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SAB4200329

Sigma-Aldrich

Anti-IQGAP1 antibody produced in rabbit

~1.5 mg/mL, affinity isolated antibody

Synonym(s):

Anti-HUMORFA01, Anti-IQ Motif containing GTPASE activating, Anti-IQGAP, Anti-SAR1, Anti-p195

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

rabbit

conjugate

unconjugated

antibody form

affinity isolated antibody

antibody product type

primary antibodies

clone

polyclonal

form

buffered aqueous solution

mol wt

antigen ~189 kDa

species reactivity

rat, human, mouse

concentration

~1.5 mg/mL

technique(s)

immunohistochemistry: 10-20 μg/mL using formalin-fixed paraffin-embedded human colon
immunoprecipitation (IP): 5-10 μg using NRK cell lysates
western blot: 0.5-1 μg/mL using NIH3T3 cell extracts

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... IQGAP1(8826)
mouse ... 29875(Iqgap1)
rat ... 361598(Iqgap1)

General description

IQ motif containing GTPase activating protein1 (IQGAP1) is a scaffolding protein. It is a multi-domain protein containing multiple protein interacting motifs through which it interacts with its binding partners. The N-terminal calponin-homology domain (CHD) binds F-actin. The WW domain binds extracellular signal-regulated kinase 2 (ERK2) and its IQ domain binds calmodulin, myosin light chain and S110B. The GAP-related domain (GRD) mediates the binding to the small guanosine triphosphatases (GTPases, cell division control protein 42 (Cdc42) and Ras-related C3 botulinum toxin substrate (Rac1). The C-terminal Ras GTPase activating proteins (RasGAP) domain has been reported to interact with E-cadherin and b-catenin, cytoplasmic linker protein (CLIP-170) and adenomatous polyposis coli protein (APC).

Immunogen

synthetic peptide corresponding to a sequence near the C-terminal region of human IQGAP1, conjugated to KLH. The corresponding sequence is identical in mouse IQGAP1.

Application

Anti-IQGAP1 antibody produced in rabbit has been used in:
  • immunoblotting
  • immunoprecipitation
  • immunohistochemistry

Biochem/physiol Actions

IQ motif containing GTPase activating protein1 (IQGAP1) modulates multiple cellular functions, such as transcription, actin cytoskeleton organization, cell-cell adhesion and cell migration. It associates with a wide array of proteins, including actin, calmodulin, E-cadherin, b-catenin, cytoplasmic linker protein (CLIP-170) and components of the mitogen-activated protein (MAP) kinase pathway. IQGAP1 colocalizes with cell division control protein 42 (Cdc42) to the cytoskeleton and with actin in lamellipodia and ruffling cell membranes, thus regulating cell proliferation, cell polarity and migration. IQGAP1 is up-regulated in several carcinomas, including colorectal, lung, ovary and breast carcinoma and plays a role in tumorigenesis.

Physical form

Solution in 0.01 M phos­phate buffered saline, pH 7.4, containing 15 mM sodium azide.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class

10 - Combustible liquids

flash_point_f

Not applicable

flash_point_c

Not applicable


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Multiple proteins mediate IQGAP1-stimulated cell migration
Mataraza JM, et al.
Cellular Signalling, 19(9), 1857-1865 (2007)
IQGAP1 stimulates proliferation and enhances tumorigenesis of human breast epithelial cells
Jadeski L, et al.
The Journal of Biological Chemistry, 283(2), 1008-1017 (2008)
IQGAP1 as signal integrator: Ca2+, calmodulin, Cdc42 and the cytoskeleton
Briggs MW and Sacks DB
Febs Letters, 542(1-3), 7-11 (2003)
Overexpression and diffuse expression pattern of IQGAP1 at invasion fronts are independent prognostic parameters in ovarian carcinomas
Dong P, et al.
Cancer Letters, 243(1), 120-127 (2006)

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