SLIT1
Slit homolog 1 protein
Also known as: MEGF4, SLIL1, Slit-1, SLIT1_HUMAN, SLIT3
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O75093
- Gene
- SLIT1
- Ensembl
- ENSG00000187122
- Chromosome
- 10
- Canonical length
- 1534 aa
- Protein class
- Predicted secreted proteins
- Subcellular location
- Plasma membrane
- Secretome location
- Secreted in brain
OverviewNCBI Gene
Enables Roundabout binding activity. Involved in axon extension involved in axon guidance; motor neuron axon guidance; and negative chemotaxis. Predicted to be located in extracellular region. Predicted to be active in extracellular space. [provided by Alliance of Genome Resources, Jul 2025]
Canonical amino-acid sequenceUniProt
1534 residues, UniProt reviewed canonical sequence.
>O75093|SLIT1
1 MALTPGWGSS AGPVRPELWL LLWAAAWRLG ASACPALCTC TGTTVDCHGT GLQAIPKNIP
61 RNTERLELNG NNITRIHKND FAGLKQLRVL QLMENQIGAV ERGAFDDMKE LERLRLNRNQ
121 LHMLPELLFQ NNQALSRLDL SENAIQAIPR KAFRGATDLK NLQLDKNQIS CIEEGAFRAL
181 RGLEVLTLNN NNITTIPVSS FNHMPKLRTF RLHSNHLFCD CHLAWLSQWL RQRPTIGLFT
241 QCSGPASLRG LNVAEVQKSE FSCSGQGEAG RVPTCTLSSG SCPAMCTCSN GIVDCRGKGL
301 TAIPANLPET MTEIRLELNG IKSIPPGAFS PYRKLRRIDL SNNQIAEIAP DAFQGLRSLN
361 SLVLYGNKIT DLPRGVFGGL YTLQLLLLNA NKINCIRPDA FQDLQNLSLL SLYDNKIQSL
421 AKGTFTSLRA IQTLHLAQNP FICDCNLKWL ADFLRTNPIE TSGARCASPR RLANKRIGQI
481 KSKKFRCSAK EQYFIPGTED YQLNSECNSD VVCPHKCRCE ANVVECSSLK LTKIPERIPQ
541 STAELRLNNN EISILEATGM FKKLTHLKKI NLSNNKVSEI EDGAFEGAAS VSELHLTANQ
601 LESIRSGMFR GLDGLRTLML RNNRISCIHN DSFTGLRNVR LLSLYDNQIT TVSPGAFDTL
661 QSLSTLNLLA NPFNCNCQLA WLGGWLRKRK IVTGNPRCQN PDFLRQIPLQ DVAFPDFRCE
721 EGQEEGGCLP RPQCPQECAC LDTVVRCSNK HLRALPKGIP KNVTELYLDG NQFTLVPGQL
781 STFKYLQLVD LSNNKISSLS NSSFTNMSQL TTLILSYNAL QCIPPLAFQG LRSLRLLSLH
841 GNDISTLQEG IFADVTSLSH LAIGANPLYC DCHLRWLSSW VKTGYKEPGI ARCAGPQDME
901 GKLLLTTPAK KFECQGPPTL AVQAKCDLCL SSPCQNQGTC HNDPLEVYRC ACPSGYKGRD
961 CEVSLDSCSS GPCENGGTCH AQEGEDAPFT CSCPTGFEGP TCGVNTDDCV DHACANGGVC
1021 VDGVGNYTCQ CPLQYEGKAC EQLVDLCSPD LNPCQHEAQC VGTPDGPRCE CMPGYAGDNC
1081 SENQDDCRDH RCQNGAQCMD EVNSYSCLCA EGYSGQLCEI PPHLPAPKSP CEGTECQNGA
1141 NCVDQGNRPV CQCLPGFGGP ECEKLLSVNF VDRDTYLQFT DLQNWPRANI TLQVSTAEDN
1201 GILLYNGDND HIAVELYQGH VRVSYDPGSY PSSAIYSAET INDGQFHTVE LVAFDQMVNL
1261 SIDGGSPMTM DNFGKHYTLN SEAPLYVGGM PVDVNSAAFR LWQILNGTGF HGCIRNLYIN
1321 NELQDFTKTQ MKPGVVPGCE PCRKLYCLHG ICQPNATPGP MCHCEAGWVG LHCDQPADGP
1381 CHGHKCVHGQ CVPLDALSYS CQCQDGYSGA LCNQAGALAE PCRGLQCLHG HCQASGTKGA
1441 HCVCDPGFSG ELCEQESECR GDPVRDFHQV QRGYAICQTT RPLSWVECRG SCPGQGCCQG
1501 LRLKRRKFTF ECSDGTSFAE EVEKPTKCGC ALCALocalizationUniProt · AlphaFold · HPA
Whether an antibody against SLIT1 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
- Secreted
- Secreted
- Yes
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.31
- Highest tissue expression
- 33 nTPM
Expression across tissuesHPA
Tissue
- cerebral cortex: 33 nTPM
- basal ganglia: 23 nTPM
- hippocampal formation: 20 nTPM
