Summary: Inner centromere protein, ARK binding region
Pfam includes annotations and additional family information from a range of different sources. These sources can be accessed via the tabs below.
This is the Wikipedia entry entitled "INCENP". More...
The Wikipedia text that you see displayed here is a download from Wikipedia. This means that the information we display is a copy of the information from the Wikipedia database. The button next to the article title ("Edit Wikipedia article") takes you to the edit page for the article directly within Wikipedia. You should be aware you are not editing our local copy of this information. Any changes that you make to the Wikipedia article will not be displayed here until we next download the article from Wikipedia. We currently download new content on a nightly basis.
Does Pfam agree with the content of the Wikipedia entry ?
Pfam has chosen to link families to Wikipedia articles. In some case we have created or edited these articles but in many other cases we have not made any direct contribution to the content of the article. The Wikipedia community does monitor edits to try to ensure that (a) the quality of article annotation increases, and (b) vandalism is very quickly dealt with. However, we would like to emphasise that Pfam does not curate the Wikipedia entries and we cannot guarantee the accuracy of the information on the Wikipedia page.
Editing Wikipedia articles
Before you edit for the first time
Wikipedia is a free, online encyclopedia. Although anyone can edit or contribute to an article, Wikipedia has some strong editing guidelines and policies, which promote the Wikipedia standard of style and etiquette. Your edits and contributions are more likely to be accepted (and remain) if they are in accordance with this policy.
You should take a few minutes to view the following pages:
How your contribution will be recorded
Anyone can edit a Wikipedia entry. You can do this either as a new user or you can register with Wikipedia and log on. When you click on the "Edit Wikipedia article" button, your browser will direct you to the edit page for this entry in Wikipedia. If you are a registered user and currently logged in, your changes will be recorded under your Wikipedia user name. However, if you are not a registered user or are not logged on, your changes will be logged under your computer's IP address. This has two main implications. Firstly, as a registered Wikipedia user your edits are more likely seen as valuable contribution (although all edits are open to community scrutiny regardless). Secondly, if you edit under an IP address you may be sharing this IP address with other users. If your IP address has previously been blocked (due to being flagged as a source of 'vandalism') your edits will also be blocked. You can find more information on this and creating a user account at Wikipedia.
If you have problems editing a particular page, contact us at firstname.lastname@example.org and we will try to help.
The community annotation is a new facility of the Pfam web site. If you have problems editing or experience problems with these pages please contact us.
INCENP Edit Wikipedia article
|Inner centromere protein antigens 135/155kDa|
|External IDs||ChEMBL: GeneCards:|
|RNA expression pattern|
|Chromosome passenger complex (CPC) protein INCENP N terminal|
|Inner centromere protein, ARK binding region|
In mammalian cells, two broad groups of centromere-interacting proteins have been described: constitutively binding centromere proteins and 'passenger' (or transiently interacting) proteins. The constitutive proteins include CENPA (centromere protein A), CENPB, CENPC1, and CENPD.
The term 'passenger proteins' encompasses a broad collection of proteins that localize to the centromere during specific stages of the cell cycle. These include CENPE; MCAK; KID; cytoplasmic dynein (e.g., DYNC1H1); CliPs (e.g. CLIP1); and CENPF/mitosin (CENPF). The inner centromere proteins (INCENPs), the initial members of the passenger protein group, display a broad localization along chromosomes in the early stages of mitosis but gradually become concentrated at centromeres as the cell cycle progresses into mid-metaphase. During telophase, the proteins are located within the midbody in the intercellular bridge, where they are discarded after cytokinesis.
INCENP is a regulatory protein in the chromosome passenger complex. It is involved in regulation of the catalytic protein Aurora B. It performs this function in association with two other proteins - Survivin and Borealin. These proteins form a tight three-helical bundle. The N-terminal domain of INCENP is the domain involved in formation of this three-helical bundle.
INCENP has been shown to interact with H2AFZ, Survivin and CDCA8. The ARK binding region has been found to be necessary and sufficient for binding to aurora-related kinase. This interaction has been implicated in the coordination of chromosome segregation with cell division in yeast.
