WebSep 17, 2024 · Plasmids belonging to the incompatibility group (Inc)HI are widespread in Enterobacteriaceae and most of them express multiple antibiotic resistance determinants. They play a relevant role in the recent spread of colistin resistance. We present in this report novel findings regarding IncHI plasmid conjugation. WebOct 10, 2014 · The pKOX_R1 is a chimeric plasmid, containing replication initiation protein genes of at least two replicon types: IncA/C and a novel IncH group. The sequence analyses of the IncH tra genes present in pKOX_R1 indicates that it lacks, in addition to the trhR and trhY coding sequences, other crucial IncHI genes such as trhA , coding for the major ...
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WebJul 7, 2008 · IncHI plasmids are the only known plasmids in human pathogens that are temperature sensitive for transfer. Using R27 sequence data and transposon mutagenesis, the transfer determinants responsible for the spread of H-plasmids were identified ( Rooker et al. , 1999 ; Sherburne et al ., 2000 ). WebThe common regions of the IncHI plasmids contain genes that are essential for plasmid replication, maintenance, and transmission (which might define the general backbone for the group), as well as an extensive series of homologous core genes. Acquired DNA, that is not common among plasmids core, includes class 1 integrons,
WebJun 1, 2024 · IncHI plasmids are typically large, often >200 kb in size. Comparative analysis of some of the IncHI1 plasmids shows that these plasmids are very diverse in terms of genetic structure and have accumulated a number of accessory resistance regions [6], [7]. WebOct 8, 2024 · IncA/C plasmids have been isolated in Salmonellathat contain up to 10 AR genes for more than five classes of antibiotics. The most common AR genes carried by IncA/C are strAB (aminoglycosides), sul2 (sulfonamides), tetAR (tetracycline), blaCMY-2(β-lactams), and floR (chloramphenicols).
WebMar 1, 2008 · Abstract Conjugative plasmids have evolved entry exclusion mechanisms to inhibit redundant DNA transfer from donor cells into recipients harboring isogenic or closely related plasmids. This exclusion phenomenon has been documented in the incompatibility H group (IncH) plasmid R27. WebThe common regions of the IncHI plasmids contain genes that are essential for plasmid replication, maintenance, and transmission (which might define the general backbone for the group), as well as an extensive series of homologous core genes. Acquired DNA, that is not common among plasmids core, includes class 1 integrons,
WebEvidence is provided that IncHI1/pST17 is an important carrier for the tet(X4) spread in Enterobacteriaceae species, and these transmission mechanisms may perform in the environment. The tigecycline resistance gene tet(X4) was widespread in various bacteria. However, limited information about the plasmid harboring the tet(X4) gene spread among …
WebComparative analysis of the pNDM-MAR sequence identified a novel type of IncH plasmid. This study underlines the diversity of genetic vehicles involved in the spread of the bla(NDM-1) gene. Plasmid pNDM-MAR differed significantly from all … the price is right 3 strikes gameWebJun 1, 2024 · Introduction. Plasmids of the H incompatibility (IncH) complex can be divided into two major Inc groups, IncHI and IncHII [1]. Incompatibility interactions between IncHI and IncHII can be explained by a negative control model: the IncHII repressor binds more strongly to the IncHI operator site than the IncHI repressor binds to the IncHII operator; … sighting of jesusWebMar 30, 2024 · IncHI plasmid is an important vector for the tet(X4) gene, which belongs to the H incompatibility (IncH) group, including IncHI1 to IncHI5 subgroups (Phan and Wain, 2008; Cui et al., 2024). The IncHI1 plasmid is a conjugative plasmid … sighting of bigfootWebMay 3, 2016 · IncHI plasmids account for multiple antimicrobial resistance in Salmonella and other enterobacterial genera. These plasmids are generally very stable in their bacterial hosts. R27 is the... the price is right 4/25/2022WebMay 1, 2024 · The I-complex plasmids contain incompatibility groups I, K, B and Z, which share morphological and serological similarities in their pili. 52 IncI, or MOB P according to relaxase typing, is a group of low-copy-number, narrow-host-range, conjugative plasmids, which vary in size from 50 to 250 kb. 19 A typical feature for this plasmid group is the … the price is right 3 strikes winWebOct 10, 2014 · IncHI plasmid conjugation is thermodependent and all transfer-related genes are encoded in six operons ( tra operons). Using R27, the prototype of IncHI1 plasmids, we reported that the plasmid-encoded factor HtdA represses four of the six tra operons. sighting of new moonWebThe IncH family plasmids can produce the H-pilus, a long and flexible conjugation pilus similar to the F-pilus. Here, the pSIM-1-BJ01 possess two transfer regions, carrying the H-pilus assembly and transfer related protein genes ( trhL, trhE, traK, traB, dsbC, traV, traC, trhZ, trhO, htdA, htdK, traW, traU, traN, traD, traI, traF, traH and traG ). the price is right 4/27/2018