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Rabbit Anti-WASP/FITC Conjugated antibody
background:
The Wiskott-Aldrich syndrome (WAS) is a disorder that results from a monogenic defect that has been mapped to the short arm of the X chromosome. WAS is characterized by thrombocytopenia, eczema, defects in cell-mediated and humoral immunity and a propensity for lymphoproliferative disease. The gene that is mutated in the syndrome encodes a proline-rich protein of unknown function designated WAS protein (WASP). A clue to WASP function came from the observation that T cells from affected males had an irregular cellular morphology and a disarrayed cytoskeleton suggesting the involvement of WASP in cytoskeletal organization. Close examination of the WASP sequence revealed a putative Cdc42/Rac interacting domain, homologous with those found in PAK65 and ACK. Subsequent investigation has shown WASP to be a true downstream effector of Cdc42.
Function:
Effector protein for Rho-type GTPases, providing a link with the Arp2/3 complex that regulates the structure and dynamics of the actin cytoskeleton. Important for efficient actin polymerization. Possible regulator of lymphocyte and platelet function.
Subunit:
Interacts with NCK1 (via SH3 domains). Interacts with CDC42, RAC, NCK, HCK, FYN, SRC kinase FGR, BTK, ABL1, PSTPIP1, WIP, and to the p85 subunit of PLSLCgamma. Binds the Arp2/3 complex. Interacts (via SLCterminus) with ALDOA. Interacts with E.coli effector protein EspF(U).
Subcellular Location:
Cytoplasm; cytoskeleton.
Tissue Specificity:
Expressed predominantly in the thymus. Also found, to a much lesser extent, in the spleen
Post-translational modifications:
Phosphorylated at Tyr-291 by FYN and HCK, inducing WAS effector activity after TCR engagement. Phosphorylation at Tyr-291 enhances WAS activity in promoting actin polymerization and filopodia formation.
DISEASE:
Defects in WAS are the cause of Wiskott-Aldrich syndrome (WAS) [MIM:301000]; also known as eczema-thrombocytopenia-immunodeficiency syndrome.
WAS is an X-linked recessive immunodeficiency characterized by eczema, thrombocytopenia, recurrent infections, and bloody diarrhea. Death usually occurs before age 10.
Defects in WAS are the cause of thrombocytopenia type 1 (THC1) [MIM:313900].
Thrombocytopenia is defined by a decrease in the number of platelets in circulating blood, resulting in the potential for increased bleeding and decreased ability for clotting.
Defects in WAS are a cause of neutropenia severe congenital X-linked (XLN) [MIM:300299]. XLN is an immunodeficiency syndrome characterized by recurrent major bacterial infections, severe congenital neutropenia, and monocytopenia.
Similarity:
Contains 1 CRIB domain.
Contains 1 WH1 domain.
Contains 1 WH2 domain.
Database links:
Entrez Gene: 7454 Human
Entrez Gene: 22376 Mouse
Omim: 300392 Human
SwissProt: P42768 Human
SwissProt: P70315 Mouse
Unigene: 2157 Human
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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