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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.