacquier VD
中科院分区:
文献类型:
--
作者:
Hillier BJ;Vacquier VD
Sea urchins have a fluid-filled body cavity, the coelom, containing four types of immunocytes called coelomocytes. Within minutes after coelomic fluid is removed from the body cavity, a massive cell–cell adhesion of coelomocytes occurs. This event is referred to as clotting. Clotting is thought to be a defense mechanism against loss of coelomic fluid if the body wall is punctured, and it may also function in the cellular encapsulation of foreign material and microbes. Here we show that this intercoelomocyte adhesion is mediated by amassin, a coelomic plasma protein with a relative molecular mass (M r) of 75 kD. Amassin forms large disulfide-bonded aggregates that adhere coelomocytes to each other. One half of the amassin protein comprises an olfactomedin (OLF) domain. Structural predictions show that amassin and other OLF domain-containing vertebrate proteins share a common architecture. This suggests that other proteins of the OLF family may function in intercellular adhesion. These findings are the first to demonstrate a function for a protein of the OLF family.
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DOI:
10.1073/pnas.230096397
发表时间:
2000-11-21
影响因子:
11.1
作者:
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通讯作者:
Pancer, Z
影响因子:
5.8
作者:
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通讯作者:
Barton, GJ
影响因子:
3.4
作者:
JOHNSON, PT
通讯作者:
JOHNSON, PT
影响因子:
3.2
作者:
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通讯作者:
Smith, LC
影响因子:
7.8
作者:
EDDS, KT
通讯作者:
EDDS, KT