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Reviewed, UniProtKB/Swiss-Prot P51955 (NEK2_HUMAN)

Last modified November 3, 2009. Version 109. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (7) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Serine/threonine-protein kinase Nek2
    EC=2.7.11.1
Alternative name(s):
    NimA-related protein kinase 2
    NimA-like protein kinase 1
    HSPK 21
Gene names
Name: NEK2
Synonyms: NLK1
OrganismHomo sapiens (Human) [Complete proteome]
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length445 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is not processed.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

Protein kinase that is involved in mitotic regulation. May have a role at the G2-M transition. May also play a role in meiosis. Isoform 1 but not isoform 2 appears to play a role in centrosome splitting. Isoform 1 phosphorylates and activates NEK11 in G1/S-arrested cells. Isoform 2, which is not present in the nucleolus, does not. Ref.2 Ref.9

Catalytic activity

ATP + a protein = ADP + a phosphoprotein.

Cofactor

Magnesium.

Subunit structure

Interacts with TERF1. Isoform 1 and isoform 2 form homo- and heterodimers. Ref.2

Subcellular location

Nucleus. Ref.2 Ref.9

Isoform 1: Nucleusnucleolus. Note: Has a nucleolar targeting/ retention activity via a coiled-coil domain at the C-terminal end. Ref.2 Ref.9

Isoform 2: Cytoplasm. Note: Predominantly cytoplasmic. Ref.2 Ref.9

Tissue specificity

Isoform 1 and isoform 2 are expressed in peripheral blood T-cells and a wide variety of transformed cell types. Ref.2

Developmental stage

Accumulates throughout S phase and shows maximal levels in late G2. This expression pattern is highly reminiscent of that of A and B cyclins. Expression of both isoform 1 and isoform 2 is low in the G1 phase and increases in the S/G2 phases. Isoform 1 is absent from cells arrested in the G2/M prometaphase, whereas isoform 2 remains present. Ref.2

Post-translational modification

It is unsure whether Thr-170 or Ser-171 is phosphorylated. Ref.10 Ref.11 Ref.12

Sequence similarities

Belongs to the protein kinase superfamily. NEK Ser/Thr protein kinase family. NIMA subfamily.

Contains 1 protein kinase domain.

Sequence caution

The sequence AAH65932.1 differs from that shown. Reason: Frameshift at position 213.

Binary interactions

Alternative products

This entry describes 3 isoforms produced by alternative splicing. [Align] [Select]
Isoform 1 (identifier: P51955-1)

Also known as: A;

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Note: Has a nucleolar targeting/ retention activity via a coiled-coil domain at the C-terminal end. Ref.2 Ref.9
Isoform 2 (identifier: P51955-2)

Also known as: B;

The sequence of this isoform differs from the canonical sequence as follows:
     371-384: ELLNLPSSVIKKKV → GMRINLVNRSWCYK
     385-445: Missing.
Note: Predominantly cytoplasmic. Ref.2 Ref.9
Isoform 3 (identifier: P51955-3)

The sequence of this isoform differs from the canonical sequence as follows:
     323-326: REER → KKKK
     327-445: Missing.
Note: No experimental confirmation available.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 445445Serine/threonine-protein kinase Nek2
PRO_0000086421

Regions

Domain8 – 271264Protein kinase
Nucleotide binding14 – 229ATP By similarity
Coiled coil303 – 36260 Potential
Coiled coil406 – 43025 Potential

Sites

Active site1411Proton acceptor By similarity
Binding site371ATP

Amino acid modifications

Modified residue1701Phosphothreonine; by autocatalysis Probable
Modified residue1711Phosphoserine; by autocatalysis Probable
Modified residue1751Phosphothreonine; by autocatalysis Ref.12
Modified residue1791Phosphothreonine; by autocatalysis Ref.12
Modified residue1841Phosphoserine Ref.11
Modified residue2411Phosphoserine; by autocatalysis Ref.12
Modified residue2961Phosphoserine Ref.11
Modified residue3001Phosphoserine Ref.11
Modified residue3561Phosphoserine Ref.12
Modified residue3871Phosphoserine Ref.12
Modified residue3901Phosphoserine Ref.12
Modified residue3971Phosphoserine Ref.10 Ref.12
Modified residue4021Phosphoserine Ref.12
Modified residue4281Phosphoserine Ref.12

