CBX1

CBX1
Available structures
PDB	Ortholog search: PDBe RCSB
List of PDB id codes
	3Q6S, 2FMM, 3F2U
Identifiers
Aliases	CBX1, CBX, HP1-BETA, HP1Hs-beta, HP1Hsbeta, M31, MOD1, p25beta, chromobox 1
External IDs	OMIM: 604511 MGI: 105369 HomoloGene: 89116 GeneCards: CBX1
Gene location (Human)
Chr.	Chromosome 17 (human)
End	48,101,478 bp
Gene location (Mouse)
Chr.	Chromosome 11 (mouse)
End	96,808,640 bp
RNA expression pattern
	More reference expression data
Gene ontology
Molecular function	• histone methyltransferase binding; • enzyme binding; • chromatin binding; • GO:0001948 protein binding; • protein homodimerization activity; • identical protein binding;
Cellular component	• chromocenter; • pericentric heterochromatin; • chromatin; • spindle; • chromosome, centromeric region; • male pronucleus; • female pronucleus; • nucleoplasm; • nucleus; • site of DNA damage;
Biological process	• negative regulation of transcription, DNA-templated; • cellular response to DNA damage stimulus;
	Sources:Amigo / QuickGO
Orthologs
	10951
	12412
	ENSG00000108468
	ENSMUSG00000018666
	P83916
	P83917
	NM_006807; NM_001127228
	NM_007622; NM_001362560; NM_001362561; NM_001362563; NM_001362564
	NP_001120700; NP_006798
	NP_031648; NP_001349489; NP_001349490; NP_001349492; NP_001349493
	Wikidata
View/Edit Human	View/Edit Mouse

Chromobox protein homolog 1 is a protein that in humans is encoded by the CBX1 gene.^[5]^[6]

Function[]

The protein is localized at heterochromatin sites, where it mediates gene silencing.^[6]

Model organisms[]

*Cbx1* knockout mouse phenotype
Characteristic	Phenotype
Homozygote viability	Abnormal
Fertility	Normal
Body weight	Normal
Anxiety	Normal
Neurological assessment	Normal
Grip strength	Normal
Hot plate	Normal
Dysmorphology	Normal
Indirect calorimetry	Abnormal^[7]
Glucose tolerance test	Normal
Auditory brainstem response	Normal
DEXA	Normal
Radiography	Normal
Body temperature	Normal
Eye morphology	Normal
Clinical chemistry	Normal
Haematology	Normal
Peripheral blood lymphocytes	Normal
Micronucleus test	Normal
Heart weight	Normal
Skin Histopathology	Normal
Eye Histopathology	Normal
All tests and analysis from^[8]^[9]

Model organisms have been used in the study of CBX1 function. A conditional knockout mouse line, called Cbx1^{tm1a(EUCOMM)Wtsi}^[10]^[11] was generated as part of the International Knockout Mouse Consortium program — a high-throughput mutagenesis project to generate and distribute animal models of disease to interested scientists — at the Wellcome Trust Sanger Institute.^[12]^[13]^[14]

Male and female animals underwent a standardized phenotypic screen to determine the effects of deletion.^[8]^[15] Twenty two tests were carried out and two phenotypes were reported. No homozygous mutant animals survived until two weeks of age, therefore the remaining tests were carried out on heterozygous mutant mice. Male heterozygotes showed increased VO2, rate of elimination of carbon dioxide, and energy expenditure as determined by indirect calorimetry.^[8]

Interactions[]

CBX1 has been shown to interact with:

C11orf30,^[16]
CBX3^[17] and
CBX5,^[17] and
SUV39H1.^[18]

References[]