- Earnshaw WC, Cooke CA (Sep 1991). "Analysis of the distribution of the INCENPs throughout mitosis reveals the existence of a pathway of structural changes in the chromosomes during metaphase and early events in cleavage furrow formation". J Cell Sci 98 (4): 443–61. PMID 1860899.
- Adams RR, Eckley DM, Vagnarelli P, Wheatley SP, Gerloff DL, Mackay AM, Svingen PA, Kaufmann SH, Earnshaw WC (Jul 2001). "Human INCENP colocalizes with the Aurora-B/AIRK2 kinase on chromosomes and is overexpressed in tumour cells". Chromosoma 110 (2): 65–74. doi:10.1007/s004120100130. PMID 11453556.
- "Entrez Gene: INCENP inner centromere protein antigens 135/155kDa".
- Choo, K. H. Andy (1997). The centromere. Oxford [Oxfordshire]: Oxford University Press. ISBN 0-19-857780-X.
- Earnshaw WC, Mackay AM (September 1994). "Role of nonhistone proteins in the chromosomal events of mitosis". FASEB J. 8 (12): 947–56. PMID 8088460.
- Cutts SM, Fowler KJ, Kile BT, Hii LL, O'Dowd RA, Hudson DF, Saffery R, Kalitsis P, Earle E, Choo KH (July 1999). "Defective chromosome segregation, microtubule bundling and nuclear bridging in inner centromere protein gene (Incenp)-disrupted mice". Hum. Mol. Genet. 8 (7): 1145–55. doi:10.1093/hmg/8.7.1145. PMID 10369859.
- Jeyaprakash, A. A.; Klein, U. R.; Lindner, D.; Ebert, J.; Nigg, E. A.; Conti, E. (2007). "Structure of a Survivin–Borealin–INCENP Core Complex Reveals How Chromosomal Passengers Travel Together". Cell 131 (2): 271–285. doi:10.1016/j.cell.2007.07.045. PMID 17956729.
- Rangasamy D, Berven L, Ridgway P, Tremethick DJ (April 2003). "Pericentric heterochromatin becomes enriched with H2A.Z during early mammalian development". EMBO J. 22 (7): 1599–607. doi:10.1093/emboj/cdg160. PMC 152904. PMID 12660166.
- Wheatley SP, Carvalho A, Vagnarelli P, Earnshaw WC (June 2001). "INCENP is required for proper targeting of Survivin to the centromeres and the anaphase spindle during mitosis". Curr. Biol. 11 (11): 886–90. doi:10.1016/S0960-9822(01)00238-X. PMID 11516652.
- Gassmann R, Carvalho A, Henzing AJ, Ruchaud S, Hudson DF, Honda R, Nigg EA, Gerloff DL, Earnshaw WC (July 2004). "Borealin: a novel chromosomal passenger required for stability of the bipolar mitotic spindle". J. Cell Biol. 166 (2): 179–91. doi:10.1083/jcb.200404001. PMC 2172304. PMID 15249581.
- Leverson JD, Huang HK, Forsburg SL, Hunter T (April 2002). "The Schizosaccharomyces pombe aurora-related kinase Ark1 interacts with the inner centromere protein Pic1 and mediates chromosome segregation and cytokinesis". Mol. Biol. Cell 13 (4): 1132–43. doi:10.1091/mbc.01-07-0330. PMC 102257. PMID 11950927.
- Ainsztein AM, Kandels-Lewis SE, Mackay AM, Earnshaw WC (1999). "INCENP centromere and spindle targeting: identification of essential conserved motifs and involvement of heterochromatin protein HP1.". J. Cell Biol. 143 (7): 1763–74. doi:10.1083/jcb.143.7.1763. PMC 2175214. PMID 9864353.
