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Protein

Phosphatidylinositol transfer protein beta isoform

Gene

PITPNB

Organism
Homo sapiens (Human)
Status
Reviewed-Annotation score: Annotation score: 4 out of 5-Experimental evidence at protein leveli

Functioni

Catalyzes the transfer of PtdIns and phosphatidylcholine between membranes.

GO - Molecular functioni

GO - Biological processi

  • lipid metabolic process Source: ProtInc
  • nucleus organization Source: BHF-UCL
  • phospholipid transport Source: Reactome
  • retrograde vesicle-mediated transport, Golgi to ER Source: BHF-UCL
Complete GO annotation...

Keywords - Biological processi

Transport

Keywords - Ligandi

Lipid-binding

Enzyme and pathway databases

BioCyciZFISH:ENSG00000180957-MONOMER.
ReactomeiR-HSA-1483196. PI and PC transport between ER and Golgi membranes.

Chemistry databases

SwissLipidsiSLP:000000416.

Names & Taxonomyi

Protein namesi
Recommended name:
Phosphatidylinositol transfer protein beta isoform
Short name:
PI-TP-beta
Short name:
PtdIns transfer protein beta
Short name:
PtdInsTP beta
Gene namesi
Name:PITPNB
OrganismiHomo sapiens (Human)
Taxonomic identifieri9606 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo
Proteomesi
  • UP000005640 Componenti: Chromosome 22

Organism-specific databases

HGNCiHGNC:9002. PITPNB.

Subcellular locationi

GO - Cellular componenti

  • endoplasmic reticulum membrane Source: Reactome
  • extracellular exosome Source: UniProtKB
  • Golgi membrane Source: Reactome
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm, Golgi apparatus

Pathology & Biotechi

Organism-specific databases

OpenTargetsiENSG00000180957.
PharmGKBiPA33336.

Polymorphism and mutation databases

DMDMi1346772.

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Initiator methionineiRemovedBy similarity
ChainiPRO_00001916432 – 271Phosphatidylinositol transfer protein beta isoformAdd BLAST270

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei215N6-acetyllysineCombined sources1
Modified residuei262PhosphoserineBy similarity1

Post-translational modificationi

Constitutive phosphorylation of Ser-262 has no effect on phospholipid transfer activity but is required for Golgi targeting.By similarity

Keywords - PTMi

Acetylation, Phosphoprotein

Proteomic databases

EPDiP48739.
MaxQBiP48739.
PaxDbiP48739.
PeptideAtlasiP48739.
PRIDEiP48739.

PTM databases

iPTMnetiP48739.
PhosphoSitePlusiP48739.

Expressioni

Tissue specificityi

Widely expressed in various tissues including brain.

Gene expression databases

BgeeiENSG00000180957.
CleanExiHS_PITPNB.
ExpressionAtlasiP48739. baseline and differential.
GenevisibleiP48739. HS.

Organism-specific databases

HPAiHPA000528.

Interactioni

Protein-protein interaction databases

BioGridi117261. 24 interactors.
IntActiP48739. 2 interactors.
MINTiMINT-5002601.
STRINGi9606.ENSP00000334738.

Structurei

3D structure databases

ProteinModelPortaliP48739.
SMRiP48739.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Phylogenomic databases

eggNOGiKOG3668. Eukaryota.
COG5083. LUCA.
GeneTreeiENSGT00760000119216.
HOGENOMiHOG000006717.
HOVERGENiHBG058915.
InParanoidiP48739.
OMAiRAIEDQT.
OrthoDBiEOG091G0CQQ.
PhylomeDBiP48739.
TreeFamiTF313279.

Family and domain databases

Gene3Di3.30.530.20. 1 hit.
InterProiIPR001666. PI_transfer.
IPR023393. START-like_dom.
[Graphical view]
PANTHERiPTHR10658. PTHR10658. 1 hit.
PfamiPF02121. IP_trans. 1 hit.
[Graphical view]
PRINTSiPR00391. PITRANSFER.

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: P48739-1) [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
MVLIKEFRVV LPCSVQEYQV GQLYSVAEAS KNETGGGEGI EVLKNEPYEK
60 70 80 90 100
DGEKGQYTHK IYHLKSKVPA FVRMIAPEGS LVFHEKAWNA YPYCRTIVTN
110 120 130 140 150
EYMKDDFFIK IETWHKPDLG TLENVHGLDP NTWKTVEIVH IDIADRSQVE
160 170 180 190 200
PADYKADEDP ALFQSVKTKR GPLGPNWKKE LANSPDCPQM CAYKLVTIKF
210 220 230 240 250
KWWGLQSKVE NFIQKQEKRI FTNFHRQLFC WIDKWIDLTM EDIRRMEDET
260 270
QKELETMRKR GSVRGTSAAD V
Length:271
Mass (Da):31,540
Last modified:January 23, 2007 - v2
Checksum:iAC5333FBC0F6CA06
GO
Isoform 2 (identifier: P48739-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     257-271: MRKRGSVRGTSAADV → LRNQGQVRGTSAASDE

Show »
Length:272
Mass (Da):31,638
Checksum:i05142EA9F80BA7CB
GO
Isoform 3 (identifier: P48739-3) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     1-7: MVLIKEF → MGDLLMEKC

Show »
Length:273
Mass (Da):31,700
Checksum:i547F67C88E573741
GO

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Alternative sequenceiVSP_0551321 – 7MVLIKEF → MGDLLMEKC in isoform 3. 1 Publication7
Alternative sequenceiVSP_012762257 – 271MRKRG…SAADV → LRNQGQVRGTSAASDE in isoform 2. 1 PublicationAdd BLAST15

