Summary for Tbx5 (NES ID: 127)

Full Name
T-box transcription factor TBX5     UniProt    
Alternative Names
T-box protein 5   
Organism
Gallus gallus (Chicken)    
Experimental Evidence for CRM1-mediated Export
Mutations That Affect Nuclear Export
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
Undetermined
Secondary Structure of Export Signal
Unknown (the 3D structure listed below is for Tbx3 and the secondary structure of the NES region was not determined)
Other Residues Important for Export
Unknown
Sequence
Show FASTA Format Show Domain Info by CDD Show Secondary Structure by PSIPRED Show Conservation Score by AL2CO
10 20 30 40 50 60
MADTEEGFGL PSTPVDSEAK ELQAEAKQDP QLGTTSKAPT SPQAAFTQQG MEGIKVFLHE
70 80 90 100 110 120
RELWLKFHEV GTEMIITKAG RRMFPSYKVK VTGLNPKTKY ILLMDIVPAD DHRYKFADNK
130 140 150 160 170 180
WSVTGKAEPA MPGRLYVHPD SPATGAHWMR QLVSFQKLKL TNNHLDPFGH IILNSMHKYQ
190 200 210 220 230 240
PRLHIVKADE NNGFGSKNTA FCTHVFPETA FIAVTSYQNH KITQLKIENN PFAKGFRGSD
250 260 270 280 290 300
DMELHRMSRM QSKEYPVVPR STVRQKVSSN HSPFSGETRV LSTSSNLGSQ YQCENGVSST
310 320 330 340 350 360
SQDLLPPTNP YPISQEHSQI YHCTKRKDEE CSTTEHPYKK PYMETSPAEE DPFYRSSYPQ
370 380 390 400 410 420
QQGLNTSYRT ESAQRQACMY ASSAPPTDPV PSLEDISCNT WPSVPSYSSC TVSAMQPMDR
430 440 450 460 470 480
LPYQHFSAHF TSGPLMPRLS SVANHTSPQI GDTHSMFQHQ TSVSHQPIVR QCGPQTGIQS
490 500 510 520
PPSSLQPAEF LYSHGVPRTL SPHQYHSVHG VGMVPEWSEN S
3D Structures in PDB
2X6U (X-Ray,1.90 Å resolution)
Comments
Tbx5 protein is a transcription factor, which regulates the genes responsible for heart and limb development. Tbx5 has two NLSs and one NES. Both NLSs are required for efficient nuclear localization. During heart and limb development, Tbx5 is dynamically expressed in nuclear and/or cytoplasmic compartments. The interaction and association of Tbx5 with LMP4 can lead to Tbx5 localization along the actin cytoskeleton. Tbx5 can be co-immunoprecipitated with CRM1. The proposed NES region is conserved among all T-box family of proteins. Single mutation of the hydrophobic residues doesn't affect interactions with CRM1, but can prevent cytoplasmic localization in the presence of LMP4. LMP4 is exclusively cytoplasmic.
References
[1]. "An evolutionarily conserved nuclear export signal facilitates cytoplasmic localization of the Tbx5 transcription factor."
Kulisz A, Simon HG (2008) Mol Cell Biol, 28:1553-64 PubMed
User Input
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