^ ^a ^b ^c GRCh38: Ensembl release 89: ENSG00000108468 - Ensembl, May 2017
^ ^a ^b ^c GRCm38: Ensembl release 89: ENSMUSG00000018666 - Ensembl, May 2017
^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^ Furuta K, Chan EK, Kiyosawa K, Reimer G, Luderschmidt C, Tan EM (Jun 1997). "Heterochromatin protein HP1Hsbeta (p25beta) and its localization with centromeres in mitosis". Chromosoma. 106 (1): 11–9. doi:10.1007/s004120050219. PMID 9169582. S2CID 33460511.
^ ^a ^b "Entrez Gene: CBX1 chromobox homolog 1 (HP1 beta homolog Drosophila )".
^ "Indirect calorimetry data for Cbx1". Wellcome Trust Sanger Institute.
^ ^a ^b ^c Gerdin AK (2010). "The Sanger Mouse Genetics Programme: High throughput characterisation of knockout mice". Acta Ophthalmologica. 88 (S248). doi:10.1111/j.1755-3768.2010.4142.x. S2CID 85911512.
^ Mouse Resources Portal, Wellcome Trust Sanger Institute.
^ "International Knockout Mouse Consortium". Archived from the original on 2012-03-20. Retrieved 2012-01-05.
^ "Mouse Genome Informatics".
^ Skarnes WC, Rosen B, West AP, Koutsourakis M, Bushell W, Iyer V, Mujica AO, Thomas M, Harrow J, Cox T, Jackson D, Severin J, Biggs P, Fu J, Nefedov M, de Jong PJ, Stewart AF, Bradley A (Jun 2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature. 474 (7351): 337–42. doi:10.1038/nature10163. PMC 3572410. PMID 21677750.
^ Dolgin E (Jun 2011). "Mouse library set to be knockout". Nature. 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718. S2CID 39281705.
^ Collins FS, Rossant J, Wurst W (Jan 2007). "A mouse for all reasons". Cell. 128 (1): 9–13. doi:10.1016/j.cell.2006.12.018. PMID 17218247. S2CID 18872015.
^ van der Weyden L, White JK, Adams DJ, Logan DW (2011). "The mouse genetics toolkit: revealing function and mechanism". Genome Biology. 12 (6): 224. doi:10.1186/gb-2011-12-6-224. PMC 3218837. PMID 21722353.
^ Hughes-Davies L, Huntsman D, Ruas M, Fuks F, Bye J, Chin SF, Milner J, Brown LA, Hsu F, Gilks B, Nielsen T, Schulzer M, Chia S, Ragaz J, Cahn A, Linger L, Ozdag H, Cattaneo E, Jordanova ES, Schuuring E, Yu DS, Venkitaraman A, Ponder B, Doherty A, Aparicio S, Bentley D, Theillet C, Ponting CP, Caldas C, Kouzarides T (Nov 2003). "EMSY links the BRCA2 pathway to sporadic breast and ovarian cancer". Cell. 115 (5): 523–35. doi:10.1016/s0092-8674(03)00930-9. PMID 14651845. S2CID 18911371.
^ ^a ^b Nielsen AL, Oulad-Abdelghani M, Ortiz JA, Remboutsika E, Chambon P, Losson R (Apr 2001). "Heterochromatin formation in mammalian cells: interaction between histones and HP1 proteins". Molecular Cell. 7 (4): 729–39. doi:10.1016/S1097-2765(01)00218-0. PMID 11336697.
^ Aagaard L, Laible G, Selenko P, Schmid M, Dorn R, Schotta G, Kuhfittig S, Wolf A, Lebersorger A, Singh PB, Reuter G, Jenuwein T (Apr 1999). "Functional mammalian homologues of the Drosophila PEV-modifier Su(var)3-9 encode centromere-associated proteins which complex with the heterochromatin component M31". The EMBO Journal. 18 (7): 1923–38. doi:10.1093/emboj/18.7.1923. PMC 1171278. PMID 10202156.

External links[]

CBX1+protein,+human at the US National Library of Medicine Medical Subject Headings (MeSH)
Human CBX1 genome location and CBX1 gene details page in the UCSC Genome Browser.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

[refGRCh38Ensembl-1] GRCh38: Ensembl release 89: ENSG00000108468 - Ensembl, May 2017

[refGRCm38Ensembl-2] GRCm38: Ensembl release 89: ENSMUSG00000018666 - Ensembl, May 2017

[3] "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[4] "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.

