Protein: Homeobox-leucine zipper protein PROTODERMAL FACTOR 2 (HD-ZIP protein PDF2) (Homeodomain transcription factor PDF2) (Q93V99)
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Probable transcription factor that binds to the L1 box DNA sequence 5'-TAAATG[CT]A-3'. Plays a role in maintaining the identity of L1 cells, possibly by interacting with their L1 box or other target-gene promoters; binds to the LIP1 gene promoter and stimulates its expression upon imbibition. Acts as a positive regulator of gibberellins (GAs)-regulated epidermal gene expression (e.g. LIP1, LIP2, LTP1, FDH and PDF1). Functionally redundant to ATML1. Involved, together with HDG proteins (e.g. HDG1, HDG2, HDG5 and HDG12), in the regulation of flower organs development by promoting the expression of APETALA 3 (AP3) in the epidermis and internal cell layers of developing flowers. Seems to promote cell differentiation.
Subcellular location: Nucleus {ECO:0000305}.
Sequence: MYHPNMFESHHMFDMTPKSTSDNDLGITGSREDDFETKSGTEVTTENPSGEELQDPSQRPNKKKRYHRHTQRQIQELESFFKECPHPDDKQRKELSRDLNLEPLQVKFWFQNKRTQMKAQSERHENQILKSDNDKLRAENNRYKEALSNATCPNCGGPAAIGEMSFDEQHLRIENARLREEIDRISAIAAKYVGKPLGSSFAPLAIHAPSRSLDLEVGNFGNQTGFVGEMYGTGDILRSVSIPSETDKPIIVELAVAAMEELVRMAQTGDPLWLSTDNSVEILNEEEYFRTFPRGIGPKPLGLRSEASRQSAVVIMNHINLVEILMDVNQWSCVFSGIVSRALTLEVLSTGVAGNYNGALQVMTAEFQVPSPLVPTRENYFVRYCKQHSDGSWAVVDVSLDSLRPSTPILRTRRRPSGCLIQELPNGYSKVTWIEHMEVDDRSVHNMYKPLVQSGLAFGAKRWVATLERQCERLASSMASNIPGDLSVITSPEGRKSMLKLAERMVMSFCSGVGASTAHAWTTMSTTGSDDVRVMTRKSMDDPGRPPGIVLSAATSFWIPVAPKRVFDFLRDENSRKEWDILSNGGMVQEMAHIANGHEPGNCVSLLRVNSGNSSQSNMLILQESCTDASGSYVIYAPVDIVAMNVVLSGGDPDYVALLPSGFAILPDGSVGGGDGNQHQEMVSTTSSGSCGGSLLTVAFQILVDSVPTAKLSLGSVATVNSLIKCTVERIKAAVSCDVGGGA
InterPro domains: - IPR057993: HD-Zip IV, C-terminal domain (domain) [491-737]
- IPR001356: Homeodomain (domain) [60-124]
- IPR023393: START-like domain superfamily (homologous_superfamily) [321-474]
- IPR002913: START domain (domain) [244-476]
- IPR042160: Class IV homeodomain-leucine zipper (family) [61-735]
- IPR009057: Homedomain-like superfamily (homologous_superfamily) [49-120]
- IPR017970: Homeobox, conserved site (conserved_site) [95-118]
Interaction partners: - At4g14500
- Polyketide cyclase/dehydrase and lipid transport superfamily protein
- At3g13062
- Serine/threonine-protein kinase-like protein ACR4
- Homeobox-leucine zipper protein MERISTEM L1
- Protodermal factor 1
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0097159 (organic cyclic compound binding), GO:1901363 (heterocyclic compound binding), GO:0005515 (protein binding), GO:0003676 (nucleic acid binding), GO:0003677 (DNA binding), GO:0043565 (sequence-specific DNA binding)
Biological Process (BP): GO:0008150 (biological process), GO:0032502 (developmental process), GO:0009987 (cellular process), GO:0048869 (cellular developmental process), GO:0048856 (anatomical structure development), GO:0071840 (cellular component organization or biogenesis), GO:0009653 (anatomical structure morphogenesis), GO:0071554 (cell wall organization or biogenesis), GO:0000902 (cell morphogenesis), GO:0016043 (cellular component organization), GO:0071669 (plant-type cell wall organization or biogenesis), GO:0071555 (cell wall organization), GO:0090626 (plant epidermis morphogenesis), GO:0009888 (tissue development), GO:0048468 (cell development), GO:0030154 (cell differentiation), GO:0090558 (plant epidermis development), GO:0010090 (trichome morphogenesis), GO:0010026 (trichome differentiation), GO:0042545 (cell wall modification), GO:0000904 (cell morphogenesis involved in differentiation), GO:0045229 (external encapsulating structure organization), GO:0009664 (plant-type cell wall organization), GO:0010091 (trichome branching), GO:0009827 (plant-type cell wall modification)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0043229 (intracellular organelle), GO:0043227 (membrane-bounded organelle), GO:0043231 (intracellular membrane-bounded organelle), GO:0005634 (nucleus)