Summary for XAB1/Gpn1 (NES ID: 240)

Full Name
GPN-loop GTPase 1     UniProt    
Alternative Names
MBD2-interacting protein (MBDin)
XPA-binding protein 1   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive Ref.1A nuclear export sequence in GPN-loop GTPase 1, an essential protein for nuclear targeting of RNA polymerase II, is necessary and sufficient for nuclear export, ReyesPardo et al., Biochim Biophys Acta, 2012
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
V302A/L304A Ref.1A nuclear export sequence in GPN-loop GTPase 1, an essential protein for nuclear targeting of RNA polymerase II, is necessary and sufficient for nuclear export, ReyesPardo et al., Biochim Biophys Acta, 2012
Mutations That Affect CRM1 Binding
Unknown
Functional Export Signals
*shown as underlined residues in the full sequence
290EQLERLRKDMGSVAL304 Ref.1A nuclear export sequence in GPN-loop GTPase 1, an essential protein for nuclear targeting of RNA polymerase II, is necessary and sufficient for nuclear export, ReyesPardo et al., Biochim Biophys Acta, 2012
Secondary Structure of Export Signal
Unknown
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 
MAASAAAAEL QASGGPRHPV CLLVLGMAGS GKTTFVQRLT GHLHAQGTPP YVINLDPAVH 

        70         80         90        100        110        120 
EVPFPANIDI RDTVKYKEVM KQYGLGPNGG IVTSLNLFAT RFDQVMKFIE KAQNMSKYVL 

       130        140        150        160        170        180 
IDTPGQIEVF TWSASGTIIT EALASSFPTV VIYVMDTSRS TNPVTFMSNM LYACSILYKT 

       190        200        210        220        230        240 
KLPFIVVMNK TDIIDHSFAV EWMQDFEAFQ DALNQETTYV SNLTRSMSLV LDEFYSSLRV 

       250        260        270        280        290        300 
VGVSAVLGTG LDELFVQVTS AAEEYEREYR PEYERLKKSL ANAESQQQRE QLERLRKDMG 

       310        320        330        340        350        360 
SVALDAGTAK DSLSPVLHPS DLILTRGTLD EEDEEADSDT DDIDHRVTEE SHEEPAFQNF 

       370                                                        
MQESMAQYWK RNNK
3D Structures in PDB
Not Available
Comments
XAB1/Gpn1 is a GTPase with a glyicine-proline-asparagine structural loop. XAB1/Gpn1 interacts with RNA polymerase II (RNAPII) and is required for the nuclear accumulation of RNAPII. XAB1/Gpn1 is a nucleocytoplasmic shuttling protein. Out of the six putative NESs, only one is surface-exposed as shown by modeling and this is the only one functional.
References
[1]. "A nuclear export sequence in GPN-loop GTPase 1, an essential protein for nuclear targeting of RNA polymerase II, is necessary and sufficient for nuclear export"
Reyes-Pardo H, Barbosa-Camacho AA, Pérez-Mejía AE, Lara-Chacón B, Salas-Estrada LA, Robledo-Rivera AY, Montero-Morán GM, Lara-González S, Calera MR, Sánchez-Olea R. (2012) Biochim Biophys Acta, 1823:1756-1766 PubMed
User Input
Accurate identification of NESs is difficult because many sequences in the genome match the NES consensus. Therefore, some published NESs may be mistakenly identified. Please help us improve the accuracy of NESdb by providing either a positive or negative flag for the NES in this entry. Supporting comments are required to process the flag.

Supporting comments *

Flag this NES *

Positive
Negative

E-mail: