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IUBMB Comments The transforming growth factor beta (TGF-beta) family of cytokines regulates cell proliferation, differentiation, recognition and death. Signalling occurs by the binding of ligand to the type II receptor, which is the constitutively active kinase. Bound TGF-beta is then recognized by receptor I, which is phosphorylated and can propagate the signal to downstream substrates [1,3].
The taxonomic range for the selected organisms is: Mus musculus The enzyme appears in selected viruses and cellular organisms
Synonyms
ripk1, bmpr2, ripk3, tgf-beta receptor, tbetarii, alk-1, acvrl1, bmpr-ii, bmprii, tbetar-ii,
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activin receptor-like kinase 1
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activin receptor-like kinase 5
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activin receptor-like-kinase 1
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MIS type II receptor
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serine/threonine receptor kinase
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Serine/threonine-protein kinase receptor R1
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Serine/threonine-protein kinase receptor R4
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Serine/threonine-protein kinase receptor R5
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Serine/threonine-protein kinase receptor R6
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TGF-beta type I receptor
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TGF-beta type I receptor kinase
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TGF-beta type II receptor
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transforming growth factor-beta receptor
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transforming growth factor-beta type I receptor kinase
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ATP:[receptor-protein] phosphotransferase
The transforming growth factor beta (TGF-beta) family of cytokines regulates cell proliferation, differentiation, recognition and death. Signalling occurs by the binding of ligand to the type II receptor, which is the constitutively active kinase. Bound TGF-beta is then recognized by receptor I, which is phosphorylated and can propagate the signal to downstream substrates [1,3].
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ATP + Smad1
ADP + phosphorylated Smad1
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phosphorylation by ALK1
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ATP + Smad2
ADP + phosphorylated Smad2
ATP + Smad3
ADP + phosphorylated Smad3
ATP + Smad5
ADP + phosphorylated Smad5
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phosphorylation by ALK1
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?
additional information
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ATP + Smad2
ADP + phosphorylated Smad2
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ATP + Smad2
ADP + phosphorylated Smad2
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phosphorylation by ALK5
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ATP + Smad2
ADP + phosphorylated Smad2
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TGF-beta-induced phosphorylation of Arg462 and Cys463 by TbetaR-I, no activity with Smad2 mutant R462I/C463A by TbetaR-I, Smad2 is no substrate of TbetaR-II and BMP type II receptor
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ATP + Smad3
ADP + phosphorylated Smad3
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ATP + Smad3
ADP + phosphorylated Smad3
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phosphorylation by ALK5
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ATP + Smad3
ADP + phosphorylated Smad3
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TGF-beta-induced C-terminal phosphorylation
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additional information
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TGF-beta regulates the activation state of endothelium via two opposing type I receptor/Smad pathways: ALK1 induces Smad1/5 phosphorylation leading to increased endothelial cell proliferation and migration, while ALK5 promotes Smad2/3 activation and inhibits both processes, regulation overview
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additional information
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the enzyme is involved in p38 MAPK activation
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additional information
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substrate specificity of transforming growth factor-beta receptor I
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ATP + Smad1
ADP + phosphorylated Smad1