- Martineau-Thuillier S, Andreassen PR, Margolis RL (1999). "Colocalization of TD-60 and INCENP throughout G2 and mitosis: evidence for their possible interaction in signalling cytokinesis.". Chromosoma 107 (6-7): 461–70. doi:10.1007/s004120050330. PMID 9914378.
- Dias Neto E, Correa RG, Verjovski-Almeida S, et al. (2000). "Shotgun sequencing of the human transcriptome with ORF expressed sequence tags.". Proc. Natl. Acad. Sci. U.S.A. 97 (7): 3491–6. doi:10.1073/pnas.97.7.3491. PMC 16267. PMID 10737800.
- Wheatley SP, Kandels-Lewis SE, Adams RR, et al. (2001). "INCENP binds directly to tubulin and requires dynamic microtubules to target to the cleavage furrow.". Exp. Cell Res. 262 (2): 122–7. doi:10.1006/excr.2000.5088. PMID 11139336.
- Wheatley SP, Carvalho A, Vagnarelli P, Earnshaw WC (2001). "INCENP is required for proper targeting of Survivin to the centromeres and the anaphase spindle during mitosis.". Curr. Biol. 11 (11): 886–90. doi:10.1016/S0960-9822(01)00238-X. PMID 11516652.
- Strausberg RL, Feingold EA, Grouse LH, et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences.". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
- Parra MT, Viera A, Gómez R, et al. (2003). "Dynamic relocalization of the chromosomal passenger complex proteins inner centromere protein (INCENP) and aurora-B kinase during male mouse meiosis.". J. Cell. Sci. 116 (Pt 6): 961–74. doi:10.1242/jcs.00330. PMID 12584241.
- Rangasamy D, Berven L, Ridgway P, Tremethick DJ (2003). "Pericentric heterochromatin becomes enriched with H2A.Z during early mammalian development.". EMBO J. 22 (7): 1599–607. doi:10.1093/emboj/cdg160. PMC 152904. PMID 12660166.
- Honda R, Körner R, Nigg EA (2004). "Exploring the functional interactions between Aurora B, INCENP, and survivin in mitosis.". Mol. Biol. Cell 14 (8): 3325–41. doi:10.1091/mbc.E02-11-0769. PMC 181570. PMID 12925766.
- Wheatley SP, Henzing AJ, Dodson H, et al. (2004). "Aurora-B phosphorylation in vitro identifies a residue of survivin that is essential for its localization and binding to inner centromere protein (INCENP) in vivo.". J. Biol. Chem. 279 (7): 5655–60. doi:10.1074/jbc.M311299200. PMID 14610074.
- Ota T, Suzuki Y, Nishikawa T, et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs.". Nat. Genet. 36 (1): 40–5. doi:10.1038/ng1285. PMID 14702039.
- Gassmann R, Carvalho A, Henzing AJ, et al. (2004). "Borealin: a novel chromosomal passenger required for stability of the bipolar mitotic spindle.". J. Cell Biol. 166 (2): 179–91. doi:10.1083/jcb.200404001. PMC 2172304. PMID 15249581.
- Li X, Sakashita G, Matsuzaki H, et al. (2004). "Direct association with inner centromere protein (INCENP) activates the novel chromosomal passenger protein, Aurora-C.". J. Biol. Chem. 279 (45): 47201–11. doi:10.1074/jbc.M403029200. PMID 15316025.
- Gerhard DS, Wagner L, Feingold EA, et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC).". Genome Res. 14 (10B): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.
- Zhu C, Bossy-Wetzel E, Jiang W (2005). "Recruitment of MKLP1 to the spindle midzone/midbody by INCENP is essential for midbody formation and completion of cytokinesis in human cells.". Biochem. J. 389 (Pt 2): 373–81. doi:10.1042/BJ20050097. PMC 1175114. PMID 15796717.
- Chen HL, Tang CJ, Chen CY, Tang TK (2005). "Overexpression of an Aurora-C kinase-deficient mutant disrupts the Aurora-B/INCENP complex and induces polyploidy.". J. Biomed. Sci. 12 (2): 297–310. doi:10.1007/s11373-005-0980-0. PMID 15917996.
