kinesin-5, urchin, KRP130, DmKlp61F, KIF11
motor protein - crosslinking and sliding activities during mitosis facilitate accumulation within antiparallel interpolar MTs at the equator, where the motor generates force to drive spindle poleward flux and pole-pole separation
Please see the JBrowse view of Dmel\Klp61F for information on other features
To submit a correction to a gene model please use the Contact FlyBase form
AlphaFold produces a per-residue confidence score (pLDDT) between 0 and 100. Some regions with low pLDDT may be unstructured in isolation.
Gene model reviewed during 5.46
3.7 (longest cDNA)
3.9, 3.7 (northern blot)
There is only one protein coding transcript and one polypeptide associated with this gene
120 (kD observed)
130 (kD observed)
1066 (aa)
Homotetramer (PubMed:24714498, PubMed:8538794, PubMed:9885249). Consists of two pairs of polypeptides associated by coiled-coil interactions to form two homodimers (PubMed:8538794). The homodimers are linked by lateral interactions between their coiled-coil regions to form a bipolar homotetramer consisting of a central rod with two motor domains projecting from either end (PubMed:8538794). Parallel coiled coils extend from each pair of motor heads, switch to two antiparallel coiled coils in the central region and then back to parallel coiled coils (PubMed:24714498). Interacts with Wee1 (PubMed:19800237).
Phosphorylation is required for localization to mitotic spindles (PubMed:9885249). Phosphorylation of Thr-933 during mitosis controls association with the spindle apparatus (By similarity). Phosphorylated in vitro by Wee1 (PubMed:19800237).
Click to get a list of regulatory features (enhancers, TFBS, etc.) and gene disruptions (point mutations, indels, etc.) within or overlapping Dmel\Klp61F using the Feature Mapper tool.
The testis specificity index was calculated from modENCODE tissue expression data by Vedelek et al., 2018 to indicate the degree of testis enrichment compared to other tissues. Scores range from -2.52 (underrepresented) to 5.2 (very high testis bias).
Comment: maternally deposited
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Comment: reported as procephalic ectoderm primordium
Klp61F transcripts were detected throughout the cytoplasm of unfertilized eggs. The maternal RNA persists until cellularization. During gastrulation, Klp61F transcripts are first detected in a wide band of ventral cells corresponding to the invaginating presumptive mesoderm. They are also seen in a more dorsal strip of cells and underneath the pole cells. Later embryos show expression in the head, along the cephalic furrow, along the ventral midline, and within the posterior region. After germ band retraction, expression is limited to the cells of the head and ventral neurogenic region. Regions of expression are well correlated with domains of cell division.
Klp61F transcripts are expressed throughout development. In adults, they are detected only in the gonads.
Throughout mitosis, nonphosphorylated Klp61F protein is diffuse and cytoplasmic. Phosphorylated Klp61F shows a very different distribution. During interphase and prophase, the staining is punctate and concentrated in the nucleus. Occasional faint staining is seen in the centrosome in prophase. By metaphase, the staining localizes to the spindle and appears filamentous. Phospho-Klp61F is particularly concentrated on the half spindles and densely stained bridges between the spindles in the midzone. Lower level staining occurs at the oles and grainy cytoplasmic staining is observed. During anaphase A, the staining resembles metaphase. During anaphase B, nearly all the phospho-Klp61F is present in the spindle between the separating nuclei. Filaments of phospho-Klp61F protein staining cross the midzone while little or no staining is associated with the spindle poles and astral microtubules. During telophase, Klp61F staining is most pronounced on two adjacent patches on the remnants of the central spindle. EM studies suggest that the phospho-Klp61F motors form crosslinks between microtubules within interpolar microt bule bundles.
Klp61F protein localizes to the structural domains of the mitotic spindle throughout mitosis.
JBrowse - Visual display of RNA-Seq signals
View Dmel\Klp61F in JBrowse3-0
3-1.5
Please Note FlyBase no longer curates genomic clone accessions so this list may not be complete
Please Note This section lists cDNAs and ESTs that fall within the genomic extent of the gene model, which may include cDNAs and ESTs of genes within introns, or of overlapping genes. Please see JBrowse for alignment of the cDNAs and ESTs to the gene model.
For each fully sequenced cDNA the DGRC maintains various forms of the cDNA (e.g tagged or untagged) in several different host vectors for subsequent cloning and expression in Drosophila and Drosophila cell lines.
RNAi screen using dsRNA made from templates generated with primers directed against this gene causes defects in spindle shape when assayed in S2 cells. This phenotype can be observed when the screen is performed with or without Cdc27 dsRNA.
dsRNA directed against Klp61F inhibits protein secretion in S2 cells and causes aggregation and swelling of the Golgi membranes in more than 50% of the treated cells.
dsRNA directed against this gene has been used in a screen for genes required for constitutive protein secretion.
RNAi screen using dsRNA made from templates generated with primers directed against this gene causes a phenotype when assayed in DL2 cells: during mitosis, centrosome separation is prevented, resulting in monopolar spindles.
dsRNA made from templates generated with primers directed against this gene tested in RNAi screen for effects on Kc167 and S2R+ cell morphology.
RNAi screen using dsRNA made from templates generated with primers directed against this gene causes a phenotype when assayed in Kc167 and S2R+ cells: cell morphology is aberrant and there is an increased frequency of microtubule-based mitotic spindles, indicative of a failure in mitosis.
Spindle pole movements in embryos are directed by a temporally coordinated balance of forces generated by three mitotic motors; cytoplasmic dynein, Klp61F and ncd. Dynein acts to move the poles apart throughout mitosis, and this activity is augmented by Klp61F after the fenestration of the nuclear envelope, which occurs at the onset of prometaphase. ncd generates forces that pull the poles together between interphase and metaphase, antagonising the activity of both cytoplasmic dynein and Klp61F and serving as a brake for spindle assembly.
Klp61F cycles between spindles during mitosis and fusomes during interphase.
Identification: Enhancer trap expression pattern survey for loci expressed in the ring gland.
Klp61F is involved in the control of cell division.
Klp61F protein, a homotetrameric BimC-related kinesin, consists of four kinesin-related polypeptides assembled into a bipolar aggregate with motor domains at opposite ends. Such a bipolar 'minifilament' could crosslink spindle microtubules and slide them relative to one another.
Antibody staining reveals multiple bimC family members are expressed in Drosophila. Klp61F is an essential gene and biochemical and functional analysis of the protein demonstrates it is not functionally redundant for centrosome separation during neuroblast separation.
Relationship to cloned Klp genes not known. Purified Klp61F behaves as a homotetrameric complex of four subunits that moves toward the plus ends of microtubule tracts at approximately 0.04μm/s.
Encodes a 130kD kinesin related protein that behaves as a homotetramer and moves towards the plus ends of microtubules.
Identified as a 130kD polypeptide in an ATP MAPs 1-24 hour embryonic fraction. A 490kD homotetrameric complex consisting of 4 130kD subunits display a 'slow' plus-end directed motor activity capable of moving single microtubules.
The sequence of the Klp61F protein has been compared with the sequences of a variety of kinesin family proteins.
Klp61F has been cloned, partially sequenced and its expression pattern analysed.
Source for merge of: Klp61F Krp130
"CG32318" is a putative chimeric gene derived from the "Klp61F" and "Psf1" genes (where coding sequences of the two parental genes contribute to the coding sequence of the chimeric gene).