2A14

Crystal Structure of Human Indolethylamine N-methyltransferase with SAH

• PDB DOI: https://doi.org/10.2210/pdb2A14/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-06-17 Released: 2005-06-28 
• Deposition Author(s): Dong, A., Wu, H., Zeng, H., Loppnau, P., 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: 1.70 Å
• R-Value Free: 0.197 
• R-Value Work: 0.163 
• R-Value Observed: 0.164 

Starting Model: experimental

Literature

The Crystal Structure of Human Indolethylamine N-methyltransferase in complex with SAH.

Wu, H., Dong, A., Zeng, H., Loppnau, P., 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: 29.29 kDa 
• Atom Count: 2,321 
• Modelled Residue Count: 257 
• Deposited Residue Count: 263 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
indolethylamine N-methyltransferase	A	263	Homo sapiens	Mutation(s): 0  EC: 2.1.1.49
UniProt & NIH Common Fund Data Resources
Find proteins for O95050 (Homo sapiens) Explore O95050  Go to UniProtKB:  O95050
PHAROS:  O95050 GTEx:  ENSG00000241644

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAH	C [auth A]	S-ADENOSYL-L-HOMOCYSTEINE C14 H20 N6 O5 S ZJUKTBDSGOFHSH-WFMPWKQPSA-N
SO4	B [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Binding Affinity Annotations
ID	Source	Binding Affinity
SAH	PDBBind:  2A14	Ki: 2000 (nM) from 1 assay(s)
	BindingDB:  2A14	Ki: 2000 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.197 
• R-Value Work: 0.163 
• R-Value Observed: 0.164 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 86.407	α = 90
b = 117.461	β = 90
c = 66.116	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
CrystalClear	data reduction
SCALEPACK	data scaling
MOLREP	phasing
O	model building

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-06-28 
Deposition Author(s): Dong, A., Wu, H., Zeng, H., Loppnau, P., Sundstrom, M., Arrowsmith, C.H., Edwards, A.M., Bochkarev, A., Plotnikov, A.N., Structural Genomics Consortium (SGC)

Revision History  

• Version 1.0: 2005-06-28
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2023-08-23
  Changes: Data collection, Database references, Derived calculations, Refinement description