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Entry version 105 (08 May 2019)
Sequence version 1 (01 Aug 1990)
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Protein

Raffinose permease

Gene

rafB

Organism
Escherichia coli
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

Responsible for transport of raffinose into the cell (PubMed:2556373, PubMed:18008022). Can also transport lactose and melibiose (PubMed:2556373). Has weak activity with maltose (PubMed:18008022).2 Publications

<p>This subsection of the ‘Function’ section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

  1. KM=1 mM for raffinose1 Publication
  2. KM=0.6 mM for lactose1 Publication
  3. KM=0.06 mM for melibiose1 Publication
  1. Vmax=360 nmol/min/mg enzyme with raffinose as substrate1 Publication
  2. Vmax=100 nmol/min/mg enzyme with lactose as substrate1 Publication
  3. Vmax=37 nmol/min/mg enzyme with melibiose as substrate1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei129Substrate bindingBy similarity1
Sitei147Substrate bindingBy similarity1
Sitei272Substrate binding and proton translocationBy similarity1
Sitei305Proton translocationBy similarity1
Sitei325Proton translocationBy similarity1
Sitei328Proton translocationBy similarity1

<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

Biological processSugar transport, Symport, Transport

Protein family/group databases

Transport Classification Database

More...
TCDBi
2.A.1.5.2 the major facilitator superfamily (mfs)

<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:
Raffinose permease1 Publication
Short name:
Raf permease1 Publication
<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:rafB1 Publication
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates if the gene coding for the protein originates from the hydrogenosome, the mitochondrion, the nucleomorph, different plastids or a plasmid. The absence of this section means that the gene is located in one of the main chromosomal element(s).<p><a href='/help/encoded_on' target='_top'>More...</a></p>Encoded oniPlasmid pRSD20 Publication
<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>OrganismiEscherichia coli
<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 identifieri562 [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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia

<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_location_section">'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 domaini1 – 11Cytoplasmic1 PublicationAdd BLAST11
<p>This subsection of the <a href="http://www.uniprot.org/help/subcellular_location_section">'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>Transmembranei12 – 32HelicalSequence analysisAdd BLAST21
Topological domaini33 – 48Periplasmic1 PublicationAdd BLAST16
Transmembranei49 – 69HelicalSequence analysisAdd BLAST21
Topological domaini70 – 78Cytoplasmic1 Publication9
Transmembranei79 – 99HelicalSequence analysisAdd BLAST21
Topological domaini100 – 105Periplasmic1 Publication6
Transmembranei106 – 126HelicalSequence analysisAdd BLAST21
Topological domaini127 – 147Cytoplasmic1 PublicationAdd BLAST21
Transmembranei148 – 168HelicalSequence analysisAdd BLAST21
Topological domaini169Periplasmic1 Publication1
Transmembranei170 – 190HelicalSequence analysisAdd BLAST21
Topological domaini191 – 229Cytoplasmic1 PublicationAdd BLAST39
Transmembranei230 – 250HelicalSequence analysisAdd BLAST21
Topological domaini251 – 265Periplasmic1 PublicationAdd BLAST15
Transmembranei266 – 286HelicalSequence analysisAdd BLAST21
Topological domaini287 – 294Cytoplasmic1 Publication8
Transmembranei295 – 315HelicalSequence analysisAdd BLAST21
Topological domaini316Periplasmic1 Publication1
Transmembranei317 – 337HelicalSequence analysisAdd BLAST21
Topological domaini338 – 351Cytoplasmic1 PublicationAdd BLAST14
Transmembranei352 – 372HelicalSequence analysisAdd BLAST21
Topological domaini373 – 383Periplasmic1 PublicationAdd BLAST11
Transmembranei384 – 404HelicalSequence analysisAdd BLAST21
Topological domaini405 – 425Cytoplasmic1 PublicationAdd BLAST21

