Abstract
The guanylate cyclase-activating proteins (GCAPs) are Ca2+-binding proteins of the calmodulin (CaM) gene superfamily that function in the regulation of photoreceptor guanylate cyclases (GCs). In the mammalian retina, two GCAPs (GCAP 1-2) and two transmembrane GCs have been identified as part of a complex regulatory system responsive to fluctuating levels of free Ca2+. A third GCAP, GCAP3, is expressed in human and zebrafish (Danio rerio) retinas, and a guanylate cyclase-inhibitory protein (GCIP) has been shown to be present in frog cones. To explore the diversity of GCAPs in more detail, we searched the pufferfish (Fugu rubripes) and zebrafish (Danio rerio) genomes for GCAP-related gene sequences (fuGCAPs and zGCAPs, respectively) and found that at least five additional GCAPs (GCAP4-8) are predicted to be present in these species. We identified genomic contigs encoding fuGCAPl-8, fuGCIP, zGCAPl-5, zGCAP7 and zGCIP. We describe cloning, expression and localization of three novel GCAPs present in the zebrafish retina (zGCAP4, zGCAP5, and zGCAP7). The results show that recombinant zGCAP4 stimulated bovine rod outer segment GC in a Ca2+-dependent manner. RT-PCR with zGCAP specific primers showed specific expression of zGCAPs and zGCIP in the retina, while zGCAPl mRNA is also present in the brain. In situ hybridization with anti-sense zGCAP4, zGCAP5 and zGCAP7 RNA showed exclusive expression in zebrafish cone photoreceptors. The presence of at least eight GCAP genes suggests an unexpected diversity within this subfamily of Ca2+-binding proteins in the teleost retina, and suggests additional functions for GCAPs apart from stimulation of GC. Based on genome searches and EST analyses, the mouse and human genomes do not harbor GCAP4-8 or GCIP genes.






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References
SF Altschul W Gish W Miller EW Myers DJ Lipman (1990) ArticleTitleBasic local alignment search tool J Mol Biol 215 403–410 Occurrence Handle10.1006/jmbi.1990.9999 Occurrence Handle1:CAS:528:DyaK3MXitVGmsA%3D%3D Occurrence Handle2231712
JB Ames AM Dizhoor M Ikura K Palczewski L Stryer (1999) ArticleTitleThree-dimensional structure of guanylyl cyclase activating protein-2, a calcium-sensitive modulator of photoreceptor guanylyl cyclases J Biol Chem 274 19329–19337 Occurrence Handle1:CAS:528:DyaK1MXksVWltbs%3D Occurrence Handle10383444
S Aparicio J Chapman E Stupka N Putnam JM Chia P Dehal A Christoffels S Rash S Hoon A Smit MD Gelpke J Roach T Oh IY Ho M Wong C Detter F Verhoef P Predki A Tay S Lucas P Richardson SF Smith MS Clark YJ Edwards N Doggett A Zharkikh SV Tavtigian D Pruss M Barnstead C Evans H Baden J Powell G Glusman L Rowen L Hood YH Tan G Elgar T Hawkins B Venkatesh D Rokhsar S Brenner (2002) ArticleTitleWhole-genome shotgun assembly and analysis of the genome of Fugu rubripes Science 297 1301–1310 Occurrence Handle10.1126/science.1072104 Occurrence Handle1:CAS:528:DC%2BD38Xms1ejtr8%3D Occurrence Handle12142439
