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CEP1

Gene
CEP1
Protein
KDEL-tailed cysteine endopeptidase CEP1
Organism
Arabidopsis thaliana
Length
361 amino acids
Function
Possesses protease activity in vitro (PubMed:25035401). Involved in the final stage of developmental programmed cell death and in intercalation of new cells. Cleaves extensins, thus probably supporting the final cell collapse (PubMed:21632425). During the compatible interaction with the biotrophic powdery mildew fungus Erysiphe cruciferarum, involved in the control of late epidermal cell death that limits growth and susceptibility to the parasite (PubMed:24605116). During anther development, involved in tapetal programmed cell death (PCD), leading to degeneration of tapetal cells and functional pollen formation (PubMed:25035401).
Similarity
Belongs to the peptidase C1 family.
Mass
40.708 kDa
Sequence
MKRFIVLALCMLMVLETTKGLDFHNKDVESENSLWELYERWRSHHTVARSLEEKAKRFNVFKHNVKHIHETNKKDKSYKLKLNKFGDMTSEEFRRTYAGSNIKHHRMFQGEKKATKSFMYANVNTLPTSVDWRKNGAVTPVKNQGQCGSCWAFSTVVAVEGINQIRTKKLTSLSEQELVDCDTNQNQGCNGGLMDLAFEFIKEKGGLTSELVYPYKASDETCDTNKENAPVVSIDGHEDVPKNSEDDLMKAVANQPVSVAIDAGGSDFQFYSEGVFTGRCGTELNHGVAVVGYGTTIDGTKYWIVKNSWGEEWGEKGYIRMQRGIRHKEGLCGIAMEASYPLKNSNTNPSRLSLDSLKDEL

Gene
CEP1
Protein
Precursor of CEP1
Organism
Arabidopsis thaliana
Length
91 amino acids
Function
Extracellular signaling peptide that represses, in a dose-dependent manner, primary root growth rate and lateral root elongation by inhibiting both cell division in meristems and cell growth in elongation zones. Prevents also slightly growth of above-ground parts (PubMed:18315543). Regulates systemic nitrogen (N)-demand signaling. Mediates systemic up-regulation of genes involved in N uptake and assimilation pathways (e.g. NRT1.1, NRT2.1 and NRT3.1) (PubMed:25324386).
Similarity
Belongs to the C-terminally encoded plant signaling peptide (CEP) family.
Mass
10.08 kDa
Sequence
MGMSNRSVSTSIFFLALVVLHGIQDTEERHLKTTSLEIEGIYKKTEAEHPSIVVTYTRRGVLQKEVIAHPTDFRPTNPGNSPGVGHSNGRH