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On One Page

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Gene |

Product(s) |

Expression|

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Standard Name	mltB
Gene Synonym(s)	ECK2696, b2701, JW2671^[1], JW2671
Product Desc.	membrane-bound lytic murein transglycosylase B^[2]^[3] Membrane-bound lytic transglycosylase B, murein hydrolase; periplasmic OM-attached lipoprotein; Slt35, soluble lytic transglycosylase^[4]
Product Synonyms(s)	membrane-bound lytic murein transglycosylase B^[1], B2701^[2]^[1], MltB^[2]^[1] , ECK2696, JW2671, b2701
Function from GO	<GO_nr />
Knock-Out Phenotype
Regulation/Expression	transcription unit(s): mltB^[2]
Regulation/Activity
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Notes

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MltB cleaves the glycosidic bonds between the N-acetylmuramic acid and N-acetylglucosamine residues in murein. Slt35 is a soluble form of MltB with the lipid-anchored N-terminus cleaved after Phe39 during purification. The N-terminus of Slt35 has been identified by protein sequencing, but Slt35 is is an artifact of proteolysis during purification. First 18 aa are a type II signal peptide.^[4]

Gene

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Nomenclature

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See Help:Gene_nomenclature for help with entering information in the Gene Nomenclature table.

Standard name	mltB
Mnemonic	Membrane-bound lytic transglycosylase B
Synonyms	ECK2696, b2701, JW2671^[1], JW2671
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Notes

Location(s) and DNA Sequence

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<protect> See Help:Gene_location for help entering information in the Gene Location and DNA sequence table.

Strain	Map location	Genome coordinates	Genome browsers	Sequence links
MG1655	60.83 minutes	MG1655: 2823598..2822513 <gbrowseImage> name=NC_000913:2822513..2823598 source=MG1655 preset=GeneLocation </gbrowseImage>	EcoCyc GBrowse(MG1655)	FASTA Dump EcoCyc Sequence Dump
REL606		NC_012967: 2720435..2719350 <gbrowseImage> name=NC_012967:2719350..2720435 source=REL606 preset=GeneLocation </gbrowseImage>	GBrowse (REL606)	FASTA Dump
BW2952		NC_012759: 2708325..2709410 <gbrowseImage> name=NC_012759:2708325..2709410 source=BW2952 preset=GeneLocation </gbrowseImage>	GBrowse (BW2952)	FASTA Dump
W3110		W3110: 2824232..2823147 <gbrowseImage> name=NC_007779:2823147..2824232 source=W3110 preset=GeneLocation </gbrowseImage>	GBrowse(W3110)	FASTA Dump
DH10B		DH10B: 2916140..2915055 <gbrowseImage> name=NC_010473:2915055..2916140 source=DH10B preset=GeneLocation </gbrowseImage>	GBrowse(DH10B)	FASTA Dump
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Notes

Sequence Features

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See Help:Gene_sequence_features for help in entering sequence features in EcoliWiki.

Feature Type	Strain	Genomic Location	Evidence	Reference	Notes
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Notes

Alleles and Phenotypes

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See Help:Gene_alleles for how to enter or edit alleles and phenotypes in EcoliWiki.

Allele	Nt change(s)	AA change(s)	Reference	Availability	Comments
ΔmltB (Keio:JW2671)	deletion	deletion	PMID:16738554	Shigen CGSC10107^[5]
mltB::Tn5KAN-I-SceI (FB20886)	Insertion at nt 333 in Plus orientation		PMID:15262929	E. coli Genome Project:FB20886	contains pKD46
mltB::Tn5KAN-I-SceI (FB20887)	Insertion at nt 333 in Plus orientation		PMID:15262929	E. coli Genome Project:FB20887	does not contain pKD46
ΔmltB776::kan			PMID:16738554	CGSC:101882
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Notes

Genetic Interactions

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Interactor	Interaction	Allele	Score(s)	Reference(s)	Accessions	Notes
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Notes

Genetic Resources

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See Help:Gene_resources for help entering information into the Genetic Resources table.

Resource	Resource Type	Source	Notes/Reference
	Plasmid clone	Shigen	PMID:16769691 Status: Primer 1: Primer 2:
23B7	Kohara Phage	Genobase	PMID:3038334
9G10	Kohara Phage	Genobase	PMID:3038334
pheA18::Tn10	Linked marker	CAG12158 = CGSC7421^[5]	est. P1 cotransduction: % ^[6]
srlD3131::Tn10	Linked marker	CAG18642 = CGSC7423^[5]	est. P1 cotransduction: 90% ^[6] Synonyms:zfh-3131::Tn10, zfi-3131::Tn10
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Notes

Accessions in Other Databases

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
EcoCyc	EcoCyc:G7410	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG12699	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003977	Escherichia coli str. K-12 substr. MG1655
NCBI (EcoliWiki Page)	GeneID:947184	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB2561	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0008885	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Product(s)

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Nomenclature

See Help:Product_nomenclature for help entering or editing information in this section of EcoliWiki.

Standard name	MltB
Synonyms	membrane-bound lytic murein transglycosylase B^[1], B2701^[2]^[1], MltB^[2]^[1] , ECK2696, JW2671, b2701
Product description	membrane-bound lytic murein transglycosylase B^[2]^[3] Membrane-bound lytic transglycosylase B, murein hydrolase; periplasmic OM-attached lipoprotein; Slt35, soluble lytic transglycosylase^[4]
EC number (for enzymes)	3.2.1.-^[1]
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Notes

Function

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<protect> Gene Ontology
See Help:Gene_ontology for help entering or editing GO terms and GO annotations in EcoliWiki.

Qualifier	GO ID	GO term name	Reference	Evidence Code	with/from	Aspect	Notes	Status
	GO:0005886	plasma membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-1003	C	Seeded from EcoCyc (v14.0)	complete
	GO:0009279	cell outer membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0998	C	Seeded from EcoCyc (v14.0)	complete
	GO:0016020	membrane	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0472	C	Seeded from EcoCyc (v14.0)	complete
	GO:0016829	lyase activity	GOA:spkw SP_KW:GO_REF:0000004	IEA: Inferred from Electronic Annotation	SP_KW:KW-0456	F	Seeded from EcoCyc (v14.0)	complete
	GO:0016837	carbon-oxygen lyase activity, acting on polysaccharides	GOA:spec GO_REF:0000003	IEA: Inferred from Electronic Annotation	EC:4.2.2	F	Seeded from EcoCyc (v14.0)	complete
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Interactions See Help:Product_interactions for help entering or editing information about gene product interactions in this section of EcoliWiki.

Partner Type	Partner	Notes	References	Evidence
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Notes

Localization

See Help:Product_localization for how to add or edit information in this section of EcoliWiki.

Compartment	Description	Evidence	Reference/Source	Notes
Outer membrane		PMID:15174130	EchoLocation:mltB
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Notes

Structure and Physical Properties

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<protect> Physical Properties See Help:Product_physical_properties for help entering or editing information about the physical properties of this gene product.

Name
Sequence	at EcoCyc MFKRRYVTLL PLFVLLAACS SKPKPTETDT TTGTPSGGFL LEPQHNVMQM GGDFANNPNA QQFIDKMVNK HGFDRQQLQE ILSQAKRLDS VLRLMDNQAP TTSVKPPSGP NGAWLRYRKK FITPDNVQNG VVFWNQYEDA LNRAWQVYGV PPEIIVGIIG VETRWGRVMG KTRILDALAT LSFNYPRRAE YFSGELETFL LMARDEQDDP LNLKGSFAGA MGYGQFMPSS YKQYAVDFSG DGHINLWDPV DAIGSVANYF KAHGWVKGDQ VAVMANGQAP GLPNGFKTKY SISQLAAAGL TPQQPLGNHQ QASLLRLDVG TGYQYWYGLP NFYTITRYNH STHYAMAVWQ LGQAVALARV Q
Length	361
Mol. Wt	40.255 kDa
pI	9.4 (calculated)
Extinction coefficient	69,330 - 69,455 (calc based on 17 Y, 8 W, and 1 C residues)
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Domains/Motifs/Modification Sites

See Help:Product_domains_motifs for help entering or editing information in this section of EcoliWiki.