ML Applebury MP Antoch LC Baxter LL Chun JD Falk F Farhangfar K Kage MG Krzystolik LA Lyass JT Robbins (2000) ArticleTitleThe murine cone photoreceptor: A single cone type expresses both S and M opsins with retinal spatial patterning Neuron 27 513–523 Occurrence Handle1:CAS:528:DC%2BD3cXnt12nt7k%3D Occurrence Handle11055434
Y Asaoka H Mano D Kojima Y Fukada (2002) ArticleTitlePineal expression-promoting element (PIPE), a cis-acting element, directs pineal-specific gene expression in zebrafish Proc Natl Acad Sci USA 99 15456–15461 Occurrence Handle1:CAS:528:DC%2BD3sXjvVKn Occurrence Handle12438694
T Branchek R Bremiller (1984) ArticleTitleThe development of photoreceptors in the zebrafish, Brachydanio rerio I. Structure J Comp Neurol 224 107–115 Occurrence Handle1:STN:280:BiuC1cnit1M%3D Occurrence Handle6715574
A Chinen T Hamaoka Y Yamada S Kawamura (2003) ArticleTitleGene duplication and spectral diversification of cone visual pigments of zebrafish Genetics 163 663–675 Occurrence Handle1:CAS:528:DC%2BD3sXislWjtbY%3D Occurrence Handle12618404
N Cuenca S Lopez K Howes H Kolb (1998) ArticleTitleThe localization of guanylyl cyclase-activating proteins in the mammalian retina Invest Ophthalmol Vis Sci 39 1243–1250 Occurrence Handle1:STN:280:DyaK1c3otFeqtw%3D%3D Occurrence Handle9620085
AM Dizhoor DG Lowe EV Olshevskaya RP Laura JB Hurley (1994) ArticleTitleThe human photoreceptor membrane guanylyl cyclase, RetGC, is present in outer segments and is regulated by calcium and a soluble activator Neuron 12 1345–1352 Occurrence Handle1:CAS:528:DyaK2cXlsFeqt70%3D Occurrence Handle7912093
AM Dizhoor EV Olshevskaya WJ Henzel SC Wong JT Stults I Ankoudinova JB Hurley (1995) ArticleTitleCloning, sequencing, and expression of a 24-kDa Ca2+-binding protein activating photoreceptor guanylyl cyclase J Biol Chem 270 25200–25206 Occurrence Handle1:CAS:528:DyaK2MXovFWmt7c%3D Occurrence Handle7559656
J Felsenstein (2002) PHYLIP (phylogeny inference package), version 3.6. Distributed by the author, Department of Genetics University of Washington Seattle
DL Garbers DG Lowe (1994) ArticleTitleGuanylyl cyclase receptors J Biol Chem 269 30741–30744 Occurrence Handle1:CAS:528:DyaK2cXmslCqsrs%3D Occurrence Handle7982997
WA Gorczyca MP Gray-Keller PB Detwiler K Palczewski (1994) ArticleTitlePurification and physiological evaluation of a guanylate cyclase activating protein from retinal rods Proc Natl Acad Sci USA 91 4014–4018 Occurrence Handle1:CAS:528:DyaK2cXksl2gur8%3D Occurrence Handle7909609
WA Gorczyca AS Polans I Surgucheva I Subbaraya W Baehr K Palczewski (1995) ArticleTitleGuanylyl cyclase activating protein: A calcium-sensitive regulator of phototransduction J Biol Chem 270 22029–22036 Occurrence Handle1:CAS:528:DyaK2MXotFait7o%3D Occurrence Handle7665624
F Haeseleer I Sokal N Li M Pettenati N Rao D Bronson R Wechter W Baehr K Palczewski (1999) ArticleTitleMolecular characterization of a third member of the guanylyl cyclase-activating protein subfamily J Biol Chem 274 6526–6535 Occurrence Handle10.1074/jbc.274.10.6526 Occurrence Handle1:CAS:528:DyaK1MXhs1Cjsrk%3D Occurrence Handle10037746
