Protein Ubiquitination and Sumoylation in ABA Signaling - Abscisic Acid: Metabolism, Transport and Signaling - page 181

XERICO

SAUL1

ABA

AAO3

Biosynthesis

DDA1
CRL4/DDB1

ABA

(Receptor PYL8)

BTB
CRL3/MATH

ABA signaling

ATHB6

SDIR1

CIPK26 ABI3

AIP2

ABF3

ABF1

KEG

ABI5 SIZ1

ABD1
CRL4/DDB1

ABA response

DWA1/2
CRL4/DDB1

MYB30

AtAIRP1/2

AtPUB9

RD21 AtAIRP3

AtPUB19

RHA2a/b

AtPUB18

ATL43

MMS21

PP2A AtCHIP

EDL3
CRL1/ASK1/2

DOR
CRL1/ASK14

Fig. 9.2 Ubiquitin and SUMO E3 ligases (complexes) and their substrates participate in ABA
pathway. Green color refers to substrates. Orange color highlights RING-type E3 ligase. Purple
color indicates U-box-type E3 ligase. Cullin-based E3 ligases are in light brown color. SUMO E3
ligases are in blue color

evidences analyzed in this chapter, it is believed that protein ubiquitination and
sumoylation play vital roles in ABA signaling.