UniProtKB - Q9BTN0 (LRFN3_HUMAN)
Protein
Leucine-rich repeat and fibronectin type-III domain-containing protein 3
Gene
LRFN3
Organism
Homo sapiens (Human)
Status
Functioni
Cell adhesion molecule that mediates homophilic cell-cell adhesion in a Ca2+-independent manner. Promotes neurite outgrowth in hippocampal neurons (By similarity).By similarity
GO - Biological processi
- regulation of presynapse assembly Source: GO_Central
- regulation of synaptic membrane adhesion Source: GO_Central
- synaptic membrane adhesion Source: GO_Central
Keywordsi
Biological process | Cell adhesion |
Enzyme and pathway databases
PathwayCommonsi | Q9BTN0 |
Reactomei | R-HSA-8849932, Synaptic adhesion-like molecules |
Names & Taxonomyi
Protein namesi | Recommended name: Leucine-rich repeat and fibronectin type-III domain-containing protein 3Alternative name(s): Synaptic adhesion-like molecule 4 |
Gene namesi | Name:LRFN3 Synonyms:SALM4 ORF Names:UNQ5865/PRO34192 |
Organismi | Homo sapiens (Human) |
Taxonomic identifieri | 9606 [NCBI] |
Taxonomic lineagei | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Proteomesi |
|
Organism-specific databases
EuPathDBi | HostDB:ENSG00000126243.8 |
HGNCi | HGNC:28370, LRFN3 |
MIMi | 612809, gene |
neXtProti | NX_Q9BTN0 |
Subcellular locationi
Plasma membrane
- Cell membrane By similarity; Single-pass type I membrane protein By similarity
- presynaptic cell membrane By similarity
- postsynaptic cell membrane By similarity
Other locations
Plasma Membrane
- integral component of postsynaptic density membrane Source: GO_Central
- integral component of presynaptic active zone membrane Source: GO_Central
- plasma membrane Source: Reactome
Other locations
- axon Source: UniProtKB-SubCell
- cell surface Source: GO_Central
- dendrite Source: UniProtKB-SubCell
- glutamatergic synapse Source: GO_Central
Topology
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Topological domaini | 17 – 539 | ExtracellularSequence analysisAdd BLAST | 523 | |
Transmembranei | 540 – 560 | HelicalSequence analysisAdd BLAST | 21 | |
Topological domaini | 561 – 628 | CytoplasmicSequence analysisAdd BLAST | 68 |
Keywords - Cellular componenti
Cell junction, Cell membrane, Cell projection, Membrane, Postsynaptic cell membrane, SynapsePathology & Biotechi
Organism-specific databases
DisGeNETi | 79414 |
OpenTargetsi | ENSG00000126243 |
PharmGKBi | PA134880779 |
Miscellaneous databases
Pharosi | Q9BTN0, Tdark |
Polymorphism and mutation databases
BioMutai | LRFN3 |
DMDMi | 62286945 |
PTM / Processingi
Molecule processing
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Signal peptidei | 1 – 16 | Sequence analysisAdd BLAST | 16 | |
ChainiPRO_0000014841 | 17 – 628 | Leucine-rich repeat and fibronectin type-III domain-containing protein 3Add BLAST | 612 |
Amino acid modifications
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Glycosylationi | 81 | N-linked (GlcNAc...) asparagineSequence analysis | 1 | |
Disulfide bondi | 317 ↔ 366 | PROSITE-ProRule annotation | ||
Glycosylationi | 339 | N-linked (GlcNAc...) asparagineSequence analysis | 1 | |
Glycosylationi | 348 | N-linked (GlcNAc...) asparagineSequence analysis | 1 | |
Glycosylationi | 393 | N-linked (GlcNAc...) asparagineSequence analysis | 1 | |
Glycosylationi | 462 | N-linked (GlcNAc...) asparagineSequence analysis | 1 |
Post-translational modificationi
N-glycosylated.By similarity
Keywords - PTMi
Disulfide bond, GlycoproteinProteomic databases
EPDi | Q9BTN0 |
MassIVEi | Q9BTN0 |
PaxDbi | Q9BTN0 |
PeptideAtlasi | Q9BTN0 |
PRIDEi | Q9BTN0 |
ProteomicsDBi | 79001 |
PTM databases
GlyGeni | Q9BTN0, 5 sites |
iPTMneti | Q9BTN0 |
PhosphoSitePlusi | Q9BTN0 |
Expressioni
Gene expression databases
Bgeei | ENSG00000126243, Expressed in cortical plate and 138 other tissues |
Genevisiblei | Q9BTN0, HS |
Organism-specific databases
HPAi | ENSG00000126243, Low tissue specificity |
Interactioni
Subunit structurei
Can form heteromeric complexes with LRFN1, LRFN2, LRFN4 and LRFN5. Able to form homomeric complexes across cell junctions, between adjacent cells. Does not interact with DLG4 (By similarity).
