Skip Header

You are using a version of browser that may not display all the features of this website. Please consider upgrading your browser.
Due to a server migration, the UniProt 'ID mapping', 'Peptide search' and 'community bibliography submission' tools will not be available on the 19th April 2021 during the morning (EST).

UniProtKB - P0AB58 (LAPB_ECOLI)

Entry version 109 (10 Feb 2021)
Sequence version 1 (11 Oct 2005)
Previous versions | rss
Add a publicationFeedback
Protein

Lipopolysaccharide assembly protein B

Gene

lapB

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Modulates cellular lipopolysaccharide (LPS) levels by regulating LpxC, which is involved in lipid A biosynthesis. May act by modulating the proteolytic activity of FtsH towards LpxC. May also coordinate assembly of proteins involved in LPS synthesis at the plasma membrane.UniRule annotation2 Publications

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi357IronUniRule annotation1 Publication1
Metal bindingi360IronUniRule annotation1 Publication1
Metal bindingi371IronUniRule annotation1 Publication1
Metal bindingi374IronUniRule annotation1 Publication1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Biological processStress response
LigandIron, Metal-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		EcoCyc:EG12691-MONOMER

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Lipopolysaccharide assembly protein B1 PublicationUniRule annotation
Alternative name(s):
Lipopolysaccharide regulatory proteinUniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:lapB1 PublicationUniRule annotation
Synonyms:yciM
Ordered Locus Names:b1280, JW1272
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiEscherichia coli (strain K12)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri83333 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000000318 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome
  • UP000000625 Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Topology

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the extent of a membrane-spanning region of the protein. It denotes the presence of both alpha-helical transmembrane regions and the membrane spanning regions of beta-barrel transmembrane proteins.<p><a href='/help/transmem' target='_top'>More...</a></p>Transmembranei1 – 20HelicalUniRule annotation1 PublicationAdd BLAST20
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular%5Flocation%5Fsection">'Subcellular location'</a> section describes the subcellular compartment where each non-membrane region of a membrane-spanning protein is found.<p><a href='/help/topo_dom' target='_top'>More...</a></p>Topological domaini21 – 389CytoplasmicUniRule annotation1 PublicationAdd BLAST369

Keywords - Cellular componenti

Cell inner membrane, Cell membrane, Membrane

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

<p>This subsection of the 'Pathology and Biotech' section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

Deletion leads to changes in cell morphology and to the formation of bulges that contain cytoplasmic material and cause cell lysis. Mutants exhibit increased sensitivity to rifampicin and novobiocin, and to a mixture of SDS and EDTA. Growth is severely affected by osmolarity and temperature (PubMed:24187084). Mutant accumulates precursor forms of LPS and exhibits elevated levels of LpxC (PubMed:24722986).2 Publications

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology%5Fand%5Fbiotech%5Fsection">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi184C → S: Does not affect metal binding; when associated with S-258. 1 Publication1
Mutagenesisi258C → S: Does not affect metal binding; when associated with S-184. 1 Publication1
Mutagenesisi357C → S: Lack of activity; when associated with S-360; S-371 and S-374. 1 Publication1
Mutagenesisi360C → S: Lack of activity; when associated with S-357; S-371 and S-374. 1 Publication1
Mutagenesisi371C → R: Lack of activity. 1 Publication1
Mutagenesisi371C → S: Lack of activity; when associated with S-357; S-360 and S-374. 1 Publication1
Mutagenesisi372P → L: Lack of activity. 1 Publication1
Mutagenesisi374C → S: Lack of activity; when associated with S-357; S-360 and S-371. 1 Publication1
Mutagenesisi378S → P: Lack of activity. 1 Publication1

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000138301 – 389Lipopolysaccharide assembly protein BAdd BLAST389

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P0AB58

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P0AB58

PRoteomics IDEntifications database

More...PRIDEi		P0AB58

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Induced by heat shock, via RpoH.2 Publications

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		4259400, 56 interactors

Database of interacting proteins

More...DIPi		DIP-48161N

Protein interaction database and analysis system

More...IntActi		P0AB58, 1 interactor

STRING: functional protein association networks

More...STRINGi		511145.b1280

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P0AB58

Database of comparative protein structure models

More...ModBasei		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section indicates the positions and types of repeated sequence motifs or repeated domains within the protein.<p><a href='/help/repeat' target='_top'>More...</a></p>Repeati35 – 68TPR 1UniRule annotationAdd BLAST34
Repeati69 – 102TPR 2UniRule annotationAdd BLAST34
Repeati107 – 140TPR 3UniRule annotationAdd BLAST34
Repeati142 – 174TPR 4UniRule annotationAdd BLAST33
Repeati180 – 213TPR 5UniRule annotationAdd BLAST34
Repeati214 – 247TPR 6UniRule annotationAdd BLAST34
Repeati249 – 282TPR 7UniRule annotationAdd BLAST34

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The membrane anchor N-terminal domain is required for activity. The iron-binding domain is required for protein stability and function.1 Publication

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the LapB family.UniRule annotationCurated

Keywords - Domaini

Repeat, TPR repeat, Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG2956, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_059365_1_0_6

