EPB41L4B
Band 4.1-like protein 4B
Also known as: E41LB_HUMAN, EHM2, LULU2
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9H329
- Gene
- EPB41L4B
- Ensembl
- ENSG00000095203
- Chromosome
- 9
- Canonical length
- 900 aa
- Protein class
- Predicted intracellular proteins
- Subcellular location
- Plasma membrane,Cytosol
OverviewNCBI Gene
Predicted to be a structural constituent of cytoskeleton. Involved in several processes, including positive regulation of cell adhesion; positive regulation of keratinocyte migration; and wound healing. Acts upstream of or within actomyosin structure organization. Located in apical part of cell; cytosol; and plasma membrane. [provided by Alliance of Genome Resources, Jul 2025]
Canonical amino-acid sequenceUniProt
900 residues, UniProt reviewed canonical sequence.
>Q9H329|EPB41L4B
1 MLRFLRRTFG RRSMQRYARG AAGRGAAGLG DERDGGPRGG PAAAASSSAL PAAPGGSVFP
61 AGGGPLLTGG AAVHISAAGA AKATLYCRVF LLDGTEVSVD LPKHAKGQDL FDQIVYHLDL
121 VETDYFGLQF LDSAQVAHWL DHAKPIKKQM KIGPAYALHF RVKYYSSEPN NLREEFTRYL
181 FVLQLRHDIL SGKLKCPYET AVELAALCLQ AELGECELPE HTPELVSEFR FIPNQTEAME
241 FDIFQRWKEC RGKSPAQAEL SYLNKAKWLE MYGVDMHVVR GRDGCEYSLG LTPTGILIFE
301 GANKIGLFFW PKITKMDFKK SKLTLVVVED DDQGREQEHT FVFRLDSART CKHLWKCAVE
361 HHAFFRLRTP GNSKSNRSDF IRLGSRFRFS GRTEYQATHG SRLRRTSTFE RKPSKRYPSR
421 RHSTFKASNP VIAAQLCSKT NPEVHNYQPQ YHPNIHPSQP RWHPHSPNVS YPLPSPVLSS
481 SDRLPFGIEE NGGTPFLTAA SGRHHHQHQH QHQHQHHSNY SLSLTLENKE GPLRSPNSSS
541 KSLTKLSPGT PALFSEAAAH LKKLELETVK AAGPWPPLHI NINKAEEKKV SEKTLQTPLL
601 PSPVADHVKC NILKAQLENA SRVNIQGGKE ESPFVNINKK SSLQDASVRS PIPIRVETAQ
661 PAVEKPEIKP PRVRKLTRQY SFDEDDLPPD LAEAVGVTTS TTTNTTTAAT QVSVPLPSPK
721 VQNVSSPHKS EGKGLLSPGA KSPSDRGGAF TLEPGDLLMD FTEATPLAEP ASNPHCAHSR
781 CSPPLSLPMK EETTGVCMYP PIKTRLIKTF PVDTMNPFPD TFTTGPQFTA DFRDSKLQCC
841 PGPTSPLIPA ATLRPLTETV STVQTIYTTR KPVSLAASAE TLRQELEREK MMKRLLMTELLocalizationUniProt · AlphaFold · HPA
Whether an antibody against EPB41L4B 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
- 0
- Mean surface accessibility (rSASA)
- 0.54
- Highest tissue expression
- 141 nTPM
Expression across tissuesHPA
Tissue
- pancreas: 141 nTPM
- liver: 83 nTPM
- colon: 54 nTPM
- rectum: 53 nTPM
- small intestine: 49 nTPM
- duodenum: 45 nTPM
Single-cell type
- pancreatic acinar cells: 448 nCPM
- hepatocytes: 226 nCPM
- colonocytes: 179 nCPM
- retinal horizontal cells: 166 nCPM
- respiratory ciliated cells: 149 nCPM
- adipocytes: 128 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
- cerebral cortex: 37 nTPM
- choroid plexus: 37 nTPM
- hypothalamus: 34 nTPM
- basal ganglia: 29 nTPM
- spinal cord: 26 nTPM
- amygdala: 24 nTPM
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)
- 0.24
- gnomAD pLI
- 1
- gnomAD missense Z
- 1.25
- DepMap mean gene effect
- 0.04
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- actomyosin structure organization
- positive regulation of cell adhesion
- positive regulation of gene expression
- positive regulation of keratinocyte migration
- wound healing
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- FERM domain
- Ezrin/radixin/moesin-like
- PH-like domain superfamily
- FERM/acyl-CoA-binding protein superfamily
- FERM adjacent
- FERM, N-terminal
- FERM, C-terminal PH-like domain
- FERM conserved site
- FERM central domain
- Band 4.1 domain
- Ubiquitin-like domain superfamily
- FERM superfamily, second domain
- FERM central domain
- FERM adjacent (FA)
- FERM N-terminal domain
- FERM C-terminal PH-like domain
- Band 4.1-like protein 4B, FERM domain, F1 sub-domain
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of EPB41L4B 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 EPB41L4B as an antibody target. Whether an autoantibody or antibody against EPB41L4B could matter depends on whether native EPB41L4B is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
EPB41L4B is annotated at the cell surface, where native EPB41L4B 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 EPB41L4B as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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