NCBI Accession #
NP_193606.1
NCBI GenBank Nucleotide #
NM_117987.4
NCBI Official Full Name
Protein kinase superfamily protein
NCBI Official Symbol
BIN2
NCBI Official Synonym Symbols
ATSK21; BRASSINOSTEROID-INSENSITIVE 2; DWARF 12; DWF12; F28A21.120; F28A21_120; SHAGGY-LIKE KINASE 21; SK21; UCU1; ULTRACURVATA 1
NCBI Protein Information
Protein kinase superfamily protein
NCBI Summary
Encodes BIN2, a member of the ATSK (shaggy-like kinase) family. BIN2 functions in the cross-talk between auxin and brassinosteroid signaling pathways. BIN2 regulates root epidermal cell fate specification by phosphorylating EGL3 and TTG1. BIN2-mediated phosphorylation appears to promote BZR1 export from the nucleus.
UniProt Synonym Gene Names
AtSK21
UniProt Protein Name
Shaggy-related protein kinase eta
UniProt Synonym Protein Names
ASK-eta
UniProt Primary Accession #
Q39011
UniProt Secondary Accession #
Q147R2; Q8S9H8; Q9SN42
UniProt Related Accession #
Q39011
UniProt Comments
Negative regulator in brassinosteroid signal transduction pathway important for plant growth. May be also involved in auxin signaling pathway. Phosphorylates and increases the degradation of BZR1 and BZR2/BES1 by the proteasome. Phosphorylates BHLH150, beet curly top virus C4 and tomato golden mosaic virus AC4 on threonine and serine residues. Upon brassinosteroid signaling, inhibits stomatal development by phosphorylating and inhibiting the MAPKK kinase YDA and the MAPK kinases MKK4 and MKK5 (PubMed:11847343, PubMed:12114546, PubMed:12427989, PubMed:17280695, PubMed:22307275, PubMed:23341468). Phosphorylates BSK1, BSK3, BSK5, BSK6, BSK8 AND BSK11 in vitro (PubMed:23496207).