T Harumi T Watanabe T Yamamoto Y Tanabe N Suzuki (2003) ArticleTitleExpression of membrane-bound and soluble guanylyl cyclase mRNAs in embryonic and adult retina of the medaka fish Oryzias latipes Zool Sci 20 133–140 Occurrence Handle1:CAS:528:DC%2BD3sXjslaisrY%3D Occurrence Handle12655176
O Hisatomi H Honkawa Y Imanishi T Satoh F Tokunaga (1999) ArticleTitleThree kinds of guanylate cyclase expressed in medaka photoreceptor cells in both retina and pineal organ Biochem Biophys Res Commun 255 216–220 Occurrence Handle1:CAS:528:DyaK1MXhsVSiu7o%3D Occurrence Handle10049688
K Howes JD Bronson YL Dang N Li K Zhang C Ruiz B Helekar M Lee I Subbaraya H Kolb J Chen W Baehr (1998) ArticleTitleGene array and expression of mouse retina guanylate cyclase activating proteins 1 and 2 Invest Ophthalmol Vis Sci 39 867–875 Occurrence Handle1:STN:280:DyaK1c3jvFSluw%3D%3D Occurrence Handle9579466
KA Howes ME Pennesi I Sokal J Church-Kopish B Schmidt P Margolis J Frederick F Rieke K Palczewski SM Wu PB Detwiler W Baehr (2002) ArticleTitleGCAP1 rescues rod photoreceptor response in GCAP1/GCAP2 knockout mice EMBO J 21 1545–1554 Occurrence Handle10.1093/emboj/21.7.1545 Occurrence Handle1:CAS:528:DC%2BD38XjtVOgtrw%3D Occurrence Handle11927539
Y Imanishi N Li ME Sowa O Lichtarge TG Wensel DA Saperstein W Baehr K Palczewski (2002) ArticleTitleCharacterization of retinal guanylate cyclase-activating protein 3 (GCAP3) from zebrafish to man Eur J Neurosci 15 63–78 Occurrence Handle11860507
S Kachi Y Nishizawa E Olshevskaya A Yamazaki Y Miyake T Wakabayashi A Dizhoor J Usukura (1999) ArticleTitleDetailed localization of photoreceptor guanylate cyclase activating protein-1 and –2 in mammalian retinas using light and electron microscopy Exp Eye Res 68 465–473 Occurrence Handle10.1006/exer.1998.0629 Occurrence Handle1:CAS:528:DyaK1MXit1Sgsrk%3D Occurrence Handle10192804
PM Kainz AR Adolph KY Wong JE Dowling (2003) ArticleTitleLazy eyes zebrafish mutation affects Muller glial cells, compromising photoreceptor function and causing partial blindness J Comp Neurol 463 265–280 Occurrence Handle12820161
T Kusakabe N Suzuki (2001) ArticleTitleA cis-regulatory element essential for photoreceptor cell-specific expression of a medaka retinal guanylyl cyclase gene Dev Genes Evol 211 145–149 Occurrence Handle1:CAS:528:DC%2BD3MXhslyitb8%3D Occurrence Handle11455426
N Li RN Fariss K Zhang A Otto-Bruc F Haeseleer JD Bronson N Qin A Yamazaki I Subbaraya AH Milam K Palczewski W Baehr (1998) ArticleTitleGuanylate cyclase inhibitory protein is a frog retinal Ca2+ binding protein related to mammalian guanylate cyclase activating proteins Eur J Biochem 252 591–599 Occurrence Handle1:CAS:528:DyaK1cXitVWntbo%3D Occurrence Handle9546678
N Li I Sokal JD Bronson K Palczewski W Baehr (2001) ArticleTitleIdentification and functional regions of guanylate cyclase-activating protein 1 (GCAP1) using GCAP1/GCIP chimeras Biol Chem 382 1179–1188 Occurrence Handle1:CAS:528:DC%2BD3MXnslGlt7o%3D Occurrence Handle11592399
O Lichtarge HR Bourne FE Cohen (1996) ArticleTitleEvolutionary conserved Gαβγ binding surfaces support a model of the G protein-receptor complex Proc Natl Acad Sci USA 93 7507–7511 Occurrence Handle10.1073/pnas.93.15.7507 Occurrence Handle1:CAS:528:DyaK28XksFSku7c%3D Occurrence Handle8755504
