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Entry version 76 (05 Jun 2019)
Sequence version 1 (05 Jul 2005)
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Protein

Mitochondrial-processing peptidase subunit beta

Gene

mppB

Organism
Dictyostelium discoideum (Slime mold)
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

The mitochondrial processing protease (MPP-I) cleaves presequences from mitochondrial protein precursors. Most MPP-I cleavage sites follow an arginine at position -2. mppB is the catalytic subunit of the heterodimeric metallo-endopeptidase. Mitochondrial processing peptidase plays an essential role in mitochondrial biogenesis.1 Publication

<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

  • Release of N-terminal transit peptides from precursor proteins imported into the mitochondrion, typically with Arg in position P2. EC:3.4.24.64

<p>This subsection of the ‘Function’ section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Zn2+By similarityNote: Binds 1 zinc ion per subunit.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 bindingi78ZincPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei81Proton acceptorPROSITE-ProRule annotation1
Metal bindingi82ZincPROSITE-ProRule annotation1

<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 functionHydrolase, Metalloprotease, Oxidoreductase, Protease
LigandMetal-binding, Zinc

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...
Reactomei
R-DDI-611105 Respiratory electron transport

Protein family/group databases

MEROPS protease database

More...
MEROPSi
M16.003

<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:
Mitochondrial-processing peptidase subunit beta (EC:3.4.24.64)
Alternative name(s):
Beta-MPP
<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:mppB
ORF Names:DDB_G0288777
<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>OrganismiDictyostelium discoideum (Slime mold)
<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 identifieri44689 [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 lineageiEukaryotaAmoebozoaMycetozoaDictyostelidsDictyostelialesDictyosteliaceaeDictyostelium
<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
  • UP000002195 <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> Componentsi: Chromosome 5, Unassembled WGS sequence

Organism-specific databases

Dictyostelium discoideum online informatics resource

More...
dictyBasei
DDB_G0288777 mppB

<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

Membrane, Mitochondrion, Mitochondrion inner 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

Disruption of the mppB is lethal.1 Publication

<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_00003906581 – 469Mitochondrial-processing peptidase subunit betaAdd BLAST469

Proteomic databases

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

More...
PaxDbi
Q4W6B5

PRoteomics IDEntifications database

More...
PRIDEi
Q4W6B5

<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 provides information on the expression of the gene product at various stages of a cell, tissue or organism development. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.<p><a href='/help/developmental_stage' target='_top'>More...</a></p>Developmental stagei

The expression level of the transcript is highest in vegetative cells and in early development (5 hours), and decreases at 5 to 10 hours of development. Inn contrast the protein level does not significantly change during the life cycle, despite the marked reduction in the level of mRNA after 5 to 10 hours of development, suggesting that the protein is stable throughout the life cycle.1 Publication

<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

Antisense RNA inhibition of the mppB gene induces gene expression of nuclear-encoded mitochondrial proteins (mppA and cxdA) and surprisingly also of the mppB gene itself. These results suggest that antisense RNA inhibition of mppB induces gene expression of mitochondrial proteins, presumably in a retrograde signaling manner. Up-regulated by Pseudomonas aeruginosa, PAO1 strain and PA14 strain infection.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

<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

Heterodimer of alpha and beta subunits. The beta chain has the catalytic site. mppB is probably also part of the cytochrome bc1 complex as a core I protein in the mitochondrial inner membrane.

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
44689.DDB0231799

<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

Belongs to the peptidase M16 family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
KOG0960 Eukaryota
COG0612 LUCA

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
Q4W6B5

KEGG Orthology (KO)

More...
KOi
K17732

Identification of Orthologs from Complete Genome Data

More...
OMAi
FQEIREQ

Database for complete collections of gene phylogenies

More...
PhylomeDBi
Q4W6B5

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR011249 Metalloenz_LuxS/M16
IPR011765 Pept_M16_N
IPR001431 Pept_M16_Zn_BS
IPR007863 Peptidase_M16_C

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00675 Peptidase_M16, 1 hit
PF05193 Peptidase_M16_C, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF63411 SSF63411, 2 hits

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00143 INSULINASE, 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.

