Summary: Chromosome passenger complex (CPC) protein INCENP N terminal

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Wikipedia: INCENP
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This is the Wikipedia entry entitled "INCENP". More...

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INCENP Edit Wikipedia article

INCENP

Available structures

PDB

Ortholog search: PDBe RCSB

List of PDB id codes
2QFA, 4AF3

Identifiers

Aliases

INCENP

External IDs

MGI: 1313288 HomoloGene: 9624 GeneCards: INCENP

Gene ontology
Molecular function	• protein binding
Cellular component	• cytoplasm • condensed chromosome kinetochore • central element • pericentric heterochromatin • spindle • nucleoplasm • protein complex • lateral element • chromosome • chromocenter • synaptonemal complex • chromosome, centromeric region • microtubule • cytoskeleton • kinetochore • nucleus • cytosol • nuclear body • midbody
Biological process	• mitotic nuclear division • chromosome segregation • cytokinesis • protein sumoylation • cell division • cell cycle • sister chromatid cohesion
Sources:Amigo / QuickGO

RNA expression pattern

More reference expression data

Orthologs

Species

Human

Mouse

Entrez


3619


16319

Ensembl


ENSG00000149503


ENSMUSG00000024660

UniProt


Q9NQS7


Q9WU62

RefSeq (mRNA)


NM_001040694 NM_020238


NM_016692

RefSeq (protein)


NP_001035784 NP_064623


NP_057901.2 NP_057901

Location (UCSC)

Chr 11: 62.12 – 62.15 Mb

Chr 19: 9.87 – 9.9 Mb

PubMed search

^[1]

^[2]

Wikidata

View/Edit Human

View/Edit Mouse

Chromosome passenger complex (CPC) protein INCENP N terminal

Identifiers

Symbol

INCENP_N

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

Inner centromere protein, ARK binding region

Identifiers

Symbol

INCENP_ARK-bind

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

Inner centromere protein is a protein that in humans is encoded by the INCENP gene.^[3]^[4]^[5]

In mammalian cells, two broad groups of centromere-interacting proteins have been described: constitutively binding centromere proteins and 'passenger' (or transiently interacting) proteins.^[6] 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.^[7] These include CENPE; MCAK; KID; cytoplasmic dynein (e.g., DYNC1H1); CliPs (e.g. CLIP1); and CENPF/mitosin (CENPF). The inner centromere proteins (INCENPs),^[3] 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.^[5]^[8]

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.^[9]

Interactions

INCENP has been shown to interact with H2AFZ,^[10] Survivin^[11] and CDCA8.^[12] 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.^[13]

References

^ "Human PubMed Reference:".
^ "Mouse PubMed Reference:".
^ ^a ^b 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.
^ ^a ^b "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.

Chromosome passenger complex (CPC) protein INCENP N terminal Provide feedback

This domain family is found in eukaryotes, and is approximately 40 amino acids in length. 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 is the domain involved in formation of this three helical bundle.

Literature references

Jeyaprakash AA, Klein UR, Lindner D, Ebert J, Nigg EA, Conti E;, Cell. 2007;131:271-285.: Structure of a Survivin-Borealin-INCENP core complex reveals how chromosomal passengers travel together. PUBMED:17956729 EPMC:17956729

This tab holds annotation information from the InterPro database.

InterPro entry IPR022006

This domain family is found in eukaryotes, and is approximately 40 amino acids in length. 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 is the domain involved in formation of this three helical bundle.

Domain organisation

Below is a listing of the unique domain organisations or architectures in which this domain is found. More...

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Alignments

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 (reference proteomes) using the family HMM. We also generate alignments using four representative proteomes (RP) sets, the UniProtKB sequence database, 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.

Alignment types

We make a range of alignments for each Pfam-A family:

seed: the curated alignment from which the HMM for the family is built
full: the alignment generated by searching the sequence database using the HMM
RP15/RP35/RP55/RP75: Representative Proteomes (RPs) at 15%, 35%, 55% and 75% co-membership thresholds
UniProt: alignment generated by searching the UniProtKB sequence database using the family HMM
NCBI: alignment generated by searching the NCBI sequence database using the family HMM
meta: alignment generated by searching the metagenomics sequence database using the family HMM

Viewing

You can see the alignments as HTML or in three different sequence viewers:

jalview: a Java applet developed at the University of Dundee. You will need Java installed before running jalview
HTML: 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
PP/Heatmap: 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.

