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SAB4200173

Sigma-Aldrich

Anti-Rab18 antibody produced in rabbit

~1.0 mg/mL, affinity isolated antibody

Synonym(s):

Anti-RAB18LI1, Anti-ras-related protein Rab-18

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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

~23 kDa (an additional band at ∼43 kDa may appear in some extract preparations)

species reactivity

rat, mouse, human

concentration

~1.0 mg/mL

technique(s)

immunoprecipitation (IP): 5-10 μg using lysates of human PC3 cells
indirect immunofluorescence: 2.5-5.0 μg/mL using rat NRK cells
western blot: 1-2 μg/mL using whole extracts of mouse MM3MG cells

UniProt accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... RAB18(22931)
mouse ... Rab18(19330)
rat ... Rab18(307039)

Related Categories

General description

Rab18 is a member of the Rab family of small guanosine triphosphatases (GTPases). The Rab family belongs to the Ras superfamily of small guanosine triphosphatases (GTPases). Rab proteins contain conserved regions involved in guanine-nucleotide binding, and hypervariable C-terminal domains with a cysteine motif.

Application

Anti-Rab18 antibody produced in rabbit has been used in:
  • immunoblotting
  • immunoprecipitation
  • immunofluorescence

Biochem/physiol Actions

Rab guanosine triphosphatases (Rab GTPases) are central regulators of membrane trafficking between different subcellular compartments of eukaryotic cells. Their regulatory capacity depends on their ability to cycle between the guanosine diphosphate (GDP)-bound inactive and GTP-bound active states. Activation of a Rab protein is coupled to its association with intracellular membranes. Through their effector proteins, Rab GTPases regulate vesicle formation, actin- and tubulin-dependent vesicle movement and membrane fusion. The conserved regions of Rab proteins are implicated in subcellular targeting. Each Rab protein shows a characteristic subcellular distribution. Therefore, antibodies to Rab proteins may serve as useful tool for studying subcellular localization and membrane organization. Rab18 is involved in retrograde Golgi-endoplasmic reticulum (ER) trafficking.

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 Code

10 - Combustible liquids

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The ESCRT-III protein CHMP1A mediates secretion of Sonic Hedgehog on a distinctive subtype of extracellular vesicles
Coulter ME, et al.
Testing, 24(4), 973-986 (2018)
Characterization of Rab18, a lipid droplet-associated small GTPase
Martin S and Parton RG
Test, 438, 109-129 (2008)
The rab gtpase family
Stenmark H and Olkkonen VM
Genome Biology, 2(5), reviews3007-reviews3001 (2001)
Rab proteins as membrane organizers
Zerial M and McBride H
Nature Reviews in Molecular and Cell Biology, 2(2), 107-107 (2001)
Latent CSN-CRL complexes are crucial for curcumin-induced apoptosis and recruited during adipogenesis to lipid droplets via small GTPase RAB18.
Dubiel, et al.
iScience, 26, 106468-106468 (2023)

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