5TC7

Crystal structure of human 5'-deoxy-5'-methylthioadenosine phosphorylase in complex with 5'-methylthiotubercidin at 1.75 angstrom

• PDB DOI: https://doi.org/10.2210/pdb5TC7/pdb

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


• Deposited: 2016-09-14 Released: 2017-10-11 
• Deposition Author(s): Cameron, S.A., Firestone, R.S., Schramm, V.L., Almo, S.C.
• Funding Organization(s): National Institutes of Health/National Cancer Institute (NIH/NCI)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free: 
  0.184 (Depositor), 0.200 (DCC) 
• R-Value Work: 
  0.170 (Depositor), 0.180 (DCC) 
• R-Value Observed: 
  0.170 (Depositor) 

Starting Model: experimental

Literature

TBA

Firestone, R.S., Cameron, S.A., Karp, J.M., Arcus, V.L., Schramm, V.L.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C3  (Explore in 3D)
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 33.74 kDa 
• Atom Count: 2,351 
• Modelled Residue Count: 273 
• Deposited Residue Count: 297 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
S-methyl-5'-thioadenosine phosphorylase	A	297	Homo sapiens	Mutation(s): 0  Gene Names: MTAP, MSAP EC: 2.4.2.28
UniProt & NIH Common Fund Data Resources
Find proteins for Q13126 (Homo sapiens) Explore Q13126  Go to UniProtKB:  Q13126
PHAROS:  Q13126 GTEx:  ENSG00000099810

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MTH	E [auth A]	2-(4-AMINO-PYRROLO[2,3-D]PYRIMIDIN-7-YL)-5-METHYLSULFANYLMETHYL-TETRAHYDRO-FURAN-3,4-DIOL C12 H16 N4 O3 S WBPLMFVTQMIPLW-MFYTUXHUSA-N
PO4	B [auth A], C [auth A], D [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
CL	F [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.75 Å
• R-Value Free:  0.184 (Depositor), 0.200 (DCC) 
• R-Value Work:  0.170 (Depositor), 0.180 (DCC) 
• R-Value Observed: 0.170 (Depositor) 

Space Group: P 3 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 123.359	α = 90
b = 123.359	β = 90
c = 44.499	γ = 120

Software Package:

Software Name	Purpose
XDS	data reduction
XDS	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2017-10-11 
Deposition Author(s): Cameron, S.A., Firestone, R.S., Schramm, V.L., Almo, S.C.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Cancer Institute (NIH/NCI)	United States	6-RO1-CA135405-08

Revision History  

• Version 1.0: 2017-10-11
  Type: Initial release
  
• Version 1.1: 2019-12-04
  Changes: Author supporting evidence
• Version 1.2: 2023-10-04
  Changes: Data collection, Database references, Refinement description
• Version 1.3: 2024-11-06
  Changes: Structure summary