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phosphorylation by ALK1
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ATP + Smad2
ADP + phosphorylated Smad2
ATP + Smad3
ADP + phosphorylated Smad3
ATP + Smad5
ADP + phosphorylated Smad5
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phosphorylation by ALK1
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additional information
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ATP + Smad2
ADP + phosphorylated Smad2
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ATP + Smad2
ADP + phosphorylated Smad2
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phosphorylation by ALK5
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ATP + Smad3
ADP + phosphorylated Smad3
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ATP + Smad3
ADP + phosphorylated Smad3
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phosphorylation by ALK5
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additional information
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TGF-beta regulates the activation state of endothelium via two opposing type I receptor/Smad pathways: ALK1 induces Smad1/5 phosphorylation leading to increased endothelial cell proliferation and migration, while ALK5 promotes Smad2/3 activation and inhibits both processes, regulation overview
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additional information
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the enzyme is involved in p38 MAPK activation
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4(quinolin-4-yl)-substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole derivatives
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IC50 of 0.00015-0.0051 mM, overview
4-phenyl-substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole derivatives
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IC50 of 0.00011-0.020 mM, overview
additional information
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ALK1 mediates inhibition of the ALK5/Smad2/3 pathway
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ALK5
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is important for ALK1/TGF-beta signaling
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TGF-beta
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TGF-beta
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a potent regulator of cell proliferation, differentiation, motility, and apoptosis, binds to and activates serine/threonine receptors that phosphorylate Smad2 and Smad3
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TGF-beta
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activates the type II and type I membrane receptors, e.g. ALK1 and ALK5
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0.00015 - 0.0051
4(quinolin-4-yl)-substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole derivatives
Mus musculus
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IC50 of 0.00015-0.0051 mM, overview
0.00011 - 0.02
4-phenyl-substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole derivatives
Mus musculus
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IC50 of 0.00011-0.020 mM, overview
0.000031
LY364947
Mus musculus
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IC50 is 31 nM
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additional information
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brenda
wild-type and endoglin +/- mice
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brenda
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brenda
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brenda
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embryonic cells
brenda
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brenda
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brenda
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enbryonic fibroblast cell line
brenda
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fibroblast cell line
brenda
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brenda
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brenda
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brenda
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brenda
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malfunction
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association of ACVRL1 mutations with a vascular disease, familial pulmonary artery hypertension
physiological function
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activin receptor-like-kinase 1 is a receptor for ligands of the transforming growth factor-beta family
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AVR2B_MOUSE
536
1
60542
Swiss-Prot
Secretory Pathway (Reliability: 1 )
BMPR2_MOUSE
1038
1
115020
Swiss-Prot
Secretory Pathway (Reliability: 2 )
BMR1A_MOUSE
532
1
60063
