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vapB2

Gene
vapB2
Protein
Antitoxin VapB2
Organism
Rickettsia felis (strain ATCC VR-1525 / URRWXCal2)
Length
78 amino acids
Function
Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in E.coli or S.cerevisiae neutralizes the effect of cognate toxin VapC2, partially inhibits the RNase activity of VapC2.
Similarity
Belongs to the VapB family.
Mass
9.01 kDa
Sequence
MNKAKIFMNGQSQAVRLPKEFRFSVKEVSVIPLGKGIVLQPLPNSWKDVFQEMAEISSDDIFPEGRKDLPPQKRKYFE

Gene
vapB2
Protein
Antitoxin VapB2
Organism
Haemophilus influenzae (strain 86-028NP)
Length
77 amino acids
Function
Antitoxin component of a type II toxin-antitoxin (TA) system (PubMed:27672196). Neutralizes the effect of cognate toxin VapC2 but not non-cognate toxin VapC2 (PubMed:27672196).
Similarity
Belongs to the VapB family.
Mass
8.881 kDa
Sequence
MIEASVFMTNRSQAVRLPAEVRFSEEIKKLSVRVSGSDRILSPLNQSWDSFFLNDQAVSDDFMNEREIAFQPEREAL

Gene
vapB2
Protein
Antitoxin VapB2
Organism
Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)
Length
77 amino acids
Function
Antitoxin component of a type II toxin-antitoxin (TA) system. Neutralizes the effect of toxin VapC2 (By similarity).
Similarity
Belongs to the VapB family.
Mass
8.881 kDa
Sequence
MIEASVFMTNRSQAVRLPAEVRFSEEIKKLSVRVSGSDRILSPLNQSWDSFFLNDQAVSDDFMNEREIAFQPEREAL

Gene
vapB2
Protein
Putative antitoxin VapB2
Organism
Pyrococcus abyssi (strain GE5 / Orsay)
Length
76 amino acids
Function
Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC2 (Potential).
Similarity
Belongs to the UPF0330 family.
Mass
8.845 kDa
Sequence
MSKTITIADDVYYELVKMKGNKSFSELLRELIGKKKKGNLDILMIAFGTMSEEEVKEFKKKIKEVEEWINSWTPVS

Gene
vapB2
Protein
Antitoxin VapB2
Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Length
73 amino acids
Function
Antitoxin component of a type II toxin-antitoxin (TA) system. Upon expression in M.smegmatis neutralizes the effect of cognate toxin VapC2. The C-terminal helix of the antitoxin may obstruct the toxin's RNA-binding groove, blocking access to the active sites. Additionally, the C-terminal arginine of the antitoxin may remove Mg(2+) ions from the toxin active sites.
Mass
8.088 kDa
Sequence
MSDVLIRDIPDDVLASLDAIAARLGLSRTEYIRRRLAQDAQTARVTVTAADLRRLRGAVAGLGDPELMRQAWR

Gene
vapB2
Protein
Putative antitoxin MJ0975
Organism
Methanocaldococcus jannaschii (strain ATCC 43067 / DSM 2661 / JAL-1 / JCM 10045 / NBRC 100440)
Length
64 amino acids
Function
Possibly the antitoxin component of a type II toxin-antitoxin (TA) system. Its cognate toxin is VapC2 (Potential).
Similarity
Belongs to the UPF0165 family.
Mass
7.214 kDa
Sequence
MEIVVDAIYEKGVLKLKKSINLPEGCEVEIKIIPKKISEKTFGILKLSDKEIKEILEEIENGGE