Prex1 phosphatidylinositol-3,4,5-trisphosphate-dependent Rac exchange factor 1 [Rattus norvegicus (Norway rat)] - Gene

Summary

Official Symbol: Prex1provided by RGD
Official Full Name: phosphatidylinositol-3,4,5-trisphosphate-dependent Rac exchange factor 1provided by RGD
Primary source: RGD:1306534
See related: EnsemblRapid:ENSRNOG00000006952 AllianceGenome:RGD:1306534
Gene type: protein coding
RefSeq status: PROVISIONAL
Organism: Rattus norvegicus
Lineage: Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae; Murinae; Rattus
Also known as: RGD1306534
Summary: Predicted to enable GTPase activator activity; guanyl-nucleotide exchange factor activity; and phospholipid binding activity. Involved in positive regulation of cell migration; regulation of actin filament polymerization; and regulation of dendrite development. Located in dendritic shaft; growth cone; and perinuclear region of cytoplasm. Orthologous to human PREX1 (phosphatidylinositol-3,4,5-trisphosphate dependent Rac exchange factor 1). [provided by Alliance of Genome Resources, Jan 2025]
Expression: Biased expression in Spleen (RPKM 256.9), Lung (RPKM 118.4) and 8 other tissues See more
Orthologs: human mouse all
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Genomic context

Location:: 3q42

Exon count:: 40

Annotation release	Status	Assembly	Chr	Location
RS_2024_02	current	GRCr8 (GCF_036323735.1)	3	NC_086021.1 (175724939..175875764, complement)
RS_2023_06	previous assembly	mRatBN7.2 (GCF_015227675.2)	3	NC_051338.1 (155306950..155456688, complement)
106	previous assembly	Rnor_6.0 (GCF_000001895.5)	3	NC_005102.4 (163329580..163477822, complement)

Chromosome 3 - NC_086021.1 Genomic Context describing neighboring genes

Genomic regions, transcripts, and products

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Go to reference sequence details

Genomic Sequence:

Go to nucleotide: Graphics FASTA GenBank

Expression

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See details

Project title: A rat RNA-Seq transcriptomic BodyMap across 11 organs and 4 developmental stages
Description: 320 RNA samples isolated from 11 organs (adrenal gland, brain, heart, kidney, liver, lung, muscle, spleen, thymus, and testes or uterus) from both sexes of Fischer 344 rats across four developmental stages (2-, 6-, 21-, and 104-weeks-old)
BioProject: PRJNA238328
Publication: PMID 24510058
Analysis date: Mon Jun 6 17:44:12 2016

Bibliography

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GeneRIFs: Gene References Into Functions

What's a GeneRIF?

P-Rex1 Mediates Glucose-Stimulated Rac1 Activation and Insulin Secretion in Pancreatic beta-Cells.
Title: P-Rex1 Mediates Glucose-Stimulated Rac1 Activation and Insulin Secretion in Pancreatic β-Cells.
This study has identified P-Rex1 as a Rac3-guanine nucleotide exchange factor in neuronal cells that localises to, and regulates, actin cytoskeletal dynamics at the axonal growth cone to in turn regulate neurite differentiation.
Title: P-Rex1 - a multidomain protein that regulates neurite differentiation.

Submit: New GeneRIF Correction

Interactions

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Products	Interactant	Other Gene	Complex	Source	Pubs	Description

General gene information

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Markers

BC067047 (e-PCR), detects polymorphism
- UniSTS:507420

AU049770 (e-PCR)
- UniSTS:146216

D3Got151 (e-PCR)
- UniSTS:114026

D3Cebr5 (e-PCR)
- UniSTS:518762

STS-Z39767 (e-PCR)
- UniSTS:12965

BB045044 (e-PCR)
- UniSTS:185517

Gene Ontology Provided by RGD

Function	Evidence Code	Pubs
enables GTPase activator activity	IBA Inferred from Biological aspect of Ancestor more info
enables guanyl-nucleotide exchange factor activity	IBA Inferred from Biological aspect of Ancestor more info
enables phospholipid binding	ISO Inferred from Sequence Orthology more info