- Vader G, Kauw JJ, Medema RH, Lens SM (2006). "Survivin mediates targeting of the chromosomal passenger complex to the centromere and midbody.". EMBO Rep. 7 (1): 85–92. doi:10.1038/sj.embor.7400562. PMC 1369225. PMID 16239925.
- Goto H, Kiyono T, Tomono Y, et al. (2006). "Complex formation of Plk1 and INCENP required for metaphase-anaphase transition.". Nat. Cell Biol. 8 (2): 180–7. doi:10.1038/ncb1350. PMID 16378098.
|This article on a gene on chromosome 11 is a stub. You can help Wikipedia by expanding it.|
This tab holds the annotation information that is stored in the Pfam database. As we move to using Wikipedia as our main source of annotation, the contents of this tab will be gradually replaced by the Wikipedia tab.
Inner centromere protein, ARK binding region Provide feedback
This region of the inner centromere protein has been found to be necessary and sufficient for binding to aurora-related kinase. This interaction has been implicated in the coordination of chromosome segregation with cell division in yeast.
Leverson JD, Huang Hk HK, Forsburg SL, Hunter T; , Mol Biol Cell 2002;13:1132-1143.: The Schizosaccharomyces pombe Aurora-related Kinase Ark1 Interacts with the Inner Centromere Protein Pic1 and Mediates Chromosome Segregation and Cytokinesis. PUBMED:11950927 EPMC:11950927
External database links
This tab holds annotation information from the InterPro database.
InterPro entry IPR005635
This region of the inner centromere protein has been found to be necessary and sufficient for binding to aurora-related kinase. This interaction has been implicated in the coordination of chromosome segregation with cell division in yeast [PUBMED:11950927].
Below is a listing of the unique domain organisations or architectures in which this domain is found. More...
The graphic that is shown by default represents the longest sequence with a given architecture. Each row contains the following information:
- the number of sequences which exhibit this architecture
a textual description of the architecture, e.g. Gla, EGF x 2, Trypsin.
This example describes an architecture with one
Gladomain, followed by two consecutive
EGFdomains, and finally a single
- a link to the page in the Pfam site showing information about the sequence that the graphic describes
- the UniProt description of the protein sequence
- the number of residues in the sequence
- the Pfam graphic itself.
Note that you can see the family page for a particular domain by clicking on the graphic. You can also choose to see all sequences which have a given architecture by clicking on the Show link in each row.
Finally, because some families can be found in a very large number of architectures, we load only the first fifty architectures by default. If you want to see more architectures, click the button at the bottom of the page to load the next set.
Loading domain graphics...
We store a range of different sequence alignments for families. As well as the seed alignment from which the family is built, we provide the full alignment, generated by searching the sequence database using the family HMM. We also generate alignments using four representative proteomes (RP) sets, the NCBI sequence database, and our metagenomics sequence database. More...
There are various ways to view or download the sequence alignments that we store. We provide several sequence viewers and a plain-text Stockholm-format file for download.
We make a range of alignments for each Pfam-A family:
- the curated alignment from which the HMM for the family is built
- the alignment generated by searching the sequence database using the HMM
- Representative Proteomes (RPs) at 15%, 35%, 55% and 75% co-membership thresholds
- alignment generated by searching the NCBI sequence database using the family HMM
- alignment generated by searching the metagenomics sequence database using the family HMM
You can see the alignments as HTML or in three different sequence viewers:
- a Java applet developed at the University of Dundee. You will need Java installed before running jalview
- an HTML page showing the whole alignment.Please note: full Pfam alignments can be very large. These HTML views are extremely large and often cause problems for browsers. Please use either jalview or the Pfam viewer if you have trouble viewing the HTML version
- an HTML-based representation of the alignment, coloured according to the posterior-probability (PP) values from the HMM. As for the standard HTML view, heatmap alignments can also be very large and slow to render.
