This entry represents a presumed domain found towards the C-terminal of plant proteins, such as PMI1 (PLASTID MOVEMENT IMPAIRED 1 and PMIR1/2 (PMI1 related 1 and 2) from Arabidopsis. PMI1 and PMIR1 are required for efficient chloroplast photorelocation movement, while PMIR2 seems not necessary for this [1]. PMI1 is a mobile signal that initiates coordinated changes in protein-protein and protein-plasma membrane interactions for chloroplast movement in response to light, which determines where in the cell chloroplasts are able to anchor o the plasma membrane [3]. PMI1 has been found to mediate ABA sensitivity during germination [2].

1: PLASTID MOVEMENT IMPAIRED1 and PLASTID MOVEMENT IMPAIRED1-RELATED1 Mediate Photorelocation Movements of Both Chloroplasts and Nuclei. Suetsugu N, Higa T, Kong SG, Wada M; Plant Physiol. 2015;169:1155-1167. PMID:26324877

2: PLASTID MOVEMENT IMPAIRED1 mediates ABA sensitivity during germination and implicates ABA in light-mediated Chloroplast movements. Rojas-Pierce M, Whippo CW, Davis PA, Hangarter RP, Springer PS; Plant Physiol Biochem. 2014;83:185-193. PMID:25154696

3: Light-induced displacement of PLASTID MOVEMENT IMPAIRED1 precedes light-dependent chloroplast movements. Dwyer ME, Hangarter RP; Plant Physiol. 2022;189:1866-1880. PMID:35477788