2IPX

Human Fibrillarin

• PDB DOI: https://doi.org/10.2210/pdb2IPX/pdb

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


• Deposited: 2006-10-12 Released: 2006-10-24 
• Deposition Author(s): Min, J., Wu, H., Zeng, H., Loppnau, P., Weigelt, J., Sundstrom, M., Arrowsmith, C.H., Edwards, A.M., Bochkarev, A., Plotnikov, A.N., Structural Genomics Consortium (SGC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 0.246 
• R-Value Work: 0.200 
• R-Value Observed: 0.202 

Starting Model: experimental

Literature

The Crystal Structure of Human Fibrillarin in complex with SAH

Wu, H., Min, J., Zeng, H., Loppnau, P., Weigelt, J., Sundstrom, M., Arrowsmith, C.H., Edwards, A.M., Bochkarev, A., Plotnikov, A.N.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 26.36 kDa 
• Atom Count: 1,974 
• Modelled Residue Count: 220 
• Deposited Residue Count: 233 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
rRNA 2'-O-methyltransferase fibrillarin	A	233	Homo sapiens	Mutation(s): 5  Gene Names: FBL, FIB1, FLRN EC: 2.1.1
UniProt & NIH Common Fund Data Resources
Find proteins for P22087 (Homo sapiens) Explore P22087  Go to UniProtKB:  P22087
PHAROS:  P22087 GTEx:  ENSG00000105202

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MTA	D [auth A]	5'-DEOXY-5'-METHYLTHIOADENOSINE C11 H15 N5 O3 S WUUGFSXJNOTRMR-IOSLPCCCSA-N
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
MSE	A	L-PEPTIDE LINKING	C5 H11 N O2 Se		MET

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 0.246 
• R-Value Work: 0.200 
• R-Value Observed: 0.202 
• Space Group: P 4₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 57.261	α = 90
b = 57.261	β = 90
c = 135.028	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
CrystalClear	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-10-24 
Deposition Author(s): Min, J., Wu, H., Zeng, H., Loppnau, P., Weigelt, J., Sundstrom, M., Arrowsmith, C.H., Edwards, A.M., Bochkarev, A., Plotnikov, A.N., Structural Genomics Consortium (SGC)

Revision History  

• Version 1.0: 2006-10-24
  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: 2023-08-30
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.4: 2023-11-15
  Changes: Data collection
• Version 1.5: 2024-10-30
  Changes: Structure summary