Natural variations

Alternative sequence323 – 3264REER → KKKK in isoform 3.
VSP_015576
Alternative sequence327 – 445119Missing in isoform 3.
VSP_015577
Alternative sequence371 – 38414ELLNL…IKKKV → GMRINLVNRSWCYK in isoform 2.
VSP_015578
Alternative sequence385 – 44561Missing in isoform 2.
VSP_015579
Natural variant3541N → S: dbSNP rs2230489. Ref.5 Ref.13
VAR_019990
Natural variant4101C → Y
VAR_040907

Experimental info

Mutagenesis371K → R: Loss of kinase activity and of ability to activate NEK11. Ref.9 Ref.12
Mutagenesis1411D → A: Loss of autophosphorylation. Ref.12
Mutagenesis1701T → A: No effect on kinase activity. Ref.12
Mutagenesis1701T → E: Kinase activity increased by two fold. Ref.12
Mutagenesis1711S → A: No effect on kinase activity. Ref.12
Mutagenesis1711S → D: Kinase activity increased by two fold. Ref.12
Mutagenesis1751T → A: Kinase activity decreased by two fold. Ref.12
Mutagenesis1751T → E: Kinase activity increased by two fold. Ref.12
Mutagenesis1791T → A: Loss of kinase activity. Ref.12
Mutagenesis1791T → E: Loss of kinase activity. Ref.12
Mutagenesis2411S → A: Loss of kinase activity. Ref.12
Mutagenesis2411S → D: Loss of kinase activity. Ref.12
Sequence conflict84 – 852IV → LY in CAA80912. Ref.8
Sequence conflict3251E → K in BAD97073. Ref.5

Secondary structure

...................................... 445
Helix Strand Turn

Details...

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 (A) [UniParc].

Last modified October 1, 1996. Version 1.
Checksum: D33A37778ABB6D9E

FASTA44551,763
        10         20         30         40         50         60 
MPSRAEDYEV LYTIGTGSYG RCQKIRRKSD GKILVWKELD YGSMTEAEKQ MLVSEVNLLR 

        70         80         90        100        110        120 
ELKHPNIVRY YDRIIDRTNT TLYIVMEYCE GGDLASVITK GTKERQYLDE EFVLRVMTQL 

       130        140        150        160        170        180 
TLALKECHRR SDGGHTVLHR DLKPANVFLD GKQNVKLGDF GLARILNHDT SFAKTFVGTP 

       190        200        210        220        230        240 
YYMSPEQMNR MSYNEKSDIW SLGCLLYELC ALMPPFTAFS QKELAGKIRE GKFRRIPYRY 

       250        260        270        280        290        300 
SDELNEIITR MLNLKDYHRP SVEEILENPL IADLVADEQR RNLERRGRQL GEPEKSQDSS 

       310        320        330        340        350        360 
PVLSELKLKE IQLQERERAL KAREERLEQK EQELCVRERL AEDKLARAEN LLKNYSLLKE 

       370        380        390        400        410        420 
RKFLSLASNP ELLNLPSSVI KKKVHFSGES KENIMRSENS ESQLTSKSKC KDLKKRLHAA 

       430        440 
QLRAQALSDI EKNYQLKSRQ ILGMR 

« Hide

Isoform 2 (B).

Checksum: EBFA8B6BB07480FB
Show »

FASTA38444,906
Isoform 3.

