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Table 1 List of core gene and accessory components of Pantoea ananatis the type VI secretion system (T6SS) and putative function (Pukatzki et al .,[17], Zheng and Leung[28], Filloux et al .,[18], Bingle et al .,[23])

From: Comparative genomics of type VI secretion systems in strains of Pantoea ananatisfrom different environments

Gene

Homologues

COG classification

Putative function

tssI

vgrG

COG3501

Effector/structure: forms the T6SS piercing structure

tssD

hcp

COG3157

Effector/Structure: Homologous to T4 phage tube

tssC

impC, vipB

COG3517

Homolous to T4 phage contractile tail sheath proteins

tssB

impB,vipA

COG3516

Homolous to T4 phage contractile tail sheath proteins

tssH

clpV ,vasG

COG0542

ATPase /effector chaperon/recycling TssB/C

tssM

vasK , icmF

COG3523

Anchoring T6SS to cell wall

tssL

ompA/dotU

COG3455

Anchoring T6SS to cell wall

tssJ

vasD ,lip

COG3521

Anchoring T6SS to cell wall

tssE

impF,vasS

COG3518

Essential baseplate protein similar toT4 phage gp25 proteins

tssG

impH ,vasB

COG3520

Unknown function

tssF

impG ,vasA

COG3519

Unknown function

tssA

impA/vasJ

COG3515

Unknown function

tssK

impJ ,vasE

COG3522

Unknown function

tagB

BB0796

COG1357

Protein with a pentapeptide_4 domain, unknown function

tagAB

BB0795

COG1357

Protein with a pentapeptide_4 domain, unknown function

tagE

pknA/ppkA

COG0515

Serine/threonine kinase, post-translational regulation

tagF

impM, sciT

COG3913

Unknown function

tagG

pppA

COG0631

Serine/threonine phosphatase, post-translational regulation

tagH

impI

COG3456

FHA domain-containing protein, post-translational regulation

tagJ

impE

COG4455

Unknown function

tagL

c3389

COG2885/COG1360

Protein with an OmpA_C-like domain, unknown function

-

VCA0105

-

Protein with a PAAR_motif associated with VgrG piercing structure

-

-

COG3409

Protein with a peptidoglycan binding domain, putative effector

-

L376_02862

-

Protein with a peptidase M_23 domain, putative endopeptidase effector

-

Ebc_4130

-

Protein with an esterase_lipase domain, unknown function

  1. Tss (type VI secretion) genes refers to the T6SS gene nomenclature propose by Shalom et al. [50]. These genes have been shown to be essential for secretion of at least two proteins, Hcp and VgrG and are conserved in the genome sequence of over 100 different bacteria encoding a T6SS similar to the prototype described by Pukatzki et al. [17].
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BMC Genomics

ISSN: 1471-2164

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