From: Construction of recB-recD genetic fusion and functional analysis of RecBDC fusion enzyme in Escherichia coli
rec alleles*
λ phage
T4 phage
P1 phage
P2 phage
λ red-
gam-χ0
gam-χ+
λ red+
gam+
gene 2
pr(-)
pr(+)
rec BCD
small
medium
large
+
-
rec BD2728
rec BD2729