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Protein

Bactericidal permeability-increasing protein

Gene

Bpi

Organism
Mus musculus (Mouse)
Status
Reviewed-Annotation score: Annotation score: 5 out of 5-Experimental evidence at protein leveli

Functioni

The cytotoxic action of BPI is limited to many species of Gram-negative bacteria; this specificity may be explained by a strong affinity of the very basic N-terminal half for the negatively charged lipopolysaccharides that are unique to the Gram-negative bacterial outer envelope.1 Publication

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionAntibiotic, Antimicrobial

Enzyme and pathway databases

ReactomeiR-MMU-166016. Toll Like Receptor 4 (TLR4) Cascade.
R-MMU-6798695. Neutrophil degranulation.
R-MMU-6803157. Antimicrobial peptides.

Names & Taxonomyi

Protein namesi
Recommended name:
Bactericidal permeability-increasing protein
Short name:
BPI
Gene namesi
Name:Bpi
OrganismiMus musculus (Mouse)
Taxonomic identifieri10090 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaMuridaeMurinaeMusMus
Proteomesi
  • UP000000589 Componenti: Chromosome 2

Organism-specific databases

MGIiMGI:3045315. Bpi.

Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte; Source: COMPARTMENTS

Keywords - Cellular componenti

Membrane, Secreted

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Signal peptidei1 – 27Sequence analysisAdd BLAST27
ChainiPRO_000035833228 – 483Bactericidal permeability-increasing proteinAdd BLAST456

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Disulfide bondi161 ↔ 201By similarity
Glycosylationi375N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi389N-linked (GlcNAc...) asparagineSequence analysis1

Keywords - PTMi

Disulfide bond, Glycoprotein

Proteomic databases

PaxDbiQ67E05.
PRIDEiQ67E05.

PTM databases

iPTMnetiQ67E05.
PhosphoSitePlusiQ67E05.

Expressioni

Tissue specificityi

Expressed in testis, epididymis, and bone marrow, as well as in Sertoli and promyelocytic cell lines. Upon stimulation with different TLR ligands, it is strongly expressed in granulocytes and in bone marrow-derived dendritic cells.2 Publications

Inductioni

By lipopolysaccharide (LPS) through TRL4-TRIF-dependent pathway. Expression in Sertoli and promyelocytic cells is enhanced several-fold by all-trans retinoic acid.2 Publications

Gene expression databases

BgeeiENSMUSG00000052922.

Interactioni

Subunit structurei

Monomer. Homodimer; disulfide-linked (By similarity).By similarity

Protein-protein interaction databases

STRINGi10090.ENSMUSP00000067837.

Structurei

3D structure databases

ProteinModelPortaliQ67E05.
SMRiQ67E05.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni6 – 188N-terminal barrelBy similarityAdd BLAST183
Regioni189 – 254Central sheetBy similarityAdd BLAST66
Regioni235 – 240Cleavage sites for elastaseBy similarity6
Regioni255 – 426C-terminal barrelBy similarityAdd BLAST172

Domaini

The N-terminal region may be exposed to the interior of the granule, whereas the C-terminal portion may be embedded in the membrane. During phagocytosis and degranulation, proteases may be released and activated and cleave BPI at the junction of the N- and C-terminal portions of the molecule, providing controlled release of the N-terminal antibacterial fragment when bacteria are ingested (By similarity).By similarity
The N- and C-terminal barrels adopt an identical fold despite having only 13% of conserved residues.By similarity

Sequence similaritiesi

Keywords - Domaini

Signal

Phylogenomic databases

eggNOGiKOG4160. Eukaryota.
ENOG410Z88E. LUCA.
GeneTreeiENSGT00730000110583.
HOGENOMiHOG000231250.
HOVERGENiHBG002797.
InParanoidiQ67E05.
OMAiDSHINVL.
OrthoDBiEOG091G08NV.
TreeFamiTF315617.

Family and domain databases

InterProiView protein in InterPro
IPR017943. Bactericidal_perm-incr_a/b_dom.
IPR030181. BPI.
IPR030675. BPI/LBP.
IPR032942. BPI/LBP/Plunc.
IPR001124. Lipid-bd_serum_glycop_C.
IPR017942. Lipid-bd_serum_glycop_N.
PANTHERiPTHR10504. PTHR10504. 1 hit.
PTHR10504:SF109. PTHR10504:SF109. 1 hit.
PfamiView protein in Pfam
PF01273. LBP_BPI_CETP. 1 hit.
PF02886. LBP_BPI_CETP_C. 1 hit.
PIRSFiPIRSF002417. Lipid_binding_protein. 1 hit.
SMARTiView protein in SMART
SM00328. BPI1. 1 hit.
SM00329. BPI2. 1 hit.
SUPFAMiSSF55394. SSF55394. 2 hits.

