Protein: BPIA1
BPI fold-containing family A member 1 (Lung-specific protein X) (Nasopharyngeal carcinoma-related protein) (Palate lung and nasal epithelium clone protein) (Secretory protein in upper respiratory tracts) (Short PLUNC1) (SPLUNC1) (Tracheal epithelium-enriched protein) (Von Ebner protein Hl)

Gene: BPIA1, BPIFA1
Organism: Homo sapiens
Interactions: 110
UniProt ID: Q9NP55

Gene Ontology (top 5):
GO:0002395 - immune response in nasopharyngeal-associated lymphoid tissue
GO:0005576 - extracellular region
GO:0005615 - extracellular space
GO:0008289 - lipid binding
GO:0019731 - antibacterial humoral response

Download interactions: TXT   MITAB-2.5

Interaction Interactor Experiments Homologs Category Interaction
Score
Confidence

948138

BPIB3
BPI fold-containing family B member 3

1

0

High-throughput

0.631

High

1445827

UBQL1
Ubiquilin-1

3

2

High-throughput

0.616

High

1400554

TM237
Transmembrane protein 237

3

1

High-throughput

0.609

High

704456

GRAN
Grancalcin

2

1

High-throughput

0.606

High

1445817

BPIA1
BPI fold-containing family A member 1

1

0

High-throughput

0.589

High

473477

HCK
Tyrosine-protein kinase HCK

2

0

High-throughput

0.580

High

633799

PSB1
Proteasome subunit beta type-1

2

0

High-throughput

0.580

High

694398

CO8A1
Collagen alpha-1(VIII) chain

2

0

High-throughput

0.580

High

1163707

PCKGM
Phosphoenolpyruvate carboxykinase [GTP], mitochondrial

2

1

High-throughput

0.574

High

1231232

HBM
Hemoglobin subunit mu

2

2

High-throughput

0.574

High

1396821

SNX27
Sorting nexin-27

2

1

High-throughput

0.574

High

1436284

DDX31
ATP-dependent DNA helicase DDX31

2

1

High-throughput

0.574

High

775916

HNF1B
Hepatocyte nuclear factor 1-beta

2

1

High-throughput

0.553

High

1406548

KI2L4
Killer cell immunoglobulin-like receptor 2DL4

2

1

High-throughput

0.553

High

1445823

PEF1
Peflin

2

1

High-throughput

0.553

High

1445824

UBQL2
Ubiquilin-2

2

2

High-throughput

0.553

High

210787

KLK10
Kallikrein-10

1

1

High-throughput

0.536

High

1332804

FNDC5
Fibronectin type III domain-containing protein 5

1

1

High-throughput

0.536

High

1359780

ITLN2
Intelectin-2

1

1

High-throughput

0.536

High

1393123

ERO1A
ERO1-like protein alpha

1

1

High-throughput

0.536

High

1372493

WNT8B
Protein Wnt-8b

1

0

High-throughput

0.513

High

1394844

LOXL4
Lysyl oxidase homolog 4

1

0

High-throughput

0.513

High

1445828

NTNG1
Netrin-G1

1

0

High-throughput

0.513

High

1445819

UBQL4
Ubiquilin-4

1

2

High-throughput

0.494

High

133880

FOXN3
Forkhead box protein N3

1

1

High-throughput

0.489

High

354036

CX001
Putative transmembrane protein CXorf1

1

1

High-throughput

0.489

High

839091

PK3CA
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform

1

1

High-throughput

0.489

High

889508

CLK1
Dual specificity protein kinase CLK1

1

1

High-throughput

0.489

High

1085925

TWF1
Twinfilin-1

1

1

High-throughput

0.489

High

1191532

T176B
Transmembrane protein 176B

1

1

High-throughput

0.489

High

1242322

SFXN4
Sideroflexin-4

1

1

High-throughput

0.489

High

1251716

SPNS3
Protein spinster homolog 3

1

1

High-throughput

0.489

High

1325724

RIBC1
RIB43A-like with coiled-coils protein 1

1

1

High-throughput

0.489

High

1340012

O13C3
Olfactory receptor 13C3

1

1

High-throughput

0.489

High

1381454

PMEPA
Protein TMEPAI

1

1

High-throughput

0.489

High

1409579

RSLBB
Ras-like protein family member 11B

1

1

High-throughput

0.489

High

1410077

USB1
U6 snRNA phosphodiesterase 1

1

1

High-throughput

0.489

High

1437572

COE2
Transcription factor COE2

1

1

High-throughput

0.489

High

1445826

GBG8
Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-8

1

1

High-throughput

0.489

High

1333342

NHLC2
NHL repeat-containing protein 2

1

1

High-throughput

0.479

High

2936

A0A0C4DGQ7
EMAP like 2

1

1

High-throughput

0.470

High

508674

UBC
Polyubiquitin-C [Cleaved into: Ubiquitin]

1

0

High-throughput

0.458

High

229284

ANGL7
Angiopoietin-related protein 7

1

1

High-throughput

0.445

High

664939

CRHBP
Corticotropin-releasing factor-binding protein

1

1

High-throughput

0.445

High

1408262

EGFL8
Epidermal growth factor-like protein 8

1

1

High-throughput

0.445

High

1445831

PRG3
Proteoglycan 3

1

1

High-throughput

0.445

High

348917

EMAL2
Echinoderm microtubule-associated protein-like 2

1

1

High-throughput

0.439

High

1236141

TET2
Methylcytosine dioxygenase TET2

1

1

Small-scale

0.437

High

1367343

ESR2
Estrogen receptor beta

1

1

High-throughput

0.437

High

1292346

ZC3C1
Zinc finger C3HC-type protein 1

1

1

High-throughput

0.407

High

1380018

SMCE1
SWI/SNF-related matrix-associated actin-dependent regulator of chromatin subfamily E member 1