By similarityProtein-protein interaction databases
BioGRIDi | 122664, 26 interactors |
IntActi | Q9BTN0, 13 interactors |
STRINGi | 9606.ENSP00000466989 |
Miscellaneous databases
RNActi | Q9BTN0, protein |
Family & Domainsi
Domains and Repeats
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Domaini | 19 – 59 | LRRNTAdd BLAST | 41 | |
Repeati | 60 – 83 | LRR 1Add BLAST | 24 | |
Repeati | 84 – 105 | LRR 2Add BLAST | 22 | |
Repeati | 108 – 129 | LRR 3Add BLAST | 22 | |
Repeati | 132 – 153 | LRR 4Add BLAST | 22 | |
Repeati | 157 – 178 | LRR 5Add BLAST | 22 | |
Repeati | 181 – 202 | LRR 6Add BLAST | 22 | |
Repeati | 205 – 226 | LRR 7Add BLAST | 22 | |
Domaini | 249 – 295 | LRRCTAdd BLAST | 47 | |
Domaini | 295 – 382 | Ig-likeAdd BLAST | 88 | |
Domaini | 425 – 523 | Fibronectin type-IIIPROSITE-ProRule annotationAdd BLAST | 99 |
Domaini
Lacks a cytoplasmic PDZ-binding domain, which has been implicated in function of related Lrfn proteins.
Sequence similaritiesi
Belongs to the LRFN family.Curated
Keywords - Domaini
Immunoglobulin domain, Leucine-rich repeat, Repeat, Signal, Transmembrane, Transmembrane helixPhylogenomic databases
eggNOGi | KOG0619, Eukaryota |
GeneTreei | ENSGT00940000161203 |
HOGENOMi | CLU_016998_1_0_1 |
InParanoidi | Q9BTN0 |
OMAi | PWRPSHE |
OrthoDBi | 151757at2759 |
PhylomeDBi | Q9BTN0 |
Family and domain databases
CDDi | cd00063, FN3, 1 hit |
Gene3Di | 2.60.40.10, 2 hits 3.80.10.10, 2 hits |
InterProi | View protein in InterPro IPR000483, Cys-rich_flank_reg_C IPR003961, FN3_dom IPR036116, FN3_sf IPR007110, Ig-like_dom IPR036179, Ig-like_dom_sf IPR013783, Ig-like_fold IPR013098, Ig_I-set IPR003599, Ig_sub IPR003598, Ig_sub2 IPR001611, Leu-rich_rpt IPR003591, Leu-rich_rpt_typical-subtyp IPR032675, LRR_dom_sf |
Pfami | View protein in Pfam PF00041, fn3, 1 hit PF07679, I-set, 1 hit PF13855, LRR_8, 2 hits |
SMARTi | View protein in SMART SM00409, IG, 1 hit SM00408, IGc2, 1 hit SM00369, LRR_TYP, 6 hits SM00082, LRRCT, 1 hit |
SUPFAMi | SSF48726, SSF48726, 1 hit SSF49265, SSF49265, 1 hit |
PROSITEi | View protein in PROSITE PS50853, FN3, 1 hit PS50835, IG_LIKE, 1 hit |
i Sequence
Sequence statusi: Complete.