Sequences (3)i

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

This entry describes 3 isoformsi produced by alternative splicing. AlignAdd to basket

Isoform 1 (identifier: Q67E05-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide

        10         20         30         40         50
MTWAPDNVRK WSALLLLAII GTALTAATDP GFVAMISQKG LDFACQQGVV
60 70 80 90 100
ELQKELQAIS VPDFSGVFKI KHLGKGSYEF YSMAVDGFHI PNPKIEMLPS
110 120 130 140 150
DGLRVFIKDA SIKINGKWMS RKNFLKAGGN FELSIQGVSI STDLILGSDS
160 170 180 190 200
SGHITTICSN CDSHIDSVHI KISGSMLGWL IRLFHRKIET SLKNIIYKKI
210 220 230 240 250
CKIVRDSVSS KLQPYLKTLS VITRVDDVTS VDYSLLAPLT TTNQFLEGQL
260 270 280 290 300
KGEFFWRGHR DPLPIHPPVM RFVPNGAYMV CMGISDYFFN TEVLAYQQSG
310 320 330 340 350
TLKMTLGGQL LSNNGRFQLN TDFLRTFLPK VAKMFPSMGV QLLISAPVPV
360 370 380 390 400
HLSIQPSGLS FNPKLETQAF VVLPNASLVP LFVLGMKTNA SLEVDAEENR
410 420 430 440 450
LVGEMKLGSR WLLELKESKF GPFKVEYLED VINYLVSTLV LPKINERLRR
460 470 480
GFPLPLPAGI RFSHFTFYPY QNFLLLEADL HLI
Length:483
Mass (Da):53,940
Last modified:October 11, 2004 - v1
Checksum:i4AA2D48095C52B74
GO
Isoform 2 (identifier: Q67E05-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     409-409: Missing.

Show »
Length:482
Mass (Da):53,853
Checksum:i5AA75217D0F72260
GO
Isoform 3 (identifier: Q67E05-3) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     386-386: M → MVRR

Show »
Length:486
Mass (Da):54,352
Checksum:i9D8F627EA5496D62
GO

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Alternative sequenceiVSP_036069386M → MVRR in isoform 3. 1 Publication1
Alternative sequenceiVSP_036070409Missing in isoform 2. Curated1

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AY853179 mRNA. Translation: AAW50819.1.
AY648037 mRNA. Translation: AAV65841.1.
AY363993 mRNA. Translation: AAR13289.1.
AK033770 mRNA. Translation: BAC28468.1.
AL663063 Genomic DNA. Translation: CAM23524.1.
AL663063 Genomic DNA. Translation: CAM23525.1.
AL663063 Genomic DNA. Translation: CAM23526.1.
BC118049 mRNA. Translation: AAI18050.1.
BC118504 mRNA. Translation: AAI18505.1.
CCDSiCCDS16987.1. [Q67E05-3]
RefSeqiNP_808518.1. NM_177850.3. [Q67E05-3]
UniGeneiMm.260883.

Genome annotation databases

EnsembliENSMUST00000065039; ENSMUSP00000067837; ENSMUSG00000052922. [Q67E05-3]
ENSMUST00000109499; ENSMUSP00000105125; ENSMUSG00000052922. [Q67E05-1]
ENSMUST00000109500; ENSMUSP00000105126; ENSMUSG00000052922. [Q67E05-2]
GeneIDi329547.
KEGGimmu:329547.
UCSCiuc008npw.1. mouse. [Q67E05-3]
uc008npx.1. mouse. [Q67E05-1]

Keywords - Coding sequence diversityi

Alternative splicing

Similar proteinsi

Entry informationi

Entry nameiBPI_MOUSE
AccessioniPrimary (citable) accession number: Q67E05
Secondary accession number(s): A2AC63, Q5I5I4, Q8BSF3
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 16, 2008
Last sequence update: October 11, 2004
Last modified: September 27, 2017
This is version 102 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
  2. SIMILARITY comments
    Index of protein domains and families