Checksum: 3F3FDD8262E77964
Show »

FASTA32637,956

References

« Hide 'large scale' references
[1]"Cell cycle-dependent expression of Nek2, a novel human protein kinase related to the NIMA mitotic regulator of Aspergillus nidulans."
Schultz S.J., Fry A.M., Suetterlin C., Ried T., Nigg E.A.
Cell Growth Differ. 5:625-635(1994) [PubMed: 7522034] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
Tissue: Nasopharynx, Placenta and T-cell.
[2]"Alternative splice variants of the human centrosome kinase Nek2 exhibit distinct patterns of expression in mitosis."
Hames R.S., Fry A.M.
Biochem. J. 361:77-85(2002) [PubMed: 11742531] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 2), FUNCTION, TISSUE SPECIFICITY, SUBCELLULAR LOCATION, DEVELOPMENTAL STAGE, DIMERIZATION.
[3]"Molecular cloning and expression of NLK1, a human NIMA-like kinase."
Lu K.P., Hunter T.
Submitted (JUL-1994) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[4]"Cloning of human full-length CDSs in BD Creator(TM) system donor vector."
Kalnine N., Chen X., Rolfs A., Halleck A., Hines L., Eisenstein S., Koundinya M., Raphael J., Moreira D., Kelley T., LaBaer J., Lin Y., Phelan M., Farmer A.
Submitted (OCT-2004) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
[5]Suzuki Y., Sugano S., Totoki Y., Toyoda A., Takeda T., Sakaki Y., Tanaka A., Yokoyama S.
Submitted (APR-2005) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1), VARIANT SER-354.
Tissue: Testis.
[6]"The DNA sequence and biological annotation of human chromosome 1."
Gregory S.G., Barlow K.F., McLay K.E., Kaul R., Swarbreck D., Dunham A., Scott C.E., Howe K.L., Woodfine K., Spencer C.C.A., Jones M.C., Gillson C., Searle S., Zhou Y., Kokocinski F., McDonald L., Evans R., Phillips K. expand/collapse author list , Atkinson A., Cooper R., Jones C., Hall R.E., Andrews T.D., Lloyd C., Ainscough R., Almeida J.P., Ambrose K.D., Anderson F., Andrew R.W., Ashwell R.I.S., Aubin K., Babbage A.K., Bagguley C.L., Bailey J., Beasley H., Bethel G., Bird C.P., Bray-Allen S., Brown J.Y., Brown A.J., Buckley D., Burton J., Bye J., Carder C., Chapman J.C., Clark S.Y., Clarke G., Clee C., Cobley V., Collier R.E., Corby N., Coville G.J., Davies J., Deadman R., Dunn M., Earthrowl M., Ellington A.G., Errington H., Frankish A., Frankland J., French L., Garner P., Garnett J., Gay L., Ghori M.R.J., Gibson R., Gilby L.M., Gillett W., Glithero R.J., Grafham D.V., Griffiths C., Griffiths-Jones S., Grocock R., Hammond S., Harrison E.S.I., Hart E., Haugen E., Heath P.D., Holmes S., Holt K., Howden P.J., Hunt A.R., Hunt S.E., Hunter G., Isherwood J., James R., Johnson C., Johnson D., Joy A., Kay M., Kershaw J.K., Kibukawa M., Kimberley A.M., King A., Knights A.J., Lad H., Laird G., Lawlor S., Leongamornlert D.A., Lloyd D.M., Loveland J., Lovell J., Lush M.J., Lyne R., Martin S., Mashreghi-Mohammadi M., Matthews L., Matthews N.S.W., McLaren S., Milne S., Mistry S., Moore M.J.F., Nickerson T., O'Dell C.N., Oliver K., Palmeiri A., Palmer S.A., Parker A., Patel D., Pearce A.V., Peck A.I., Pelan S., Phelps K., Phillimore B.J., Plumb R., Rajan J., Raymond C., Rouse G., Saenphimmachak C., Sehra H.K., Sheridan E., Shownkeen R., Sims S., Skuce C.D., Smith M., Steward C., Subramanian S., Sycamore N., Tracey A., Tromans A., Van Helmond Z., Wall M., Wallis J.M., White S., Whitehead S.L., Wilkinson J.E., Willey D.L., Williams H., Wilming L., Wray P.W., Wu Z., Coulson A., Vaudin M., Sulston J.E., Durbin R.M., Hubbard T., Wooster R., Dunham I., Carter N.P., McVean G., Ross M.T., Harrow J., Olson M.V., Beck S., Rogers J., Bentley D.R.
