The world's first wiki where authorship really matters (Nature Genetics, 2008). Due credit and reputation for authors. Imagine a global collaborative knowledge base for original thoughts. Search thousands of articles and collaborate with scientists around the globe.

wikigene or wiki gene protein drug chemical gene disease author authorship tracking collaborative publishing evolutionary knowledge reputation system wiki2.0 global collaboration genes proteins drugs chemicals diseases compound
Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)



Gene Review

CDK5R2  -  cyclin-dependent kinase 5, regulatory...

Homo sapiens

Synonyms: CDK5 activator 2, Cyclin-dependent kinase 5 activator 2, Cyclin-dependent kinase 5 regulatory subunit 2, NCK5AI, P39, ...
Welcome! If you are familiar with the subject of this article, you can contribute to this open access knowledge base by deleting incorrect information, restructuring or completely rewriting any text. Read more.

Disease relevance of CDK5R2


High impact information on CDK5R2

  • Using the myeloid cell line P39, we show that ATRA disturbs mitochondrial functional activity long before any detectable signs of apoptosis occur [6].
  • In addition, specific inhibitors of vacuolar H+-ATPase induced apoptosis in P39 cells but not in HL60 cells [7].
  • The isoform, designated the neuronal Cdk5 activator isoform (p39nck5ai), showed a high degree of sequence similarity to p35nck5a with 57% amino acid identity [8].
  • Previtellogenic oocytes of Triturus cristatus accumulate a free cytoplasmic RNP which sediments at 40S and contain 5S RNA and tRNA in association with two proteins of MW 45,000 and 39,000 daltons (P45 and P39) [9].
  • Proteolytic cleavage patterns and subtype-specific size differences suggested that the sequence of P39 starts with the first initiation signal of the open reading frame [10].

Biological context of CDK5R2


Anatomical context of CDK5R2

  • Marked apoptosis of human myelomonocytic leukemia cell line P39: significance of cellular differentiation [2].
  • The best protection was conferred by a serotype O:9 strain carrying pCIP39, confirming the importance of the P39 T-cell antigen in this mechanism [3].
  • Combined abnormalities of P30 and P39 potentials thus indicate that conduction is impaired at the spinal level and proved to be particularly informative for detecting spinal cord dysfunction in patients with neuroimaging evidence of a narrowed cervical canal [13].
  • Strains P11, P35(T) and P39 exhibited motility via means of monotrichous flagella [14].
  • These results indicate that P39/Tsugane is the first cultured cell line of myelomonocytoid nature to be derived from overt leukemia following MDS [15].

Associations of CDK5R2 with chemical compounds

  • Moreover, RA-treated P39 cells are unique in the simultaneous occurrence of profound apoptosis and differentiation [2].
  • Its C-terminal disulfide bridge renders P78 significantly more stable than P39 to thermal denaturation or denaturation by urea [16].
  • Two pathways of apoptosis induced with all-trans retinoic acid and etoposide in the myeloid cell line P39 [17].
  • MS-430 also induced monocytic differentiation of THP-1, P39/Tsu, and P31/Fuj leukemia cells, but did not affect erythroid differentiation of K562 or HEL cells [18].
  • Strains P11, P35(T) and P39 were isolated from the groundwater of an aquifer in Plymouth, MA, USA, in which Fe(III) reduction is important because of long-term inputs of acetate as a highway de-icing agent to the subsurface [14].

Analytical, diagnostic and therapeutic context of CDK5R2

  • Flow cytometry using a pH-sensitive probe demonstrated that lysosomal pH increased during early apoptosis in P39 cells treated with etoposide [7].
  • All three antibodies were reactive in an enzyme immunoassay with cloned P39 (W.J. Simpson, M.E. Schrumpf, and T.G. Schwan, J. Clin. Microbiol. 28:1329-1337, 1990), suggesting that the target molecule of these antibodies is identical to the P39 protein [4].
  • All of 33 the serum specimens with immunofluorescence assay titers of greater than or equal to 1:256, 13 of 17 serum specimens with titers of 1:128, and 14 of 44 serum specimens with titers of less than or equal to 1:64 reacted with P39 [19].
  • Western blot tests based on the P39 protein were more specific than P39 ELISA yielding no false positive or indeterminate results [5].
  • The diagnostic value of serologic tests using the recombinant P39 protein of Borrelia burgdorferi was compared with that of tests prepared from a whole spirochete antigen source [5].