- amygdala: 20 nTPM
- hypothalamus: 15 nTPM
- pituitary gland: 13 nTPM
Single-cell type
- somatotrophs: 501 nCPM
- thyrotrophs: 318 nCPM
- brain excitatory neurons: 134 nCPM
- early spermatids: 105 nCPM
- late spermatids: 75 nCPM
- other brain neurons: 67 nCPM
Immune cell
- myeloid DC: 0.2 nTPM
- plasmacytoid DC: 0.2 nTPM
- intermediate monocyte: 0.1 nTPM
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
Brain region
- cerebral cortex: 110 nTPM
- basal ganglia: 103 nTPM
- hippocampal formation: 100 nTPM
- hypothalamus: 70 nTPM
- amygdala: 64 nTPM
- white matter: 60 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about SLIT1.
Disease | GeneticClinVar
1 pathogenic / likely-pathogenic of 212 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Monomelic amyotrophy
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)
- 0.22
- gnomAD pLI
- 1
- gnomAD missense Z
- 3.09
- DepMap mean gene effect
- 0.06
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- axon extension involved in axon guidance
- axon guidance
- dorsal/ventral axon guidance
- forebrain morphogenesis
- motor neuron axon guidance
- negative chemotaxis
- negative regulation of axon extension involved in axon guidance
- negative regulation of synapse assembly
- nuclear migration
- retinal ganglion cell axon guidance
- spinal cord development
- tangential migration from the subventricular zone to the olfactory bulb
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- EGF-type aspartate/asparagine hydroxylation site
- Leucine-rich repeat N-terminal domain
- Cysteine-rich flanking region, C-terminal
- EGF-like domain
- Leucine-rich repeat
- Laminin G domain
- EGF-like calcium-binding domain
- Leucine-rich repeat, typical subtype
- Follistatin-like, N-terminal
- Cystine knot, C-terminal
- Growth factor receptor cysteine-rich domain superfamily
- EGF-like, conserved site
- Concanavalin A-like lectin/glucanase domain superfamily
- EGF-like calcium-binding, conserved site
- Leucine-rich repeat domain superfamily
- Notch and Slit guidance protein
- EGF-like domain
- Leucine rich repeat N-terminal domain
- Leucine rich repeat C-terminal domain
- Laminin G domain
- Human growth factor-like EGF
- Leucine rich repeat
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of SLIT1 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 SLIT1 as an antibody target. Whether an autoantibody or antibody against SLIT1 could matter depends on whether native SLIT1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
SLIT1 is annotated as secreted, so native SLIT1 circulates and is directly accessible to antibodies. Secreted and cell-surface proteins are the autoantibody targets most likely to act like drugs, blocking or depleting the native protein.
Annotation status
The present source text does not explicitly label SLIT1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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