Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A2B1C1 Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Hetero 4-mer - A2B2 Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 

Local Symmetry: Cyclic - C2  (3D View)
Local Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 81.82 kDa 
• Atom Count: 6119 
• Modelled Residue Count: 657 
• Deposited Residue Count: 708 
• Unique protein chains: 2

2HV8

Crystal structure of GTP-bound Rab11 in complex with FIP3

• PDB DOI: 10.2210/pdb2HV8/pdb

• Classification: PROTEIN TRANSPORT
• Organism(s): Homo sapiens
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2006-07-27 Released: 2006-11-21 
• Deposition Author(s): Eathiraj, S., Mishra, A., Prekeris, R., Lambright, D.G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.86 Å
• R-Value Free: 0.237 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 

Literature

Structural Basis for Rab11-mediated Recruitment of FIP3 to Recycling Endosomes.

Eathiraj, S., Mishra, A., Prekeris, R., Lambright, D.G.

(2006) J Mol Biol 364: 121-135

• PubMed: 17007872 
• DOI: 10.1016/j.jmb.2006.08.064
• Primary Citation of Related Structures:  
  2HV8


• PubMed Abstract: 
  

The Rab11 GTPase regulates recycling of internalized plasma membrane receptors and is essential for completion of cytokinesis. A family of Rab11 interacting proteins (FIPs) that conserve a C-terminal Rab-binding domain (RBD) selectively recognize the active form of Rab11. Normal completion of cytokinesis requires a complex between Rab11 and FIP3. Here, we report the crystal structure and mutational analysis of a heterotetrameric complex between constitutively active Rab11 and a FIP3 construct that includes the RBD. Two Rab11 molecules bind to dyad symmetric sites at the C terminus of FIP3, which forms a non-canonical coiled-coiled dimer with a flared C terminus and hook region. The RBD overlaps with the coiled coil and extends through the C-terminal hook. Although FIP3 engages the switch and interswitch regions of Rab11, the mode of interaction differs significantly from that of other Rab-effector complexes. In particular, the switch II region undergoes a large structural rearrangement from an ordered but non-complementary active conformation to a remodeled conformation that facilitates the interaction with FIP3. Finally, we provide evidence that FIP3 can form homo-oligomers in cells, and that a critical determinant of Rab11 binding in vitro is necessary for FIP3 recruitment to recycling endosomes during cytokinesis.

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Organizational Affiliation: 

Program in Molecular Medicine and Department of Biochemistry & Molecular Pharmacology, University of Massachusetts Medical School, Worcester, MA 01605, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Ras-related protein Rab-11A	A, C [auth B], E [auth C]	172	Homo sapiens	Mutation(s): 1  Gene Names: RAB11A, RAB11 EC: 3.6.5.2
UniProt & NIH Common Fund Data Resources
Find proteins for P62491 (Homo sapiens) Explore P62491  Go to UniProtKB:  P62491
PHAROS:  P62491 GTEx:  ENSG00000103769

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Rab11 family-interacting protein 3	B [auth D], D [auth E], F	64	Homo sapiens	Mutation(s): 0  Gene Names: RAB11FIP3, ARFO1, KIAA0665
UniProt & NIH Common Fund Data Resources
Find proteins for O75154 (Homo sapiens) Explore O75154  Go to UniProtKB:  O75154
PHAROS:  O75154 GTEx:  ENSG00000090565

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GTP	I [auth A], N [auth B], S [auth C]	GUANOSINE-5'-TRIPHOSPHATE C10 H16 N5 O14 P3 XKMLYUALXHKNFT-UUOKFMHZSA-N
MES	O [auth B]	2-(N-MORPHOLINO)-ETHANESULFONIC ACID C6 H13 N O4 S SXGZJKUKBWWHRA-UHFFFAOYSA-N
SO4	H [auth A], L [auth B], M [auth B], Q [auth C], R [auth C]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
2ME	J [auth B]	METHOXYETHANE C3 H8 O XOBKSJJDNFUZPF-UHFFFAOYSA-N
MG	G [auth A], K [auth B], P [auth C]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.86 Å
• R-Value Free: 0.237 
• R-Value Work: 0.203 
• R-Value Observed: 0.205 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 218.291	α = 90
b = 52.601	β = 105.56
c = 70.679	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-07-27 
• Released Date: 2006-11-21 
Deposition Author(s): Eathiraj, S., Mishra, A., Prekeris, R., Lambright, D.G.

Revision History  

• Version 1.0: 2006-11-21
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-10-20
  Changes: Database references, Derived calculations