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Primary Information | |
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| BoMiProt ID | Bomi10115 |
| Protein Name | Tubulin alpha-1B chain/Alpha-tubulin ubiquitous/Tubulin K-alpha-1/Tubulin alpha-ubiquitous chain |
| Organism | Bos taurus |
| Uniprot ID | P81947 |
| Milk Fraction | Whey,MFGM |
| Ref Sequence ID | NP_001108328.1 |
| Aminoacid Length | 451 |
| Molecular Weight | 50152 |
| FASTA Sequence | Download |
| Gene ID | 539882 |
| Protein Existence Status | reviewed |
Secondary Information | |
| Protein 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. |
| Biochemical Properties | Dimer of alpha and beta chains. 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. |
| PTMs | Acetylation, Isopeptide bond, Methylation, Nitration, Phosphoprotein, Ubl conjugation |
| Site(s) of PTM(s) N-glycosylation, O-glycosylation, Phosphorylation | >sp|P81947|TBA1B_BOVIN Tubulin alpha-1B chain OS=Bos taurus OX=9913 PE=1 SV=2 MRECISIHVGQAGVQIGNACWELYCLEHGIQPDGQMPSDKTIGGGDDS*48FNTFFSETGAGK HVPRAVFVDLEPTVIDEVRTGTYRQLFHPEQLITGKEDAANNYARGHYTIGKEIIDLVLD RIRKLADQCTGLQGFLVFHSFGGGTGSGFTSLLMERLSVDYGKKSKLEFSIYPAPQVSTA VVEPYNSILTTHTTLEHSDCAFMVDNEAIYDICRRNLDIERPTYTNLNRLIS*232QIVSSITA SLRFDGALNVDLTEFQTNLVPYPRIHFPLATYAPVISAEKAYHEQLSVAEITNACFEPAN QMVKCDPRHGKYMACCLLYRGDVVPKDVNAAIATIKTKRSIQFVDWCPTGFKVGINYQPP TVVPGGDLAKVQRAVCMLSNTTAIAEAWARLDHKFDLMYAKRAFVHWYVGEGMEEGEFSE AREDMAALEKDYEEVGVDS*439VEGEGEEEGEEY |
| SCOP | Class : Alpha and beta proteins (a/b) Fold : Tubulin nucleotide-binding domain-like Superfamily : Tubulin nucleotide-binding domain-like Family : Tubulin, GTPase domain Domain Name : 1JFF A:2-245 Class : Alpha and beta proteins (a+b) Fold : Bacillus chorismate mutase-like Superfamily : Tubulin C-terminal domain-like Family : Tubulin, C-terminal domain Domain Name : 1JFF A:246-439 |
| CATH | Matched CATH superfamily 1.10.287.600 3.30.1330.20 3.40.50.1440 |
| Predicted Disorder Regions | 2 predicted disordered segments; (36-45), (435-451) |
| DisProt Annotation | |
| TM Helix Prediction | No TM helices |
| Significance of PTMs | Tubulin glycylation is required for stability and maintenance of cilia and flagella.Flagella glycylation controls sperm motility.Acetylation of alpha chains at Lys-40 is located inside the microtubule lumen. This modification has been correlated with increased microtubule stability, intracellular transport and ciliary assembly.Methylation of alpha chains at Lys-40 is found in mitotic microtubules and is required for normal mitosis and cytokinesis contributing to genomic stability.Nitration of Tyr-451 is irreversible and interferes with normal dynein intracellular distribution. |
| PDB ID | 3DCO,3EDL,3IZ0,3J1T,3J1U,3J2U,4I4T,4I50,4I55,4IHJ,4IIJ,4O2A,4O2B,4O4H,4O4I,4O4J,4O4L,4TUY,4TV8,4TV9,4UXO,4UXP,4UXR,4UXS,4UXT,4UXY,4UY0,4YJ2,4YJ3,5BMV,5EIB,5GON,5HNW,5HNX,5HNY,5HNZ,5ITZ,5IYZ,5J2T,5J2U,5JH7,5JVD,5LA6,5LOV,5LP6,5LXS,5LXT,5LYJ,5M50,5M54,5M5C,5M7E,5M7G,5M8D,5M8G,5MF4,5MIO,5ND2,5ND3,5ND4,5ND7,5NFZ,5NG1,5NJH,5NM5,5NQT,5NQU,5O7A,5OAM,5OCU,5OGC,5OSK,5OV7,5S4L,5S4M,5S4N,5S4O,5S4P,5S4Q,5S4R,5S4S,5S4T,5S4U,5S4V,5S4W,5S4X,5S4Y,5S4Z,5S50,5S51,5S52,5S53,5S54,5S55,5S56,5S57,5S58,5S59,5S5A,5S5B,, |