Swiss-Prot
Secretory Pathway (Reliability: 1 )
BMR1B_MOUSE
502
1
56944
Swiss-Prot
other Location (Reliability: 2 )
AMHR2_MOUSE
568
1
61195
Swiss-Prot
Secretory Pathway (Reliability: 3 )
TGFR2_MOUSE
567
1
64219
Swiss-Prot
Secretory Pathway (Reliability: 4 )
AVR2A_MOUSE
513
1
57890
Swiss-Prot
Secretory Pathway (Reliability: 1 )
TGFR1_MOUSE
503
2
56179
Swiss-Prot
Secretory Pathway (Reliability: 2 )
ACV1B_MOUSE
505
1
56700
Swiss-Prot
Secretory Pathway (Reliability: 1 )
ACV1C_MOUSE
493
2
54700
Swiss-Prot
Secretory Pathway (Reliability: 1 )
ACVL1_MOUSE
502
0
56519
Swiss-Prot
Mitochondrion (Reliability: 4 )
ACVR1_MOUSE
509
1
57226
Swiss-Prot
Secretory Pathway (Reliability: 2 )
Q3UG22_MOUSE
567
1
64146
TrEMBL
Secretory Pathway (Reliability: 4 )
Q9CU19_MOUSE
189
1
21067
TrEMBL
other Location (Reliability: 4 )
A0A2R8W6H9_MOUSE
448
1
47982
TrEMBL
Secretory Pathway (Reliability: 3 )
Q8BRS2_MOUSE
592
1
67136
TrEMBL
Secretory Pathway (Reliability: 3 )
Q8C7A7_MOUSE
451
1
50169
TrEMBL
Secretory Pathway (Reliability: 2 )
E9Q418_MOUSE
434
1
48888
TrEMBL
other Location (Reliability: 3 )
Q3TZF1_MOUSE
505
1
56700
TrEMBL
Secretory Pathway (Reliability: 1 )
F6V9X7_MOUSE
190
0
20484
TrEMBL
other Location (Reliability: 5 )
B7ZNG1_MOUSE
451
1
50491
TrEMBL
other Location (Reliability: 1 )
A2AJR5_MOUSE
413
0
46124
TrEMBL
Secretory Pathway (Reliability: 1 )
Q3UP52_MOUSE
209
0
23640
TrEMBL
other Location (Reliability: 5 )
Q53Z43_MOUSE
532
1
60063
TrEMBL
Secretory Pathway (Reliability: 1 )
Q3USS1_MOUSE
491
1
55894
TrEMBL
Mitochondrion (Reliability: 2 )
Q3U485_MOUSE
426
1
47906
TrEMBL
other Location (Reliability: 4 )
Q8BRV4_MOUSE
513
1
57916
TrEMBL
Secretory Pathway (Reliability: 1 )
Q91YV1_MOUSE
502
1
56483
TrEMBL
Mitochondrion (Reliability: 5 )
Q3UG09_MOUSE
768
0
84871
TrEMBL
other Location (Reliability: 1 )
A2AJR6_MOUSE
336
0
37228
TrEMBL
Secretory Pathway (Reliability: 1 )
Q8BQS9_MOUSE
592
1
67108
TrEMBL
Secretory Pathway (Reliability: 4 )
Q9CVP4_MOUSE
215
0
24353
TrEMBL
other Location (Reliability: 3 )
Q4FJL1_MOUSE
503
2
56179
TrEMBL
Secretory Pathway (Reliability: 2 )
Q9D5H8_MOUSE
420
1
47575
TrEMBL
other Location (Reliability: 2 )
Q3V348_MOUSE
363
0
41112
TrEMBL
other Location (Reliability: 2 )
Q60607_MOUSE
500
1
56439
TrEMBL
Secretory Pathway (Reliability: 1 )
A2AI38_MOUSE
513
1
57890
TrEMBL
Secretory Pathway (Reliability: 1 )
Q543C0_MOUSE
592
1
67122
TrEMBL
Secretory Pathway (Reliability: 3 )
Q91ZR8_MOUSE
567
1
64247
TrEMBL
Secretory Pathway (Reliability: 4 )
B2RRZ4_MOUSE
502
1
56944
TrEMBL
other Location (Reliability: 2 )
Q3UER5_MOUSE
580
1
65357
TrEMBL
Secretory Pathway (Reliability: 2 )
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additional information
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knockdown of ALK5 expression in embryonic endothelial cells by antisense oligonucleotides results in inhibition of both TGF-beta-induced Smad 2 and Smad1/5 phosphorylation, an ALk5mutant defective in Smad activation rescues TGF-beta/ALK1-induced signaling in ALK5 null mutant endothelial cells
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expression of ALK1 and ALK5 in 293T cells, Hep-G2 cells, and in COS-7 cells using the adenovirus transfection system
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in endoglin +/- mice, ACVRL1 is expressed in small regions of the distal arteries where endoglin is below detectable limits, co-expression of ACVRL1 and endoglin and associated pSmad1/5/8 signalling in the endothelial cells of distal arterioles
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Sawyer, J.S.; Beight, D.W.; Britt, K.S.; Anderson, B.D.; Campbell, R.M.; Goodson, T.Jr.; Herron, D.K.; Li, H.Y.; McMillen, W.T.; Mort, N.; Parsons, S.; Smith, E.C.; Wagner, J.R.; Yan, L.; Zhang, F.; Yingling, J.M.
Synthesis and activity of new aryl- and heteroaryl-substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole inhibitors of the transforming growth factor-beta type I receptor kinase domain
Bioorg. Med. Chem. Lett.
14
3581-3584
2004
Homo sapiens, Mus musculus
brenda
Yakymovych, I.; Heldin, C.H.; Souchelnytskyi, S.
Smad2 phosphorylation by type I receptor. Contribution of arginine 462 and cysteine 463 In the C terminus of Smad2 for specificity
J. Biol. Chem.
279
35781-35787
2004
Mus musculus
brenda
Goumans, M.J.; Valdimarsdottir, G.; Itoh, S.; Lebrin, F.; Larsson, J.; Mummery, C.; Karlsson, S.; ten Dijke, P.
Activin receptor-like kinase (ALK)1 is an antagonistic mediator of lateral TGFbeta/ALK5 signaling
Mol. Cell
12
817-828
2003
Mus musculus
brenda
Mahmoud, M.; Borthwick, G.M.; Hislop, A.A.; Arthur, H.M.
Endoglin and activin receptor-like-kinase 1 are co-expressed in the distal vessels of the lung: implications for two familial vascular dysplasias, HHT and PAH
Lab. Invest.
89
15-25
2009
Mus musculus
brenda
Transporter Classification Database (TCDB):
8.A.23.1.27