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Entry version 137 (02 Jun 2021)
Sequence version 1 (01 Aug 1992)
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Protein

Stage IV sporulation protein FB

Gene

spoIVFB

Organism
Bacillus subtilis (strain 168)
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

Implicated in the coupling of mother cell to forespore gene expression. Required for spore formation. Processes the pro-sigma K factor.

Miscellaneous

Could be held inactive when BofA provides a fourth zinc ligand, preventing access to a water molecule and the sequence of pro sigma-K.

<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+CuratedNote: Binds 1 zinc ion per subunit.Curated

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 bindingi43Zinc; catalyticCurated1
<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 sitei44Curated1
Metal bindingi47Zinc; catalyticCurated1
Metal bindingi137Zinc; catalyticCurated1

<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, Protease
Biological processSporulation
LigandMetal-binding, Zinc

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
BSUB:BSU27970-MONOMER

BRENDA Comprehensive Enzyme Information System

More...
BRENDAi
3.4.21.116, 658
3.4.24.B23, 658

Protein family/group databases

MEROPS protease database

More...
MEROPSi
M50.002

Transport Classification Database

More...
TCDBi
9.B.149.1.13, the m50 peptidase (m50-p) family

<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:
Stage IV sporulation protein FB (EC:3.4.24.-)
<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:spoIVFB
Synonyms:bofB
Ordered Locus Names:BSU27970
<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>OrganismiBacillus subtilis (strain 168)
<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 identifieri224308 [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 lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus
<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
  • UP000001570 <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

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 – 10Mother cell cytoplasmicCurated10
<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>Transmembranei11 – 30HelicalSequence analysisAdd BLAST20
Topological domaini31Forespore intermembrane spaceCurated1
Transmembranei32 – 56HelicalSequence analysisAdd BLAST25
Topological domaini57 – 83Mother cell cytoplasmicCuratedAdd BLAST27
Transmembranei84 – 105HelicalSequence analysisAdd BLAST22
Topological domaini106 – 126Forespore intermembrane spaceCuratedAdd BLAST21
Transmembranei127 – 146HelicalSequence analysisAdd BLAST20
Topological domaini147 – 161Mother cell cytoplasmicCuratedAdd BLAST15
Transmembranei162 – 178HelicalSequence analysisAdd BLAST17
Topological domaini179Forespore intermembrane spaceCurated1
Transmembranei180 – 199HelicalSequence analysisAdd BLAST20
Topological domaini200 – 288Mother cell cytoplasmicCuratedAdd BLAST89

Keywords - Cellular componenti

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>Mutagenesisi43H → F: Loss of activity. 1 Publication1
Mutagenesisi44E → A or Q: Loss of activity. 1 Publication1
Mutagenesisi44E → D: Partial activity. 1 Publication1
Mutagenesisi47H → F: Loss 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_00000884781 – 288Stage IV sporulation protein FBAdd BLAST288

Proteomic databases

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

More...
PaxDbi
P26937

PRoteomics IDEntifications database

More...
PRIDEi
P26937

<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

Transcribed during the stage II, but not required until stage IV of sporulation.

<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

Forms a complex with SpoIVFA and BofA localized in the mother-cell membrane surrounding the forespore.

1 Publication

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Protein-protein interaction databases

Database of interacting proteins

More...
DIPi
DIP-48963N

Protein interaction database and analysis system

More...
IntActi
P26937, 1 interactor

STRING: functional protein association networks

More...
STRINGi
224308.BSU27970

<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

<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 M50B family.Curated

Keywords - Domaini

Transmembrane, Transmembrane helix

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG1994, Bacteria

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P26937

Identification of Orthologs from Complete Genome Data

More...
OMAi
EHGNRPF

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P26937

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR008915, Peptidase_M50

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF02163, Peptidase_M50, 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.

P26937-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MNKWLDLILK IHVHPFLWII AALGLLTGHM KALLCLLLIV LIHELGHAAL
60 70 80 90 100
AVFFSWRIKR VFLLPFGGTV EVEEHGNRPL KEEFAVIIAG PLQHIWLQFA
110 120 130 140 150
AWMLAEVSVI HQHTFELFTF YNLSILFVNL LPIWPLDGGK LLFLLFSKQL
160 170 180 190 200
PFQKAHRLNL KTSLCFCLLL GCWVLFVIPL QISAWVLFVF LAVSLFEEYR
210 220 230 240 250
QRHYIHVRFL LERYYGKNRE LEKLLPLTVK AEDKVYHVMA EFKRGCKHPI
260 270 280
IIEKSGQKLS QLDENEVLHA YFADKRTNSS MEELLLPY
Length:288
Mass (Da):33,640
Last modified:August 1, 1992 - 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:i81DB758DC215C916
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
X59528 Genomic DNA Translation: CAA42107.1
AL009126 Genomic DNA Translation: CAB14757.1

Protein sequence database of the Protein Information Resource

More...
PIRi
S18438

NCBI Reference Sequences

More...
RefSeqi
NP_390675.1, NC_000964.3
WP_004398649.1, NZ_JNCM01000036.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
CAB14757; CAB14757; BSU_27970

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
937505

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
bsu:BSU27970

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|224308.179.peg.3039

<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
X59528 Genomic DNA Translation: CAA42107.1
AL009126 Genomic DNA Translation: CAB14757.1
PIRiS18438
RefSeqiNP_390675.1, NC_000964.3
WP_004398649.1, NZ_JNCM01000036.1

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-protein interaction databases

DIPiDIP-48963N
IntActiP26937, 1 interactor
STRINGi224308.BSU27970

Protein family/group databases

MEROPSiM50.002
TCDBi9.B.149.1.13, the m50 peptidase (m50-p) family

Proteomic databases

PaxDbiP26937
PRIDEiP26937

Genome annotation databases

EnsemblBacteriaiCAB14757; CAB14757; BSU_27970
GeneIDi937505
KEGGibsu:BSU27970
PATRICifig|224308.179.peg.3039

Phylogenomic databases

eggNOGiCOG1994, Bacteria
InParanoidiP26937
OMAiEHGNRPF
PhylomeDBiP26937

Enzyme and pathway databases

BioCyciBSUB:BSU27970-MONOMER
BRENDAi3.4.21.116, 658
3.4.24.B23, 658

Family and domain databases

InterProiView protein in InterPro
IPR008915, Peptidase_M50
PfamiView protein in Pfam
PF02163, Peptidase_M50, 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 nameiSP4FB_BACSU
<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: P26937
<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, 1992
Last sequence update: August 1, 1992
Last modified: June 2, 2021
This is version 137 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. Peptidase families
    Classification of peptidase families and list of entries
  2. SIMILARITY comments
    Index of protein domains and families
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