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Table 2 Cα to Cα distance (Å) between UmuC-peptide complex structures and previously solved complexes

From: The UmuC subunit of the E. coli DNA polymerase V shows a unique interaction with the β-clamp processivity factor

Residue - peptide Pol II Pol III Pol IV
Ala/Gly(II)/Glu(III)/Arg(IV) 0.84 0.79 0.67
Gln 0.74 0.39 0.73
Leu/ Val(III) 1.43 1.65 0.78
Asn/Gly(II)/Glu(III)Val(IV) 1.39 1.15 0.95
Leu 1.51 1.46 1.00
Phe/Gly(IV) 2.90 n/a (insertion Glu) 2.31
Residue – β-clamp Chain A (peptide associated) Chain B Chain B
D150 0.05 0.82 1.06
R152 0.18 0.81 1.05
G174 0.41 0.45 0.42
H175 0.51 0.87 1.12
  1. The UmuC residue is indicated in bold type. For β-clamp comparisons chain B was employed in measurement and compared with the designated chain.