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{{Underlinked|date=May 2016}}
{{Underlinked|date=May 2016}}
{{Infobox_gene}}
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'''Beta-crystallin B1''' is a [[protein]] that in humans is encoded by the ''CRYBB1'' [[gene]].<ref name="pmid8575764">{{cite journal | vauthors = Hulsebos TJ, Gilbert DJ, Delattre O, Smink LJ, Dunham I, Westerveld A, Thomas G, Jenkins NA, Copeland NG | title = Assignment of the beta B1 crystallin gene (CRYBB1) to human chromosome 22 and mouse chromosome 5 | journal = Genomics | volume = 29 | issue = 3 | pages = 712–8 |date=Mar 1996 | pmid = 8575764 | pmc =  | doi = 10.1006/geno.1995.9947 }}</ref><ref name="pmid12360425">{{cite journal | vauthors = Mackay DS, Boskovska OB, Knopf HL, Lampi KJ, Shiels A | title = A nonsense mutation in CRYBB1 associated with autosomal dominant cataract linked to human chromosome 22q | journal = Am J Hum Genet | volume = 71 | issue = 5 | pages = 1216–21 |date=Oct 2002 | pmid = 12360425 | pmc = 385100 | doi = 10.1086/344212 }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: CRYBB1 crystallin, beta B1| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=1414| accessdate = }}</ref>
'''Beta-crystallin B1''' is a [[protein]] that in humans is encoded by the ''CRYBB1'' [[gene]].<ref name="pmid8575764">{{cite journal | vauthors = Hulsebos TJ, Gilbert DJ, Delattre O, Smink LJ, Dunham I, Westerveld A, Thomas G, Jenkins NA, Copeland NG | title = Assignment of the beta B1 crystallin gene (CRYBB1) to human chromosome 22 and mouse chromosome 5 | journal = Genomics | volume = 29 | issue = 3 | pages = 712–8 |date=Mar 1996 | pmid = 8575764 | pmc =  | doi = 10.1006/geno.1995.9947 }}</ref><ref name="entrez">{{cite web | title = Entrez Gene: CRYBB1 crystallin, beta B1| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=1414| accessdate = }}</ref> Variants in CRYBB1 are associated with autosomal dominant [[congenital cataract]]. <ref name="pmid12360425">{{cite journal | vauthors = Mackay DS, Boskovska OB, Knopf HL, Lampi KJ, Shiels A | title = A nonsense mutation in CRYBB1 associated with autosomal dominant cataract linked to human chromosome 22q | journal = Am J Hum Genet | volume = 71 | issue = 5 | pages = 1216–21 |date=Oct 2002 | pmid = 12360425 | pmc = 385100 | doi = 10.1086/344212 }}</ref><ref name="pmid28272538">{{cite journal | vauthors = Siggs OM, Javadiyan S, Sharma S, Souzeau E, Lower KM, Taranath DA, Black J, Pater J, Willoughby JG, Burdon KP, Craig JE |display-authors = 6| title = Partial duplication of the CRYBB1-CRYBA4 locus is associated with autosomal dominant congenital cataract | journal = Eur. J. Hum. Genet. | volume = 25 | issue = 6 | pages = 711–718 | date = June 2017 | pmid = 28272538 | pmc = 5477362 | doi = 10.1038/ejhg.2017.33 }}</ref>


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| summary_text = Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Beta-crystallins, the most heterogeneous, differ by the presence of the C-terminal extension (present in the basic group, none in the acidic group). Beta-crystallins form aggregates of different sizes and are able to self-associate to form dimers or to form heterodimers with other beta-crystallins. This gene, a beta basic group member, undergoes extensive cleavage at its N-terminal extension during lens maturation. It is also a member of a gene cluster with beta-A4, beta-B2, and beta-B3.<ref name="entrez" />
| summary_text = Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their [[Cell nucleus|nuclei]] during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Beta-crystallins, the most heterogeneous, differ by the presence of the C-terminal extension (present in the basic group, none in the acidic group). Beta-crystallins form aggregates of different sizes and are able to self-associate to form dimers or to form heterodimers with other beta-crystallins. This gene, a beta basic group member, undergoes extensive cleavage at its [[N-terminal]] extension during lens maturation. It is also a member of a gene cluster with beta-A4, beta-B2, and beta-B3.<ref name="entrez" />
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Latest revision as of 12:26, 9 January 2019

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Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez

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Ensembl

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UniProt

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RefSeq (mRNA)

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Location (UCSC)n/an/a
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Wikidata
View/Edit Human

Beta-crystallin B1 is a protein that in humans is encoded by the CRYBB1 gene.[1][2] Variants in CRYBB1 are associated with autosomal dominant congenital cataract. [3][4]

Crystallins are separated into two classes: taxon-specific, or enzyme, and ubiquitous. The latter class constitutes the major proteins of vertebrate eye lens and maintains the transparency and refractive index of the lens. Since lens central fiber cells lose their nuclei during development, these crystallins are made and then retained throughout life, making them extremely stable proteins. Mammalian lens crystallins are divided into alpha, beta, and gamma families; beta and gamma crystallins are also considered as a superfamily. Alpha and beta families are further divided into acidic and basic groups. Seven protein regions exist in crystallins: four homologous motifs, a connecting peptide, and N- and C-terminal extensions. Beta-crystallins, the most heterogeneous, differ by the presence of the C-terminal extension (present in the basic group, none in the acidic group). Beta-crystallins form aggregates of different sizes and are able to self-associate to form dimers or to form heterodimers with other beta-crystallins. This gene, a beta basic group member, undergoes extensive cleavage at its N-terminal extension during lens maturation. It is also a member of a gene cluster with beta-A4, beta-B2, and beta-B3.[2]

References

  1. ↑ Hulsebos TJ, Gilbert DJ, Delattre O, Smink LJ, Dunham I, Westerveld A, Thomas G, Jenkins NA, Copeland NG (Mar 1996). "Assignment of the beta B1 crystallin gene (CRYBB1) to human chromosome 22 and mouse chromosome 5". Genomics. 29 (3): 712–8. doi:10.1006/geno.1995.9947. PMID 8575764.
  2. ↑ 2.0 2.1 "Entrez Gene: CRYBB1 crystallin, beta B1".
  3. ↑ Mackay DS, Boskovska OB, Knopf HL, Lampi KJ, Shiels A (Oct 2002). "A nonsense mutation in CRYBB1 associated with autosomal dominant cataract linked to human chromosome 22q". Am J Hum Genet. 71 (5): 1216–21. doi:10.1086/344212. PMC 385100. PMID 12360425.
  4. ↑ Siggs OM, Javadiyan S, Sharma S, Souzeau E, Lower KM, Taranath DA, et al. (June 2017). "Partial duplication of the CRYBB1-CRYBA4 locus is associated with autosomal dominant congenital cataract". Eur. J. Hum. Genet. 25 (6): 711–718. doi:10.1038/ejhg.2017.33. PMC 5477362. PMID 28272538.

External links

Further reading



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