tlrB
168
23S rRNA (guanine-N(1)-)-methyltransferase, confers resistance against the macrolide antibiotic tylosin (produced by Streptomyces fradiae)
locus
BSU_39010
Molecular weight
31.32 kDa
pI
8.13
function
resistance against tylosin
product
23S rRNA (guanine-N(1)-)-methyltransferase
essential
no
synonyms
tlrB, yxjB
Outlinks
Genomic Context
Categories containing this gene/protein
List of homologs in different organisms, belongs to COG2226 (Galperin et al., 2021)
This gene is a member of the following regulons
Gene
Coordinates
4,004,288 4,005,136
The protein
Catalyzed reaction/ biological activity
methylates G748 of 23S rRNA in the peptide exit tunnel [pubmed|31719185]
Protein family
[wiki|Methyltransferase superfamily] (according to UniProt)
Structure
[PDB|1P91] (from E. coli, 31% identity) [pubmed|14999102]
[AF|P42313]
Expression and Regulation
Operons
genes
[gene|65253C69BAE9679FE4475BFF76BBABBB0FA70C30|tlrB]
description
[Pubmed|10746760]
regulatory mechanism
[protein|4910F1E5BAF274C828FD92C410A1B86FB1D358CE|tlrBL]: attenuation, [pubmed|31719185], in [regulon|protein:4910F1E5BAF274C828FD92C410A1B86FB1D358CE|tlrBL regulon]
additional information
term-seq has identified a potential novel regulatory RNA element including an intrinsic transcription terminator upstream of ''yxjB'' [Pubmed|27120414]
Biological materials
Mutant
MGNA-B726 (yxjB::erm), available at the [https://shigen.nig.ac.jp/bsub/resource/strainGeneDisrupted/detail/1725 NBRP B. subtilis, Japan]
1A995 ( ''yxjB''::''spec''), [Pubmed| ], available at [http://pasture.asc.ohio-state.edu/BGSC/getdetail.cfm?bgscid=1A995&Search=1A995 BGSC]
BKE39010 ([gene|65253C69BAE9679FE4475BFF76BBABBB0FA70C30|tlrB]::erm trpC2) available at [http://bgsc.org/getdetail.php?bgscid=BKE39010 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATGATAAAAAACACCCCAT, downstream forward: _UP4_TGAATGGTAGAGGAAAGCTC
BKK39010 ([gene|65253C69BAE9679FE4475BFF76BBABBB0FA70C30|tlrB]::kan trpC2) available at [http://bgsc.org/getdetail.php?bgscid=BKK39010 BGSC], [Pubmed|28189581], upstream reverse: _UP1_CATGATAAAAAACACCCCAT, downstream forward: _UP4_TGAATGGTAGAGGAAAGCTC
References
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Time of last update: 2025-05-08 08:38:54
Author of last update: Jstuelk