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. 2011 Aug 18;7(8):e1002191. doi: 10.1371/journal.ppat.1002191

Table 2. Distribution of type three secretion systems encoded by SPI-1 (T3SS-1) and SPI-2 (T3SS-2) and their secreted effectors in the salmonellae.

Salmonella species/serotypes
S.bongori 12419 S. Typhi CT18 S.Typhimurim LT2 S. Enteritidis P125109 S. Gallinarum 287/91 S.Cholerasuis SC-B67 S. arizonae CDC346-86
Secretion system T3SS effector systems
Presence/absence
T3SS-1 + + + + + + +
T3SS-2 + + + + + +
T3SS effector proteins
Genomic Location Secreted by Gene name Presence/absence
øGifsy-1 SPI-2 gogB + +
SPI-5 SPI-2 pipB + + + + +
ROD SPI-2 pipB2 + + + + Ψ +
BB SPI-2 sifA + + + + + +
BB SPI-2 steA + + + + +
BB SPI-2 sifB + + + + Ψ + +
BB SPI-2 steB + + + +
BB SPI-2 steC + + + + +
BB SPI-1 & 2 slrP + + Ψ + + Ψ + Ψ + Ψ +
BB SPI-1 sopA * + Ψ + + + Ψ + Ψ
SPI-2 SPI-2 spiC (ssaB) + + + + + +
SPI-5 SPI-1 sopB (sigD) + + + + + + +
BB SPI-1 sopD + + + + + + +
BB SPI-2 sopD2 + Ψ + + + + +
øSopE and øSE12 SPI-1 sopE + + +
BB SPI-1 sopE2 + + Ψ + + + + +
SPI-1 SPI-1 avrA + + + +
SPI-1 SPI-1 sptP + Ψ + + + + + + Ψ
SPI-1 SPI-1 sipA (sspA) + + + + + + +
SPI-1 SPI-1 sipB (sspB) + + + + + + +
SPI-1 SPI-1 sipC (sspC) + + + + + + +
SPI-2 SPI-2 sseF + + + + + +
SPI-2 SPI-2 sseG + + + + + +
BB SPI-2 sseL + + + + + +
øGifsy2 SPI-2 sseI (srfH) + + + Ψ +
BB SPI-2 sseJ + Ψ + + + + +
ROD SPI-2 sseK1 + + + Ψ + +
ROD SPI-2 sseK2 +
øSE20 - sseK3 −& +
ROD SPI-1 & 2 sspHI +@
SPI-12 SPI-2 sspH2 + + + + Ψ + Ψ +
pSLT plasmid SPI-2 spvB + + + +

+, present; -, absent; Ψ, pseudogene;

*, see sboH: a chimera of sopA and a Non-LEE-encoded Type III secretion system effector gene nleH1; BB, chromosomal backbone; ROD, region of difference/genomic island;

@, of limited distribution in S. Typhimurium [89]; &, carried on phage ST64B of other S. Typhimurium strains [90].