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Entry version 147 (11 Dec 2019)
Sequence version 3 (23 Jan 2002)
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Protein

Maltose/maltodextrin import ATP-binding protein MalK

Gene

malK

Organism
Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
Status
Reviewed-Annotation score:

Annotation score:4 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

Part of the ABC transporter complex MalEFGK involved in maltose/maltodextrin import. Responsible for energy coupling to the transport system.UniRule annotation1 Publication

Miscellaneous

Target for inducer exclusion, mediated by the unphosphorylated enzyme III of the phosphotransferase system for glucose and resulting in the inhibition of maltose transport.
Acts as a repressor of mal genes. In absence of maltose, the C-terminus of MalK interacts with MalT, then MalT becomes inactive and the mal genes are not activated. In presence of maltose, MalK is tightly associated with the MalFG complex and has no affinity for MalT.

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 bindingi36 – 43ATPUniRule 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

<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 functionTranslocase
Biological processSugar transport, Transport
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
SENT99287:STM4230-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_and_taxonomy_section">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:
Maltose/maltodextrin import ATP-binding protein MalKUniRule annotation (EC:7.5.2.1UniRule annotation)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:malKUniRule annotation
Ordered Locus Names:STM4230
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiSalmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri99287 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeSalmonella
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000001014 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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

GO - Cellular componenti

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

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology_and_biotech_section">'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>Mutagenesisi86L → F: Loss of transport. No effect on ATP-binding activity but decrease in ATP hydrolysis. Retains repressor activity. 1 Publication1
Mutagenesisi160P → L: Loss of transport. No effect on ATP-binding activity but decrease in ATP hydrolysis. Retains repressor activity. 1 Publication1
Mutagenesisi165D → N: Loss of transport. No effect on ATP-binding activity but decrease in ATP hydrolysis. Retains repressor activity. 1 Publication1
Mutagenesisi306E → K: Loss of transport. No effect on ATP-binding and ATP hydrolysis. Retains repressor 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.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000924821 – 369Maltose/maltodextrin import ATP-binding protein MalKAdd BLAST369

Proteomic databases

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

More...
PaxDbi
P19566

PRoteomics IDEntifications database

More...
PRIDEi
P19566

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

The complex is composed of two ATP-binding proteins (MalK), two transmembrane proteins (MalG and MalK) and a solute-binding protein (MalE).

UniRule annotation

Protein-protein interaction databases

Protein interaction database and analysis system

More...
IntActi
P19566, 1 interactor

<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
P19566

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_and_domains_section">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 – 234ABC transporterUniRule annotationAdd BLAST231

<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

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4108IJ9 Bacteria
COG3839 LUCA

KEGG Orthology (KO)

More...
KOi
K10111

Identification of Orthologs from Complete Genome Data

More...
OMAi
WVLVGPS

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P19566

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR003593 AAA+_ATPase
IPR003439 ABC_transporter-like
IPR017871 ABC_transporter_CS
IPR015855 ABC_transpr_MalK
IPR008995 Mo/tungstate-bd_C_term_dom
IPR040582 OB_MalK
IPR027417 P-loop_NTPase

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00005 ABC_tran, 1 hit
PF17912 OB_MalK, 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
SSF50331 SSF50331, 1 hit
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
PS51245 MALK, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

P19566-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MASVQLRNVT KAWGDVVVSK DINLDIHDGE FVVFVGPSGC GKSTLLRMIA
60 70 80 90 100
GLETITSGDL FIGETRMNDI PPAERGVGMV FQSYALYPHL SVAENMSFGL
110 120 130 140 150
KLAGAKKEVM NQRVNQVAEV LQLAHLLERK PKALSGGQRQ RVAIGRTLVA
160 170 180 190 200
EPRVFLLDEP LSNLDAALRV QMRIEISRLH KRLGRTMIYV THDQVEAMTL
210 220 230 240 250
ADKIVVLDAG RVAQVGKPLE LYHYPADRFV AGFIGSPKMN FLPVKVTATA
260 270 280 290 300
IEQVQVELPN RQQIWLPVES RGVQVGANMS LGIRPEHLLP SDIADVTLEG
310 320 330 340 350
EVQVVEQLGH ETQIHIQIPA IRQNLVYRQN DVVLVEEGAT FAIGLPPERC
360
HLFREDGSAC RRLHQEPGV
Length:369
Mass (Da):40,799
Last modified:January 23, 2002 - v3
<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:i98CA374498C88FCF
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Sequence’ section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti141R → A in CAA38188 (PubMed:2674653).Curated1
Sequence conflicti141R → A no nucleotide entry (PubMed:1730061).Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X54292 Genomic DNA Translation: CAA38188.1
AE006468 Genomic DNA Translation: AAL23054.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S05329

NCBI Reference Sequences

More...
RefSeqi
NP_463095.1, NC_003197.2
WP_000179176.1, NC_003197.2

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAL23054; AAL23054; STM4230

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
1255756

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
stm:STM4230

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|99287.12.peg.4450

<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
X54292 Genomic DNA Translation: CAA38188.1
AE006468 Genomic DNA Translation: AAL23054.1
PIRiS05329
RefSeqiNP_463095.1, NC_003197.2
WP_000179176.1, NC_003197.2

3D structure databases

SMRiP19566
ModBaseiSearch...

Protein-protein interaction databases

IntActiP19566, 1 interactor

Proteomic databases

PaxDbiP19566
PRIDEiP19566

Genome annotation databases

EnsemblBacteriaiAAL23054; AAL23054; STM4230
GeneIDi1255756
KEGGistm:STM4230
PATRICifig|99287.12.peg.4450

Phylogenomic databases

eggNOGiENOG4108IJ9 Bacteria
COG3839 LUCA
KOiK10111
OMAiWVLVGPS
PhylomeDBiP19566

Enzyme and pathway databases

BioCyciSENT99287:STM4230-MONOMER

Family and domain databases

InterProiView protein in InterPro
IPR003593 AAA+_ATPase
IPR003439 ABC_transporter-like
IPR017871 ABC_transporter_CS
IPR015855 ABC_transpr_MalK
IPR008995 Mo/tungstate-bd_C_term_dom
IPR040582 OB_MalK
IPR027417 P-loop_NTPase
PfamiView protein in Pfam
PF00005 ABC_tran, 1 hit
PF17912 OB_MalK, 1 hit
SMARTiView protein in SMART
SM00382 AAA, 1 hit
SUPFAMiSSF50331 SSF50331, 1 hit
SSF52540 SSF52540, 1 hit
PROSITEiView protein in PROSITE
PS00211 ABC_TRANSPORTER_1, 1 hit
PS50893 ABC_TRANSPORTER_2, 1 hit
PS51245 MALK, 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 nameiMALK_SALTY
<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: P19566
Secondary accession number(s): O06952
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 1991
Last sequence update: January 23, 2002
Last modified: December 11, 2019
This is version 147 of the entry and version 3 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
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