DG Lowe AM Dizhoor K Liu Q Gu M Spencer R Laura L Lu JB Hurley (1995) ArticleTitleCloning and expression of a second photoreceptor-specific membrane retina guanylyl cyclase (RetGC), RetGC-2 Proc Natl Acad Sci USA 92 5535–5539 Occurrence Handle1:CAS:528:DyaK2MXmtFOgsLw%3D Occurrence Handle7777544
T Maeda A Maeda I Maruyama KI Ogawa Y Kuroki H Sahara N Sato H Ohguro (2001) ArticleTitleMechanisms of photoreceptor cell death in cancer-associated retinopathy Invest Ophthalmol Vis Sci 42 705–712 Occurrence Handle1:STN:280:DC%2BD3M7lt1Cjtw%3D%3D Occurrence Handle11222531
J Malicki (2000) ArticleTitleHarnessing the power of forward genetics—Analysis of neuronal diversity and patterning in the zebrafish retina Trends Neurosci 23 531–541 Occurrence Handle1:CAS:528:DC%2BD3MXhsVKntLo%3D Occurrence Handle11074262
RE Marc D Cameron (2001) ArticleTitleA molecular phenotype atlas of the zebrafish retina J Neurocytol 30 593–654 Occurrence Handle1:CAS:528:DC%2BD38XlsVyit70%3D Occurrence Handle12118163
JK McBee K Palczewski W Baehr DR Pepperberg (2001) ArticleTitleConfronting complexity: The interlink of phototransduction and retinoid metabolism in the vertebrate retina Prog Retin Eye Res 20 469–529 Occurrence Handle1:CAS:528:DC%2BD3MXltFGrtLo%3D Occurrence Handle11390257
A Mendez ME Burns I Sokal AM Dizhoor W Baehr K Palczewski DA Baylor J Chen (2001) ArticleTitleRole of guanylate cyclase-activating proteins (GCAPs) in setting the flash sensititvity of rod photoreceptors Proc Natl Acad Sci USA 98 9948–9953 Occurrence Handle1:CAS:528:DC%2BD3MXmtlCmtr0%3D Occurrence Handle11493703
RJ Newbold EC Deery CE Walker SE Wilkie N Srinivasan DM Hunt SS Bhattacharya MJ Warren (2001) ArticleTitleThe destabilization of human GCAP1 by a proline to leucine mutation might cause cone-rod dystrophy Hum Mol Genet 10 47–54 Occurrence Handle1:CAS:528:DC%2BD3MXovVKquw%3D%3D Occurrence Handle11136713
C Notredame DG Higgins J Heringa (2000) ArticleTitleT-Coffee: A novel method for fast and accurate multiple sequence alignment J Mol Biol 302 205–217 Occurrence Handle10.1006/jmbi.2000.4042 Occurrence Handle1:CAS:528:DC%2BD3cXmtVGntr8%3D Occurrence Handle10964570
EV Olshevskaya S Boikov A Ermilov D Krylov JB Hurley AM Dizhoor (1999) ArticleTitleMapping functional domains of the guanylate cyclase regulator protein, GCAP-2 J Biol Chem 274 10823–10832 Occurrence Handle1:CAS:528:DyaK1MXis1Gnu7w%3D Occurrence Handle10196158
A Otto-Bruc J Buczylko I Surgucheva I Subbaraya M Rudnicka-Nawrot J Crabb A Arendt PA HArgrave W Baehr K Palczewski (1997a) ArticleTitleFunctional reconstitution of photoreceptor guanylate cyclase with native and mutant forms of guanylate cyclase activating protein 1 Biochemistry 36 4295–4302 Occurrence Handle1:CAS:528:DyaK2sXjt1Wgt7w%3D
A Otto-Bruc RN Fariss F Haeseleer J Huang J Buczylko I Surgucheva W Baehr AH Milam K Palczewski (1997b) ArticleTitleLocalization of guanylate cyclase activating protein 2 in mammalian retinas Proc Natl Acad Sci USA 94 4727–4732 Occurrence Handle1:CAS:528:DyaK2sXjtVymtrw%3D
