HOPX

Protein-coding gene in humans
HOPX
Available structures
PDBOrtholog search: PDBe RCSB
List of PDB id codes

1UHS, 2HI3

Identifiers
AliasesHOPX, CAMEO, HOD, HOP, LAGY, NECC1, OB1, SMAP31, TOTO, HOP homeobox
External IDsOMIM: 607275 MGI: 1916782 HomoloGene: 15859 GeneCards: HOPX
Gene location (Human)
Chromosome 4 (human)
Chr.Chromosome 4 (human)[1]
Chromosome 4 (human)
Genomic location for HOPX
Genomic location for HOPX
Band4q12Start56,647,988 bp[1]
End56,681,899 bp[1]
Gene location (Mouse)
Chromosome 5 (mouse)
Chr.Chromosome 5 (mouse)[2]
Chromosome 5 (mouse)
Genomic location for HOPX
Genomic location for HOPX
Band5|5 C3.3Start77,234,835 bp[2]
End77,262,968 bp[2]
RNA expression pattern
Bgee
HumanMouse (ortholog)
Top expressed in
  • corpus epididymis

  • human penis

  • oral cavity

  • skin of abdomen

  • vulva

  • right lung

  • upper lobe of left lung

  • gums

  • body of tongue

  • amniotic fluid
Top expressed in
  • right lung lobe

  • left lung

  • superior surface of tongue

  • right ventricle

  • left lung lobe

  • esophagus

  • interventricular septum

  • corneal stroma

  • hair follicle

  • lip
More reference expression data
BioGPS
More reference expression data
Gene ontology
Molecular function
  • DNA binding
  • protein binding
  • DNA-binding transcription factor activity, RNA polymerase II-specific
Cellular component
  • cytoplasm
  • nucleus
Biological process
  • regulation of transcription by RNA polymerase II
  • negative regulation of cell differentiation
  • multicellular organism development
  • regulation of transcription, DNA-templated
  • transcription, DNA-templated
  • trophectodermal cell differentiation
  • chaperone-mediated protein complex assembly
  • cell differentiation
Sources:Amigo / QuickGO
Orthologs
SpeciesHumanMouse
Entrez

84525

74318

Ensembl

ENSG00000171476

ENSMUSG00000059325

UniProt

Q9BPY8

Q8R1H0

RefSeq (mRNA)

NM_001145459
NM_001145460
NM_032495
NM_139211
NM_139212

NM_001159900
NM_001159901
NM_175606

RefSeq (protein)

NP_001138931
NP_001138932
NP_115884
NP_631957
NP_631958

NP_001153372
NP_001153373
NP_783199

Location (UCSC)Chr 4: 56.65 – 56.68 MbChr 5: 77.23 – 77.26 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse

Homeodomain-only protein is a protein that in humans is encoded by the HOPX gene.[5] It is an important regulator of cardiac development[6] and a marker of hippocampal neural stem cells.[7][8]

Function

The protein encoded by this gene is a homeodomain protein that lacks certain conserved residues required for DNA binding. It was reported that choriocarcinoma cell lines and tissues failed to express this gene, which suggested the possible involvement of this gene in malignant conversion of placental trophoblasts. Studies in mice suggested that this protein may interact with serum response factor (SRF) and modulate SRF-dependent cardiac-specific gene expression and cardiac development.[6] Multiple alternatively spliced transcript variants encoding the same protein have been observed, the full-length natures of only some have been determined.[5]