Reformatting

You can download (or view in your browser) a text representation of a Pfam alignment in various formats:

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Stockholm
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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.

Downloading

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.

View options

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.

	Seed (14)	Full (84)	Representative proteomes				UniProt (126)	NCBI (447)	Meta (0)
	Seed (14)	Full (84)	RP15 (10)	RP35 (26)	RP55 (46)	RP75 (61)	UniProt (126)	NCBI (447)	Meta (0)
Jalview	View	View	View	View	View	View	View	View
HTML	View	View
PP/heatmap	₁	View

¹Cannot generate PP/Heatmap alignments for seeds; no PP data available

Key: available, not generated, — not available.

Format an alignment

	Seed (14)	Full (84)	Representative proteomes				UniProt (126)	NCBI (447)	Meta (0)
	Seed (14)	Full (84)	RP15 (10)	RP35 (26)	RP55 (46)	RP75 (61)	UniProt (126)	NCBI (447)	Meta (0)
Alignment:
Format:
Order:	Tree Alphabetical
Sequence:	Inserts lower case All upper case
Gaps:
Download/view:	Download View

Download options

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.

	Seed (14)	Full (84)	Representative proteomes				UniProt (126)	NCBI (447)	Meta (0)
	Seed (14)	Full (84)	RP15 (10)	RP35 (26)	RP55 (46)	RP75 (61)	UniProt (126)	NCBI (447)	Meta (0)
Raw Stockholm	Download	Download	Download	Download	Download	Download	Download	Download
Gzipped	Download	Download	Download	Download	Download	Download	Download	Download

You can also download a FASTA format file containing the full-length sequences for all sequences in the full alignment.

HMM logo

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...

Trees

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.

Curation

Seed source:

pdb_2qfa

Previous IDs:

none

Type:

Domain

Author:

Mistry J, Gavin OL

Number in seed:

14

Number in full:

84

Average length of the domain:

35.50 aa

Average identity of full alignment:

54 %

Average coverage of the sequence by the domain:

4.24 %

HMM information

HMM build commands:

build method: hmmbuild -o /dev/null HMM SEED

search method: hmmsearch -Z 26740544 -E 1000 --cpu 4 HMM pfamseq

Model details:

Parameter	Sequence	Domain
Gathering cut-off	20.6	20.6
Trusted cut-off	21.1	21.6
Noise cut-off	20.2	20.5

Model length:

36

Family (HMM) version:

7

Download:

download the raw HMM for this family

Species distribution

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Colour assignments

Archea	Eukaryota
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This visualisation provides a simple graphical representation of the distribution of this family across species. You can find the original interactive tree in the adjacent tab. 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:

superkingdom
kingdom
phylum
class
order
family
genus
species

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".

Sub-species

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.

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The tree shows the occurrence of this domain across different species. More...

Species trees

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.

Interactive tree

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
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Interactions

There is 1 interaction for this family. More...

Nbl1_Borealin_N

Structures

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_N domain has been found. There are 1 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.

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Family: INCENP_N (PF12178)

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Summary: Chromosome passenger complex (CPC) protein INCENP N terminal

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INCENP Edit Wikipedia article

Interactions

References

Further reading

Chromosome passenger complex (CPC) protein INCENP N terminal Provide feedback

Literature references

InterPro entry IPR022006

Domain organisation

Alignments

Alignment types

Viewing

Reformatting

Downloading

View options

Format an alignment

Download options

HMM logo

Trees

Curation and family details

Curation

HMM information

Species distribution

Sunburst controls

Weight segments by...

Change the size of the sunburst

Colour assignments

Selections

Currently selected:

How the sunburst is generated

Colouring and labels

Anomalies in the taxonomy tree

Missing taxonomic levels

Unmapped species names

Sub-species

Too many species/sequences

Tree controls

Annotation

Download tree

Selected sequences

Species trees

Interactive tree

Interactions

Structures