Immunogen:

Full-length beta-tubulin protein of human.

Uniprot:

>>Visit The Human Protein Atlas

Gene id:

Molecular Weight:

Observed Mol.Wt.: 55KD.
Predicted Mol.Wt.: 50kDa.

Subcellular Location:

Cytoplasm > cytoskeleton.

Tissue Specificity:

Ubiquitously expressed with highest levels in spleen, thymus and immature brain.

Description:

Microtubules are constituent parts of the mitotic apparatus, cilia, flagella, and elements of the cytoskeleton. They consist principally of 2 soluble proteins, alpha- and beta-tubulin, each of about 55,000 kDa. Antibodies against beta Tubulin are useful as loading controls for Western Blotting. However it should be noted that levels of beta-Tubulin may not be stable in certain cells. For example, expression of beta-Tubulin in adipose tissue is very low and therefore beta-Tubulin should not be used as loading control for these tissues.

Sequence:

• Protein BLAST With
• 
• 
• 

        10         20         30         40         50
MREIVHIQAG QCGNQIGAKF WEVISDEHGI DPTGTYHGDS DLQLDRISVY 
        60         70         80         90        100
YNEATGGKYV PRAILVDLEP GTMDSVRSGP FGQIFRPDNF VFGQSGAGNN 
       110        120        130        140        150
WAKGHYTEGA ELVDSVLDVV RKEAESCDCL QGFQLTHSLG GGTGSGMGTL 
       160        170        180        190        200
LISKIREEYP DRIMNTFSVV PSPKVSDTVV EPYNATLSVH QLVENTDETY 
       210        220        230        240        250
CIDNEALYDI CFRTLKLTTP TYGDLNHLVS ATMSGVTTCL RFPGQLNADL 
       260        270        280        290        300
RKLAVNMVPF PRLHFFMPGF APLTSRGSQQ YRALTVPELT QQVFDAKNMM 
       310        320        330        340        350
AACDPRHGRY LTVAAVFRGR MSMKEVDEQM LNVQNKNSSY FVEWIPNNVK 
       360        370        380        390        400
TAVCDIPPRG LKMAVTFIGN STAIQELFKR ISEQFTAMFR RKAFLHWYTG 
       410        420        430        440 
EGMDEMEFTE AESNMNDLVS EYQQYQDATA EEEEDFGEEA EEEA       

Function:

Tubulin is the major constituent of microtubules. It binds two moles of GTP, one at an exchangeable site on the beta chain and one at a non-exchangeable site on the alpha chain.

Post-translational Modifications:

Some glutamate residues at the C-terminus are polyglutamylated, resulting in polyglutamate chains on the gamma-carboxyl group (PubMed:26875866). Polyglutamylation plays a key role in microtubule severing by spastin (SPAST). SPAST preferentially recognizes and acts on microtubules decorated with short polyglutamate tails: severing activity by SPAST increases as the number of glutamates per tubulin rises from one to eight, but decreases beyond this glutamylation threshold (PubMed:26875866).Some glutamate residues at the C-terminus are monoglycylated but not polyglycylated due to the absence of functional TTLL10 in human. Monoglycylation is mainly limited to tubulin incorporated into axonemes (cilia and flagella). Both polyglutamylation and monoglycylation can coexist on the same protein on adjacent residues, and lowering glycylation levels increases polyglutamylation, and reciprocally. The precise function of monoglycylation is still unclear (Probable).Phosphorylated on Ser-172 by CDK1 during the cell cycle, from metaphase to telophase, but not in interphase. This phosphorylation inhibits tubulin incorporation into microtubules.

Subcellular Location:

Cytoskeleton;

Subunit Structure:

Heterodimer of alpha and beta chains (PubMed:26637975). A typical microtubule is a hollow water-filled tube with an outer diameter of 25 nm and an inner diameter of 15 nM. Alpha-beta heterodimers associate head-to-tail to form protofilaments running lengthwise along the microtubule wall with the beta-tubulin subunit facing the microtubule plus end conferring a structural polarity. Microtubules usually have 13 protofilaments but different protofilament numbers can be found in some organisms and specialized cells. Interacts with PIFO (PubMed:20643351). Interacts with DIAPH1 (PubMed:23325789). Interacts with MX1 (By similarity). May interact with RNABP10 (By similarity). Interacts with CFAP157 (By similarity).

Similarity:

The highly acidic C-terminal region may bind cations such as calcium.Belongs to the tubulin family.

Research Fields:

· Cellular Processes > Transport and catabolism > Phagosome.(View pathway)
· Cellular Processes > Cellular community - eukaryotes > Gap junction.(View pathway)
· Human Diseases > Infectious diseases: Bacterial > Pathogenic Escherichia coli infection.

 IHC Protocol.

 IF/ICC Protocol.

 Sample Preparation For Western Blotting.

 Western Blotting Handbook.