- Pfam viewer
- an HTML-based viewer that uses DAS to retrieve alignment fragments on request
You can download (or view in your browser) a text representation of a Pfam alignment in various formats:
You can also change the order in which sequences are listed in the alignment, change how insertions are represented, alter the characters that are used to represent gaps in sequences and, finally, choose whether to download the alignment or to view it in your browser directly.
You may find that large alignments cause problems for the viewers and the reformatting tool, so we also provide all alignments in Stockholm format. You can download either the plain text alignment, or a gzipped version of it.
We make a range of alignments for each Pfam-A family. You can see a description of each above. You can view these alignments in various ways but please note that some types of alignment are never generated while others may not be available for all families, most commonly because the alignments are too large to handle.
1Cannot generate PP/Heatmap alignments for seeds; no PP data available
Key: available, not generated, — not available.
Format an alignment
We make all of our alignments available in Stockholm format. You can download them here as raw, plain text files or as gzip-compressed files.
You can also download a FASTA format file containing the full-length sequences for all sequences in the full alignment.
MyHits provides a collection of tools to handle multiple sequence alignments. For example, one can refine a seed alignment (sequence addition or removal, re-alignment or manual edition) and then search databases for remote homologs using HMMER3.
HMM logos is one way of visualising profile HMMs. Logos provide a quick overview of the properties of an HMM in a graphical form. You can see a more detailed description of HMM logos and find out how you can interpret them here. More...
If you find these logos useful in your own work, please consider citing the following article:
This page displays the phylogenetic tree for this family's seed alignment. We use FastTree to calculate neighbour join trees with a local bootstrap based on 100 resamples (shown next to the tree nodes). FastTree calculates approximately-maximum-likelihood phylogenetic trees from our seed alignment.
Note: You can also download the data file for the tree.
Curation and family details
This section shows the detailed information about the Pfam family. You can see the definitions of many of the terms in this section in the glossary and a fuller explanation of the scoring system that we use in the scores section of the help pages.
|Seed source:||Pfam-B_67765 (release 7.2)|
|Author:||Wood V, Griffiths-Jones SR|
|Number in seed:||20|
|Number in full:||272|
|Average length of the domain:||57.30 aa|
|Average identity of full alignment:||33 %|
|Average coverage of the sequence by the domain:||6.18 %|
|HMM build commands:||
build method: hmmbuild -o /dev/null HMM SEED
search method: hmmsearch -Z 23193494 -E 1000 --cpu 4 HMM pfamseq
|Family (HMM) version:||10|
|Download:||download the raw HMM for this family|
Weight segments by...
Change the size of the sunburst
selected sequences to HMM
a FASTA-format file
- 0 sequences
- 0 species
This visualisation provides a simple graphical representation of the distribution of this family across species. You can find the original interactive tree in the More....
This chart is a modified "sunburst" visualisation of the species tree for this family. It shows each node in the tree as a separate arc, arranged radially with the superkingdoms at the centre and the species arrayed around the outermost ring.
How the sunburst is generated
The tree is built by considering the taxonomic lineage of each sequence that has a match to this family. For each node in the resulting tree, we draw an arc in the sunburst. The radius of the arc, its distance from the root node at the centre of the sunburst, shows the taxonomic level ("superkingdom", "kingdom", etc). The length of the arc represents either the number of sequences represented at a given level, or the number of species that are found beneath the node in the tree. The weighting scheme can be changed using the sunburst controls.
In order to reduce the complexity of the representation, we reduce the number of taxonomic levels that we show. We consider only the following eight major taxonomic levels:
Colouring and labels
Segments of the tree are coloured approximately according to their superkingdom. For example, archeal branches are coloured with shades of orange, eukaryotes in shades of purple, etc. The colour assignments are shown under the sunburst controls. Where space allows, the name of the taxonomic level will be written on the arc itself.
As you move your mouse across the sunburst, the current node will be highlighted. In the top section of the controls panel we show a summary of the lineage of the currently highlighed node. If you pause over an arc, a tooltip will be shown, giving the name of the taxonomic level in the title and a summary of the number of sequences and species below that node in the tree.
