ROBO2
Roundabout homolog 2
Also known as: KIAA1568, ROBO2_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9HCK4
- Gene
- ROBO2
- Ensembl
- ENSG00000185008
- Chromosome
- 3
- Canonical length
- 1378 aa
- Protein class
- Disease related genes, Human disease related genes, Plasma proteins, Predicted intracellular proteins, Predicted membrane proteins
- Subcellular location
- Vesicles,Plasma membrane
OverviewNCBI Gene
The protein encoded by this gene belongs to the ROBO family, part of the immunoglobulin superfamily of proteins that are highly conserved from fly to human. The encoded protein is a transmembrane receptor for the slit homolog 2 protein and functions in axon guidance and cell migration. Mutations in this gene are associated with vesicoureteral reflux, characterized by the backward flow of urine from the bladder into the ureters or the kidney. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2014]
Canonical amino-acid sequenceUniProt
1378 residues, UniProt reviewed canonical sequence.
>Q9HCK4|ROBO2
1 MSLLMFTQLL LCGFLYVRVD GSRLRQEDFP PRIVEHPSDV IVSKGEPTTL NCKAEGRPTP
61 TIEWYKDGER VETDKDDPRS HRMLLPSGSL FFLRIVHGRR SKPDEGSYVC VARNYLGEAV
121 SRNASLEVAL LRDDFRQNPT DVVVAAGEPA ILECQPPRGH PEPTIYWKKD KVRIDDKEER
181 ISIRGGKLMI SNTRKSDAGM YTCVGTNMVG ERDSDPAELT VFERPTFLRR PINQVVLEEE
241 AVEFRCQVQG DPQPTVRWKK DDADLPRGRY DIKDDYTLRI KKTMSTDEGT YMCIAENRVG
301 KMEASATLTV RAPPQFVVRP RDQIVAQGRT VTFPCETKGN PQPAVFWQKE GSQNLLFPNQ
361 PQQPNSRCSV SPTGDLTITN IQRSDAGYYI CQALTVAGSI LAKAQLEVTD VLTDRPPPII
421 LQGPANQTLA VDGTALLKCK ATGDPLPVIS WLKEGFTFPG RDPRATIQEQ GTLQIKNLRI
481 SDTGTYTCVA TSSSGETSWS AVLDVTESGA TISKNYDLSD LPGPPSKPQV TDVTKNSVTL
541 SWQPGTPGTL PASAYIIEAF SQSVSNSWQT VANHVKTTLY TVRGLRPNTI YLFMVRAINP
601 QGLSDPSPMS DPVRTQDISP PAQGVDHRQV QKELGDVLVR LHNPVVLTPT TVQVTWTVDR
661 QPQFIQGYRV MYRQTSGLQA TSSWQNLDAK VPTERSAVLV NLKKGVTYEI KVRPYFNEFQ
721 GMDSESKTVR TTEEAPSAPP QSVTVLTVGS YNSTSISVSW DPPPPDHQNG IIQEYKIWCL
781 GNETRFHINK TVDAAIRSVI IGGLFPGIQY RVEVAASTSA GVGVKSEPQP IIIGRRNEVV
841 ITENNNSITE QITDVVKQPA FIAGIGGACW VILMGFSIWL YWRRKKRKGL SNYAVTFQRG
901 DGGLMSNGSR PGLLNAGDPS YPWLADSWPA TSLPVNNSNS GPNEIGNFGR GDVLPPVPGQ
961 GDKTATMLSD GAIYSSIDFT TKTSYNSSSQ ITQATPYATT QILHSNSIHE LAVDLPDPQW
1021 KSSIQQKTDL MGFGYSLPDQ NKGNNGGKGG KKKKNKNSSK PQKNNGSTWA NVPLPPPPVQ
1081 PLPGTELEHY AVEQQENGYD SDSWCPPLPV QTYLHQGLED ELEEDDDRVP TPPVRGVASS
1141 PAISFGQQST ATLTPSPREE MQPMLQAHLD ELTRAYQFDI AKQTWHIQSN NQPPQPPVPP
1201 LGYVSGALIS DLETDVADDD ADDEEEALEI PRPLRALDQT PGSSMDNLDS SVTGKAFTSS
1261 QRPRPTSPFS TDSNTSAALS QSQRPRPTKK HKGGRMDQQP ALPHRREGMT DEEALVPYSK
1321 PSFPSPGGHS SSGTASSKGS TGPRKTEVLR AGHQRNASDL LDIGYMGSNS QGQFTGELLocalizationUniProt · AlphaFold · HPA
Whether an antibody against ROBO2 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.
- Antibody reachability
- Cell surface
- Secreted
- No
- Transmembrane segments
- 1
- Mean surface accessibility (rSASA)
- 0.45
- Highest tissue expression
- 13 nTPM
Expression across tissuesHPA
Tissue
- ovary: 13 nTPM
- cerebral cortex: 10 nTPM
- retina: 7.4 nTPM
- lung: 6.8 nTPM
- thymus: 5.7 nTPM
- seminal vesicle: 4 nTPM
Single-cell type
- retinal ganglion cells: 3,971 nCPM
- brain inhibitory neurons: 3,594 nCPM
- retinal bipolar cells: 2,300 nCPM
- somatotrophs: 1,964 nCPM
- brain excitatory neurons: 1,736 nCPM
- lactotrophs: 1,602 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- spinal cord: 36 nTPM
- pons: 34 nTPM
- cerebral cortex: 33 nTPM
- midbrain: 32 nTPM
- basal ganglia: 28 nTPM
- white matter: 27 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about ROBO2.
Disease | AllUniProt
Conditions ROBO2 is implicated in, by any mechanism.
- Vesicoureteral reflux 2 (VUR2) MIM:610878
Genetic constraint and essentialitygnomAD · DepMap
Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.
- gnomAD LOEUF (loss-of-function intolerance)
- 0.16
- gnomAD pLI
- 1
- gnomAD missense Z
- 1.65
- DepMap mean gene effect
- -0.04
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- aorta development
- aortic valve morphogenesis
- apoptotic process involved in luteolysis
- axon guidance
- axon midline choice point recognition
- brain development
- cell-cell adhesion
- cellular response to hormone stimulus
- central nervous system development
- chemotaxis
- endocardial cushion formation
- heart induction
- homophilic cell adhesion via plasma membrane adhesion molecules
- metanephros development
- negative regulation of negative chemotaxis
- negative regulation of synapse assembly
- olfactory bulb interneuron development
- outflow tract septum morphogenesis
- positive regulation of axonogenesis
- positive regulation of Notch signaling pathway
- pulmonary valve morphogenesis
- retinal ganglion cell axon guidance
- ureteric bud development
- ventricular septum morphogenesis
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Immunoglobulin subtype 2
- Immunoglobulin domain subtype
- Fibronectin type III
- Immunoglobulin-like domain
- Immunoglobulin I-set
- Immunoglobulin V-set domain
- Immunoglobulin-like fold
- Fibronectin type III superfamily
- Immunoglobulin-like domain superfamily
- Neural and epithelial cell adhesion domain-containing protein
- Fibronectin type III domain
- Immunoglobulin I-set domain
- Immunoglobulin domain
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of ROBO2 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads ROBO2 as an antibody target. Whether an autoantibody or antibody against ROBO2 could matter depends on whether native ROBO2 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
ROBO2 is annotated at the cell surface, where native ROBO2 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.
Annotation status
The present source text does not explicitly label ROBO2 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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