NCBI Accession #
NP_196700.2
NCBI GenBank Nucleotide #
NM_121177.4
NCBI Official Full Name
WPP domain-interacting protein 1
NCBI Official Symbol
WIT1
NCBI Official Synonym Symbols
F2I11.280; F2I11_280; WPP domain-interacting protein 1
NCBI Protein Information
WPP domain-interacting protein 1
NCBI Summary
Encodes one of the WPP domain-interacting proteins (WIT1/AT5G11390, WIT2/AT1G68910) required for RanGAP nuclear envelope association in root tip cells. Ran GTPase plays essential roles in multiple cellular processes, including nucleocytoplasmic transport, spindle formation, and postmitotic nuclear envelope reassembly. The cytoplasmic Ran GTPase activating protein RanGAP is critical to establish a functional RanGTP/RanGDP gradient across the nuclear envelope and is associated with the outer surface of the nuclear envelope in metazoan and higher plant cells. Arabidopsis thaliana RanGAP association with the root tip nuclear envelope requires a family of likely plant-specific nucleoporins combining coiled-coil and transmembrane domains (CC-TMD) and WPP domain-interacting proteins (WIPs). WIT1 and WIT2 have been identified as a second family of CC-TMD proteins, structurally similar, yet clearly distinct from the WIP family, that is required for RanGAP nuclear envelop association in root tip cells.
UniProt Protein Name
WPP domain-interacting tail-anchored protein 1
UniProt Primary Accession #
Q8L7E5
UniProt Secondary Accession #
Q9LFL8
UniProt Related Accession #
Q8L7E5
UniProt Comments
Together with WIT2, required for the nuclear envelope docking of RANGAP proteins in root tips.