  1. P39 immunoreactivity in glial cytoplasmic inclusions in brains with multiple system atrophy. Honjyo, Y., Kawamoto, Y., Nakamura, S., Nakano, S., Akiguchi, I. Acta Neuropathol. (2001) [Pubmed]
  2. Marked apoptosis of human myelomonocytic leukemia cell line P39: significance of cellular differentiation. Anzai, N., Kawabata, H., Hirama, T., Masutani, H., Ohmori, M., Yoshida, Y., Okuma, M. Leukemia (1994) [Pubmed]
  3. Yersinia enterocolitica as a vehicle for a naked DNA vaccine encoding Brucella abortus bacterioferritin or P39 antigen. Al-Mariri, A., Tibor, A., Lestrate, P., Mertens, P., De Bolle, X., Letesson, J.J. Infect. Immun. (2002) [Pubmed]
  4. The 39-kilodalton protein of Borrelia burgdorferi: a target for bactericidal human monoclonal antibodies. Scriba, M., Ebrahim, J.S., Schlott, T., Eiffert, H. Infect. Immun. (1993) [Pubmed]
  5. Detection of antibodies to the recombinant P39 protein of Borrelia burgdorferi using enzyme immunoassay and immunoblotting. Fawcett, P.T., Rose, C., Gibney, K.M., Chase, C.A., Kiehl, B., Doughty, R.A. J. Rheumatol. (1993) [Pubmed]
  6. Early mitochondrial alterations in ATRA-induced cell death. Schmidt-Mende, J., Gogvadze, V., Hellström-Lindberg, E., Zhivotovsky, B. Cell Death Differ. (2006) [Pubmed]
  7. Caspase-3 activation by lysosomal enzymes in cytochrome c-independent apoptosis in myelodysplastic syndrome-derived cell line P39. Hishita, T., Tada-Oikawa, S., Tohyama, K., Miura, Y., Nishihara, T., Tohyama, Y., Yoshida, Y., Uchiyama, T., Kawanishi, S. Cancer Res. (2001) [Pubmed]
  8. An isoform of the neuronal cyclin-dependent kinase 5 (Cdk5) activator. Tang, D., Yeung, J., Lee, K.Y., Matsushita, M., Matsui, H., Tomizawa, K., Hatase, O., Wang, J.H. J. Biol. Chem. (1995) [Pubmed]
  9. Analysis of reconstruction of an RNP particle which stores 5S RNA and tRNA in amphibian oocytes. Kloetzel, P.M., Whitfield, W., Sommerville, J. Nucleic Acids Res. (1981) [Pubmed]
  10. Large surface proteins of hepatitis B virus containing the pre-s sequence. Heermann, K.H., Goldmann, U., Schwartz, W., Seyffarth, T., Baumgarten, H., Gerlich, W.H. J. Virol. (1984) [Pubmed]
  11. Assignment of CDK5R2 coding for the cyclin-dependent kinase 5, regulatory subunit 2 (NCK5AI protein) to human chromosome band 2q35 by fluorescent in situ hybridization. Muravenko, O.V., Gizatullin, R.Z., Protopopov, A.I., Kashuba, V.I., Zabarovsky, E.R., Zelenin, A.V. Cytogenet. Cell Genet. (2000) [Pubmed]
  12. Induction of apoptosis by bestatin (ubenimex) in human leukemic cell lines. Sekine, K., Fujii, H., Abe, F. Leukemia (1999) [Pubmed]
  13. Assessment of intraspinal and intracranial conduction by P30 and P39 tibial nerve somatosensory evoked potentials in cervical cord, brainstem, and hemispheric lesions. Tinazzi, M., Mauguière, F. Journal of clinical neurophysiology : official publication of the American Electroencephalographic Society. (1995) [Pubmed]
  14. Geobacter bemidjiensis sp. nov. and Geobacter psychrophilus sp. nov., two novel Fe(III)-reducing subsurface isolates. Nevin, K.P., Holmes, D.E., Woodard, T.L., Hinlein, E.S., Ostendorf, D.W., Lovley, D.R. Int. J. Syst. Evol. Microbiol. (2005) [Pubmed]
  15. A novel human myelomonocytoid cell line, P39/Tsugane, derived from overt leukemia following myelodysplastic syndrome. Nagai, M., Seki, S., Kitahara, T., Abe, T., Minato, K., Watanabe, S., Shimoyama, M. Gann = Gan. (1984) [Pubmed]
  16. Designed coiled-coil proteins: synthesis and spectroscopy of two 78-residue alpha-helical dimers. Engel, M., Williams, R.W., Erickson, B.W. Biochemistry (1991) [Pubmed]
  17. Two pathways of apoptosis induced with all-trans retinoic acid and etoposide in the myeloid cell line P39. Hassan, Z., Fadeel, B., Zhivotovsky, B., Hellström-Lindberg, E. Exp. Hematol. (1999) [Pubmed]
  18. Induction of differentiation of human myeloid leukemia cells by novel synthetic neurotrophic pyrimidine derivatives. Honma, Y., Ishii, Y., Kasukabe, T., Okabe-Kado, J., Yamamoto-Yamaguchi, Y., Kakegawa, T., Awaya, A. Exp. Hematol. (2001) [Pubmed]
  19. Reactivity of human Lyme borreliosis sera with a 39-kilodalton antigen specific to Borrelia burgdorferi. Simpson, W.J., Schrumpf, M.E., Schwan, T.G. J. Clin. Microbiol. (1990) [Pubmed]
WikiGenes - Universities