: The displayed sequence is further processed into a mature form. Sequence processingi
Q9BTN0-1 [UniParc]FASTAAdd to basket
10 20 30 40 50
MAILPLLLCL LPLAPASSPP QSATPSPCPR RCRCQTQSLP LSVLCPGAGL
60 70 80 90 100
LFVPPSLDRR AAELRLADNF IASVRRRDLA NMTGLLHLSL SRNTIRHVAA
110 120 130 140 150
GAFADLRALR ALHLDGNRLT SLGEGQLRGL VNLRHLILSN NQLAALAAGA
160 170 180 190 200
LDDCAETLED LDLSYNNLEQ LPWEALGRLG NVNTLGLDHN LLASVPAGAF
210 220 230 240 250
SRLHKLARLD MTSNRLTTIP PDPLFSRLPL LARPRGSPAS ALVLAFGGNP
260 270 280 290 300
LHCNCELVWL RRLAREDDLE ACASPPALGG RYFWAVGEEE FVCEPPVVTH
310 320 330 340 350
RSPPLAVPAG RPAALRCRAV GDPEPRVRWV SPQGRLLGNS SRARAFPNGT
360 370 380 390 400
LELLVTEPGD GGIFTCIAAN AAGEATAAVE LTVGPPPPPQ LANSTSCDPP
410 420 430 440 450
RDGDPDALTP PSAASASAKV ADTGPPTDRG VQVTEHGATA ALVQWPDQRP
460 470 480 490 500
IPGIRMYQIQ YNSSADDILV YRMIPAESRS FLLTDLASGR TYDLCVLAVY
510 520 530 540 550
EDSATGLTAT RPVGCARFST EPALRPCGAP HAPFLGGTMI IALGGVIVAS
560 570 580 590 600
VLVFIFVLLM RYKVHGGQPP GKAKIPAPVS SVCSQTNGAL GPTPTPAPPA
610 620
PEPAALRAHT VVQLDCEPWG PGHEPVGP
Experimental Info
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Sequence conflicti | 197 | Missing in AAQ88494 (PubMed:12975309).Curated | 1 |
Natural variant
Feature key | Position(s) | DescriptionActions | Graphical view | Length |
---|---|---|---|---|
Natural variantiVAR_049895 | 14 | A → V. Corresponds to variant dbSNP:rs34933126Ensembl. | 1 |
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AK172754 mRNA Translation: BAD18740.1 AY358127 mRNA Translation: AAQ88494.1 BC003578 mRNA Translation: AAH03578.1 |
CCDSi | CCDS12483.1 |
RefSeqi | NP_078785.1, NM_024509.1 XP_016882791.1, XM_017027302.1 |
Genome annotation databases
Ensembli | ENST00000246529; ENSP00000246529; ENSG00000126243 ENST00000588831; ENSP00000466989; ENSG00000126243 |
GeneIDi | 79414 |
KEGGi | hsa:79414 |
UCSCi | uc002oco.4, human |
Keywords - Coding sequence diversityi
PolymorphismSimilar proteinsi
Cross-referencesi
Sequence databases
Select the link destinations: EMBLi GenBanki DDBJi Links Updated | AK172754 mRNA Translation: BAD18740.1 AY358127 mRNA Translation: AAQ88494.1 BC003578 mRNA Translation: AAH03578.1 |
CCDSi | CCDS12483.1 |
RefSeqi | NP_078785.1, NM_024509.1 XP_016882791.1, XM_017027302.1 |
3D structure databases
ModBasei | Search... |
SWISS-MODEL-Workspacei | Submit a new modelling project... |
Protein-protein interaction databases
BioGRIDi | 122664, 26 interactors |
IntActi | Q9BTN0, 13 interactors |
STRINGi | 9606.ENSP00000466989 |
PTM databases
GlyGeni | Q9BTN0, 5 sites |
iPTMneti | Q9BTN0 |
PhosphoSitePlusi | Q9BTN0 |
Polymorphism and mutation databases
BioMutai | LRFN3 |
DMDMi | 62286945 |
Proteomic databases
EPDi | Q9BTN0 |
MassIVEi | Q9BTN0 |
PaxDbi | Q9BTN0 |
PeptideAtlasi | Q9BTN0 |
PRIDEi | Q9BTN0 |
ProteomicsDBi | 79001 |
Protocols and materials databases
Antibodypediai | 29620, 82 antibodies |
DNASUi | 79414 |
Genome annotation databases
Ensembli | ENST00000246529; ENSP00000246529; ENSG00000126243 ENST00000588831; ENSP00000466989; ENSG00000126243 |
