6I2C

Crystal Structure of the Protein-Kinase A catalytic subunit from Cricetulus Griseus in complex with compounds RKp182 and Fasudil

• PDB DOI: https://doi.org/10.2210/pdb6I2C/pdb
• Entry: 6I2C supersedes: 6ERS

• Classification: TRANSFERASE
• Organism(s): Cricetulus griseus
• Expression System: Escherichia coli 'BL21-Gold(DE3)pLysS AG
• Mutation(s): No 


• Deposited: 2018-11-01 Released: 2019-05-15 
• Deposition Author(s): Mueller, J.M., Heine, A., Klebe, G.
• Funding Organization(s): Other government

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 0.221 
• R-Value Work: 0.185 
• R-Value Observed: 0.187 

Literature

Conceptional Design of Self-Assembling Bisubstrate-like Inhibitors of Protein Kinase A Resulting in a Boronic Acid Glutamate Linkage

Mueller, J.M., Kirschner, R., Geyer, A., Klebe, G.

(2019) ACS Omega 

• DOI: https://doi.org/10.1021/acsomega.8b02364

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

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

Macromolecule Content

• Total Structure Weight: 43.64 kDa 
• Atom Count: 2,988 
• Modelled Residue Count: 356 
• Deposited Residue Count: 371 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
cAMP-dependent protein kinase catalytic subunit alpha	A	353	Cricetulus griseus	Mutation(s): 0  Gene Names: PRKACA EC: 2.7.11.11
UniProt
Find proteins for P25321 (Cricetulus griseus) Explore P25321  Go to UniProtKB:  P25321

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
UPF0418 protein FAM164A	B	18	Cricetulus griseus	Mutation(s): 0
UniProt
Find proteins for G3HK48 (Cricetulus griseus) Explore G3HK48  Go to UniProtKB:  G3HK48

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
M77 (Subject of Investigation/LOI)	C [auth A]	5-(1,4-DIAZEPAN-1-SULFONYL)ISOQUINOLINE C14 H17 N3 O2 S NGOGFTYYXHNFQH-UHFFFAOYSA-N
RIP (Subject of Investigation/LOI)	D [auth B]	beta-D-ribopyranose C5 H10 O5 SRBFZHDQGSBBOR-TXICZTDVSA-N

Modified Residues  2 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
SEP	A	L-PEPTIDE LINKING	C3 H8 N O6 P		SER
TPO	A	L-PEPTIDE LINKING	C4 H10 N O6 P		THR

Binding Affinity Annotations
ID	Source	Binding Affinity
M77	BindingDB:  6I2C	Ki: min: 460, max: 1600 (nM) from 2 assay(s)
		IC50: min: 541, max: 7605 (nM) from 12 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.82 Å
• R-Value Free: 0.221 
• R-Value Work: 0.185 
• R-Value Observed: 0.187 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.338	α = 90
b = 73.088	β = 90
c = 77.183	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing
Coot	model building

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2019-05-15 
Deposition Author(s): Mueller, J.M., Heine, A., Klebe, G.
• This entry supersedes: 6ERS

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Funding Organization	Location	Grant Number
Other government	Germany	--

Revision History  

• Version 1.0: 2019-05-15
  Type: Initial release
  
• Version 1.1: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 1.2: 2024-10-09
  Changes: Data collection, Database references, Structure summary