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The three typical aspartic proteinase genes of Arabidopsis thaliana are differentially expressed.

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Genomic sequencing has identified three different typical plant aspartic proteinases in the genome of Arabidopsis thaliana, named Pasp-A1, A2 and A3. A1 is identical to a cDNA we had previously isolated and the two others produce proteins 81 and 63% identical to that predicted protein. Sequencing of

Structure and expression of two genes that encode distinct drought-inducible cysteine proteinases in Arabidopsis thaliana.

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Among nine cDNA clones (named RD) corresponding to genes that are responsive to dehydration in Arabidopsis thaliana, two clones, RD19 and RD21, were analyzed further. Northern blot analysis revealed that both the RD19 and RD21 mRNAs were not induced by abscisic acid. Neither RD19 nor RD21 mRNA

Isolation and characterization of two distinct cDNA clones encoding corn seed cysteine proteinases.

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We obtained two cDNA clones encoding corn seed cysteine proteinases (CCP1 and CCP2). Sequence analysis showed that CCP1 consists of 371 amino acid residues, in a prepro-protein form, with two unique short insertions in the mature protein region that are not found in papain or other common CPs. CCP2

Interaction in vitro between the proteinase of Tomato ringspot virus (genus Nepovirus) and the eukaryotic translation initiation factor iso4E from Arabidopsis thaliana.

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Eukaryotic initiation factor eIF(iso)4E binds to the cap structure of mRNAs leading to assembly of the translation complex. This factor also interacts with the potyvirus VPg and this interaction has been correlated with virus infectivity. In this study, we show an interaction between eIF(iso)4E and

Modification of luciferase to be a substrate for plant aspartic proteinase.

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The possibility of using firefly luciferase as a substrate for an aspartic proteinase was explored. Several amino acid modifications to the C-terminus of the luciferase were created on the basis of the known substrate of the Arabidopsis thaliana aspartic proteinase, pro-(barley lectin). One

Construction, expression and characterization of a chimaeric mammalian-plant aspartic proteinase.

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Aspartic proteinases are a well-characterized class of proteinases. In plants, all nascent aspartic proteinases possess a 100-amino-acid, plant-specific sequence (PSS) within their C-terminal lobe, presumed to possess a targeting role in vivo. In this study, the PSS domain from the Arabidopsis

ECEPE proteins: a novel family of eukaryotic cysteine proteinases.

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Using a variety of fold-recognition methods, a novel eukaryotic cysteine proteinase (ECEPE) family has been identified. This family encompasses sequences from an uncharacterized KOG4621, including the Arabidopsis thaliana guanylyl cyclase-related protein AtGC1. ECEPE proteins are predicted to

Functional properties of a cysteine proteinase from pineapple fruit with improved resistance to fungal pathogens in Arabidopsis thaliana.

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In plant cells, many cysteine proteinases (CPs) are synthesized as precursors in the endoplasmic reticulum, and then are subject to post-translational modifications to form the active mature proteinases. They participate in various cellular and physiological functions. Here, AcCP2, a CP from

Aspartic proteinase genes in the Brassicaceae Arabidopsis thaliana and Brassica napus.

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Active aspartic proteinase is isolated from Brassica napus seeds and the peptide sequence is used to generate primers for PCR. We present here cDNA and genomic clones for aspartic proteinases from the closely related Brassicaceae Arabidopsis thaliana and Brassica napus. The Arabidopsis cDNA

Characterization of a novel Kazal-type serine proteinase inhibitor of Arabidopsis thaliana.

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Many different types of serine proteinase inhibitors have been involved in several kinds of plant physiological processes, including defense mechanisms against phytopathogens. Kazal-type serine proteinase inhibitors, which are included in the serine proteinase inhibitor family, are present in

Structure-function characterization of the recombinant aspartic proteinase A1 from Arabidopsis thaliana.

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Aspartic proteinases (APs) are involved in several physiological processes in plants, including protein processing, senescence, and stress response and share many structural and functional features with mammalian and microbial APs. The heterodimeric aspartic proteinase A1 from Arabidopsis thaliana

Expression and characterization of the recombinant aspartic proteinase A1 from Arabidopsis thaliana.

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The present study reports the recombinant expression, purification, and partial characterization of a typical aspartic proteinase from Arabidopsis thaliana (AtAP A1). The cDNA encoding the precursor of AtAP A1 was expressed as a functional protein using the yeast Pichia pastoris. The mature form of

A novel proteinase, SNOWY COTYLEDON4, is required for photosynthetic acclimation to higher light intensities in Arabidopsis.

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Excess light can have a negative impact on photosynthesis; thus, plants have evolved many different ways to adapt to different light conditions to both optimize energy use and avoid damage caused by excess light. Analysis of the Arabidopsis (Arabidopsis thaliana) mutant snowy cotyledon4 (sco4)

An aspartic proteinase present in seeds cleaves Arabidopsis 2 S albumin precursors in vitro.

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The Arabidopsis thaliana 2 S albumins are examples of vacuolar proteins which undergo intensive posttranslational processing. An in vitro processing assay to screen for processing enzymes present in seeds was developed using an in vitro synthesized 2 S albumin precursor as the substrate. A protease

Ethylene-regulated expression of a carnation cysteine proteinase during flower petal senescence.

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The senescence of carnation (Dianthus caryophyllus L.) flower petals is regulated by the phytohormone ethylene and is associated with considerable catabolic activity including the loss of protein. In this paper we present the molecular cloning of a cysteine proteinase and show that its expression is

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