Detailed information NTG0000454

Experimentally validated

Overview

• Name: comX/sigX
• Type: Regulator
• Locus tag: SSU_RS00080
• Genome accession: NC_012925
• Coordinates: 15967..16437 (+)
• Length: 156 a.a.
• NCBI ID: WP_011921639.1
• Uniprot ID: A0A123YDQ1
• Organism: Streptococcus suis P1/7
• Function: activate transcription of late competence genes Competence regulation

Function

Induction of competence was dependent on ComX, a sigma factor that controls the streptococcal late competence regulon, extracellular addition of a comX-inducing peptide (XIP), and ComR, a regulator of comX. XIP was identified as an N-terminally truncated variant of ComS.

Genomic Context

Location: 10967..21437

Locus tag	Gene name	Coordinates (strand)	Size (bp)	Protein ID	Product	Description
SSU_RS00065 (SSU0013)	tilS	11816..13084 (+)	1269	WP_011921636.1	tRNA lysidine(34) synthetase TilS	-
SSU_RS00070 (SSU0014)	hpt	13092..13634 (+)	543	WP_011921637.1	hypoxanthine phosphoribosyltransferase	-
SSU_RS00075 (SSU0015)	ftsH	13656..15629 (+)	1974	WP_011921638.1	ATP-dependent zinc metalloprotease FtsH	-
SSU_RS00080 (SSU0016)	comX/sigX	15967..16437 (+)	471	WP_011921639.1	sigma-70 family RNA polymerase sigma factor	Regulator

Regulatory network

Positive effect      

Negative effect

Regulator	Target	Regulation
comX/sigX	late competence genes	positive effect
comX/sigX	late competence genes	positive effect
comR	comX/sigX	positive effect
comS	comX/sigX	positive effect

Sequence

Protein

• Length: 156 a.a.
• Molecular weight: 19099.01 Da
• Isoelectric Point: 8.9059

>NTDB_id=454 SSU_RS00080 WP_011921639.1 15967..16437(+) (comX/sigX) [Streptococcus suis P1/7]
MEFEKVYASVKGIVNKARKEFYIKLWDRDDWEQEGMMTLFELLEAQPWLVDEQVQLYCYFKVKFRNRIKDRIRKQESQKR
KFDRMPHEDIYELSHAIQSPGLINDELLMLRGALRDYRKNLSNDQLDKYEKLISGQCFNGRREMIRDLQIHLKDFR

Nucleotide

• Length: 471 bp

>NTDB_id=454 SSU_RS00080 WP_011921639.1 15967..16437(+) (comX/sigX) [Streptococcus suis P1/7]
ATGGAATTCGAAAAAGTGTACGCAAGCGTCAAAGGTATTGTAAACAAGGCTCGAAAAGAGTTTTACATTAAACTATGGGA
TCGAGATGATTGGGAACAAGAAGGAATGATGACCTTGTTTGAATTGTTGGAAGCTCAACCGTGGCTAGTTGATGAACAAG
TTCAATTATATTGTTATTTTAAAGTCAAGTTCAGAAATCGAATCAAAGATCGTATCCGCAAACAGGAAAGTCAAAAACGC
AAGTTTGACCGTATGCCACATGAAGATATTTACGAATTATCTCACGCAATACAATCACCGGGATTGATAAACGATGAATT
ATTAATGTTGAGAGGTGCCTTGAGAGATTATCGAAAAAATCTGAGCAATGATCAACTTGATAAATACGAAAAATTAATTA
GCGGACAATGTTTTAATGGTCGCCGTGAAATGATACGTGATTTACAAATTCATTTGAAAGACTTTCGCTAA

Domains

No domain identified.

3D structure

• AlphaFold DB: A0A123YDQ1

Similar proteins

Only experimentally validated proteins are listed.

Protein	Organism	Identities (%)	Coverage (%)	Ha-value
comX/sigX	Streptococcus suis isolate S10	100	100	1
comX/sigX	Streptococcus suis D9	99.359	100	0.994
comR/comR1	Streptococcus gordonii str. Challis substr. CH1	49.032	99.359	0.487
comR/comR2	Streptococcus gordonii str. Challis substr. CH1	49.032	99.359	0.487
comX/comX2	Streptococcus pneumoniae TIGR4	46.358	96.795	0.449
comX/comX1	Streptococcus pneumoniae TIGR4	46.358	96.795	0.449
comX/sigX/comX2/sigX2	Streptococcus mitis NCTC 12261	45.752	98.077	0.449
comX/sigX/comX1/sigX1	Streptococcus mitis SK321	45.098	98.077	0.442
comX/sigX/comX2/sigX2	Streptococcus mitis SK321	45.098	98.077	0.442
comX/comX2	Streptococcus pneumoniae R6	45.695	96.795	0.442
comX/comX2	Streptococcus pneumoniae Rx1	45.695	96.795	0.442
comX/comX1	Streptococcus pneumoniae Rx1	45.695	96.795	0.442
comX/comX2	Streptococcus pneumoniae D39	45.695	96.795	0.442
comX/comX1	Streptococcus pneumoniae D39	45.695	96.795	0.442
comX/comX1	Streptococcus pneumoniae R6	45.695	96.795	0.442
comX/sigX/comX1/sigX1	Streptococcus mitis NCTC 12261	44.444	98.077	0.436
comX/sigX	Streptococcus mutans UA159	43.226	99.359	0.429
comX/sigX/comX1/sigX1	Streptococcus pyogenes MGAS315	40.645	99.359	0.404
comX/sigX/comX2/sigX2	Streptococcus pyogenes MGAS315	40.645	99.359	0.404
comX	Streptococcus thermophilus LMD-9	40.523	98.077	0.397
comX	Streptococcus thermophilus LMG 18311	40.523	98.077	0.397
comX	Streptococcus sobrinus strain NIDR 6715-7	40.523	98.077	0.397
comX/sigX/comX1/sigX1	Streptococcus pyogenes MGAS8232	40	99.359	0.397
comX/sigX/comX2/sigX2	Streptococcus pyogenes JRS4	40	99.359	0.397
comX/sigX/comX2/sigX2	Streptococcus pyogenes MGAS8232	40	99.359	0.397
comX/sigX/comX1/sigX1	Streptococcus pyogenes JRS4	40	99.359	0.397
comX/sigX	Streptococcus infantarius subsp. infantarius ATCC BAA-102	38.854	100	0.391
comX	Streptococcus salivarius SK126	39.869	98.077	0.391
comX/sigX	Streptococcus salivarius strain HSISS4	39.869	98.077	0.391

References

• [1]: Edoardo Zaccaria et al. (2014) Control of competence for DNA transformation in streptococcus suis by genetically transferable pherotypes. PloS One 9(6):e99394. [PMID: 24968201]