Protein: GPA1
Guanine nucleotide-binding protein alpha-1 subunit (GP-alpha-1)

Gene: GPA1
Organism: Arabidopsis thaliana
Interactions: 61
UniProt ID: P18064

Gene Ontology (top 5):
GO:0001664 - G protein-coupled receptor binding
GO:0003376 - sphingosine-1-phosphate receptor signaling pathway
GO:0003924 - GTPase activity
GO:0005095 - GTPase inhibitor activity
GO:0005525 - GTP binding

Download interactions: TXT   MITAB-2.5

Interaction Interactor Experiments Homologs Category Interaction
Score
Confidence

611593

RGS1
Regulator of G-protein signaling 1

6

0

Small-scale

0.893

High

611623

THF1
Protein THYLAKOID FORMATION 1, chloroplastic

2

0

Small-scale

0.620

High

146979

GCR1
G-protein coupled receptor 1

2

0

Small-scale

0.618

High

611614

PRN1
Pirin-1

2

0

Small-scale

0.593

High

611586

PLDA1
Phospholipase D alpha 1

2

0

Small-scale

0.587

High

611582

GBB
Guanine nucleotide-binding protein subunit beta

2

20

Small-scale

0.586

High

611584

GTG2
GPCR-type G protein 2

1

1

Small-scale

0.582

High

611626

GTG1
GPCR-type G protein 1

1

1

Small-scale

0.582

High

100744

GCR2
LanC-like protein GCR2

1

0

Small-scale

0.573

High

71915

CERK1
Chitin elicitor receptor kinase 1

1

1

Small-scale

0.527

High

611601

BAK1
BRASSINOSTEROID INSENSITIVE 1-associated receptor kinase 1

1

1

Small-scale

0.527

High

611604

Y5838
Probably inactive leucine-rich repeat receptor-like protein kinase At5g48380

1

1

Small-scale

0.527

High

611627

AROD3
Arogenate dehydratase 3, chloroplastic

1

2

Small-scale

0.527

High

611605

CAAT9
Cationic amino acid transporter 9, chloroplastic

1

3

High-throughput

0.494

High

308213

BAG6
BAG family molecular chaperone regulator 6

1

5

High-throughput

0.481

High

611583

CDPK1
Calcium-dependent protein kinase 1

1

1

High-throughput

0.481

High

611589

CPY57
Peptidyl-prolyl cis-trans isomerase CYP57

1

1

High-throughput

0.481

High

611602

UCRI1
Cytochrome b-c1 complex subunit Rieske-1, mitochondrial

1

3

High-throughput

0.481

High

611607

Y5659
Probable inactive receptor kinase At5g16590

1

1

High-throughput

0.481

High

611616

UCRI2
Cytochrome b-c1 complex subunit Rieske-2, mitochondrial

1

3

High-throughput

0.481

High

611619

AROD1
Arogenate dehydratase/prephenate dehydratase 1, chloroplastic

1

2

High-throughput

0.481

High

265656

NDK2
Nucleoside diphosphate kinase II, chloroplastic

1

0

Small-scale

0.480

High

308171

AGP16
Arabinogalactan protein 16

1

0

High-throughput

0.460

High

611581

SODF1
Superoxide dismutase [Fe] 1, chloroplastic

1

0

High-throughput

0.460

High

611587

XTH4
Xyloglucan endotransglucosylase/hydrolase protein 4

1

0

High-throughput

0.460

High

611595

CSN5A
COP9 signalosome complex subunit 5a

1

0

High-throughput

0.460

High

611603

EF2
Elongation factor 2

1

0

High-throughput

0.460

High

611609

CAS
Calcium sensing receptor, chloroplastic

1

0

High-throughput

0.460

High

611610

DEF1B
Peptide deformylase 1B, chloroplastic/mitochondrial

1

0

High-throughput

0.460

High

611615

KN14A
Kinesin-like protein KIN-14A

1

0

High-throughput

0.460

High

611622

RS252
Small ribosomal subunit protein eS25y

1

0

High-throughput

0.460

High

103256

CAND8
Protein CANDIDATE G-PROTEIN COUPLED RECEPTOR 8

1

1

Small-scale

0.457

High

611600

CAND2
Protein CANDIDATE G-PROTEIN COUPLED RECEPTOR 2

1

1

Small-scale

0.457

High

264843

TCP9
Transcription factor TCP9

1

2

High-throughput

0.439

High

611597

Q8VXV0
AT3g52570/F22O6_50

1

2

High-throughput

0.439

High

611608

TCP7
Transcription factor TCP7

1

2

High-throughput

0.439

High

611612

EIF3A
Eukaryotic translation initiation factor 3 subunit A

1

4

High-throughput

0.439

High

611613

Q9LML3
Small ribosomal subunit protein bS18c

1

2

High-throughput

0.439

High

611617

TCP16
Transcription factor TCP16

1

2

High-throughput

0.439

High

611620

VOZ1
Transcription factor VOZ1

1

1

High-throughput

0.439

High

611624

VOZ2
Transcription factor VOZ2

1

1

High-throughput

0.439

High

102960

CAND7
Protein CANDIDATE G-PROTEIN COUPLED RECEPTOR 7

1

0

Small-scale

0.438

High

611606

GG1
Guanine nucleotide-binding protein subunit gamma 1

1

0

Small-scale

0.426

High

86183

B9DGA1
AT3G59090 protein

1

1

Small-scale

0.417

High

611591

HHP2
Heptahelical transmembrane protein 2

1

2

Small-scale

0.417

High

611599

Q945Q2
AT3g59090/F17J16_140

1

1

Small-scale

0.417

High

611594

Q8LAB7
At5g26790

1

0

High-throughput

0.282

High

75809

B3LFC8
At5g24620

1

0

High-throughput

0.251

Low

102073

F4JEA6
Quinoprotein amine dehydrogenase, beta chain-like RIC1-like guanyl-nucleotide exchange factor

1

0

High-throughput

0.251

Low

146650

SYP23
Syntaxin-23

1

0

High-throughput

0.251

Low

235915

MYB32
Transcription factor MYB32

1

0

High-throughput

0.251

Low

611585

Q29QC1
At1g09995

1

0

High-throughput

0.251

Low

611588

PUX9
Plant UBX domain-containing protein 9

1

0

High-throughput

0.251

Low

611590

RHIP1
RGS1-HXK1-interacting protein 1

1

0

High-throughput

0.251

Low

611592

MTND4
Acireductone dioxygenase 4

1

0

High-throughput

0.251

Low

611596

SPX1
SPX domain-containing protein 1

1

0

High-throughput

0.251

Low

611598

Q8VZ21
Stress up-regulated Nod 19 protein

1

0

High-throughput

0.251

Low

611618

TCP3
Transcription factor TCP3

1

0

High-throughput

0.251

Low

611621

Q9SIJ8
Adenine nucleotide alpha hydrolases-like superfamily protein

1

0

High-throughput

0.251

Low

611625

GDU2
Protein GLUTAMINE DUMPER 2

1

0

High-throughput

0.251

Low

611611

Q9FVT5
Plasminogen activator inhibitor

1

0

Small-scale

0.238

Low


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Last updated: 11Aug2025