Q4W6B5-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MSNITKLFVK STKNFSRSFS RKTVDPSYLK ISPETKITTL SNGIRVATEQ
60 70 80 90 100
TYGEVASVGV WVDSGSVYET DKNNGVAHFL EHMIFKGTAK RPTPQSIETE
110 120 130 140 150
IENMGGSLNA FTSREHSAYY MKVLKDNVPN AVDILSDILQ NSKFETSLIE
160 170 180 190 200
QERDTILSEN DYIQSKEDEV VFDQLHAAAF QGSALGRTIL GPVENIKSIT
210 220 230 240 250
REQIQEFINE NYTGDRLVIS AAGAVNHEQL VEQVKEKFAN VKMSQVSKDV
260 270 280 290 300
KRAAITNDFI GSELRVRDDE QPLIHFAVAV RALPWTDPDY FVLELIQTMI
310 320 330 340 350
GNWNRGIAAG KNIASNLGEI VATEDLAESY STFFTCYQDT GLFGNYGVCQ
360 370 380 390 400
PERVDDLVAE MLKEWQRIAT SCNKNEVERN KQKLLATTLM QYDGTSKVCE
410 420 430 440 450
GIGRQILTLG RRLSPFEVYT RINEITVADV QRVASTLLRD VSPAVTAIGP
460
IANYPDYNFV KGWTYWNRL
Length:469
Mass (Da):52,626
Last modified:July 5, 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:i404154C4C47DF92D
GO

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
AB213514 mRNA Translation: BAD98567.1
AAFI02000125 Genomic DNA Translation: EAS66835.1

NCBI Reference Sequences

More...
RefSeqi
XP_001134518.1, XM_001134518.1

Genome annotation databases

Ensembl protists genome annotation project

More...
EnsemblProtistsi
EAS66835; EAS66835; DDB_G0288777

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
8626796

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ddi:DDB_G0288777

<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
AB213514 mRNA Translation: BAD98567.1
AAFI02000125 Genomic DNA Translation: EAS66835.1
RefSeqiXP_001134518.1, XM_001134518.1

3D structure databases

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

SWISS-MODEL Interactive Workspace

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

Protein-protein interaction databases

STRINGi44689.DDB0231799

Protein family/group databases

MEROPSiM16.003

Proteomic databases

PaxDbiQ4W6B5
PRIDEiQ4W6B5

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblProtistsiEAS66835; EAS66835; DDB_G0288777
GeneIDi8626796
KEGGiddi:DDB_G0288777

Organism-specific databases

dictyBaseiDDB_G0288777 mppB

Phylogenomic databases

eggNOGiKOG0960 Eukaryota
COG0612 LUCA
InParanoidiQ4W6B5
KOiK17732
OMAiFQEIREQ
PhylomeDBiQ4W6B5

Enzyme and pathway databases

ReactomeiR-DDI-611105 Respiratory electron transport

Miscellaneous databases

Protein Ontology

More...
PROi
PR:Q4W6B5

Family and domain databases

InterProiView protein in InterPro
IPR011249 Metalloenz_LuxS/M16
IPR011765 Pept_M16_N
IPR001431 Pept_M16_Zn_BS
IPR007863 Peptidase_M16_C
PfamiView protein in Pfam
PF00675 Peptidase_M16, 1 hit
PF05193 Peptidase_M16_C, 1 hit
SUPFAMiSSF63411 SSF63411, 2 hits
PROSITEiView protein in PROSITE
PS00143 INSULINASE, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
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 nameiMPPB_DICDI
<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: Q4W6B5
Secondary accession number(s): Q1ZXD0
<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: January 19, 2010
Last sequence update: July 5, 2005
Last modified: June 5, 2019
This is version 76 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)

<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

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Peptidase families
    Classification of peptidase families and list of entries
  3. Dictyostelium discoideum
    Dictyostelium discoideum: entries, gene names and cross-references to dictyBase
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