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AB102702

Recombinant Human RAB27B protein

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Recombinant Human RAB27B protein is a Human Full Length protein, in the 1 to 218 aa range, expressed in Escherichia coli, with >90%, suitable for SDS-PAGE, Mass Spec.

View Alternative Names

Ras-related protein Rab-27B, C25KG, RAB27B

1 Images
SDS-PAGE - Recombinant Human RAB27B protein (AB102702)
  • SDS-PAGE

Supplier Data

SDS-PAGE - Recombinant Human RAB27B protein (AB102702)

15% SDS-PAGE showing ab102702 at approximately 26.7kDa (3µg).

Key facts

Purity

>90% SDS-PAGE

Expression system

Escherichia coli

Tags

His tag N-Terminus

Applications

Mass Spec, SDS-PAGE

applications

Biologically active

No

Accession

O00194

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 8 Constituents: 10% Glycerol (glycerin, glycerine), 0.58% Sodium chloride, 0.316% Tris HCl, 0.0154% (R*,R*)-1,4-Dimercaptobutan-2,3-diol

storage-buffer

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" }, "Mass Spec": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"sequence":"MGSSHHHHHHSSGLVPRGSHMTDGDYDYLIKLLALGDSGVGKTTFLYRYTDNKFNPKFITTVGIDFREKRVVYNAQGPNGSSGKAFKVHLQLWDTAGQERFRSLTTAFFRDAMGFLLMFDLTSQQSFLNVRNWMSQLQANAYCENPDIVLIGNKADLPDQREVNERQARELADKYGIPYFETSAATGQNVEKAVETLLDLIMKRMEQCVEKTQIPDTVNGGNSGNLDGEKPPEKKCIC","proteinLength":"Full Length","predictedMolecularWeight":"26.7 kDa","actualMolecularWeight":null,"aminoAcidEnd":218,"aminoAcidStart":1,"nature":"Recombinant","expressionSystem":"Escherichia coli","accessionNumber":"O00194","tags":[{"tag":"His","terminus":"N-Terminus"}]}]
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Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
False
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

RAB27B also known as Ras-related protein Rab-27B belongs to the Rab family of small GTPases and has a molecular mass of approximately 25 kDa. RAB27B is involved in intracellular vesicle trafficking processes. It is expressed in various tissues with notable expression in platelets and secretory cells. The protein cycles between GDP-bound inactive and GTP-bound active states regulates cargo delivery and maintains distinct cellular compartments.
Biological function summary

The functional role of RAB27B includes mediating the transport and exocytosis of secretory vesicles. This protein collaborates with effector molecules such as MLPH (melanophilin) as part of a multiprotein complex that facilitates vesicle membrane docking and fusion. RAB27B's activity ensures proper cellular secretion processes impacting hormone release pigment distribution and other essential secretory pathways.

Pathways

RAB27B participates in the exosome secretion and regulated secretory pathways. It closely interacts with other proteins including RAB27A which shares similar trafficking functions. RAB27B plays a role in specialized secretory pathways affecting the maturation and docking of vesicles in cells like melanocytes and cytotoxic T lymphocytes which are essential for efficient immune responses and pigmentation respectively.

RAB27B is relevant in conditions such as cancer and Griscelli syndrome. Its dysregulation can contribute to tumor progression and metastasis due to altered vesicle trafficking and secretion dynamics. In Griscelli syndrome type 2 mutations in the related protein RAB27A although not directly in RAB27B impact melanosome transport leading to pigmentary issues and immune dysfunction. Understanding RAB27B's involvement offers insights into potential therapeutic strategies targeting these pathways.
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Specifications

Form

Liquid

Additional notes

purified by using anion-exchange chromatography (DEAE sepharose resin) and gel-filtration chromatography (Sephacryl S-200) with 20mM Tris pH 7.5, 2mM EDTA.

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General info

Function

Small GTPase which cycles between active GTP-bound and inactive GDP-bound states. In its active state, binds to a variety of effector proteins to regulate homeostasis of late endocytic pathway, including endosomal positioning, maturation and secretion (PubMed : 30771381). Plays a role in NTRK2/TRKB axonal anterograde transport by facilitating the association of NTRK2/TRKB with KLC1 (PubMed : 21775604). May be involved in targeting uroplakins to urothelial apical membranes (By similarity).

Sequence similarities

Belongs to the small GTPase superfamily. Rab family.

Subcellular localisation

Late endosome

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Product protocols

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Target data

Small GTPase which cycles between active GTP-bound and inactive GDP-bound states. In its active state, binds to a variety of effector proteins to regulate homeostasis of late endocytic pathway, including endosomal positioning, maturation and secretion (PubMed : 30771381). Plays a role in NTRK2/TRKB axonal anterograde transport by facilitating the association of NTRK2/TRKB with KLC1 (PubMed : 21775604). May be involved in targeting uroplakins to urothelial apical membranes (By similarity).
See full target information RAB27B
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