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. 2020 Jul 11;21(14):4898. doi: 10.3390/ijms21144898

Figure 2.

Figure 2

Representative domain structures of Arabidopsis two-component signaling elements. (A) Domain structures of HKs. (B) Domain structures of Hpts. (C) Domain structures of RRs. (D) Domain structures of CRFs. TM, transmembrane; CHASE, cyclases/histidine kinases associated sensing extracellular; HK, histidine kinase; HATPase, histidine adenosine triphosphatase; Rec, receiver; GAF, cGMP-regulated phosphodiesterases and adenylate cyclases of Anabaena and the bacterial transcription factor FhlA; HKL, histidine kinase like; PHY, phytochrome; PAS, Per/Arndt/Sim; HPt, histidine-containing phosphotransfer; pHPt, pseudo histidine-containing phosphotransfer; RD, receiver domain; PRec, pseudo receiver; CCT, Co, Col and Toc1; CRF, cytokinin response factor; AP2, APETALA 2.