Type	Residues	Description	Notes	References
motif	1-18	UniProt Manual:Signal Peptides	UniProt:P41052
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<motif_map/>

Structure
See Help:Product_structure for help entering or editing information in this section of EcoliWiki.

Structures

<beststructure> gene=mltB taxon=562,83333 </beststructure>

Models

View models at:

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Structure figures

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Notes

Gene Product Resources

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See Help:Product_resources for help with entering or editing information in this section of EcoliWiki.

Resource type	Source	Notes/Reference
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Notes

Accessions in Other Databases

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
NCBI (Protein) (EcoliWiki Page)	GI:16130608	Escherichia coli str. K-12 substr. MG1655
NCBI (Protein) (EcoliWiki Page)	GeneID:947184	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0008885	Escherichia coli str. K-12 substr. MG1655
UniProt (EcoliWiki Page)	UniProtKB/Swiss-Prot:P41052	Escherichia coli str. K-12 substr. MG1655
EcoCyc	EcoCyc:G7410	Escherichia coli str. K-12 substr. MG1655
EcoGene	EcoGene:EG12699	Escherichia coli str. K-12 substr. MG1655
NCBI (Gene) (EcoliWiki Page)	GeneID:947184	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003977	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB2561	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Expression

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Overview

This is a placeholder for a summary statement on how expression of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Cellular Levels

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See Help:Cellular levels

Molecule	Organism or Strain	Value	Units	Experimental Conditions	Assay used	Notes	Reference(s)
Protein	Ecoli K-12	0.157+/-0.051	Molecules/cell	Medium: Temperature (°C): Doubling time (min): Growth Rate(min): * Growth phase: other: *		Single Molecule Fluorescence	PMID:20671182
mRNA	Ecoli K-12	0.017050691	Molecules/cell	Medium: Temperature (°C): Doubling time (min): Growth Rate(min): * Growth phase: other: *		by RNA_Seq	PMID:20671182
Protein	E. coli K-12 MG1655	926	molecules/cell/generation	Medium: MOPS Complete Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling		PMID: 24766808
Protein	E. coli K-12 MG1655	274	molecules/cell/generation	Medium: MOPS Minimal Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling		PMID: 24766808
Protein	E. coli K-12 MG1655	220	molecules/cell/generation	Medium: MOPS Complete without Methionine Temperature (°C): 37 Doubling time (min): *Growth phase: OD: other:	Ribosome Profiling		PMID: 24766808
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Notes

Transcription and Transcriptional Regulation

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See Help:Expression_transcription for help entering or editing information in this section of EcoliWiki.

Transcription unit(s)
mltB
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Figure courtesy of RegulonDB

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Notes

This is a placeholder for a summary statement about how transcription of this gene is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Translation and Regulation of Translation

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<protect><gbrowseImage> name=NC_000913:2823578..2823618 source=MG1655 flip=1 type=Gene+DNA_+Protein preset=Nterminus </gbrowseImage> This picture shows the sequence around the N-terminus.

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Notes

This is a placeholder for a summary statement about how translation of this gene product is regulated. You can help EcoliWiki by becoming a user and writing/editing this statement.

Turnover and Regulation of Turnover

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Notes

This is a placeholder for a summary statement about turnover of this gene product. You can help EcoliWiki by becoming a user and writing/editing this statement.