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>Mutagenesisi35V → A: Significantly reduces raffinose transport, enhances maltose transport. 1 Publication1
Mutagenesisi138S → D: Significantly reduces raffinose transport, enhances maltose transport; when associated with L-139 and A-389. 1 Publication1
Mutagenesisi139S → L: Significantly reduces raffinose transport, enhances maltose transport; when associated with D-138 and A-389. 1 Publication1
Mutagenesisi389G → A: Significantly reduces raffinose transport, enhances maltose transport; when associated with D-138 and L-139. 1 Publication1
Mutagenesisi391I → S: Significantly reduces raffinose transport, enhances maltose transport. 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_00001961871 – 425Raffinose permeaseAdd BLAST425

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
P16552

<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

Monomer.

By similarity

<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

<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

Keywords - Domaini

Transmembrane, Transmembrane helix

Family and domain databases

Conserved Domains Database

More...
CDDi
cd06174 MFS, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000576 LacY/RafB_perm_fam
IPR018457 LacY/RafB_perm_fam_CS
IPR020846 MFS_dom
IPR036259 MFS_trans_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01306 LacY_symp, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR00174 LACYSMPORT

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF103473 SSF103473, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00882 2A0105, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00896 LACY_1, 1 hit
PS00897 LACY_2, 1 hit
PS50850 MFS, 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.

P16552-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNSASTHKNT DFWIFGLFFF LYFFIMATCF PFLPVWLSDV VGLSKTDTGI
60 70 80 90 100
VFSCLSLFAI SFQPLLGVIS DRLGLKKNLI WSISLLLVFF APFFLYVFAP
110 120 130 140 150
LLHLNIWAGA LTGGVFIGFV FSAGAGAIEA YIERVSRSSG FEYGKARMFG
160 170 180 190 200
CLGWALCATM AGILFNVDPS LVFWMGSGGA LLLLLLLYLA RPSTSQTAMV
210 220 230 240 250
MNALGANSSL ISTRMVFSLF RMRQMWMFVL YTIGVACVYD VFDQQFAIFF
260 270 280 290 300
RSFFDTPQAG IKAFGFATTA GEICNAIIMF CTPWIINRIG AKNTLLVAGG
310 320 330 340 350
IMTIRITGSA FATTMTEVVI LKMLHALEVP FLLVGAFKYI TGVFDTRLSA
360 370 380 390 400
TVYLIGFQFS KQLAAILLST FAGHLYDRMG FQNTYFVLGM IVLTVTVISA
410 420
FTLSSSPGIV HPSVEKAPVA HSEIN
Length:425
Mass (Da):46,693
Last modified:August 1, 1990 - 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:iCAEA12A78B8B1A1C
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
M27273 Genomic DNA Translation: AAA24498.1

Protein sequence database of the Protein Information Resource

More...
PIRi
B43717

<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
M27273 Genomic DNA Translation: AAA24498.1
PIRiB43717

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

SWISS-MODEL Interactive Workspace

More...
SWISS-MODEL-Workspacei
Submit a new modelling project...

Protein family/group databases

TCDBi2.A.1.5.2 the major facilitator superfamily (mfs)

Proteomic databases

PRIDEiP16552

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Family and domain databases

CDDicd06174 MFS, 1 hit
InterProiView protein in InterPro
IPR000576 LacY/RafB_perm_fam
IPR018457 LacY/RafB_perm_fam_CS
IPR020846 MFS_dom
IPR036259 MFS_trans_sf
PfamiView protein in Pfam
PF01306 LacY_symp, 1 hit
PRINTSiPR00174 LACYSMPORT
SUPFAMiSSF103473 SSF103473, 1 hit
TIGRFAMsiTIGR00882 2A0105, 1 hit
PROSITEiView protein in PROSITE
PS00896 LACY_1, 1 hit
PS00897 LACY_2, 1 hit
PS50850 MFS, 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 nameiRAFB_ECOLX
<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: P16552
<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: August 1, 1990
Last sequence update: August 1, 1990
Last modified: May 8, 2019
This is version 105 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

Plasmid

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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