References

  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000171476 – Ensembl, May 2017
  2. ^ a b c GRCm38: Ensembl release 89: ENSMUSG00000059325 – 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.
  5. ^ a b "Entrez Gene: HOP homeodomain-only protein".
  6. ^ a b Chen F, Kook H, Milewski R, Gitler AD, Lu MM, Li J, Nazarian R, Schnepp R, Jen K, Biben C, Runke G, Mackay JP, Novotny J, Schwartz RJ, Harvey RP, Mullins MC, Epstein JA (September 2002). "Hop Is an Unusual Homeobox Gene that Modulates Cardiac Development". Cell. 110 (6): 713–723. doi:10.1016/S0092-8674(02)00932-7. PMID 12297045. S2CID 12189105.
  7. ^ Li D, Takeda N, Jain R, Manderfield LJ, Liu F, Li L, Anderson SA, Epstein JA (November 2015). "Hopx distinguishes hippocampal from lateral ventricle neural stem cells". Stem Cell Research. 15 (3): 522–529. doi:10.1016/j.scr.2015.09.015. PMC 4704104. PMID 26451648.
  8. ^ Berg DA, Su Y, Jimenez-Cyrus D, Patel A, Huang N, Morizet D, Lee S, Shah R, Ringeling FR, Jain R, Epstein JA, Wu QF, Canzar S, Ming GL, Song H, Bond AM (April 2019). "A Common Embryonic Origin of Stem Cells Drives Developmental and Adult Neurogenesis". Cell. 177 (3): 654–668.e15. doi:10.1016/j.cell.2019.02.010. PMC 6496946. PMID 30929900.

Further reading

  • Kook H, Epstein JA (October 2003). "Hopping to the beat. Hop regulation of cardiac gene expression". Trends in Cardiovascular Medicine. 13 (7): 261–4. doi:10.1016/S1050-1738(03)00107-5. PMID 14522464.
  • Hartley JL, Temple GF, Brasch MA (November 2000). "DNA cloning using in vitro site-specific recombination". Genome Research. 10 (11): 1788–95. doi:10.1101/gr.143000. PMC 310948. PMID 11076863.
  • Asanoma K, Matsuda T, Kondo H, Kato K, Kishino T, Niikawa N, Wake N, Kato H (January 2003). "NECC1, a candidate choriocarcinoma suppressor gene that encodes a homeodomain consensus motif". Genomics. 81 (1): 15–25. doi:10.1016/S0888-7543(02)00011-3. PMID 12573257.
  • Chen Y, Petersen S, Pacyna-Gengelbach M, Pietas A, Petersen I (2003). "Identification of a novel homeobox-containing gene, LAGY, which is downregulated in lung cancer". Oncology. 64 (4): 450–8. doi:10.1159/000070306. PMID 12759545. S2CID 3205741.
  • Kook H, Lepore JJ, Gitler AD, Lu MM, Wing-Man Yung W, Mackay J, Zhou R, Ferrari V, Gruber P, Epstein JA (September 2003). "Cardiac hypertrophy and histone deacetylase-dependent transcriptional repression mediated by the atypical homeodomain protein Hop". The Journal of Clinical Investigation. 112 (6): 863–71. doi:10.1172/JCI19137. PMC 193673. PMID 12975471.
  • Adu J, Leong FT, Smith NR, Leek JP, Markham AF, Robinson PA, Mighell AJ (December 2002). "Expression of mOb1, a novel atypical 73 amino acid K50-homeodomain protein, during mouse development". Mechanisms of Development. 119. 119 (Suppl 1): S43-7. doi:10.1016/S0925-4773(03)00090-X. PMID 14516659. S2CID 11648378.
  • Lemaire F, Millon R, Muller D, Rabouel Y, Bracco L, Abecassis J, Wasylyk B (July 2004). "Loss of HOP tumour suppressor expression in head and neck squamous cell carcinoma". British Journal of Cancer. 91 (2): 258–61. doi:10.1038/sj.bjc.6601952. PMC 2409811. PMID 15213722.
  • Pauws E, Sijmons GG, Yaka C, Ris-Stalpers C (July 2004). "A novel homeobox gene overexpressed in thyroid carcinoma". Thyroid. 14 (7): 500–5. doi:10.1089/1050725041517020. PMID 15307938.
  • Toruner GA, Ulger C, Alkan M, Galante AT, Rinaggio J, Wilk R, Tian B, Soteropoulos P, Hameed MR, Schwalb MN, Dermody JJ (October 2004). "Association between gene expression profile and tumor invasion in oral squamous cell carcinoma". Cancer Genetics and Cytogenetics. 154 (1): 27–35. doi:10.1016/j.cancergencyto.2004.01.026. PMID 15381369.
  • Asanoma K, Kato H, Inoue T, Matsuda T, Wake N (August 2004). "Analysis of a candidate gene associated with growth suppression of choriocarcinoma and differentiation of trophoblasts". The Journal of Reproductive Medicine. 49 (8): 617–26. PMID 15457851.
  • Wiemann S, Arlt D, Huber W, Wellenreuther R, Schleeger S, Mehrle A, Bechtel S, Sauermann M, Korf U, Pepperkok R, Sültmann H, Poustka A (October 2004). "From ORFeome to biology: a functional genomics pipeline". Genome Research. 14 (10B): 2136–44. doi:10.1101/gr.2576704. PMC 528930. PMID 15489336.
  • Mehrle A, Rosenfelder H, Schupp I, del Val C, Arlt D, Hahne F, Bechtel S, Simpson J, Hofmann O, Hide W, Glatting KH, Huber W, Pepperkok R, Poustka A, Wiemann S (January 2006). "The LIFEdb database in 2006". Nucleic Acids Research. 34 (Database issue): D415-8. doi:10.1093/nar/gkj139. PMC 1347501. PMID 16381901.
  • Kook H, Yung WW, Simpson RJ, Kee HJ, Shin S, Lowry JA, Loughlin FE, Yin Z, Epstein JA, Mackay JP (September 2006). "Analysis of the structure and function of the transcriptional coregulator HOP". Biochemistry. 45 (35): 10584–90. doi:10.1021/bi060641s. PMID 16939210.
  • Kee HJ, Kim JR, Nam KI, Park HY, Shin S, Kim JC, Shimono Y, Takahashi M, Jeong MH, Kim N, Kim KK, Kook H (March 2007). "Enhancer of polycomb1, a novel homeodomain only protein-binding partner, induces skeletal muscle differentiation". The Journal of Biological Chemistry. 282 (10): 7700–9. doi:10.1074/jbc.M611198200. PMID 17192267.
  • Americo TA, Chiarini LB, Linden R (June 2007). "Signaling induced by hop/STI-1 depends on endocytosis". Biochemical and Biophysical Research Communications. 358 (2): 620–5. doi:10.1016/j.bbrc.2007.04.202. PMID 17498662.

