Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 101.29 kDa 
• Atom Count: 7,020 
• Modelled Residue Count: 876 
• Deposited Residue Count: 876 
• Unique protein chains: 1

 2HCK

SRC FAMILY KINASE HCK-QUERCETIN COMPLEX

• PDB DOI:  https://doi.org/10.2210/pdb2HCK/pdb

• Classification: TRANSFERASE
• Organism(s): Homo sapiens
• Expression System: Spodoptera frugiperda
• Mutation(s): Yes 


• Deposited: 1997-02-25 Released: 1997-08-20 
• Deposition Author(s): Sicheri, F., Moarefi, I., Kuriyan, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.311 
• R-Value Work: 0.228 
• R-Value Observed: 0.228 

Literature

Crystal structure of the Src family tyrosine kinase Hck.

Sicheri, F., Moarefi, I., Kuriyan, J.

(1997) Nature 385: 602-609

• PubMed: 9024658 
• DOI: https://doi.org/10.1038/385602a0
• Primary Citation of Related Structures:  
  1AD5, 2HCK


• PubMed Abstract: 
  

The crystal structure of the haematopoietic cell kinase Hck has been determined at 2.6/2.9 A resolution. Inhibition of enzymatic activity is a consequence of intramolecular interactions of the enzyme's Src-homology domains SH2 and SH3, with concomitant displacement of elements of the catalytic domain. The conformation of the active site has similarities with that of inactive cyclin-dependent protein kinases.

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Organizational Affiliation: 

Laboratories of Molecular Biophysics, The Rockefeller University, New York 10021, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HEMATOPOETIC CELL KINASE HCK	A, B	438	Homo sapiens	Mutation(s): 1  Gene Names: HUMAN HCK, HCK EC: 2.7.1.112 (PDB Primary Data), 2.7.10.2 (UniProt)
UniProt & NIH Common Fund Data Resources
Find proteins for P08631 (Homo sapiens) Explore P08631  Go to UniProtKB:  P08631
PHAROS:  P08631

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
QUE	D [auth A], F [auth B]	3,5,7,3',4'-PENTAHYDROXYFLAVONE C15 H10 O7 REFJWTPEDVJJIY-UHFFFAOYSA-N
CA	C [auth A], E [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PTR	A, B	L-PEPTIDE LINKING	C9 H12 N O6 P		TYR

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 0.311 
• R-Value Work: 0.228 
• R-Value Observed: 0.228 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 73.5	α = 90
b = 93.3	β = 90
c = 176.9	γ = 90

Software Package:

Software Name	Purpose
PHASES	phasing
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-08-20 
Deposition Author(s): Sicheri, F., Moarefi, I., Kuriyan, J.

Revision History  

• Version 1.0: 1997-08-20
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance