Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 103.25 kDa 
• Atom Count: 7,676 
• Modelled Residue Count: 906 
• Deposited Residue Count: 928 
• Unique protein chains: 1

 1ZCZ

Crystal structure of Phosphoribosylaminoimidazolecarboxamide formyltransferase / IMP cyclohydrolase (TM1249) from THERMOTOGA MARITIMA at 1.88 A resolution

• PDB DOI:  https://doi.org/10.2210/pdb1ZCZ/pdb

• Classification: TRANSFERASE/HYDROLASE
• Organism(s): Thermotoga maritima
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-04-13 Released: 2005-04-26 
• Deposition Author(s): Joint Center for Structural Genomics (JCSG)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free: 0.197 
• R-Value Work: 0.156 
• R-Value Observed: 0.158 

Literature

Crystal structure of AICAR transformylase IMP cyclohydrolase (TM1249) from Thermotoga maritima at 1.88 A resolution.

Axelrod, H.L., McMullan, D., Krishna, S.S., Miller, M.D., Elsliger, M.A., Abdubek, P., Ambing, E., Astakhova, T., Carlton, D., Chiu, H.J., Clayton, T., Duan, L., Feuerhelm, J., Grzechnik, S.K., Hale, J., Han, G.W., Haugen, J., Jaroszewski, L., Jin, K.K., Klock, H.E., Knuth, M.W., Koesema, E., Morse, A.T., Nigoghossian, E., Okach, L., Oommachen, S., Paulsen, J., Quijano, K., Reyes, R., Rife, C.L., van den Bedem, H., Weekes, D., White, A., Wolf, G., Xu, Q., Hodgson, K.O., Wooley, J., Deacon, A.M., Godzik, A., Lesley, S.A., Wilson, I.A.

(2008) Proteins 71: 1042-1049

• PubMed: 18260100 
• DOI: https://doi.org/10.1002/prot.21967
• Primary Citation of Related Structures:  
  1ZCZ

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bifunctional purine biosynthesis protein purH	A, B	464	Thermotoga maritima	Mutation(s): 0  Gene Names: purH EC: 2.1.2.3 (UniProt), 3.5.4.10 (UniProt)
UniProt
Find proteins for Q9X0X6 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8)) Explore Q9X0X6  Go to UniProtKB:  Q9X0X6

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
PG4	D [auth A], F [auth B]	TETRAETHYLENE GLYCOL C8 H18 O5 UWHCKJMYHZGTIT-UHFFFAOYSA-N
K	C [auth A], E [auth B]	POTASSIUM ION K NPYPAHLBTDXSSS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.88 Å
• R-Value Free: 0.197 
• R-Value Work: 0.156 
• R-Value Observed: 0.158 
• Space Group: P 1
• Diffraction Data: https://doi.org/10.18430/M31ZCZ

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.084	α = 99.26
b = 58.63	β = 96.89
c = 72.749	γ = 106.13

Software Package:

Software Name	Purpose
REFMAC	refinement
SCALEPACK	data scaling
PDB_EXTRACT	data extraction
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2005-04-26 
Deposition Author(s): Joint Center for Structural Genomics (JCSG)

Revision History  

• Version 1.0: 2005-04-26
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.3: 2023-01-25
  Changes: Database references, Derived calculations