1

1

High-throughput

0.407

High

1414728

RSRP1
Arginine/serine-rich protein 1

1

2

High-throughput

0.407

High

1226008

ICE2
Little elongation complex subunit 2

3

0

High-throughput

0.347

High

71080

CSKMT
Citrate synthase-lysine N-methyltransferase CSKMT, mitochondrial

2

0

High-throughput

0.316

High

128558

SIRB1
Signal-regulatory protein beta-1

2

0

High-throughput

0.316

High

163475

MEIS2
Homeobox protein Meis2

2

0

High-throughput

0.316

High

216287

PPIH
Peptidyl-prolyl cis-trans isomerase H

2

0

High-throughput

0.316

High

225119

TLX3
T-cell leukemia homeobox protein 3

2

0

High-throughput

0.316

High

506772

PRR35
Proline-rich protein 35

2

0

High-throughput

0.316

High

551594

K2C3
Keratin, type II cytoskeletal 3

2

0

High-throughput

0.316

High

604872

HXB9
Homeobox protein Hox-B9

2

0

High-throughput

0.316

High

837096

ELK3
ETS domain-containing protein Elk-3

2

0

High-throughput

0.316

High

922370

CRBA2
Beta-crystallin A2

2

0

High-throughput

0.316

High

1005648

PITX1
Pituitary homeobox 1

2

0

High-throughput

0.316

High

1029042

TIAR
Nucleolysin TIAR

2

0

High-throughput

0.316

High

1061884

TLE5
TLE family member 5

2

0

High-throughput

0.316

High

1081488

INCA1
Protein INCA1

2

0

High-throughput

0.316

High

1093722

MKRN3
E3 ubiquitin-protein ligase makorin-3

2

0

High-throughput

0.316

High

1135995

RTP5
Receptor-transporting protein 5

2

0

High-throughput

0.316

High

1239789

FAP20
Fanconi anemia core complex-associated protein 20

2

0

High-throughput

0.316

High

1271971

ZN765
Zinc finger protein 765

2

0

High-throughput

0.316

High

1276162

NUP54
Nucleoporin p54

2

0

High-throughput

0.316

High

1347089

G45IP
Large ribosomal subunit protein mL64

2

0

High-throughput

0.316

High

1356266

F222B
Protein FAM222B

2

0

High-throughput

0.316

High

1367804

TFG
Protein TFG

2

0

High-throughput

0.316

High

1397059

HSFY1
Heat shock transcription factor, Y-linked

2

0

High-throughput

0.316

High

1398719

AP4AT
AP-4 complex accessory subunit Tepsin

2

0

High-throughput

0.316

High

1399260

SAM11
Sterile alpha motif domain-containing protein 11

2

0

High-throughput

0.316

High

1407030

NPAS2
Neuronal PAS domain-containing protein 2

2

0

High-throughput

0.316

High

1411120

VPS25
Vacuolar protein-sorting-associated protein 25

2

0

High-throughput

0.316

High

1413541

RAMAC
RNA guanine-N7 methyltransferase activating subunit

2

0

High-throughput

0.316

High