External links

  • v
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  • 2hi3: Solution structure of the homeodomain-only protein HOP
    2hi3: Solution structure of the homeodomain-only protein HOP
  • v
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  • e
(1) Basic domains
(1.1) Basic leucine zipper (bZIP)
(1.2) Basic helix-loop-helix (bHLH)
Group A
Group B
Group C
bHLH-PAS
Group D
Group E
Group F
bHLH-COE
(1.3) bHLH-ZIP
(1.4) NF-1
(1.5) RF-X
(1.6) Basic helix-span-helix (bHSH)
(2) Zinc finger DNA-binding domains
(2.1) Nuclear receptor (Cys4)
subfamily 1
subfamily 2
subfamily 3
subfamily 4
subfamily 5
subfamily 6
subfamily 0
(2.2) Other Cys4
(2.3) Cys2His2
(2.4) Cys6
(2.5) Alternating composition
(2.6) WRKY
(3) Helix-turn-helix domains
(3.1) Homeodomain
Antennapedia
ANTP class
protoHOX
Hox-like
metaHOX
NK-like
other
(3.2) Paired box
(3.3) Fork head / winged helix
(3.4) Heat shock factors
(3.5) Tryptophan clusters
(3.6) TEA domain
  • transcriptional enhancer factor
(4) β-Scaffold factors with minor groove contacts
(4.1) Rel homology region
(4.2) STAT
(4.3) p53-like
(4.4) MADS box
(4.6) TATA-binding proteins
(4.7) High-mobility group
(4.9) Grainyhead
(4.10) Cold-shock domain
(4.11) Runt
(0) Other transcription factors
(0.2) HMGI(Y)
(0.3) Pocket domain
(0.5) AP-2/EREBP-related factors
(0.6) Miscellaneous
see also transcription factor/coregulator deficiencies

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

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