Process	Evidence Code	Pubs
involved_in G protein-coupled receptor signaling pathway	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within G protein-coupled receptor signaling pathway	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within T cell differentiation	ISO Inferred from Sequence Orthology more info
involved_in intracellular signal transduction	IEA Inferred from Electronic Annotation more info
involved_in negative regulation of TOR signaling	IBA Inferred from Biological aspect of Ancestor more info
involved_in negative regulation of protein kinase activity	IBA Inferred from Biological aspect of Ancestor more info
acts_upstream_of_or_within neutrophil chemotaxis	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within positive regulation of GTPase activity	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within positive regulation of cell adhesion	ISO Inferred from Sequence Orthology more info
involved_in positive regulation of cell migration	IMP Inferred from Mutant Phenotype more info	PubMed
acts_upstream_of_or_within positive regulation of substrate adhesion-dependent cell spreading	ISO Inferred from Sequence Orthology more info
acts_upstream_of_or_within reactive oxygen species metabolic process	ISO Inferred from Sequence Orthology more info
involved_in regulation of actin filament polymerization	IMP Inferred from Mutant Phenotype more info	PubMed
involved_in regulation of dendrite development	IMP Inferred from Mutant Phenotype more info	PubMed

Component	Evidence Code	Pubs
located_in cytosol	ISO Inferred from Sequence Orthology more info
located_in dendritic shaft	IDA Inferred from Direct Assay more info	PubMed
located_in growth cone	IDA Inferred from Direct Assay more info	PubMed
located_in perinuclear region of cytoplasm	IDA Inferred from Direct Assay more info	PubMed
is_active_in plasma membrane	IBA Inferred from Biological aspect of Ancestor more info

General protein information

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Preferred Names: phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein

NCBI Reference Sequences (RefSeq)

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

NM_001135718.2 → NP_001129190.1 phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein

Status: PROVISIONAL

Source sequence(s)

JAXUCZ010000003

UniProtKB/TrEMBL

A0A8I6GLR6, D3ZS72

Related

ENSRNOP00000096783.1, ENSRNOT00000108011.2

Conserved Domains (7) summary

smart00228
Location:630 → 697

PDZ; Domain present in PSD-95, Dlg, and ZO-1/2

cd00136
Location:714 → 768

PDZ; PDZ domain, also called DHR (Dlg homologous region) or GLGF (after a conserved sequence motif). Many PDZ domains bind C-terminal polypeptides, though binding to internal (non-C-terminal) polypeptides and even to lipids has been demonstrated. ...

cd04440
Location:501 → 593

DEP_2_P-Rex; DEP (Dishevelled, Egl-10, and Pleckstrin) domain 2 found in P-Rex-like proteins. The P-Rex family is the guanine-nucleotide exchange factor (GEF) for the small GTPase Rac that contains an N-terminal RhoGEF domain, two DEP and PDZ domains. Rac-GEF ...

cd01224
Location:239 → 391

PH_Collybistin_ASEF; Collybistin/APC-stimulated guanine nucleotide exchange factor pleckstrin homology (PH) domain

pfam00169
Location:278 → 384

PH; PH domain

pfam00621
Location:48 → 234

RhoGEF; RhoGEF domain

cl02442
Location:409 → 489

DEP; DEP domain, named after Dishevelled, Egl-10, and Pleckstrin, where this domain was first discovered. The function of this domain is still not clear, but it is believed to be important for the membrane association of the signaling proteins in which it is ...

RefSeqs of Annotated Genomes: GCF_036323735.1-RS_2024_02

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference GRCr8

Genomic

NC_086021.1 Reference GRCr8

Range

175724939..175875764 complement

Download

GenBank, FASTA, Sequence Viewer (Graphics)

mRNA and Protein(s)

XM_039105138.2 → XP_038961066.1 phosphatidylinositol 3,4,5-trisphosphate-dependent Rac exchanger 1 protein isoform X1

Conserved Domains (1) summary

cd00136
Location:61 → 115

PDZ; PDZ domain, also called DHR (Dlg homologous region) or GLGF (after a conserved sequence motif). Many PDZ domains bind C-terminal polypeptides, though binding to internal (non-C-terminal) polypeptides and even to lipids has been demonstrated. ...