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. 2012 Nov 13;12:28. doi: 10.1186/1472-6807-12-28

Table 2.

List of dimer interface residues in PKR and the nature of interactions between them

PKR (B chain) PKR (C chain) Nature of interaction
R262
D266
Ionic interaction
D266
R262
Ionic interaction
H286
C326
Hydrogen bond : NE2 of His with O of Cys
I288
Y300, V309
Hydrophobic interaction
D289
Y323
Hydrogen bond: OD2 of asp with OH of Tyr
Y293
Y323
Hydrophobic interaction
D316
H322
Ionic interaction,
V318
V318
Hydrophobic interaction
H322
D316,Y323
Hydrogen bond: ND1 of his with OD1 of Asp
NE2 of his with OD1 of Asp
NE2 of his with O of Tyr
Ionic interaction
Y323
Y293, H322,D289
Hydrophobic interaction
Hydrogen bond : O of Tyr with NE2 of His
OH of Tyr with OD2 of Asp
N324
Y323,N324
Hydrogen bond: ND2 of Asn with O of Tyr
ND2 of Asn with O of Asn
C326 H286 Hydrogen bond: SG of Cys with NE2 of His

The list of non-covalent interactions at the dimeric interface of PKR [22] has been obtained by using PIC (protein interaction calculator) server [38].