1415024

SNR25
U11/U12 small nuclear ribonucleoprotein 25 kDa protein

2

0

High-throughput

0.316

High

1415506

RUSC1
AP-4 complex accessory subunit RUSC1

2

0

High-throughput

0.316

High

1431969

IF3M
Translation initiation factor IF-3, mitochondrial

2

0

High-throughput

0.316

High

1434548

DUS21
Dual specificity protein phosphatase 21

2

0

High-throughput

0.316

High

1438120

PATZ1
POZ-, AT hook-, and zinc finger-containing protein 1

2

0

High-throughput

0.316

High

1445818

TF7L2
Transcription factor 7-like 2

2

0

High-throughput

0.316

High

1445820

SOSSC
SOSS complex subunit C

2

0

High-throughput

0.316

High

1445821

ALKB4
Alpha-ketoglutarate-dependent dioxygenase alkB homolog 4

2

0

High-throughput

0.316

High

1445825

RSP14
Radial spoke head 14 homolog

2

0

High-throughput

0.316

High

256689

HNRC1
Heterogeneous nuclear ribonucleoprotein C-like 1

1

0

High-throughput

0.279

Low

570604

GFAP
Glial fibrillary acidic protein

1

0

High-throughput

0.279

Low

627574

DPA1
HLA class II histocompatibility antigen, DP alpha 1 chain

1

0

High-throughput

0.279

Low

1059058

TRHY
Trichohyalin

1

0

High-throughput

0.279

Low

1081678

TM267
Transmembrane protein 267

1

0

High-throughput

0.279

Low

1200498

H1BP3
HCLS1-binding protein 3

1

0

High-throughput

0.279

Low

1309517

ZN695
Zinc finger protein 695

1

0

High-throughput

0.279

Low

1332156

SR1IP
Protein SREK1IP1

1

0

High-throughput

0.279

Low

1414071

MKNK1
MAP kinase-interacting serine/threonine-protein kinase 1

1

0

High-throughput

0.279

Low

1433432

CSTN2
Calsyntenin-2

1

0

High-throughput

0.279

Low

1348521

LNX1
E3 ubiquitin-protein ligase LNX

1

0

Small-scale

0.251

Low

219882

SMAD6
Mothers against decapentaplegic homolog 6

1

0

Small-scale

0.249

Low

1132991

CHD4
Chromodomain-helicase-DNA-binding protein 4

1

0

High-throughput

0.249

Low

1387010

ORAI1
Calcium release-activated calcium channel protein 1

1

0

Small-scale

0.249

Low

1445829

NINL
Ninein-like protein

1

0

High-throughput

0.249

Low

1445830

UBP20
Ubiquitin carboxyl-terminal hydrolase 20

1

0

Small-scale

0.249

Low

1445832

M4K5
Mitogen-activated protein kinase kinase kinase kinase 5

1

0

High-throughput

0.249

Low

430387

JUN
Transcription factor Jun

1

0

High-throughput

0.232

Low

1445822

CCG4
Voltage-dependent calcium channel gamma-4 subunit

1

0

High-throughput

0.232

Low


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Last updated: 11Aug2025