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P0AB58

Database for complete collections of gene phylogenies

More...PhylomeDBi		P0AB58

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.25.40.10, 2 hits

HAMAP database of protein families

More...HAMAPi		MF_00994, LPS_assembly_LapB, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR030865, LapB
IPR041166, Rubredoxin_2
IPR013026, TPR-contain_dom
IPR011990, TPR-like_helical_dom_sf
IPR019734, TPR_repeat

Pfam protein domain database

More...Pfami		View protein in Pfam
PF18073, Rubredoxin_2, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM00028, TPR, 5 hits

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF48452, SSF48452, 2 hits

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS50005, TPR, 6 hits
PS50293, TPR_REGION, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P0AB58-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MLELLFLLLP VAAAYGWYMG RRSAQQNKQD EANRLSRDYV AGVNFLLSNQ 
        60         70         80         90        100
QDKAVDLFLD MLKEDTGTVE AHLTLGNLFR SRGEVDRAIR IHQTLMESAS 
       110        120        130        140        150
LTYEQRLLAI QQLGRDYMAA GLYDRAEDMF NQLTDETDFR IGALQQLLQI 
       160        170        180        190        200
YQATSEWQKA IDVAERLVKL GKDKQRVEIA HFYCELALQH MASDDLDRAM 
       210        220        230        240        250
TLLKKGAAAD KNSARVSIMM GRVFMAKGEY AKAVESLQRV ISQDRELVSE 
       260        270        280        290        300
TLEMLQTCYQ QLGKTAEWAE FLQRAVEENT GADAELMLAD IIEARDGSEA 
       310        320        330        340        350
AQVYITRQLQ RHPTMRVFHK LMDYHLNEAE EGRAKESLMV LRDMVGEKVR 
       360        370        380 
SKPRYRCQKC GFTAYTLYWH CPSCRAWSTI KPIRGLDGL
Length:389
Mass (Da):44,531
Last modified:October 11, 2005 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iF4D1B9E2A526BCC3
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
U00096 Genomic DNA Translation: AAC74362.1
AP009048 Genomic DNA Translation: BAA14834.1
M23250 Genomic DNA No translation available.

Protein sequence database of the Protein Information Resource

More...PIRi		C64876

NCBI Reference Sequences

More...RefSeqi		NP_415796.1, NC_000913.3
WP_000891353.1, NZ_STEB01000005.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAC74362; AAC74362; b1280
BAA14834; BAA14834; BAA14834

Database of genes from NCBI RefSeq genomes

More...GeneIDi		58460487
944858

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ecj:JW1272
eco:b1280

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|1411691.4.peg.1001

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U00096 Genomic DNA Translation: AAC74362.1
AP009048 Genomic DNA Translation: BAA14834.1
M23250 Genomic DNA No translation available.
PIRiC64876
RefSeqiNP_415796.1, NC_000913.3
WP_000891353.1, NZ_STEB01000005.1

3D structure databases

SMRiP0AB58
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi4259400, 56 interactors
DIPiDIP-48161N
IntActiP0AB58, 1 interactor
STRINGi511145.b1280

Proteomic databases

jPOSTiP0AB58
PaxDbiP0AB58
PRIDEiP0AB58

Genome annotation databases

EnsemblBacteriaiAAC74362; AAC74362; b1280
BAA14834; BAA14834; BAA14834
GeneIDi58460487
944858
KEGGiecj:JW1272
eco:b1280
PATRICifig|1411691.4.peg.1001

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...EchoBASEi		EB2554

Phylogenomic databases

eggNOGiCOG2956, Bacteria
HOGENOMiCLU_059365_1_0_6
InParanoidiP0AB58
PhylomeDBiP0AB58

Enzyme and pathway databases

BioCyciEcoCyc:EG12691-MONOMER

Miscellaneous databases

Protein Ontology

More...PROi		PR:P0AB58

Family and domain databases

Gene3Di1.25.40.10, 2 hits
HAMAPiMF_00994, LPS_assembly_LapB, 1 hit
InterProiView protein in InterPro
IPR030865, LapB
IPR041166, Rubredoxin_2
IPR013026, TPR-contain_dom
IPR011990, TPR-like_helical_dom_sf
IPR019734, TPR_repeat
PfamiView protein in Pfam
PF18073, Rubredoxin_2, 1 hit
SMARTiView protein in SMART
SM00028, TPR, 5 hits
SUPFAMiSSF48452, SSF48452, 2 hits
PROSITEiView protein in PROSITE
PS50005, TPR, 6 hits
PS50293, TPR_REGION, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...ProtoNeti		Search...

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiLAPB_ECOLI
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P0AB58
Secondary accession number(s): P45576, P76836
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: October 11, 2005
Last sequence update: October 11, 2005
Last modified: February 10, 2021
This is version 109 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
UniProt is an ELIXIR core data resource
Main funding by: National Institutes of Health

We'd like to inform you that we have updated our Privacy Notice to comply with Europe’s new General Data Protection Regulation (GDPR) that applies since 25 May 2018.

Do not show this banner again