HA1 (ARHGAP45) Rabbit Polyclonal Antibody

Specifications

Product Data
Applications	IHC
Recommend Dilution	IHC: 10-50 Positive control: Human breast cancer Predicted cell location: Cytoplasm
Reactivity	Human
Host	Rabbit
Clonality	Polyclonal
Immunogen	Synthetic peptide of human ARHGAP45
Formulation	pH7.4 PBS, 0.05% NaN3, 40% Glycerol
Concentration	lot specific
Purification	Antigen affinity purification
Conjugation	Unconjugated
Storage Condition	Store at -20°C.
Gene Name	histocompatibility (minor) HA-1
Database Link	Entrez Gene 23526 Human UniProt ID Q92619
Background	Contains a GTPase activator for the Rho-type GTPases (RhoGAP) domain that would be able to negatively regulate the actin cytoskeleton as well as cell spreading. However, also contains N-terminally a BAR-domin which is able to play an autoinhibitory effect on this RhoGAP activity. Precursor of the histocompatibility antigen HA-1. More generally, minor histocompatibility antigens (mHags) refer to immunogenic peptide which, when complexed with MHC, can generate an immune response after recognition by specific T-cells. The peptides are derived from polymorphic intracellular proteins, which are cleaved by normal pathways of antigen processing. The binding of these peptides to MHC class I or class II molecules and its expression on the cell surface can stimulate T-cell responses and thereby trigger graft rejection or graft-versus-host disease (GVHD) after hematopoietic stem cell transplantation from HLA-identical sibling donor. GVHD is a frequent complication after bone marrow transplantation (BMT), due to mismatch of minor histocompatibility antigen in HLA-matched sibling marrow transplants. Specifically, mismatching for mHag HA-1 which is recognized as immunodominant, is shown to be associated with the development of severe GVHD after HLA-identical BMT. HA-1 is presented to the cell surface by MHC class I HLA-A*0201, but also by other HLA-A alleles. This complex specifically elicits donor-cytotoxic T-lymphocyte (CTL) reactivity against hematologic malignancies after treatment by HLA-identical allogenic BMT. It induces cell recognition and lysis by CTL.
Synonyms	HA-1; HLA-HA1; KIAA0223
Reference Data

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