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D30037 mRNA. Translation: BAA06277.1.
CR456541 mRNA. Translation: CAG30427.1.
AK302367 mRNA. Translation: BAH13686.1.
AL031591 Genomic DNA. Translation: CAB63033.1.
AL031591 Genomic DNA. Translation: CAQ68296.1.
CH471095 Genomic DNA. Translation: EAW59743.1.
BC018704 mRNA. Translation: AAH18704.1.
BC031427 mRNA. Translation: AAH31427.1.
CCDSiCCDS13842.1. [P48739-1]
CCDS63432.1. [P48739-3]
CCDS63433.1. [P48739-2]
RefSeqiNP_001271206.1. NM_001284277.1. [P48739-2]
NP_001271207.1. NM_001284278.1. [P48739-3]
NP_036531.1. NM_012399.4. [P48739-1]
UniGeneiHs.705323.

Genome annotation databases

EnsembliENST00000320996; ENSP00000321266; ENSG00000180957. [P48739-2]
ENST00000335272; ENSP00000334738; ENSG00000180957. [P48739-1]
ENST00000634017; ENSP00000487693; ENSG00000180957. [P48739-3]
GeneIDi23760.
KEGGihsa:23760.
UCSCiuc003adk.5. human. [P48739-1]

Keywords - Coding sequence diversityi

Alternative splicing

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D30037 mRNA. Translation: BAA06277.1.
CR456541 mRNA. Translation: CAG30427.1.
AK302367 mRNA. Translation: BAH13686.1.
AL031591 Genomic DNA. Translation: CAB63033.1.
AL031591 Genomic DNA. Translation: CAQ68296.1.
CH471095 Genomic DNA. Translation: EAW59743.1.
BC018704 mRNA. Translation: AAH18704.1.
BC031427 mRNA. Translation: AAH31427.1.
CCDSiCCDS13842.1. [P48739-1]
CCDS63432.1. [P48739-3]
CCDS63433.1. [P48739-2]
RefSeqiNP_001271206.1. NM_001284277.1. [P48739-2]
NP_001271207.1. NM_001284278.1. [P48739-3]
NP_036531.1. NM_012399.4. [P48739-1]
UniGeneiHs.705323.

3D structure databases

ProteinModelPortaliP48739.
SMRiP48739.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi117261. 24 interactors.
IntActiP48739. 2 interactors.
MINTiMINT-5002601.
STRINGi9606.ENSP00000334738.

Chemistry databases

SwissLipidsiSLP:000000416.

PTM databases

iPTMnetiP48739.
PhosphoSitePlusiP48739.

Polymorphism and mutation databases

DMDMi1346772.

Proteomic databases

EPDiP48739.
MaxQBiP48739.
PaxDbiP48739.
PeptideAtlasiP48739.
PRIDEiP48739.

Protocols and materials databases

DNASUi23760.
Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsembliENST00000320996; ENSP00000321266; ENSG00000180957. [P48739-2]
ENST00000335272; ENSP00000334738; ENSG00000180957. [P48739-1]
ENST00000634017; ENSP00000487693; ENSG00000180957. [P48739-3]
GeneIDi23760.
KEGGihsa:23760.
UCSCiuc003adk.5. human. [P48739-1]

Organism-specific databases

CTDi23760.
GeneCardsiPITPNB.
HGNCiHGNC:9002. PITPNB.
HPAiHPA000528.
MIMi606876. gene.
neXtProtiNX_P48739.
OpenTargetsiENSG00000180957.
PharmGKBiPA33336.
GenAtlasiSearch...

Phylogenomic databases

eggNOGiKOG3668. Eukaryota.
COG5083. LUCA.
GeneTreeiENSGT00760000119216.
HOGENOMiHOG000006717.
HOVERGENiHBG058915.
InParanoidiP48739.
OMAiRAIEDQT.
OrthoDBiEOG091G0CQQ.
PhylomeDBiP48739.
TreeFamiTF313279.

Enzyme and pathway databases

BioCyciZFISH:ENSG00000180957-MONOMER.
ReactomeiR-HSA-1483196. PI and PC transport between ER and Golgi membranes.

Miscellaneous databases

ChiTaRSiPITPNB. human.
GeneWikiiPITPNB.
GenomeRNAii23760.
PROiP48739.
SOURCEiSearch...

Gene expression databases

BgeeiENSG00000180957.
CleanExiHS_PITPNB.
ExpressionAtlasiP48739. baseline and differential.
GenevisibleiP48739. HS.

Family and domain databases

Gene3Di3.30.530.20. 1 hit.
InterProiIPR001666. PI_transfer.
IPR023393. START-like_dom.
[Graphical view]
PANTHERiPTHR10658. PTHR10658. 1 hit.
PfamiPF02121. IP_trans. 1 hit.
[Graphical view]
PRINTSiPR00391. PITRANSFER.
ProtoNetiSearch...

Entry informationi

Entry nameiPIPNB_HUMAN
AccessioniPrimary (citable) accession number: P48739
Secondary accession number(s): B3KYB8, B7Z7Q0, Q8N5W1
Entry historyi
Integrated into UniProtKB/Swiss-Prot: February 1, 1996
Last sequence update: January 23, 2007
Last modified: November 2, 2016
This is version 146 of the entry and version 2 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Human chromosome 22
    Human chromosome 22: entries, gene names and cross-references to MIM
  2. MIM cross-references
    Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot
  3. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.