GeneIDi | 79414 |
KEGGi | hsa:79414 |
UCSCi | uc002oco.4, human |
Organism-specific databases
CTDi | 79414 |
DisGeNETi | 79414 |
EuPathDBi | HostDB:ENSG00000126243.8 |
GeneCardsi | LRFN3 |
HGNCi | HGNC:28370, LRFN3 |
HPAi | ENSG00000126243, Low tissue specificity |
MIMi | 612809, gene |
neXtProti | NX_Q9BTN0 |
OpenTargetsi | ENSG00000126243 |
PharmGKBi | PA134880779 |
GenAtlasi | Search... |
Phylogenomic databases
eggNOGi | KOG0619, Eukaryota |
GeneTreei | ENSGT00940000161203 |
HOGENOMi | CLU_016998_1_0_1 |
InParanoidi | Q9BTN0 |
OMAi | PWRPSHE |
OrthoDBi | 151757at2759 |
PhylomeDBi | Q9BTN0 |
Enzyme and pathway databases
PathwayCommonsi | Q9BTN0 |
Reactomei | R-HSA-8849932, Synaptic adhesion-like molecules |
Miscellaneous databases
BioGRID-ORCSi | 79414, 6 hits in 842 CRISPR screens |
ChiTaRSi | LRFN3, human |
GenomeRNAii | 79414 |
Pharosi | Q9BTN0, Tdark |
PROi | PR:Q9BTN0 |
RNActi | Q9BTN0, protein |
SOURCEi | Search... |
Gene expression databases
Bgeei | ENSG00000126243, Expressed in cortical plate and 138 other tissues |
Genevisiblei | Q9BTN0, HS |
Family and domain databases
CDDi | cd00063, FN3, 1 hit |
Gene3Di | 2.60.40.10, 2 hits 3.80.10.10, 2 hits |
InterProi | View protein in InterPro IPR000483, Cys-rich_flank_reg_C IPR003961, FN3_dom IPR036116, FN3_sf IPR007110, Ig-like_dom IPR036179, Ig-like_dom_sf IPR013783, Ig-like_fold IPR013098, Ig_I-set IPR003599, Ig_sub IPR003598, Ig_sub2 IPR001611, Leu-rich_rpt IPR003591, Leu-rich_rpt_typical-subtyp IPR032675, LRR_dom_sf |
Pfami | View protein in Pfam PF00041, fn3, 1 hit PF07679, I-set, 1 hit PF13855, LRR_8, 2 hits |
SMARTi | View protein in SMART SM00409, IG, 1 hit SM00408, IGc2, 1 hit SM00369, LRR_TYP, 6 hits SM00082, LRRCT, 1 hit |
SUPFAMi | SSF48726, SSF48726, 1 hit SSF49265, SSF49265, 1 hit |
PROSITEi | View protein in PROSITE PS50853, FN3, 1 hit PS50835, IG_LIKE, 1 hit |
ProtoNeti | Search... |
MobiDBi | Search... |
Entry informationi
Entry namei | LRFN3_HUMAN | |
Accessioni | Q9BTN0Primary (citable) accession number: Q9BTN0 Secondary accession number(s): Q6UY10 | |
Entry historyi | Integrated into UniProtKB/Swiss-Prot: | March 29, 2005 |
Last sequence update: | June 1, 2001 | |
Last modified: | December 2, 2020 | |
This is version 166 of the entry and version 1 of the sequence. See complete history. | ||
Entry statusi | Reviewed (UniProtKB/Swiss-Prot) | |
Annotation program | Chordata Protein Annotation Program | |
Disclaimer | Any 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
Reference proteomeDocuments
- Human polymorphisms and disease mutations
Index of human polymorphisms and disease mutations - MIM cross-references
Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot - SIMILARITY comments
Index of protein domains and families - Human chromosome 19
Human chromosome 19: entries, gene names and cross-references to MIM - Human entries with polymorphisms or disease mutations
List of human entries with polymorphisms or disease mutations