Seroatlas · Human Serome Atlas

BAMBI

BMP and activin membrane-bound inhibitor homolog

Also known as: BAMBI_HUMAN, NMA

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q13145
Gene
BAMBI
Ensembl
ENSG00000095739
Chromosome
10
Canonical length
260 aa
Protein class
Plasma proteins, Predicted membrane proteins
Subcellular location
Nucleoli fibrillar center,Vesicles,Lipid droplets

OverviewNCBI Gene

This gene encodes a transmembrane glycoprotein related to the type I receptors of the transforming growth factor-beta (TGF-beta) family, whose members play important roles in signal transduction in many developmental and pathological processes. The encoded protein however is a pseudoreceptor, lacking an intracellular serine/threonine kinase domain required for signaling. Similar proteins in frog, mouse and zebrafish function as negative regulators of TGF-beta, which has led to the suggestion that the encoded protein may function to limit the signaling range of the TGF-beta family during early embryogenesis. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

260 residues, UniProt reviewed canonical sequence.

>Q13145|BAMBI
     1  MDRHSSYIFI WLQLELCAMA VLLTKGEIRC YCDAAHCVAT GYMCKSELSA CFSRLLDPQN
    61  SNSPLTHGCL DSLASTTDIC QAKQARNHSG TTIPTLECCH EDMCNYRGLH DVLSPPRGEA
   121  SGQGNRYQHD GSRNLITKVQ ELTSSKELWF RAAVIAVPIA GGLILVLLIM LALRMLRSEN
   181  KRLQDQRQQM LSRLHYSFHG HHSKKGQVAK LDLECMVPVS GHENCCLTCD KMRQADLSND
   241  KILSLVHWGM YSGHGKLEFV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against BAMBI 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)
0.54
Highest tissue expression
59 nTPM

Expression across tissuesHPA

Tissue

  • ovary: 59 nTPM
  • heart muscle: 47 nTPM
  • adrenal gland: 42 nTPM
  • choroid plexus: 38 nTPM
  • placenta: 37 nTPM
  • urinary bladder: 32 nTPM

Single-cell type

  • breast hormone-responsive cells: 291 nCPM
  • breast secretory cells: 185 nCPM
  • epididymal efferent duct absorptive cells: 108 nCPM
  • breast myoepithelial cells: 107 nCPM
  • platelets: 101 nCPM
  • müller glia: 96 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

  • white matter: 30 nTPM
  • pons: 28 nTPM
  • choroid plexus: 27 nTPM
  • medulla oblongata: 26 nTPM
  • cerebellum: 22 nTPM
  • midbrain: 19 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)
1.24
gnomAD pLI
0
gnomAD missense Z
-0.1
DepMap mean gene effect
-0.07
DepMap dependency class
selective

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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

  • Snake toxin-like superfamily
  • BMP and activin membrane-bound inhibitor
  • BMP and activin membrane-bound inhibitor, C-terminal domain
  • BMP and activin membrane-bound inhibitor, N-terminal domain
  • BMP and activin membrane-bound inhibitor (BAMBI) N-terminal domain
  • BMP and activin membrane-bound inhibitor homolog C-terminus

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads BAMBI as an antibody target. Whether an autoantibody or antibody against BAMBI could matter depends on whether native BAMBI is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

BAMBI is annotated at the cell surface, where native BAMBI 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 BAMBI as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/BAMBI. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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