Expression Table

Gene Name: alk8 (activin receptor-like kinase 8, ACVR1 activin A receptor, type I, also known as alk8, lost a fin, mfn, lost-a-fin, etID124543.2, alk8sum, alk2, zalk8, mini fin, fk50h05, wu:fk50h05 , laf )
Description: TGF-beta receptor kinase
Key: I = Interpolated; X = Not Detected; ? = Inconsistent data; ! = Expressed but no region
Table built from ZFIN data (http://zfin.org/zf_info/downloads.html): Tue Dec 4 14:01:03 PST 2007
alk8StageHoursZFIN expression rangeeyebrainwhole organismunspecified
Zygote1-cell0     
Cleavage2-cell0.75     
4-cell1.0     
8-cell1.25     
16-cell1.5     
32-cell1.75     
64-cell2.0     
Blastula124-cell2.25     
256-cell2.5     
512-cell2.75     
1k-cell3.0     
High3.33     
Oblong3.66     
Sphere4.0     
Dome4.33     
30% epiboly4.66     
Gastrula50%-epiboly5.25     
Germ-ring5.66     
Shield6.0     
75% epiboly stage8.0     
90% epiboly9.0     
bud stage10.0     
Segmentation1-4 somites10.33     
5-9 somites11.66     
10-13 somites14.0     
14-19 somites16.0     
20-25 somites19.0     
26+ somites22.0     
PharyngulaPrim-524.0     
Prim-1530.0     
Prim-2536.0     
High-pec42.0     
HatchingLong-pec48.0     
Pec-fin60.0     


Literature Evidence



Evidence for Interactioninjected mRNA encoding a constitutively active version of Alk8 can rescue the strong dorsalization of bmp2b/swirl mutants.
Target Genebmp2b
Upstream Genealk8
Interaction Typeenhance
Altered modeloverexpression
Time of Interaction in evidence4.66
Location of Interaction in evidencemesendoderm
Evidence for Direct2
Binding Site Sequence 
Location of Site 
Last AuthorHammerschmidt, M.
JournalDevelopment
Year2001
Vol128
Start Page849



Evidence for Interactioninjected mRNA encoding a constitutively active version of Alk8 can rescue the strong dorsalization of bmp7/snailhouse mutants
Target Genebmp7
Upstream Genealk8
Interaction Typeenhance
Altered modeloverexpression
Time of Interaction in evidence4.66
Location of Interaction in evidencemesendoderm
Evidence for Direct2
Binding Site Sequence 
Location of Site 
Last AuthorHammerschmidt, M.
JournalDevelopment
Year2001
Vol128
Start Page849



Evidence for Interactionthe data suggest that Alk8 acts as a Bmp2b/7 receptor upstream of Smad5.
Target Genesmad5
Upstream Genealk8
Interaction Typeenhance
Altered modelMASO
Time of Interaction in evidence4.66
Location of Interaction in evidencemesendoderm
Evidence for Direct1, 2
Binding Site Sequence 
Location of Site 
Last AuthorHammerschmidt, M.
JournalDevelopment
Year2001
Vol128
Start Page849



Evidence for Interactionthe data suggest that Alk8 acts as a Bmp2b/7 receptor upstream of Smad5.
Target Genesmad5
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence4.66
Location of Interaction in evidencemesendoderm
Evidence for Direct1, 2
Binding Site Sequence 
Location of Site 
Last AuthorHammerschmidt, M.
JournalDevelopment
Year2001
Vol128
Start Page849



Evidence for InteractionVed expression is down-regulated at late blastula stage and up-regulated during gastrulation in BMP signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence4.66
Location of Interaction in evidenceEVL
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionVed expression is down-regulated at late blastula stage in MZ-laf/bmpRI(alk8) mutants.
Target Geneved
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence4.66
Location of Interaction in evidenceEVL
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for Interactionin alk8 (a type I TGFbeta receptor) MO-injected embryos, vhnf1 expression in the endoderm is significantly reduced.
Target Genehnf1b
Upstream Genealk8
Interaction Typeenhance
Altered modelMASO
Time of Interaction in evidence4.66
Location of Interaction in evidenceventral mesoderm
Evidence for Direct2
Binding Site Sequence 
Location of Site 
Last AuthorLin, S.
JournalDev Biol
Year2007
Vol303
Start Page561



Evidence for Interactionvhnf1 acts downstream of the signaling pathways of RA, Bmp, and Fgf to regulate pancreas development in zebrafish.
Target Genehnf1b
Upstream Genealk8
Interaction Typeenhance
Altered modelMASO
Time of Interaction in evidence4.66
Location of Interaction in evidenceventral mesoderm
Evidence for Direct2
Binding Site Sequence 
Location of Site 
Last AuthorLin, S.
JournalDev Biol
Year2007
Vol303
Start Page561



Evidence for InteractionInhibiting both maternally and zygotically supplied alk8 gene products with morpholino antisense oligonucleotides leads to much stronger dorsalization, can be rescued by injected mRNA encoding Alk8 or the Bmp-regulated transcription factor Smad5.
Target Genesmad5
Upstream Genealk8
Interaction Typeenhance
Altered modelMASO
Time of Interaction in evidence4.66
Location of Interaction in evidenceventral mesoderm
Evidence for Direct1, 2
Binding Site Sequence 
Location of Site 
Last AuthorHammerschmidt, M.
JournalDevelopment
Year2001
Vol128
Start Page849



Evidence for InteractionInhibiting both maternally and zygotically supplied alk8 gene products with morpholino antisense oligonucleotides leads to much stronger dorsalization, can be rescued by injected mRNA encoding Alk8 or the Bmp-regulated transcription factor Smad5.
Target Genesmad5
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence4.66
Location of Interaction in evidenceventral mesoderm
Evidence for Direct1, 2
Binding Site Sequence 
Location of Site 
Last AuthorHammerschmidt, M.
JournalDevelopment
Year2001
Vol128
Start Page849



Evidence for Interactionved transcripts are ventrally restricted by BMP factors such as bmp2b, bmp7, smad5, and alk8, and by dorsal factors (chd and gsc)
Target Geneved
Upstream Genealk8
Interaction Typerepress
Altered modeloverexpression
Time of Interaction in evidence4.66
Location of Interaction in evidenceventral mesoderm
Evidence for Direct2
Binding Site Sequence 
Location of Site 
Last AuthorCotelli, F.
JournalDev Dyn
Year2004
Vol3
Start Page494



