Detailed information of TA system TA121243

Bioinformatically predicted

Overview

TA module

• Type: II
• Classification (family/domain): ccdAB/CcdA(antitoxin)
• Location: 4833206..4833756
• Replicon: chromosome
• Accession: NZ_CP038302
• Organism: Escherichia coli O157:H7 strain SS TX 313-1

Toxin (Protein)

• Gene name: ccdB
• Uniprot ID: D3H432
• Locus tag: E4U66_RS24510
• Protein ID: WP_001160975.1
• Coordinates: 4833206..4833520 (-)
• Length: 105 a.a.

Antitoxin (Protein)

• Gene name: ccdA
• Uniprot ID: V0VEX8
• Locus tag: E4U66_RS24515
• Protein ID: WP_000125566.1
• Coordinates: 4833523..4833756 (-)
• Length: 78 a.a.

Genomic Context

Locus tag	Coordinates	Strand	Size (bp)	Protein ID	Product	Description
E4U66_RS24485	4828881..4830167	+	1287	WP_000800457.1	peptidylprolyl isomerase SurA	-
E4U66_RS24490	4830167..4831156	+	990	WP_000241259.1	4-hydroxythreonine-4-phosphate dehydrogenase PdxA	-
E4U66_RS24495	4831153..4831974	+	822	WP_001065380.1	16S rRNA (adenine(1518)-N(6)/adenine(1519)-N(6))- dimethyltransferase RsmA	-
E4U66_RS24500	4831977..4832354	+	378	WP_000610901.1	Co2+/Mg2+ efflux protein ApaG	-
E4U66_RS24505	4832361..4833209	+	849	WP_000257187.1	bis(5'-nucleosyl)-tetraphosphatase (symmetrical) ApaH	-
E4U66_RS24510	4833206..4833520	-	315	WP_001160975.1	CcdB family protein	Toxin
E4U66_RS24515	4833523..4833756	-	234	WP_000125566.1	type II toxin-antitoxin system CcdA family antitoxin	Antitoxin
E4U66_RS24520	4833842..4834321	-	480	WP_000624372.1	type 3 dihydrofolate reductase	-
E4U66_RS24525	4834513..4836375	-	1863	WP_000377184.1	glutathione-regulated potassium-efflux system protein KefC	-
E4U66_RS24530	4836368..4836898	-	531	WP_000600700.1	glutathione-regulated potassium-efflux system oxidoreductase KefF	-
E4U66_RS24535	4837006..4838337	-	1332	WP_001183179.1	MFS transporter	-
E4U66_RS24540	4838395..4838682	-	288	WP_000203741.1	ferredoxin-like protein FixX	-

Associated MGEs

MGE detail	Similar MGEs	Relative position	MGE Type	Cargo ARG	Virulence gene	Coordinates	Length (bp)

Relative position:
(1) inside: TA loci is completely located inside the MGE;
(2) overlap: TA loci is partially overlapped with the MGE;
(3) flank: The TA loci is located in the 5 kb flanking regions of MGE.

Domains

Predicted by InterproScan

Toxin

• Toxin CcdB (2-103)

Antitoxin

• Post-segregation antitoxin CcdA (8-77)

Sequences

Toxin

Protein

• Length: 105 a.a.
• Molecular weight: 11711.76 Da
• Isoelectric Point: 9.8517

>T121243 WP_001160975.1 NZ_CP038302:c4833520-4833206 [Escherichia coli O157:H7]
MQFTVYRSRSRNAAFPFVIDVTSDIIGVINRRIVIPLTPIERFSRIRPPERLNPILLLVDGKEYVLMTHETATVPVNALG
TKFCDASAHRTLIKGALDFMLDGI

Nucleotide

• Length: 315 bp

>T121243 NZ_CP038302:c4833520-4833206 [Escherichia coli O157:H7]
ATGCAATTTACGGTATACCGCAGTCGCAGCAGGAACGCCGCGTTTCCCTTTGTTATCGATGTTACCAGCGACATTATTGG
TGTGATTAATCGCCGTATTGTTATTCCATTAACACCTATTGAACGATTTAGCCGTATTCGCCCACCAGAACGGCTTAACC
CAATCCTTTTACTGGTAGACGGCAAAGAATATGTGCTCATGACGCATGAGACTGCAACTGTTCCAGTTAACGCGCTGGGA
ACGAAATTTTGCGATGCCAGCGCGCACCGAACGTTGATTAAAGGAGCATTAGATTTTATGCTCGACGGGATTTAA

Antitoxin

Protein

• Length: 78 a.a.
• Molecular weight: 8530.53 Da
• Isoelectric Point: 5.8062

>AT121243 WP_000125566.1 NZ_CP038302:c4833756-4833523 [Escherichia coli O157:H7]
MTAKRTTQSVTVTVDRELVNRARDAGLNMSATLTVALNAELKKHAATRWREENAEAIAALNQLADETGCFSDEYRSF

Nucleotide

• Length: 234 bp

>AT121243 NZ_CP038302:c4833756-4833523 [Escherichia coli O157:H7]
ATGACTGCAAAACGTACCACACAAAGTGTGACCGTCACCGTCGACCGTGAGTTAGTCAATCGCGCTCGTGATGCAGGCTT
AAATATGAGCGCCACCCTTACGGTTGCGCTCAATGCTGAACTTAAAAAACATGCAGCAACACGTTGGCGTGAAGAGAACG
CTGAAGCTATCGCTGCGTTAAATCAATTGGCTGATGAAACCGGATGTTTCTCTGATGAGTACCGGAGCTTCTAG

Structures

Antitoxin

• AlphaFold DB: A0A7U9LTM9