Rabbit KRIT1 Polyclonal Antibody | anti-KRIT1 antibody

KRIT1 Antibody

Cat. Num. AAA9629225

• Gene Names: KRIT1; CAM; CCM1
• Reactivity: Human, Mouse, Rat
• Applications: ELISA
• Purity: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin (Thermo Fisher Scientific).
• Synonyms: KRIT1; Polyclonal Antibody; KRIT1 Antibody; Ankyrin repeat containing protein Krit1; CAM; CCM 1; CCM1; Cerebral cavernous malformations 1; Cerebral cavernous malformations 1 protein; Krev interaction trapped 1; Krev interaction trapped protein 1; KRIT 1; KRIT1 ankyrin repeat containing; KRIT1_HUMAN; anti-KRIT1 antibody

• Host: Rabbit
• Reactivity: Human, Mouse, Rat
• Clonality: Polyclonal
• Isotype: Rabbit IgG
• Specificity: KRIT1 Antibody detects endogenous levels of total KRIT1.
• Purity/Purification: The antiserum was purified by peptide affinity chromatography using SulfoLink Coupling Resin (Thermo Fisher Scientific).
• Form/Format: Liquid. Rabbit IgG in phosphate buffered saline, pH7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol.
• Concentration: 1mg/ml (varies by lot)

• Applicable Applications for anti-KRIT1 antibody: ELISA (EIA)(peptide)
• Application Notes: ELISA(peptide): 1:20000-1:40000
• Immunogen: A synthesized peptide derived from Human MYOCD.
• Conjugation: Unconjugated
• Similarity: The FERM domain mediates binding to RAP1A and RAP1B and is necessary for binding to phosphatidylinositol 4, 5-bisphosphate (PIP2). The N-terminal domain has structural similarity to the nudix hydrolase domain, despite the absence of a nudix box and low sequence similarity with nudix hydrolase domains. The N-terminus and the C-terminus part associate together via the NPAY binding motif and adopt a lose conformation that is disrupted by ITGB1BP1, but not by RAP1A. Contains 4 ANK repeats that precede the FERM domain.
• Subunit Structure: Interacts with CDH5. Found in a complex, at least composed of ITGB1BP1, KRIT1 and RAP1A. Interacts (via C-terminus FERM domain) with RAP1A (active GTP-bound form preferentially); the interaction does not induce the opening conformation of KRIT1. Interacts (via FERM domain) with RAP1B. Interacts (via N-terminus NPXY motif) with ITGB1BP1; the interaction induces the opening conformation of KRIT1 and competes with ITGB1 for ITGB1BP1 interaction. Interacts with HEG1 and CCM2; greatly facilitates CCM2-binding to HEG1. Associates (via N-terminus and C-terminus regions) with microtubules; the interaction is inhibited in presence of ITGB1BP1 and active GTP-bound RAP1A.
• Tissue Specificity: Low levels in brain. Very weak expression found in heart and muscle.
• Function: Component of the CCM signaling pathway which is a crucial regulator of heart and vessel formation and integrity (By similarity). Negative regulator of angiogenesis. Inhibits endothelial proliferation, apoptosis, migration, lumen formation and sprouting angiogenesis in primary endothelial cells. Promotes AKT phosphorylation in a NOTCH-dependent and independent manner, and inhibits ERK1/2 phosphorylation indirectly through activation of the DELTA-NOTCH cascade. Acts in concert with CDH5 to establish and maintain correct endothelial cell polarity and vascular lumen and these effects are mediated by recruitment and activation of the Par polarity complex and RAP1B. Required for the localization of phosphorylated PRKCZ, PARD3, TIAM1 and RAP1B to the cell junction, and cell junction stabilization. Plays a role in integrin signaling via its interaction with ITGB1BP1; this prevents the interaction between ITGB1 and ITGB1BP1. Microtubule-associated protein that binds to phosphatidylinositol 4, 5-bisphosphate (PIP2)-containing membranes in a GTP-bound RAP1-dependent manner. Plays an important role in the maintenance of the intracellular reactive oxygen species (ROS) homeostasis to prevent oxidative cellular damage. Regulates the homeostasis of intracellular ROS through an antioxidant pathway involving FOXO1 and SOD2. Facilitates the down-regulation of cyclin-D1 (CCND1) levels required for cell transition from proliferative growth to quiescence by preventing the accumulation of intracellular ROS through the modulation of FOXO1 and SOD2 levels.
• Note: KRIT1 and CDH5 reciprocally regulate their localization to endothelial cell-cell junctions. Association with RAP1 relocalizes KRIT1 from microtubules to cell junction membranes. Translocates from the cytoplasm along microtubules to the cell membrane in a ITGB1BP1-dependent manner.
• Preparation and Storage: Store at -20 degree C. Stable for 12 months from date of receipt.