Evidence for InteractionLaf/Alk8 as a type I BMP receptor required for the specification of ventral cell fates.
Target Genealk8
Upstream Genebmp2b
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence4.66
Location of Interaction in evidenceventral mesoderm
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionVed expression is down-regulated at late blastula stage and up-regulated during gastrulation in BMP signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence5.25
Location of Interaction in evidenceEVL
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionVed expression is up-regulated during gastrulation in MZ-laf/bmpRI(alk8) signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence5.25
Location of Interaction in evidenceEVL
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionWe never found a homozygous laftm110b embryo that had a wild-type or ventralized phenotype, consistent with the Laf/Alk8 receptor functioning downstream of the Bmp2b.
Target Genealk8
Upstream Genebmp2b
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence6
Location of Interaction in evidenceventral mesoderm
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionIn most MZ-laf/alk8 mutants dlx3 expression is absent.
Target Genedlx3b
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceepiblast
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionIn most MZ-laf/alk8 mutants dlx3 expression is absent, while in the remaining embryos it is severely reduced.
Target Genedlx3b
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceepiblast
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionFoxb1.2 expression is expanded ventrally in MZ-laf embryos at 70% epiboly, the expansion is more pronounced in more vegetal regions.
Target Genefoxb1.2
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceepiblast
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionIn MZ-laf/alk8 mutant embryos gata2 expression is absent.
Target Genegata2
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceepiblast
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionIn MZ-laf/alk8 mutant embryos gata2 expression is absent.
Target Genegata2
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceepiblast
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionExpression of foxb1.2 in wild-type and MZ-laf embryos at 70% epiboly. foxb1.2 expression is expanded ventrally, the expansion is more pronounced in more vegetal regions.
Target Genefoxb1.2
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidencemesendoderm
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionFoxb1.2 expression is expanded ventrally in MZ-laf embryos at 70% epiboly, the expansion is more pronounced in more vegetal regions.
Target Genefoxb1.2
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidencemargin
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionVed expression is up-regulated during gastrulation in MZ-laf/bmpRI signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidencemargin
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionFoxb1.2 expression is expanded ventrally in MZ-laf embryos at 70% epiboly, the expansion is more pronounced in more vegetal regions.
Target Genefoxb1.2
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceneuroectoderm
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionFoxb1.2 expression is expanded ventrally in MZ-laf embryos at 70% epiboly, the expansion is more pronounced in more vegetal regions.
Target Genefoxb1.2
Upstream Genealk8
Interaction Typerepress
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidencepresumptive brain
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionVed expression is up-regulated during gastrulation in MZ-laf/bmpRI signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence8
Location of Interaction in evidenceYSL
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionVed expression is up-regulated during gastrulation in MZ-laf/bmpRI signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence9
Location of Interaction in evidenceepiblast
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionVed expression is up-regulated during gastrulation in MZ-laf/bmpRI signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence9
Location of Interaction in evidencemargin
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionWe never found a homozygous laftm110b embryo that had a wild-type or ventralized phenotype , consistent with the Laf/Alk8 receptor functioning downstream of the Bmp2b and Bmp7 ligands.
Target Genealk8
Upstream Genebmp7
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence9
Location of Interaction in evidenceventral mesoderm
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorMary C. Mullins
JournalDevelopment
Year2001
Vol128
Start Page859



Evidence for InteractionVed expression is up-regulated during gastrulation in MZ-laf/bmpRI signaling mutants.
Target Geneved
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence9
Location of Interaction in evidenceYSL
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorFranco Cotelli
JournalDevelopmental Dynamics
Year2004
Vol230
Start Page494



Evidence for InteractionBmp receptor lost-a-fin/alk8 is required for rostral pu.1 expression and myelopoiesis, Furthermore, the role of Alk8 in myelopoiesis was genetically separable from its earlier role in dorsal-ventral embryonic patterning.
Target Genespi1
Upstream Genealk8
Interaction Typeenhance
Altered modelmutant embryos
Time of Interaction in evidence11.66
Location of Interaction in evidencelateral plate mesoderm
Evidence for Direct1
Binding Site Sequence 
Location of Site 
Last AuthorLieschke, G. J.
JournalCurr Biol
Year2006
Vol16
Start Page506



Evidence for Interactionhnf1b acts downstream of the signaling pathways of RA, Bmp, and Fgf to regulate pancreas development in zebrafish.
Target Genehnf1b
Upstream Genealk8
Interaction Typeenhance
Altered modelMASO
Time of Interaction in evidence24
Location of Interaction in evidencegut
Evidence for Direct3
Binding Site Sequence 
Location of Site 
Last AuthorLin, S.
JournalDev Biol
Year2007
Vol303
Start Page561



Evidence for Interactionhnf1b acts downstream of the signaling pathways of RA, Bmp, and Fgf to regulate pancreas development in zebrafish.
Target Genehnf1b
Upstream Genealk8
Interaction Typeenhance
Altered modelMASO
Time of Interaction in evidence24
Location of Interaction in evidencepronephros
Evidence for Direct3
Binding Site Sequence 
Location of Site 
Last AuthorLin, S.
JournalDev Biol
Year2007
Vol303
Start Page561