Experimental

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<protect> Mutations Affecting Expression See Help:Expression_mutations for help entering or editing information in this section of EcoliWiki.

Allele Name	Mutation	Phenotype	Reference
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Expression Studies See Help:Expression_studies for help entering or editing information in this section of EcoliWiki.

Type	Reference	Notes
microarray	GEO Profiles:b2701 (EcoliWiki Page)	NCBI GEO profiles for mltB
microarray	GenExpDB:b2701 (EcoliWiki Page)	Summary of data for mltB from multiple microarray studies
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Expression Resources See Help:Expression_resources for help entering or editing information in this section of EcoliWiki.

Resource Name	Resource Type	Description	Source	Notes
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Notes

Accessions Related to mltB Expression

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See Help:Gene_accessions for help with entering information into the Gene Accessions table.

Database	Accession	Notes
EcoCyc	EcoCyc:G7410	Escherichia coli str. K-12 substr. MG1655
EchoBASE	EchoBASE:EB2561	Escherichia coli str. K-12 substr. MG1655
EcoliGenExpDB (EcoliWiki Page)	EcoliGenExpDB:b2701
EcoGene	EcoGene:EG12699	Escherichia coli str. K-12 substr. MG1655
RegulonDB	RegulonDB:ECK120003977	Escherichia coli str. K-12 substr. MG1655
ASAP	ASAP:ABE-0008885	Escherichia coli str. K-12 substr. MG1655
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Notes

Links

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Name	URL	Comments
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Evolution

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Homologs in Other Organisms

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See Help:Evolution_homologs for help entering or editing information in this section of EcoliWiki.

Organism	Homologs (Statistics)	Comments
Apis mellifera	ENSAPMP00000017068 (score: 1.000; bootstrap: 100%)	From Inparanoid:20070104
Shigella flexneri	MLTB	From SHIGELLACYC
E. coli O157	MLTB	From ECOO157CYC
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Notes

Families

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<protect> See Help:Evolution_families for help entering or editing information in this section of EcoliWiki.

Database	Accession	Notes
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Notes

Links

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Name	URL	Comments
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References

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See Help:References for how to manage references in EcoliWiki.

↑ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 ^1.5 ^1.6 ^1.7 ^1.8 Riley, M. et al. (2006) Nucleic Acids Res 34:1-6 (corrected supplemental data from B. Wanner)
↑ ^2.0 ^2.1 ^2.2 ^2.3 ^2.4 ^2.5 ^2.6 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^3.0 ^3.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
↑ ^4.0 ^4.1 ^4.2 EcoGene: Rudd, KE (2000) EcoGene: a genome sequence database for Escherichia coli K-12. Nucleic Acids Res 28:60-4.
↑ ^5.0 ^5.1 ^5.2 CGSC: The Coli Genetics Stock Center
↑ ^6.0 ^6.1 The Tn10 insertion sites determined by Nichols et al. 1998 (PMID:9829956) were reannotated by alignment with E. coli K-12 genome sequence (GenBank accession NC_000913). P1 contransduction frequencies were calculated using the formula of Wu (PMID:5338813).

mltB:On One Page

Quickview

Notes

Gene

Nomenclature

Notes

Location(s) and DNA Sequence

Notes

Sequence Features

Notes

Alleles and Phenotypes

Notes

Genetic Interactions

Notes

Genetic Resources

Notes

Accessions in Other Databases

Notes

Links

Product(s)

Nomenclature

Notes

Function

Notes

Localization

Notes

Structure and Physical Properties

Structure figures

Notes

Gene Product Resources

Notes

Accessions in Other Databases

Notes

Links

Expression

Overview

Cellular Levels

Notes

Transcription and Transcriptional Regulation

Notes

Translation and Regulation of Translation

Notes

Turnover and Regulation of Turnover

Notes

Experimental

Notes

Accessions Related to mltB Expression

Notes

Links

Evolution

Homologs in Other Organisms

Notes

Families

Notes

Links

References

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