[pmid9169582-5] Furuta K, Chan EK, Kiyosawa K, Reimer G, Luderschmidt C, Tan EM (Jun 1997). "Heterochromatin protein HP1Hsbeta (p25beta) and its localization with centromeres in mitosis". Chromosoma. 106 (1): 11–9. doi:10.1007/s004120050219. PMID 9169582. S2CID 33460511.

[entrez-6] "Entrez Gene: CBX1 chromobox homolog 1 (HP1 beta homolog Drosophila )".

[Indirect_calorimetry-7] "Indirect calorimetry data for Cbx1". Wellcome Trust Sanger Institute.

[mgp_reference-8] Gerdin AK (2010). "The Sanger Mouse Genetics Programme: High throughput characterisation of knockout mice". Acta Ophthalmologica. 88 (S248). doi:10.1111/j.1755-3768.2010.4142.x. S2CID 85911512.

[9] Mouse Resources Portal, Wellcome Trust Sanger Institute.

[allele_ref-10] "International Knockout Mouse Consortium". Archived from the original on 2012-03-20. Retrieved 2012-01-05.

[mgi_allele_ref-11] "Mouse Genome Informatics".

[pmid21677750-12] Skarnes WC, Rosen B, West AP, Koutsourakis M, Bushell W, Iyer V, Mujica AO, Thomas M, Harrow J, Cox T, Jackson D, Severin J, Biggs P, Fu J, Nefedov M, de Jong PJ, Stewart AF, Bradley A (Jun 2011). "A conditional knockout resource for the genome-wide study of mouse gene function". Nature. 474 (7351): 337–42. doi:10.1038/nature10163. PMC 3572410. PMID 21677750.

[mouse_library-13] Dolgin E (Jun 2011). "Mouse library set to be knockout". Nature. 474 (7351): 262–3. doi:10.1038/474262a. PMID 21677718. S2CID 39281705.

[mouse_for_all_reasons-14] Collins FS, Rossant J, Wurst W (Jan 2007). "A mouse for all reasons". Cell. 128 (1): 9–13. doi:10.1016/j.cell.2006.12.018. PMID 17218247. S2CID 18872015.

[pmid21722353-15] van der Weyden L, White JK, Adams DJ, Logan DW (2011). "The mouse genetics toolkit: revealing function and mechanism". Genome Biology. 12 (6): 224. doi:10.1186/gb-2011-12-6-224. PMC 3218837. PMID 21722353.

[pmid14651845-16] Hughes-Davies L, Huntsman D, Ruas M, Fuks F, Bye J, Chin SF, Milner J, Brown LA, Hsu F, Gilks B, Nielsen T, Schulzer M, Chia S, Ragaz J, Cahn A, Linger L, Ozdag H, Cattaneo E, Jordanova ES, Schuuring E, Yu DS, Venkitaraman A, Ponder B, Doherty A, Aparicio S, Bentley D, Theillet C, Ponting CP, Caldas C, Kouzarides T (Nov 2003). "EMSY links the BRCA2 pathway to sporadic breast and ovarian cancer". Cell. 115 (5): 523–35. doi:10.1016/s0092-8674(03)00930-9. PMID 14651845. S2CID 18911371.

[pmid11336697-17] Nielsen AL, Oulad-Abdelghani M, Ortiz JA, Remboutsika E, Chambon P, Losson R (Apr 2001). "Heterochromatin formation in mammalian cells: interaction between histones and HP1 proteins". Molecular Cell. 7 (4): 729–39. doi:10.1016/S1097-2765(01)00218-0. PMID 11336697.

[pmid10202156-18] Aagaard L, Laible G, Selenko P, Schmid M, Dorn R, Schotta G, Kuhfittig S, Wolf A, Lebersorger A, Singh PB, Reuter G, Jenuwein T (Apr 1999). "Functional mammalian homologues of the Drosophila PEV-modifier Su(var)3-9 encode centromere-associated proteins which complex with the heterochromatin component M31". The EMBO Journal. 18 (7): 1923–38. doi:10.1093/emboj/18.7.1923. PMC 1171278. PMID 10202156.

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CBX1

Contents

Function[]

Model organisms[]

Interactions[]

See also[]

References[]

Further reading[]

External links[]