Anomalies in the taxonomy tree
There are some situations that the sunburst tree cannot easily handle and for which we have work-arounds in place.
Missing taxonomic levels
Some species in the taxonomic tree may not have one or more of the main eight levels that we display. For example, Bos taurus is not assigned an order in the NCBI taxonomic tree. In such cases we mark the omitted level with, for example, "No order", in both the tooltip and the lineage summary.
Unmapped species names
The tree is built by looking at each sequence in the full alignment for the family. We take the name of the species given by UniProt and try to map that to the full taxonomic tree from NCBI. In some cases, the name chosen by UniProt does not map to any node in the NCBI tree, perhaps because the chosen name is listed as a synonym or a misspelling in the NCBI taxonomy.
So that these nodes are not simply omitted from the sunburst tree, we group them together in a separate branch (or segment of the sunburst tree). Since we cannot determine the lineage for these unmapped species, we show all levels between the superkingdom and the species as "uncategorised".
Since we reduce the species tree to only the eight main taxonomic levels, sequences that are mapped to the sub-species level in the tree would not normally be shown. Rather than leave out these species, we map them instead to their parent species. So, for example, for sequences belonging to one of the Vibrio cholerae sub-species in the NCBI taxonomy, we show them instead as belonging to the species Vibrio cholerae.
Too many species/sequences
For large species trees, you may see blank regions in the outer layers of the sunburst. These occur when there are large numbers of arcs to be drawn in a small space. If an arc is less than approximately one pixel wide, it will not be drawn and the space will be left blank. You may still be able to get some information about the species in that region by moving your mouse across the area, but since each arc will be very small, it will be difficult to accurately locate a particular species.
The tree shows the occurrence of this domain across different species. More...
We show the species tree in one of two ways. For smaller trees we try to show an interactive representation, which allows you to select specific nodes in the tree and view them as an alignment or as a set of Pfam domain graphics.
Unfortunately we have found that there are problems viewing the interactive tree when the it becomes larger than a certain limit. Furthermore, we have found that Internet Explorer can become unresponsive when viewing some trees, regardless of their size. We therefore show a text representation of the species tree when the size is above a certain limit or if you are using Internet Explorer to view the site.
If you are using IE you can still load the interactive tree by clicking the "Generate interactive tree" button, but please be aware of the potential problems that the interactive species tree can cause.
For all of the domain matches in a full alignment, we count the number that are found on all sequences in the alignment. This total is shown in the purple box.
We also count the number of unique sequences on which each domain is found, which is shown in green. Note that a domain may appear multiple times on the same sequence, leading to the difference between these two numbers.
Finally, we group sequences from the same organism according to the NCBI code that is assigned by UniProt, allowing us to count the number of distinct sequences on which the domain is found. This value is shown in the pink boxes.
We use the NCBI species tree to group organisms according to their taxonomy and this forms the structure of the displayed tree. Note that in some cases the trees are too large (have too many nodes) to allow us to build an interactive tree, but in most cases you can still view the tree in a plain text, non-interactive representation. Those species which are represented in the seed alignment for this domain are highlighted.
You can use the tree controls to manipulate how the interactive tree is displayed:
- show/hide the summary boxes
- highlight species that are represented in the seed alignment
- expand/collapse the tree or expand it to a given depth
- select a sub-tree or a set of species within the tree and view them graphically or as an alignment
- save a plain text representation of the tree
Please note: for large trees this can take some time. While the tree is loading, you can safely switch away from this tab but if you browse away from the family page entirely, the tree will not be loaded.
For those sequences which have a structure in the Protein DataBank, we use the mapping between UniProt, PDB and Pfam coordinate systems from the PDBe group, to allow us to map Pfam domains onto UniProt sequences and three-dimensional protein structures. The table below shows the structures on which the INCENP_ARK-bind domain has been found. There are 13 instances of this domain found in the PDB. Note that there may be multiple copies of the domain in a single PDB structure, since many structures contain multiple copies of the same protein seqence.
Loading structure mapping...