CRYGB

Crystallin, gamma B, also known as CRYGB, is a human gene.cite web | title = Entrez Gene: CRYGB crystallin, gamma B| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=1419| accessdate = ]

PBB_Summary
section_title =
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. Gamma-crystallins are a homogeneous group of highly symmetrical, monomeric proteins typically lacking connecting peptides and terminal extensions. They are differentially regulated after early development. Four gamma-crystallin genes (gamma-A through gamma-D) and three pseudogenes (gamma-E, gamma-F, gamma-G) are tandemly organized in a genomic segment as a gene cluster. Whether due to aging or mutations in specific genes, gamma-crystallins have been involved in cataract formation.cite web | title = Entrez Gene: CRYGB crystallin, gamma B| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=1419| accessdate = ]

References

Further reading

PBB_Further_reading
citations =
*cite journal | author=Graw J |title=The crystallins: genes, proteins and diseases. |journal=Biol. Chem. |volume=378 |issue= 11 |pages= 1331–48 |year= 1998 |pmid= 9426193 |doi=
*cite journal | author=Slingsby C, Clout NJ |title=Structure of the crystallins. |journal=Eye (London, England) |volume=13 ( Pt 3b) |issue= |pages= 395–402 |year= 2000 |pmid= 10627816 |doi=
*cite journal | author=Hearne CM, Todd JA |title=Trinucleotide repeat polymorphism at the CRYG1 locus. |journal=Nucleic Acids Res. |volume=19 |issue= 19 |pages= 5450 |year= 1991 |pmid= 1923840 |doi=
*cite journal | author=Brakenhoff RH, Aarts HJ, Reek FH, "et al." |title=Human gamma-crystallin genes. A gene family on its way to extinction. |journal=J. Mol. Biol. |volume=216 |issue= 3 |pages= 519–32 |year= 1991 |pmid= 2258929 |doi=
*cite journal | author=den Dunnen JT, van Neck JW, Cremers FP, "et al." |title=Nucleotide sequence of the rat gamma-crystallin gene region and comparison with an orthologous human region. |journal=Gene |volume=78 |issue= 2 |pages= 201–13 |year= 1989 |pmid= 2777080 |doi=
*cite journal | author=Shiloh Y, Donlon T, Bruns G, "et al." |title=Assignment of the human gamma-crystallin gene cluster (CRYG) to the long arm of chromosome 2, region q33-36. |journal=Hum. Genet. |volume=73 |issue= 1 |pages= 17–9 |year= 1986 |pmid= 3011643 |doi=
*cite journal | author=Meakin SO, Du RP, Tsui LC, Breitman ML |title=Gamma-crystallins of the human eye lens: expression analysis of five members of the gene family. |journal=Mol. Cell. Biol. |volume=7 |issue= 8 |pages= 2671–9 |year= 1987 |pmid= 3670288 |doi=
*cite journal | author=den Dunnen JT, Moormann RJ, Cremers FP, Schoenmakers JG |title=Two human gamma-crystallin genes are linked and riddled with Alu-repeats. |journal=Gene |volume=38 |issue= 1-3 |pages= 197–204 |year= 1986 |pmid= 4065573 |doi=
*cite journal | author=Bonaldo MF, Lennon G, Soares MB |title=Normalization and subtraction: two approaches to facilitate gene discovery. |journal=Genome Res. |volume=6 |issue= 9 |pages= 791–806 |year= 1997 |pmid= 8889548 |doi=
*cite journal | author=Héon E, Priston M, Schorderet DF, "et al." |title=The gamma-crystallins and human cataracts: a puzzle made clearer. |journal=Am. J. Hum. Genet. |volume=65 |issue= 5 |pages= 1261–7 |year= 1999 |pmid= 10521291 |doi=
*cite journal | author=Santhiya ST, Shyam Manohar M, Rawlley D, "et al." |title=Novel mutations in the gamma-crystallin genes cause autosomal dominant congenital cataracts. |journal=J. Med. Genet. |volume=39 |issue= 5 |pages= 352–8 |year= 2002 |pmid= 12011157 |doi=
*cite journal | author=MacCoss MJ, McDonald WH, Saraf A, "et al." |title=Shotgun identification of protein modifications from protein complexes and lens tissue. |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 12 |pages= 7900–5 |year= 2002 |pmid= 12060738 |doi= 10.1073/pnas.122231399
*cite journal | author=Strausberg RL, Feingold EA, Grouse LH, "et al." |title=Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences. |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 26 |pages= 16899–903 |year= 2003 |pmid= 12477932 |doi= 10.1073/pnas.242603899
*cite journal | author=Salim A, Zaidi ZH |title=Homology models of human gamma-crystallins: structural study of the extensive charge network in gamma-crystallins. |journal=Biochem. Biophys. Res. Commun. |volume=300 |issue= 3 |pages= 624–30 |year= 2003 |pmid= 12507494 |doi=
*cite journal | author=Nandrot E, Slingsby C, Basak A, "et al." |title=Gamma-D crystallin gene (CRYGD) mutation causes autosomal dominant congenital cerulean cataracts. |journal=J. Med. Genet. |volume=40 |issue= 4 |pages= 262–7 |year= 2003 |pmid= 12676897 |doi=
*cite journal | author=Lapko VN, Smith DL, Smith JB |title=Methylation and carbamylation of human gamma-crystallins. |journal=Protein Sci. |volume=12 |issue= 8 |pages= 1762–74 |year= 2004 |pmid= 12876325 |doi=
*cite journal | author=Salim A, Bano A, Zaidi ZH |title=Prediction of possible sites for posttranslational modifications in human gamma crystallins: effect of glycation on the structure of human gamma-B-crystallin as analyzed by molecular modeling. |journal=Proteins |volume=53 |issue= 2 |pages= 162–73 |year= 2004 |pmid= 14517968 |doi= 10.1002/prot.10493
*cite journal | author=Gerhard DS, Wagner L, Feingold EA, "et al." |title=The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). |journal=Genome Res. |volume=14 |issue= 10B |pages= 2121–7 |year= 2004 |pmid= 15489334 |doi= 10.1101/gr.2596504

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