K Palczewski I Subbaraya WA Gorczyca BS Helekar CC Ruiz H Ohguro J Huang X Zhao JW Crabb RS Johnson KA Walsh MP Gray-Keller PB Detwiler W Baehr (1994) ArticleTitleMolecular cloning and characterization of retinal photoreceptor guanylyl cyclase activating protein (GCAP) Neuron 13 395–404 Occurrence Handle10.1016/0896-6273(94)90355-7 Occurrence Handle1:CAS:528:DyaK2MXlvVyjtQ%3D%3D Occurrence Handle7520254
K Palczewski AS Polans W Baehr JB Ames (2000) ArticleTitleCalcium binding proteins in the retina: Structure, function, and the etiology of human visual diseases BioEssays 22 337–350 Occurrence Handle1:CAS:528:DC%2BD3MXmslShs7c%3D Occurrence Handle10723031
DS Papermaster (1982) ArticleTitlePreparation of retinal rod outer segments Methods Enzymol 81 48–52 Occurrence Handle1:STN:280:Bi2B2cvnt1M%3D Occurrence Handle6212746
AM Payne SM Downes DA Bessant R Taylor GE Holder MJ Warren AC Bird SS Bhattacharya (1998) ArticleTitleA mutation in guanylate cyclase activator 1A (GUCA1A) in an autosomal dominant cone dystrophy pedigree mapping to a new locus on chromosome 6p21.1 Hum Mol Genet 7 273–277 Occurrence Handle10.1093/hmg/7.2.273 Occurrence Handle1:STN:280:DyaK1c%2FoslGkuw%3D%3D Occurrence Handle9425234
AM Payne SM Downes DA Bessant C Plant T Moore AC Bird SS Bhattacharya (1999) ArticleTitleGenetic analysis of the guanylate cyclase activator IB (GUCA1B) gene in patients with autosomal dominant retinal dystrophies J Med Genet 36 691–693 Occurrence Handle1:CAS:528:DyaK1MXms1Sqsrk%3D Occurrence Handle10507726
ME Pennesi KA Howes W Baehr SM Wu (2003) ArticleTitleGCAP1 rescues normal cone photoreceptor responses in GCAP1/GCAP2 knockout mice Proc Natl Acad Sci USA 100 6783–6788 Occurrence Handle1:CAS:528:DC%2BD3sXktlygsbs%3D Occurrence Handle12732716
A Polans W Baehr K Palczewski (1996) ArticleTitleTurned on by Ca2+ ! The physiology and pathology of Ca2+ binding proteins in the retina Trends Neurosci 19 547–554 Occurrence Handle1:CAS:528:DyaK28XnsVOksL4%3D Occurrence Handle8961484
PA Raymond LK Barthel ME Rounsifer SA Sullivan JK Knight (1993) ArticleTitleExpression of rod and cone visual pigments in goldfish and zebrafish: A rhodopsin-like gene is expressed in cones Neuron 10 1161–1174 Occurrence Handle1:CAS:528:DyaK3sXms1Ojsrc%3D Occurrence Handle8318234
E Raz (2003) ArticleTitlePrimordial germ-cell development: The zebrafish perspective Nat Rev Genet 4 690–700 Occurrence Handle1:CAS:528:DC%2BD3sXmvVWlsrk%3D Occurrence Handle12951570
TJ Schoenmakers GJ Visser G Flik AP Theuvenet (1992) ArticleTitleCHELATOR: An improved method for computing metal ion concentrations in physiological solutions Biotechniques 12 870–879 Occurrence Handle1:CAS:528:DyaK38XlsVKltr0%3D Occurrence Handle1642895
M Seimiya T Kusakabe N Suzuki (1997) ArticleTitlePrimary structure and differential gene expression of three membrane forms of guanylyl cyclase found in the eye of the teleost Oryzias latipes J Biol Chem 272 23407–23417 Occurrence Handle1:CAS:528:DyaK2sXmt1WisLk%3D Occurrence Handle9287356