Product Categories/Family for anti-KRIT1 antibody

Cytoplasm; Cytoskeleton; Cell membrane; Peripheral membrane protein; Cell junction; Primary

NCBI and Uniprot Product Information

• NCBI GI #: 61742817
• NCBI GeneID: 889
• NCBI Accession #: NP_001013424.1
• NCBI GenBank Nucleotide #: NM_001013406.1
• UniProt Accession #: O00522; O43894; Q506L6; Q6U276; Q75N19; Q9H180; Q9H264; Q9HAX5; A6NNU0
• Molecular Weight: 78,650 Da
• NCBI Official Full Name: krev interaction trapped protein 1 isoform 2
• NCBI Official Synonym Full Names: KRIT1, ankyrin repeat containing
• NCBI Official Symbol: KRIT1
• NCBI Official Synonym Symbols: CAM; CCM1
• NCBI Protein Information: krev interaction trapped protein 1
• UniProt Protein Name: Krev interaction trapped protein 1
• Protein Family: Krev interaction trapped protein
• UniProt Gene Name: KRIT1
• UniProt Synonym Gene Names: CCM1; Krev interaction trapped 1

NCBI Description

This gene encodes a protein containing four ankyrin repeats, a band 4.1/ezrin/radixin/moesin (FERM) domain, and multiple NPXY sequences. The encoded protein is localized in the nucleus and cytoplasm. It binds to integrin cytoplasmic domain-associated protein-1 alpha (ICAP1alpha), and plays a critical role in beta1-integrin-mediated cell proliferation. It associates with junction proteins and RAS-related protein 1A (Rap1A), which requires the encoded protein for maintaining the integrity of endothelial junctions. It is also a microtubule-associated protein and may play a role in microtubule targeting. Mutations in this gene result in cerebral cavernous malformations. Multiple alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Sep 2009]

Uniprot Description

KRIT1: Component of the CCM signaling pathway which is a crucial regulator of heart and vessel formation and integrity. Negative regulator of angiogenesis. Inhibits endothelial proliferation, apoptosis, migration, lumen formation and sprouting angiogenesis in primary endothelial cells. Promotes AKT phosphorylation in a NOTCH-dependent and independent manner, and inhibits EKR1/2 phosphorylation indirectly through activation of the DELTA-NOTCH cascade. Acts in concert with CDH5 to establish and maintain correct endothelial cell polarity and vascular lumen and these effects are mediated by recruitment and activation of the Par polarity complex and RAP1B. Required for the localization of phosphorylated PRKCZ, PARD3, TIAM1 and RAP1B to the cell junction, and cell junction stabilization. Plays an important role in the maintenance of the intracellular reactive oxygen species (ROS) homeostasis to prevent oxidative cellular damage. Regulates the homeostasis of intracellular ROS through an antioxidant pathway involving FOXO1 and SOD2. Facilitates the down-regulation of cyclin-D1 (CCND1) levels required for cell transition from proliferative growth to quiescence by preventing the accumulation of intracellular ROS through the modulation of FOXO1 and SOD2 levels. Defects in KRIT1 are the cause of cerebral cavernous malformations type 1 (CCM1). Cerebral cavernous malformations (CCMs) are congenital vascular anomalies of the central nervous system that can result in hemorrhagic stroke, seizures, recurrent headaches, and focal neurologic deficits. CCMs have an incidence of 0.1%-0.5% in the general population and usually present clinically during the 3rd to 5th decade of life. The lesions are characterized by grossly enlarged blood vessels consisting of a single layer of endothelium and without any intervening neural tissue, ranging in diameter from a few millimeters to several centimeters. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: G protein regulator, misc.; Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 7q21.2

Cellular Component: extracellular space; intercellular junction; microtubule; plasma membrane

Molecular Function: GTPase regulator activity; microtubule binding; phosphatidylinositol-4,5-bisphosphate binding; protein binding; protein complex binding

Biological Process: cell redox homeostasis; negative regulation of angiogenesis; negative regulation of endothelial cell proliferation; small GTPase mediated signal transduction

Disease: Cerebral Cavernous Malformations