Nature 441:315-321(2006) [PubMed: 16710414] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[7]"The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)."
The MGC Project Team
Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORMS 1 AND 3).
Tissue: Mammary gland, Skin and Uterus.
[8]"Identification of 21 novel human protein kinases, including 3 members of a family related to the cell cycle regulator nimA of Aspergillus nidulans."
Schultz S.J., Nigg E.A.
Cell Growth Differ. 4:821-830(1993) [PubMed: 8274451] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 83-203.
[9]"Nucleolar Nek11 is a novel target of Nek2A in G1/S-arrested cells."
Noguchi K., Fukazawa H., Murakami Y., Uehara Y.
J. Biol. Chem. 279:32716-32727(2004) [PubMed: 15161910] [Abstract]
Cited for: FUNCTION, SUBCELLULAR LOCATION, ENZYME REGULATION, MUTAGENESIS OF LYS-37.
[10]"Phosphoproteome of resting human platelets."
Zahedi R.P., Lewandrowski U., Wiesner J., Wortelkamp S., Moebius J., Schuetz C., Walter U., Gambaryan S., Sickmann A.
J. Proteome Res. 7:526-534(2008) [PubMed: 18088087] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-397, MASS SPECTROMETRY.
Tissue: Platelet.
[11]"Kinase-selective enrichment enables quantitative phosphoproteomics of the kinome across the cell cycle."
Daub H., Olsen J.V., Bairlein M., Gnad F., Oppermann F.S., Korner R., Greff Z., Keri G., Stemmann O., Mann M.
Mol. Cell 31:438-448(2008) [PubMed: 18691976] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-184; SER-296 AND SER-300, MASS SPECTROMETRY.
[12]"Structure and regulation of the human Nek2 centrosomal kinase."
Rellos P., Ivins F.J., Baxter J.E., Pike A., Nott T.J., Parkinson D.M., Das S., Howell S., Fedorov O., Shen Q.Y., Fry A.M., Knapp S., Smerdon S.J.
J. Biol. Chem. 282:6833-6842(2007) [PubMed: 17197699] [Abstract]
Cited for: X-RAY CRYSTALLOGRAPHY (2.2 ANGSTROMS) OF 1-271 IN COMPLEX WITH INHIBITOR SU11652, PHOSPHORYLATION AT THR-170; SER-171; THR-175; THR-179; SER-241; SER-356; SER-387; SER-390; SER-397; SER-402 AND SER-428, MUTAGENESIS OF LYS-37; ASP-141; THR-170; SER-171; THR-175; THR-179 AND SER-241, MASS SPECTROMETRY.
[13]"Patterns of somatic mutation in human cancer genomes."
Greenman C., Stephens P., Smith R., Dalgliesh G.L., Hunter C., Bignell G., Davies H., Teague J., Butler A., Stevens C., Edkins S., O'Meara S., Vastrik I., Schmidt E.E., Avis T., Barthorpe S., Bhamra G., Buck G. expand/collapse author list , Choudhury B., Clements J., Cole J., Dicks E., Forbes S., Gray K., Halliday K., Harrison R., Hills K., Hinton J., Jenkinson A., Jones D., Menzies A., Mironenko T., Perry J., Raine K., Richardson D., Shepherd R., Small A., Tofts C., Varian J., Webb T., West S., Widaa S., Yates A., Cahill D.P., Louis D.N., Goldstraw P., Nicholson A.G., Brasseur F., Looijenga L., Weber B.L., Chiew Y.-E., DeFazio A., Greaves M.F., Green A.R., Campbell P., Birney E., Easton D.F., Chenevix-Trench G., Tan M.-H., Khoo S.K., Teh B.T., Yuen S.T., Leung S.Y., Wooster R., Futreal P.A., Stratton M.R.
Nature 446:153-158(2007) [PubMed: 17344846] [Abstract]
Cited for: VARIANTS [LARGE SCALE ANALYSIS] SER-354 AND TYR-410.
+Additional computationally mapped references.

