RAB11A Antibody

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Description

Biological Functions of RAB11A Protein

RAB11A (Ras-related protein Rab-11A) operates through GTP/GDP cycling to regulate:

Cellular ProcessMechanismKey Partners
Endocytic recyclingMediates vesicle formation and movement from early endosomes to recycling compartmentsMYO5B, RAB11FIP2, DNMBP
CytokinesisCoordinates membrane delivery for cell division machineryFIP3, dynein
Epithelial polarizationFacilitates transcytosis of PODXL to apical membranesRAB8A, exocyst complex, CDC42
CiliogenesisEssential for protein trafficking in developing hair cell ciliaUnspecified effectors

The protein shows 24 kDa molecular weight across species (human, mouse, rat) and requires GTP binding for effector recruitment .

ab65200 (Abcam)

  • Applications: WB, IP, IF/ICC

  • Reactivity: Human, mouse

  • Key Findings:

    • Identifies Rab11A in recycling endosome studies

    • Used to demonstrate Rab11A-FIP3-dynein complex formation

20229-1-AP (Proteintech)

ParameterDetail
Host SpeciesRabbit
ReactivityHuman, mouse, rat, canine
ApplicationsWB, IHC, IF/ICC, IP (12+ validated studies)
EpitopeC-terminal peptide (residues 200-213)
DistinctivenessNo cross-reactivity with Rab11B/Rab25

This antibody detects endogenous Rab11A without permeabilization in immunofluorescence assays .

Developmental Biology

  • Ciliogenesis Defects: Rab11a knockout mice show 87% reduction in hair cell cilia formation via immunofluorescence analysis using Rab11A antibodies .

Cancer Biology

  • Leukemia Angiogenesis:

    • AuNP@RAB11A silencing reduces exosome-induced endothelial tube formation by 64% (p<0.01)

    • Alters exosomal VEGF/FGF2 ratios from 1:1.2 to 1:0.4

Membrane Trafficking

  • CFTR Transport: Co-localization studies with MYO5B show Rab11A mediates 73% of CFTR vesicular trafficking in polarized epithelia .

Experimental Considerations

Optimal Usage Conditions:

  • Western Blot: 1:500-1:2000 dilution in 5% BSA/TBST

  • Immunofluorescence: 1:50-1:100 with methanol fixation

  • Buffer Compatibility: PBS-based storage buffers maintain stability for 12 months at -20°C

Validation Controls:

  • siRNA knockdown reduces signal intensity by ≥90%

  • No cross-reactivity with Rab11B/Rab25 in triple-KO cell lines

Product Specs

Buffer
PBS with 0.02% Sodium Azide, 50% Glycerol, pH 7.3. Store at -20°C. Avoid freeze/thaw cycles.
Lead Time
Typically, we can ship your orders within 1-3 business days of receiving them. Delivery times may vary depending on the purchase method or location. For specific delivery times, please contact your local distributors.
Synonyms
MGC1490 antibody; Rab 11 antibody; Rab 11A antibody; RAB 11A, member oncogene family antibody; Rab-11 antibody; RAB11 A antibody; RAB11 antibody; Rab11a antibody; RAB11A member RAS oncogene family antibody; Ras related protein Rab 11A antibody; Ras related protein Rab11A antibody; Ras-related protein Rab-11A antibody; RB11A_HUMAN antibody; YL 8 antibody; YL8 antibody
Target Names
Uniprot No.

Target Background

Function
RAB11A, a small Rab GTPase, plays a critical role in regulating intracellular membrane trafficking. It facilitates various processes, from the formation of transport vesicles to their fusion with target membranes. RAB11A oscillates between an inactive GDP-bound state and an active GTP-bound state. The active form recruits a specific set of downstream effectors to membranes, directly influencing vesicle formation, movement, tethering, and fusion. RAB11A is particularly important in regulating endocytic recycling. It acts as a key regulator of membrane delivery during cytokinesis, contributing to the process of cell division. In conjunction with MYO5B and RAB8A, RAB11A participates in epithelial cell polarization, ensuring proper cell orientation and function. RAB11A collaborates with RAB3IP, RAB8A, the exocyst complex, PARD3, PRKCI, ANXA2, CDC42, and DNMBP to facilitate the transcytosis of PODXL to the apical membrane initiation sites (AMIS), leading to apical surface formation and lumenogenesis. Working together with MYO5B, RAB11A plays a role in CFTR trafficking to the plasma membrane and TF (Transferrin) recycling in nonpolarized cells. RAB11A is essential for the transport of NPC1L1 to the plasma membrane, forming a complex with MYO5B and RAB11FIP2. It participates in the sorting and basolateral transport of CDH1 from the Golgi apparatus to the plasma membrane. Furthermore, RAB11A regulates the recycling of FCGRT (receptor of Fc region of monomeric Ig G) to basolateral membranes. RAB11A may also contribute to melanosome transport and release from melanocytes.
Gene References Into Functions
  1. Irregularly coated vesicle formation is observed exclusively in influenza A virus infected cells and necessitates an active Rab11 GTPase. PMID: 29123131
  2. This study proposes that Rab11a acts as a crucial oncoprotein and regulator of YAP in human non-small cell lung cancer. PMID: 28468127
  3. This review examines the structure and function of the novel Rab11-FIP3-Rabin8 dual effector complex and its implications for targeting sensory receptors to primary cilia. Dysfunctional cilia are linked to ciliopathies, a group of human diseases and disorders. PMID: 26399276
  4. Data suggest that membrane tethering mediated by endosomal RAB11A is significantly and selectively stimulated by its cognate Rab effectors, class V myosins (MYO5A and MYO5B), in a GTP-dependent manner. (RAB11A = ras-related GTPase Rab-11A; MYO5 = myosin class V) PMID: 28939769
  5. These studies are the first to identify the alpha4 helix of Rab11a as a protein binding domain on the GTPase. They provide novel mechanistic insights into the intracellular trafficking of the hIP, and potentially of other members of the GPCR superfamily, involving Rab11-dependent mechanisms. PMID: 28739266
  6. Transient expression of ATG16L1 not only inhibited autophagosome biogenesis, but also aberrantly targeted RAB11-positive recycling endosomes, resulting in recycling endosome aggregates. PMID: 27875067
  7. The results from this analysis indicated that Rab11a, Rab11c(Rab25) and Rab14 were expressed in a wide range of cell lines, including the human placental trophoblastic BeWo cell line. PMID: 28922401
  8. The results suggest that progressive assembly of vRNA segments may be cell type dependent and that vRNA may be transported through the cytoplasm without Rab11A-containing recycling endosomes in the absence of intact microtubules. PMID: 28724771
  9. Rac1-Rab11-FIP3 regulatory hub coordinates vesicle traffic with actin remodeling and T-cell activation PMID: 27154205
  10. In colorectal carcinoma, overexpression of Rab11 was found to promote collective cell migration through the increased distribution of E-cadherin, which enhanced cell-cell connections. PMID: 27696383
  11. A novel tribasic Golgi export signal directs cargo protein interaction with activated Rab11 and AP-1-dependent Golgi-plasma membrane trafficking. PMID: 26941330
  12. Analysis reveals novel aspects of the PI4KIIIb-Rab11 complex, specifically conformational changes induced in the switch regions of activated Rab11. PMID: 26756197
  13. Substituted V20 of Rab11A was found to interfere with proper localization of the water molecule, which mediated GTP hydrolysis, resulting in GTP being locked in an active form of Rab11A S20V. PMID: 26879265
  14. Data (including data from studies in knockout mice) suggest Munc13-4 binds to Rab11 and regulates trafficking of Rab11-containing vesicles; Munc13-4 appears to regulate final steps of Rab11-positive vesicle docking at plasma membrane in exocytosis. PMID: 26637356
  15. Rab11A and Rab11B differentially regulate intracellular trafficking of PAR1 through distinct endosomal sorting mechanisms PMID: 26635365
  16. Rab11a/Rab11 family-interacting protein 2-mediated VE-cadherin recycling is required for formation of adherens junctions and restoration of vascular endothelial barrier integrity. PMID: 26663395
  17. Mumps Virus release from the apical surface of polarized epithelial cells is facilitated by a Rab11-mediated transport system. PMID: 26378159
  18. Vaccinia virus traffics to early endosomes, where recycling endosome markers Rab11 and Rab22 are recruited to participate in subsequent virus trafficking prior to virus core uncoating in the cytoplasm. PMID: 26041286
  19. Rab11a-knockdown cells displayed mislocalization of STX3 and the presentation of microvilli in the basolateral compartment PMID: 25673875
  20. Rab11 co-localizes with alpha-synuclein in intracellular inclusions and modulates its aggregation, secretion and toxicity. PMID: 25092884
  21. PI4KIIIbeta likely plays a role in breast oncogenesis and that cooperation between Rab11a and PI4KIIIbeta represents a novel Akt activation pathway. PMID: 24962317
  22. Additionally, Rab11 recruitment is absent and Shigella-containing vacuolar rupture is delayed in the ipgD mutant that does not dephosphorylate PI(4,5)P2 into PI(5)P. PMID: 25299335
  23. Data demonstrated that Rab11 regulated E-cadherin expression and promoted colon cancer cell transformation. PMID: 25117932
  24. Rab11-dependent EGFR recycling has a role in synergistic cytotoxicity of afatinib and cetuximab against EGFR T790M PMID: 25446083
  25. Microvilli establishment required interaction between RAB8A and MYO5B, while loss of the interaction between RAB11A and MYO5B induced microvillus inclusions. PMID: 24892806
  26. Ubiquitylation and activation of RAB11a is promoted by a beta2 adrenergic receptor-HACE1 complex. PMID: 24190883
  27. Rab11A controls BACE1 recycling to endosomes and thus affects beta-amyloid production. PMID: 24373285
  28. These data provide a mechanism for how PI4KIIIbeta coordinates Rab11 and its effectors on PI4P-enriched membranes and also provide strategies for the design of specific inhibitors that could potentially target plasmodial PI4KIIIbeta to combat malaria. PMID: 24876499
  29. Mitochondrial remodeling was associated with increased proximity between Rab11a and mitochondrial membranes, changes in fusion-fission dynamics, and mitochondrial relocalization of the Drp1, which was regulated by the Rab11a effector protein FIP1/RCP. PMID: 24302731
  30. Data indicate that alpha2-macroglobulin (alpha2M*), through its receptor LRP1, induces cellular migration of Muller glial cells by a mechanism that involves MT1-MMP intracellular traffic to the plasma membrane by a Rab11-dependent recycling pathway. PMID: 23640058
  31. Dominant negative (GDP-locked)-Rab5 and -Rab11 reproduced the effects of inhibitors of tubulin and actin, respectively, on the cycling of bradykinin B receptor. PMID: 23454239
  32. These findings suggest that Rab11-FIP1 proteins participate in spatially and temporally distinct steps of the recycling process along a complex and dynamic tubular network in which Rab11-FIPs occupy discrete domains. PMID: 23283983
  33. The potential roles of the Rab11 pathway in the trafficking, assembly and budding steps of negative-strand viruses. PMID: 23176490
  34. Rab11 depletion gives rise to accumulation of recycling carriers containing endocytosed transferrin and transferrin receptor beneath the plasma membrane. PMID: 22685325
  35. Findings show 2 mother centriole appendage proteins, centriolin and cenexin/ODF2, regulate association of the endosome components Rab11, the Evi5, and the exocyst at the mother centriole PMID: 22981775
  36. Rab11A/myosin Vb/Rab11-FIP2 complex frames two late recycling steps of langerin from the ERC to the plasma membrane PMID: 22420646
  37. TBC1D14 binds activated Rab11 but is not a GAP for Rab11, and loss of Rab11 prevents TBC1D14-induced tubulation of recycling endosomes. PMID: 22613832
  38. Our data suggest a selective role of PICK1 in clustering and reducing the recycling rates of PDZ domain binding partners sorted to the Rab11-dependent recycling pathway. PMID: 22303009
  39. Recycling was accompanied by dephosphorylation of VEGFR-2 between Rab4 and Rab11 vesicles and quantitatively and qualitatively altered signal output. PMID: 21586748
  40. Our results uncover a critical host factor with an essential contribution to influenza virus genome delivery and reveal a potential role for RAB11A in the transport of ribonucleoprotein cargo. PMID: 21525351
  41. The authors propose that influenza virus ribonucleoproteins are routed from the nucleus to the pericentriolar recycling endosome (RE), where they access a Rab11-dependent vesicular transport pathway to the cell periphery. PMID: 21307188
  42. Rabin8 and Rab11 are associated with the Bardet-Biedl syndrome. PMID: 21273506
  43. Rab11a, but not Rab8a, is required for recycling of transferrin in nonpolarized cells. PMID: 21282656
  44. Rab11a played a prominent role in recycling of the wild type ss1-adrenergic receptors because dominant negative rab11a inhibited. PMID: 20727405
  45. Rab11a is an important regulator of TLR4 and Toll-receptor-associated molecule transport to E. coli phagosomes thereby controlling IRF3 activation from this compartment. PMID: 20933442
  46. Mutant prion protein expression is associated with an alteration of the Rab GDP dissociation inhibitor alpha (GDI)/Rab11 pathway. PMID: 19996123
  47. Results describe the involvement of two Rab GTPases, Rab9 and Rab11, in the trafficking of TRPC6. PMID: 20346379
  48. Transmission electron microscopy of thin sections confirmed that Rab11 depletion resulted in significant numbers of abnormally formed virus particles that had failed to pinch off from the plasma membrane. PMID: 20357086
  49. Rab11, in its GTP-bound form, interacts with Rabin8 and kinetically stimulates the guanine nucleotide-exchange activity of Rabin8 toward Rab8. PMID: 20308558
  50. Mutation impairs a specific subset of Rab11 interactions, possibly those involved in cytoskeleton-based movements driving the slow recycling pathway PMID: 14699104

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Database Links

HGNC: 9760

OMIM: 605570

KEGG: hsa:8766

STRING: 9606.ENSP00000261890

UniGene: Hs.321541

Protein Families
Small GTPase superfamily, Rab family
Subcellular Location
Cell membrane; Lipid-anchor. Recycling endosome membrane; Lipid-anchor. Cleavage furrow. Cytoplasmic vesicle, phagosome. Cytoplasmic vesicle membrane.

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