Summary for CALM (NES ID: 272)

Full Name
Clathrin assembly lymphoid myeloid leukemia protein     UniProt    
Alternative Names
Phosphatidylinositol-binding clathrin assembly protein (PICALM)   
Organism
Homo sapiens (Human)    
Experimental Evidence for CRM1-mediated Export
LMB Sensitive,  Binds CRM1 Ref.1A CALM-derived nuclear export signal is essential for CALM-AF10-mediated leukemogenesis, Conway et al., Blood, 2013 Ref.3A critical role for CRM1 in regulating HOXA gene transcription in CALM-AF10 leukemias, Conway et al., Leukemia, 2015 Ref.4Nucleocytoplasmic Shuttling of Endocytic Proteins, Vecchi et al., J Cell Biol, 2001
Mutations That Affect Nuclear Export
*highlighted yellow in the full sequence
L544A/L547A, L551A/I553A, L544A/L547A/L551A/I553A Ref.1A CALM-derived nuclear export signal is essential for CALM-AF10-mediated leukemogenesis, Conway et al., Blood, 2013 Ref.2Nuclear export signal within CALM is necessary for CALM-AF10-induced leukemia, Suzuki et al., Cancer Sci, 2014
Mutations That Affect CRM1 Binding
*shown as red residues in the full sequence
L544A/L547A/L551A/I553A Ref.3A critical role for CRM1 in regulating HOXA gene transcription in CALM-AF10 leukemias, Conway et al., Leukemia, 2015
Functional Export Signals
*shown as underlined residues in the full sequence
540LDSSLANLVGNLGIGNGT557 Ref.1A CALM-derived nuclear export signal is essential for CALM-AF10-mediated leukemogenesis, Conway et al., Blood, 2013
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 
MSGQSLTDRI TAAQHSVTGS AVSKTVCKAT THEIMGPKKK HLDYLIQCTN EMNVNIPQLA 

        70         80         90        100        110        120 
DSLFERTTNS SWVVVFKSLI TTHHLMVYGN ERFIQYLASR NTLFNLSNFL DKSGLQGYDM 

       130        140        150        160        170        180 
STFIRRYSRY LNEKAVSYRQ VAFDFTKVKR GADGVMRTMN TEKLLKTVPI IQNQMDALLD 

       190        200        210        220        230        240 
FNVNSNELTN GVINAAFMLL FKDAIRLFAA YNEGIINLLE KYFDMKKNQC KEGLDIYKKF 

       250        260        270        280        290        300 
LTRMTRISEF LKVAEQVGID RGDIPDLSQA PSSLLDALEQ HLASLEGKKI KDSTAASRAT 

       310        320        330        340        350        360 
TLSNAVSSLA STGLSLTKVD EREKQAALEE EQARLKALKE QRLKELAKKP HTSLTTAASP 

       370        380        390        400        410        420 
VSTSAGGIMT APAIDIFSTP SSSNSTSKLP NDLLDLQQPT FHPSVHPMST ASQVASTWGD 

       430        440        450        460        470        480 
PFSATVDAVD DAIPSLNPFL TKSSGDVHLS ISSDVSTFTT RTPTHEMFVG FTPSPVAQPH 

       490        500        510        520        530        540 
PSAGLNVDFE SVFGNKSTNV IVDSGGFDEL GGLLKPTVAS QNQNLPVAKL PPSKLVSDDL 

       550        560        570        580        590        600 
DSSLANLVGN LGIGNGTTKN DVNWSQPGEK KLTGGSNWQP KVAPTTAWNA ATMAPPVMAY 

       610        620        630        640        650            
PATTPTGMIG YGIPPQMGSV PVMTQPTLIY SQPVMRPPNP FGPVSGAQIQ FM
3D Structures in PDB
Not Available
Comments
CALM is a cytoplasmic adapter protein that plays a critical role in clathrin-mediated endocytosis. A t(10;11)(p13;q14) translocation gives rise to the CALM-AF10 fusion gene which contains almost all of CALM fused to the octapeptide/leucine zipper domain of AF10 and is the cause of hematopoietic malignancies. CALM is predominantly cytoplasmic and is shown to shuttle across the nucleus and cytoplasm in a LMB-sensitive manner. A functional NES is discovered in CALM residues 544-553 which is found to be necessary for nuclear export and CALM-AF10–mediated immortalization. This sequence matches traditional NES consensus. Conway et al. also showed that CRM1 directly recruits CALM-AF10 to the Hoxa loci using the NES to regulate HOXA cluster gene expression.
References
[1]. "A CALM-derived nuclear export signal is essential for CALM-AF10-mediated leukemogenesis"
Conway AE, Scotland PB, Lavau CP, Wechsler DS. (2013) Blood, 121(23):4758-4768 PubMed
[2]. "Nuclear export signal within CALM is necessary for CALM-AF10-induced leukemia"
Suzuki M, Yamagata K, Shino M, Aikawa Y, Akashi K, Watanabe T, Kitabayashi I. (2014) Cancer Sci, 105(3):315-323 PubMed
[3]. "A critical role for CRM1 in regulating HOXA gene transcription in CALM-AF10 leukemias"
Conway AE, Haldeman JM, Wechsler DS, Lavau CP. (2015) Leukemia, 29(2):423-432 PubMed
[4]. "Nucleocytoplasmic Shuttling of Endocytic Proteins"
Vecchi M, Polo S, Poupon V, van de Loo JW, Benmerah A, Di Fiore PP. (2001) J Cell Biol, 153(7):1511-7 PubMed
User Input
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