Cross-references

Sequence databases

Z29066 mRNA. Translation: CAA82309.1.
AY045701 mRNA. Translation: AAK92212.1.
U11050 mRNA. Translation: AAA19558.1.
BT019729 mRNA. Translation: AAV38534.1.
AK223353 mRNA. Translation: BAD97073.1.
AL356310, AC096637 Genomic DNA. Translation: CAH72901.1.
BC043502 mRNA. Translation: AAH43502.2.
BC052807 mRNA. Translation: AAH52807.1.
BC065932 mRNA. Translation: AAH65932.1. Frameshift.
Z25425 mRNA. Translation: CAA80912.1.
IPIIPI00021331.
IPI00641713.
IPI00647904.
PIRG01452.
I38215.
RefSeqNP_002488.1.
UniGeneHs.153704

3D structure databases

EntryMethodResolution (Å)ChainPositionsPDBsum
2JAVX-ray2.20A1-271[»]
2W5AX-ray1.55A1-271[»]
2W5BX-ray2.40A1-271[»]
2W5HX-ray2.33A1-271[»]
ModBaseSearch...

Protein-protein interaction databases

IntActP51955. 4 interactions.
STRINGP51955.

PTM databases

PhosphoSiteP51955.

Proteomic databases

PRIDEP51955.

Genome annotation databases

EnsemblENST00000366998; ENSP00000355965; ENSG00000117650; Homo sapiens. [Genome view]
ENST00000366999; ENSP00000355966; ENSG00000117650; Homo sapiens. [Genome view]
GeneID4751.
KEGGhsa:4751.
UCSCuc001hir.1. human.
uc001his.2. human.

Organism-specific databases

CTD4751.
GeneCardsGC01M209902.
H-InvDBHIX0023615.
HGNCHGNC:7745. NEK2.
HPACAB017530.
MIM604043. gene.
PharmGKBPA31546.
GenAtlasSearch...

Phylogenomic databases

HOVERGENP51955.
OMATKERQYL.

Enzyme and pathway databases

BRENDA2.7.11.1. 247.
Pathway_Interaction_DBfoxm1pathway. FOXM1 transcription factor network.
ReactomeREACT_152. Cell Cycle, Mitotic.
REACT_8017. APC-Cdc20 mediated degradation of Nek2A.

Gene expression databases

ArrayExpressP51955.
BgeeP51955.
CleanExHS_NEK2.
GenevestigatorP51955.
GermOnlineENSG00000117650. Homo sapiens.

Family and domain databases

InterProIPR000719. Prot_kinase_core.
IPR017441. Protein_kinase_ATP_BS.
IPR017442. Se/Thr_pkinase-rel.
IPR008271. Ser_thr_pkin_AS.
IPR002290. Ser_thr_pkinase.
[Graphical view]
PfamPF00069. Pkinase. 1 hit.
[Graphical view]
ProDomPD000001. Prot_kinase. 1 hit.
[Graphical view] [Entries sharing at least one domain]
SMARTSM00220. S_TKc. 1 hit.
[Graphical view]
PROSITEPS00107. PROTEIN_KINASE_ATP. False negative.
PS50011. PROTEIN_KINASE_DOM. 1 hit.
PS00108. PROTEIN_KINASE_ST. 1 hit.
[Graphical view]
ProtoNetSearch...

Other Resources

NextBio18310.
PMAP-CutDBP51955.
SOURCESearch...

Entry information

Entry nameNEK2_HUMAN
AccessionPrimary (citable) accession number: P51955
Secondary accession number(s): Q53FD6 expand/collapse secondary AC list , Q5VXZ1, Q6NZX8, Q7Z634, Q86XH2, Q96QN9
Entry history
Integrated into UniProtKB/Swiss-Prot: October 1, 1996
Last sequence update: October 1, 1996
Last modified: November 3, 2009
This is version 109 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation projectHPI (Human Proteome Initiative)
DisclaimerAny medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care.

Relevant documents

Human chromosome 1

Human chromosome 1: entries, gene names and cross-references to MIM

Human entries with polymorphisms or disease mutations

List of human entries with polymorphisms or disease mutations

Human polymorphisms and disease mutations

Index of human polymorphisms and disease mutations

MIM cross-references

Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot

PDB cross-references

Index of Protein Data Bank (PDB) cross-references

Human and mouse protein kinases

Human and mouse protein kinases: classification and index

SIMILARITY comments

Index of protein domains and families

Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Binary interactions · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents