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Entry version 85 (02 Jun 2021)
Sequence version 1 (24 Mar 2009)
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Protein

Macrolide export ATP-binding/permease protein MacB

Gene

macB

Organism
Escherichia coli O81 (strain ED1a)
Status
Unreviewed-Annotation score:

Annotation score:3 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>
-Protein inferred from homologyi <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

Part of the tripartite efflux system MacAB-TolC. MacB is a non-canonical ABC transporter that contains transmembrane domains (TMD), which form a pore in the inner membrane, and an ATP-binding domain (NBD), which is responsible for energy generation. Confers resistance against macrolides.

UniRule annotation

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi41 – 48ATPPROSITE-ProRule annotation8

<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

GO - Biological processi

<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

Molecular functionTranslocaseUniRule annotation
Biological processAntibiotic resistanceUniRule annotationARBA annotation, TransportUniRule annotation
LigandATP-bindingUniRule annotationARBA annotation, Nucleotide-binding

<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:
Macrolide export ATP-binding/permease protein MacBUniRule annotation (EC:7.6.2.-UniRule 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:macBUniRule annotationImported
Ordered Locus Names:ECED1_0846Imported
<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 O81 (strain ED1a)Imported
<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 identifieri585397 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<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
  • UP000000748 <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

<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>Transmembranei273 – 293HelicalUniRule annotationAdd BLAST21
Transmembranei523 – 548HelicalUniRule annotationAdd BLAST26
Transmembranei572 – 602HelicalUniRule annotationAdd BLAST31
Transmembranei608 – 631HelicalUniRule annotationAdd BLAST24

Keywords - Cellular componenti

Cell inner membraneUniRule annotation, Cell membrane, Membrane

<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

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Homodimer. Part of the tripartite efflux system MacAB-TolC, which is composed of an inner membrane transporter, MacB, a periplasmic membrane fusion protein, MacA, and an outer membrane component, TolC. The complex forms a large protein conduit and can translocate molecules across both the inner and outer membranes.

Interacts with MacA.

UniRule annotation

<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
B7MRT6

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 <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini4 – 273MACBInterPro annotationAdd BLAST270
Domaini5 – 243ABC transporterInterPro annotationAdd BLAST239

<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 ABC transporter superfamily. Macrolide exporter (TC 3.A.1.122) family. [View classification]UniRule annotation
Belongs to the ABC-4 integral membrane protein family. LolC/E subfamily.ARBA annotation

Keywords - Domaini

Transmembrane, Transmembrane helixUniRule annotationARBA annotation

Phylogenomic databases

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
CLU_000604_78_2_6

Identification of Orthologs from Complete Genome Data

More...
OMAi
VVILITH

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003593, AAA+_ATPase
IPR003838, ABC3_permease_dom
IPR003439, ABC_transporter-like
IPR017871, ABC_transporter_CS
IPR017911, ABC_transptr_macrolide_ATP-bd
IPR025857, MacB_PCD
IPR027417, P-loop_NTPase

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00005, ABC_tran, 1 hit
PF02687, FtsX, 1 hit
PF12704, MacB_PCD, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00382, AAA, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF52540, SSF52540, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00211, ABC_TRANSPORTER_1, 1 hit
PS50893, ABC_TRANSPORTER_2, 1 hit
PS51267, MACB, 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.

B7MRT6-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTPLLELKDI RRSYPAGDEQ VEVLKGISLD IYAGEMVAIV GASGSGKSTL
60 70 80 90 100
MNILGCLDKA TSGTYRVAGQ DVATLDADAL AQLRREHFGF IFQRYHLLSH
110 120 130 140 150
LTAEQNVEVP AVYAGLERKQ RLLRAQELLQ RLGLEDRTEY YPAQLSGGQQ
160 170 180 190 200
QRVSIARALM NGGQVILADE PTGALDSHSG EEVMAILHQL RDRGHTVIIV
210 220 230 240 250
THDPQVAAQA ERVIEIRDGE IVRNPPAVEK VNATGGTEPV VNTASGWRQF
260 270 280 290 300
VSGFNEALTM AWRALAANKM RTLLTMLGII IGIASVVSIV VVGDAAKQMV
310 320 330 340 350
LADIRSIGTN TIDVYPGKDF GDDDPQYQQA LKYDDLIAIQ KQPWVASATP
360 370 380 390 400
AVSQNLRLRY NNVDVAASAN GVSGDYFNVY GMTFSEGNTF NQEQLNGRAQ
410 420 430 440 450
VVVLDSNTRR QLFPHKADVV GEVILVGNMP ARVIGVAEEK QSMFGSSKVL
460 470 480 490 500
RVWLPYSTMS GRVMGQSWLN SITVRVKEGF DSAEAEQQLT RLLSLRHGKK
510 520 530 540 550
DFFTWNMDGV LKTVEKTTRT LQLFLTLVAV ISLVVGGIGV MNIMLVSVTE
560 570 580 590 600
RTREIGIRMA VGARASDVLQ QFLIEAVLVC LVGGALGITL SLLIAFTLQL
610 620 630 640
FLPGWEIGFS PLALLLAFLC STVTGILFGW LPARNAARLD PVDALARE
Length:648
Mass (Da):70,632
Last modified:March 24, 2009 - 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:iD0B55BABFF1652E8
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
CU928162 Genomic DNA Translation: CAR07050.1

NCBI Reference Sequences

More...
RefSeqi
WP_000188147.1, NC_011745.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
CAR07050; CAR07050; ECED1_0846

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecq:ECED1_0846

<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
CU928162 Genomic DNA Translation: CAR07050.1
RefSeqiWP_000188147.1, NC_011745.1

3D structure databases

SMRiB7MRT6
ModBaseiSearch...

Genome annotation databases

EnsemblBacteriaiCAR07050; CAR07050; ECED1_0846
KEGGiecq:ECED1_0846

Phylogenomic databases

HOGENOMiCLU_000604_78_2_6
OMAiVVILITH

Family and domain databases

InterProiView protein in InterPro
IPR003593, AAA+_ATPase
IPR003838, ABC3_permease_dom
IPR003439, ABC_transporter-like
IPR017871, ABC_transporter_CS
IPR017911, ABC_transptr_macrolide_ATP-bd
IPR025857, MacB_PCD
IPR027417, P-loop_NTPase
PfamiView protein in Pfam
PF00005, ABC_tran, 1 hit
PF02687, FtsX, 1 hit
PF12704, MacB_PCD, 1 hit
SMARTiView protein in SMART
SM00382, AAA, 1 hit
SUPFAMiSSF52540, SSF52540, 1 hit
PROSITEiView protein in PROSITE
PS00211, ABC_TRANSPORTER_1, 1 hit
PS50893, ABC_TRANSPORTER_2, 1 hit
PS51267, MACB, 1 hit

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 nameiB7MRT6_ECO81
<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: B7MRT6
<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/TrEMBL: March 24, 2009
Last sequence update: March 24, 2009
Last modified: June 2, 2021
This is version 85 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 statusiUnreviewed (UniProtKB/TrEMBL)
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