SL Semple-Rowland P Larkin JD Bronson K Nykamp WJ Streit W Baehr (1999) ArticleTitleCharacterization of the chicken GCAP gene array and analyses of GCAP1, GCAP2, and GC1 gene expression in normal and rd chicken pineal Mol Vis 5 14 Occurrence Handle1:CAS:528:DC%2BD3cXlvVyktw%3D%3D Occurrence Handle10427104
AW Shyjan FJ Sauvage Particlede NA Gillett DV Goeddel DG Lowe (1992) ArticleTitleMolecular cloning of a retina-specific membrane guanylyl cyclase Neuron 9 727–737 Occurrence Handle1:CAS:528:DyaK3sXltFajtbs%3D Occurrence Handle1356371
I Sokal N Li I Surgucheva MJ Warren AM Payne SS Bhattacharya W Baehr K Palczewski (1998) ArticleTitleGCAP1(Y99C) mutant is constitutively active in autosomal dominant cone dystrophy Mol Cell 2 129–133 Occurrence Handle10.1016/S1097-2765(00)80121-5 Occurrence Handle1:CAS:528:DyaK1cXltVCjtLw%3D Occurrence Handle9702199
I Sokal AE Otto-Bruc I Surgucheva CL Verlinde CK Wang W Baehr K Palczewski (1999) ArticleTitleConformational changes in guanylyl cyclase-activating protein 1 (GCAP1) and its tryptophan mutants as a function of calcium concentration J Biol Chem 274 19829–19837 Occurrence Handle1:CAS:528:DyaK1MXksFKmtbY%3D Occurrence Handle10391927
I Sokal N Li CL Verlinde F Haeseleer W Baehr K Palczewski (2000) ArticleTitleCa2+-binding proteins in the retina: from discovery to etiology of human disease(1) Biochim Biophys Acta 1498 233–251 Occurrence Handle1:CAS:528:DC%2BD3cXosFCjs7o%3D Occurrence Handle11108966
I Sokal N Li CS Klug S Filipek WL Hubbell W Baehr K Palczewski (2001) ArticleTitleCalcium-sensitive regions of GCAP1 as observed by chemical modifications, fluorescence and EPR spectroscopies J Biol Chem 276 43361–43373 Occurrence Handle1:CAS:528:DC%2BD3MXptleltb0%3D Occurrence Handle11524415
I Subbaraya CC Ruiz BS Helekar X Zhao WA Gorczyca MJ Pettenati PN Rao K Palczewski W Baehr (1994) ArticleTitleMolecular characterization of human and mouse photoreceptor guanylate cyclase activating protein (GCAP) and chromosomal localization of the human gene J Biol Chem 269 31080–31089 Occurrence Handle1:CAS:528:DyaK2MXhvVeltr4%3D Occurrence Handle7983048
A Surguchov JD Bronson P Banerjee JA Knowles CC Ruiz I Subbaraya K Palczewski W Baehr (1997) ArticleTitleThe human GCAP1 and GCAP2 genes are arranged in a tail-to-tail array on the short arm of chromosome 6 (p21.1) Genomics 39 312–322 Occurrence Handle1:CAS:528:DyaK2sXht1ygsrk%3D Occurrence Handle9119368
S Tohya A Mochizuki Y Iwasa (2003) ArticleTitleDifference in the retinal cone mosaic pattern between zebrafish and medaka: cell-rearrangement model J Theor Biol 221 289–300 Occurrence Handle12628235
B Venkatesh P Gilligan S Brenner (2000) ArticleTitleFugu: A compact vertebrate reference genome FEBS Lett 476 3–7 Occurrence Handle1:CAS:528:DC%2BD3cXktlKqsLo%3D Occurrence Handle10878239
TS Vihtelic CJ Doro DR Hyde (1999) ArticleTitleCloning and characterization of six zebrafish photoreceptor opsin cDNAs and immunolocalization of their corresponding proteins Vis Neurosci 16 571–585 Occurrence Handle1:STN:280:DyaK1M3nslCkuw%3D%3D Occurrence Handle10349976
