1AC4 | pdb_00001ac4

VARIATION IN THE STRENGTH OF A CH TO O HYDROGEN BOND IN AN ARTIFICIAL PROTEIN CAVITY (2,3,4-TRIMETHYL-1,3-THIAZOLE)

• PDB DOI: https://doi.org/10.2210/pdb1AC4/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Saccharomyces cerevisiae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 1997-02-12 Released: 1997-09-04 
• Deposition Author(s): Musah, R.A., Jensen, G.M., Bunte, S.W., Rosenfeld, R., Mcree, D.E., Goodin, D.B.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Work: 
  0.200 (DCC) 

Starting Model: experimental

Literature

Variation in strength of an unconventional C-H to O hydrogen bond in an engineered protein cavity

Fitzgerald, M.M., Musah, R.A., McRee, D.E., Goodin, D.B.

(1997) J Am Chem Soc 119: 626-631

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 34.2 kDa 
• Atom Count: 2,438 
• Modeled Residue Count: 291 
• Deposited Residue Count: 294 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYTOCHROME C PEROXIDASE	A	294	Saccharomyces cerevisiae	Mutation(s): 1  Gene Names: CCP EC: 1.11.1.5
UniProt
Find proteins for P00431 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P00431  Go to UniProtKB:  P00431

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
HEM	B [auth A]	PROTOPORPHYRIN IX CONTAINING FE C34 H32 Fe N4 O4 KABFMIBPWCXCRK-RGGAHWMASA-L
TMT	C [auth A]	2,3,4-TRIMETHYL-1,3-THIAZOLE C6 H10 N S UHOYCVRPRYFLFR-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Work:  0.200 (DCC) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 105.2	α = 90
b = 74.3	β = 90
c = 45.4	γ = 90

Software Package:

Software Name	Purpose
XTALVIEW	refinement
XENGEN	data reduction
XENGEN	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-09-04 
Deposition Author(s): Musah, R.A., Jensen, G.M., Bunte, S.W., Rosenfeld, R., Mcree, D.E., Goodin, D.B.

Revision History  

• Version 1.0: 1997-09-04
  Type: Initial release
  
• Version 1.1: 2008-03-04
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations
• Version 1.4: 2023-08-02
  Changes: Refinement description
• Version 1.5: 2024-05-22
  Changes: Data collection