Protein: AHK2
Histidine kinase 2 (EC 2.7.13.3) (Arabidopsis histidine kinase 2) (AtHK2) (Protein AUTHENTIC HIS-KINASE 2)

Gene: AHK2
Organism: Arabidopsis thaliana
Interactions: 52
UniProt ID: Q9C5U2

Gene Ontology (top 5):
GO:0000155 - phosphorelay sensor kinase activity
GO:0004673 - protein histidine kinase activity
GO:0005789 - endoplasmic reticulum membrane
GO:0005886 - plasma membrane
GO:0006970 - response to osmotic stress

Download interactions: TXT   MITAB-2.5

Interaction Interactor Experiments Homologs Category Interaction
Score
Confidence

1421719

AHP3
Histidine-containing phosphotransfer protein 3

2

20

Small-scale

0.809

High

1421727

AHP2
Histidine-containing phosphotransfer protein 2

2

20

Small-scale

0.809

High

1421706

AHK2
Histidine kinase 2

2

16

Small-scale

0.800

High

1227842

Q67XQ1
Histidine-containing phosphotransfer protein

1

20

Small-scale

0.713

High

1319102

ARR14
Two-component response regulator ARR14

1

12

Small-scale

0.713

High

1421701

AHK3
Histidine kinase 3

1

17

Small-scale

0.713

High

1421728

AHP1
Histidine-containing phosphotransfer protein 1

1

20

Small-scale

0.713

High

1319059

AHP5
Histidine-containing phosphotransfer protein 5

1

20

Small-scale

0.647

High

1421710

HIR2
Hypersensitive-induced response protein 2

1

1

High-throughput

0.552

High

1421712

HIR1
Hypersensitive-induced response protein 1

1

1

High-throughput

0.552

High

584429

2SS3
2S seed storage protein 3

1

0

High-throughput

0.529

High

841519

DRP1A
Phragmoplastin DRP1A

1

0

High-throughput

0.529

High

1409094

PNSL5
Photosynthetic NDH subunit of lumenal location 5, chloroplastic

1

0

High-throughput

0.529

High

1421713

P4KB1
Phosphatidylinositol 4-kinase beta 1

1

0

High-throughput

0.529

High

1421536

NAC81
Protein ATAF2

1

3

High-throughput

0.508

High

1317959

VRN1
B3 domain-containing transcription factor VRN1

1

0

High-throughput

0.486

High

1421707

P4KG5
Phosphatidylinositol 4-kinase gamma 5

1

0

High-throughput

0.486

High

1421715

APBLA
Beta-adaptin-like protein A

1

0

High-throughput

0.486

High

1421717

AGP15
Arabinogalactan protein 15

1

0

High-throughput

0.486

High

1421726

PRS4A
26S proteasome regulatory subunit 4 homolog A

1

0

High-throughput

0.486

High

1220107

Q5XF35
At4g39820

1

1

High-throughput

0.481

High

146194

NAC98
Protein CUP-SHAPED COTYLEDON 2

1

3

High-throughput

0.464

High

1300511

NA102
NAC domain-containing protein 102

1

3

High-throughput

0.464

High

1354919

ENAP1
Trihelix transcription factor ENAP1

1

1

High-throughput

0.464

High

1421721

Q9SHU6
Leucine-rich repeat protein kinase family protein

1

1

High-throughput

0.464

High

75405

B3H7G1
Plant/protein

1

1

High-throughput

0.439

High

102106

F4JF33
SWIB complex BAF60b domain-containing protein

1

1

High-throughput

0.439

High

1421716

Q9LF99
Transcriptional activator

1

1

High-throughput

0.439

High

266096

O65669
Tetratricopeptide repeat

1

1

High-throughput

0.417

High

1319053

Q8L9S7
Transcriptional activator

1

1

High-throughput

0.417

High

1421723

Q9SMN9
Uncharacterized protein T8P19.110

1

1

High-throughput

0.417

High

1421724

Q9SR67
AT3g10020/T22K18_16

1

1

High-throughput

0.417

High

99578

F4HTE0
Translation initiation factor eIF2B subunit alpha

1

0

High-throughput

0.265

Low

103834

F4KG64
Oxidoreductase/transition metal ion-binding protein

1

0

High-throughput

0.265

Low

199267

MORF2
Multiple organellar RNA editing factor 2, chloroplastic

1

0

High-throughput

0.265

Low

835122

SUI11
Protein translation factor SUI1 homolog 1

1

0

High-throughput

0.265

Low

880418

RL91
Large ribosomal subunit protein uL6z/uL6y

1

0

High-throughput

0.265

Low

1168705

PRDA1
Protein PEP-RELATED DEVELOPMENT ARRESTED 1, chloroplastic

1

0

High-throughput

0.265

Low

1318176

SOT15
Cytosolic sulfotransferase 15

1

0

High-throughput

0.265

Low

1355398

ARI8
Probable E3 ubiquitin-protein ligase ARI8

1

0

High-throughput

0.265

Low

1379514

CP74A
Allene oxide synthase, chloroplastic

1

0

High-throughput

0.265

Low

1421708

FH14
Formin-like protein 14

1

0

High-throughput

0.265

Low

1421709

Q9C7V7
At1g64330

1

0

High-throughput

0.265

Low

1421711

MDA3
Mediator-associated protein 3

1

0

High-throughput

0.265

Low

1421714

GRXC3
Glutaredoxin-C3

1

0

High-throughput

0.265

Low

1421718

CX6B1
Cytochrome c oxidase subunit 6b-1

1

0

High-throughput

0.265

Low

1421720

Q9SHG8
At1g17100

1

0

High-throughput

0.265

Low

1421725

Q9SS74
MZB10.16 protein

1

0

High-throughput

0.265

Low

532253

RBS1A
Ribulose bisphosphate carboxylase small subunit 1A, chloroplastic

1

0

High-throughput

0.238

Low

782916

RK121
Large ribosomal subunit protein bL12cz

1

0

High-throughput

0.238

Low

1421722

PSD2A
26S proteasome non-ATPase regulatory subunit 2 homolog A

1

0

High-throughput

0.238

Low


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Last updated: 11Aug2025