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. Author manuscript; available in PMC: 2018 Jul 7.
Published in final edited form as: Environ Microbiol. 2017 Jul 7;19(7):2831–2842. doi: 10.1111/1462-2920.13808

Table 1. Sequence-specificity of Metallosphaera rRNA degrading VapCs.

Consensus motifs were determined by aligning cleavage sites identified from primer extension using MS2 bacteriophage RNA. Sequences 5′ → 3′.

Toxin Alignment # Motifs in rRNA

16S 23S
VapC4 (Msed_0899)

Cleavage sites M5 A A G A A G U U

M5 U C G A A G A C

Consensus motifs 1 G A A G 6 27

VapC7 (Msed_1214)

Cleavage sites S1 C U A G G A G G

M8 C A A G A A G

M7 G A A G A C A

M7 A A A G A A G

E2 A U A G A C U

Consensus motifs 1 A A G A 4 9


2 U A G A 3 7


3 A A G G A 4 4


4 U A G G A 1 1

VapC8 (Msed_1245)

Cleavage sites S1 C G G A A U U C

S2 U U U A A U G U

S2 G C U A A U G C

Consensus motifs 1 U A A U 3 4


2 G A A U 7 9