SE Wilkie I Stinton P Cottrill E Deery R Newbold MJ Warren SS Bhattacharya DM Hunt (2002) ArticleTitleCharacterisation of two genes for guanylate cyclase activator protein (GCAP1 and GCAP2) in the Japanese pufferfish, Fugu rubripes Biochim Biophys Acta 1577 73–80 Occurrence Handle1:CAS:528:DC%2BD38XlvVeqsrw%3D Occurrence Handle12151097
SE Wilkie Y Li EC Deery RJ Newbold D Garibaldi JB Bateman H Zhang W Lin DJ Zack SS Bhattacharya MJ Warren DM Hunt K Zhang (2001) ArticleTitleIdentification and functional consequences of a new mutation (E155G) in the gene for GCAP1 that causes autosomal dominant cone dystrophy Am J Hum Genet 69 471–480 Occurrence Handle10.1086/323265 Occurrence Handle1:CAS:528:DC%2BD3MXmvV2kurg%3D Occurrence Handle11484154
J Wittbrodt A Shima M Schartl (2002) ArticleTitleMedaka—A model organism from the far East Nat Rev Genet 3 53–64 Occurrence Handle1:CAS:528:DC%2BD38XhsV2gtrg%3D Occurrence Handle11823791
RB Yang DL Garbers (1997) ArticleTitleTwo eye guanylyl cyclases are expressed in the same photoreceptor cells and form homomers in preference to heteromers J Biol Chem 272 13738–13742 Occurrence Handle1:CAS:528:DyaK2sXjsFWhsbk%3D Occurrence Handle9153227
Acknowledgments
We would like to thank Darin Bronson for expert technical assistance with this project. This research was supported by grants from the NIH (EY08123, to W.B., and EY08061, to K.P.), the Ruth and Milton Steinbach Fund, the E.k. Bishop Foundation, the Alcon Research Institute, and Research to Prevent Blindness, Inc. (RPB), to the Departments of Ophthalmology at the University of Washington and the University of Utah, and a Center Grant from Foundation Fighting Blindness, Inc., to the University of Utah. W.B. and K.P. are recipients of an RPB Senior Investigator Award. W.B. acknowledges an endowment from Ralph and Mary Tuck to the Department of Ophthalmology at the University of Utah.
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(Yoshikazu Imanishi and Lili Yang)These authors contributed equally.
[Reviewing Editor: Martin Kreitman]
Abbreviations Used: CaM, calmodulin; DC, double cones; EST, expressed sequence tag; GC, guanylate cyclase; GCAP, GC-activating protein; fuGCAP, fugu GCAP; zGCAP, zebrafish GCAP; GCIP, GC-inhibitory protein; LS, long single cones; NCBP, neuronal Ca2+-binding protein; PAGE, polyacrylamide gel electrophoresis; PB, phosphate buffer; PBS, phosphate-buffered saline; PBST, phosphate-buffered saline with 0.1% Triton X-100; TBST, Tris-buffered saline with 0.1% Tween 20; PCR, polymerase chain reaction; ROS, rod outer segments; SS, short single cones; SDS, sodium dodecyl sulfate; PVDF, polyvinylidene difluoride; RT, reverse transcriptase; NJ, neighbor joining; ORF, open reading frame
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Imanishi, Y., Yang, L., Sokal, I. et al. Diversity of Guanylate Cyclase-Activating Proteins (GCAPs) in Teleost Fish: Characterization of Three Novel GCAPs (GCAP4, GCAP5, GCAP7) from Zebrafish (Danio rerio) and Prediction of Eight GCAPs (GCAP1-8) in Pufferfish (Fugu rubripes). J Mol Evol 59, 204–217 (2004). https://doi.org/10.1007/s00239-004-2614-y
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DOI: https://doi.org/10.1007/s00239-004-2614-y