Proteins
Curated comments from UniProt
Type | Comment | Proteins |
---|---|---|
BRX_ARATH | developmental stage | Ubiquitously expressed in early embryos and becomes restricted to the vasculature in the mature embryo and at later stages of development (PubMed:19465596). Expressed in roots developing protophloem, up to the end of the transition zone, as well as in the root tip meristem (PubMed:23569225). |
BRX_ARATH | function | Acts as a regulator of cell proliferation and elongation in the root and shoot (PubMed:25049386, PubMed:28652362). Regulates roots architecture and primary root protophloem differentiation (PubMed:25049386, PubMed:28652362). BRX, BAM3, and CLE45 act together to regulate the transition of protophloem cells from proliferation to differentiation, thus impinging on postembryonic growth capacity of the root meristem (PubMed:23569225). Probable transcription regulator. Regulated by the auxin response factor ARF5. Polarly localized in vascular cells and subject to endocytic recycling. Required for CPD expression and for correct nuclear auxin response. Mediates cross-talk between the auxin and brassinosteroid pathways. BRX is a target for auxin-induced, proteasome-mediated degradation. |
A0A1P8AWZ2_ARATH BRX_ARATH | similarity | Belongs to the BRX family. |
BRX_ARATH | subcellular location | The translocation to the nucleus depends on the auxin concentration. Polar localization at the plasma membrane, rootward oriented, in developing root protophloem cells (PubMed:28652362). |
BRX_ARATH | tissue specificity | Expressed in the developing protophloem up to the elongation zone in root meristem of young seedlings, in the columella and the phloem vasculature throughout the root and in the phloem vasculature in the shoot (PubMed:23569225). Detected in the shoot meristem and in primordia. Low expression in stomata. Confined to sieve element precursor cells and to protophloem (PubMed:25049386). |
Function
Gene Ontology
cellular component | |
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plasma membrane
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ECO |
nucleus
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ECO |
molecular function | |
identical protein binding
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ECO |
biological process | |
cell differentiation
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ECO |
root development
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ECO |
response to abscisic acid
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ECO |
regulation of root development
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ECO |
auxin export across the plasma membrane
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ECO |
maintenance of root meristem identity
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ECO |
sieve cell differentiation
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ECO |
lateral root development
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ECO |
auxin-activated signaling pathway
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ECO |
cytokinin-activated signaling pathway
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ECO |
phloem development
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ECO |
Interactions
Interaction Network
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