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Activin receptor type-1B

NameActivin receptor type-1B
Synonyms
  • 2.7.11.30
  • Activin receptor type IB
  • Activin receptor-like kinase 4
  • ACTR-IB
  • ACVRLK4
  • ALK-4
  • ALK4
  • Serine/threonine-protein kinase receptor R2
  • SKR2
Gene NameACVR1B
OrganismHuman
Amino acid sequence
>lcl|BSEQ0001326|Activin receptor type-1B
MAESAGASSFFPLVVLLLAGSGGSGPRGVQALLCACTSCLQANYTCETDGACMVSIFNLD
GMEHHVRTCIPKVELVPAGKPFYCLSSEDLRNTHCCYTDYCNRIDLRVPSGHLKEPEHPS
MWGPVELVGIIAGPVFLLFLIIIIVFLVINYHQRVYHNRQRLDMEDPSCEMCLSKDKTLQ
DLVYDLSTSGSGSGLPLFVQRTVARTIVLQEIIGKGRFGEVWRGRWRGGDVAVKIFSSRE
ERSWFREAEIYQTVMLRHENILGFIAADNKDNGTWTQLWLVSDYHEHGSLFDYLNRYTVT
IEGMIKLALSAASGLAHLHMEIVGTQGKPGIAHRDLKSKNILVKKNGMCAIADLGLAVRH
DAVTDTIDIAPNQRVGTKRYMAPEVLDETINMKHFDSFKCADIYALGLVYWEIARRCNSG
GVHEEYQLPYYDLVPSDPSIEEMRKVVCDQKLRPNIPNWWQSYEALRVMGKMMRECWYAN
GAARLTALRIKKTLSQLSVQEDVKI
Number of residues505
Molecular Weight56806.05
Theoretical pI7.04
GO Classification
Functions
  • ATP binding
  • inhibin binding
  • ubiquitin protein ligase binding
  • protein serine/threonine kinase activity
  • receptor signaling protein serine/threonine kinase activity
  • activin receptor activity, type I
  • transmembrane receptor protein serine/threonine kinase activity
  • SMAD binding
  • metal ion binding
Processes
  • extrinsic apoptotic signaling pathway
  • positive regulation of erythrocyte differentiation
  • positive regulation of transcription from RNA polymerase II promoter
  • nodal signaling pathway
  • protein phosphorylation
  • signal transduction
  • positive regulation of activin receptor signaling pathway
  • hair follicle development
  • protein autophosphorylation
  • development of primary female sexual characteristics
  • positive regulation of trophoblast cell migration
  • transmembrane receptor protein serine/threonine kinase signaling pathway
  • activin receptor signaling pathway
  • G1/S transition of mitotic cell cycle
  • peptidyl-threonine phosphorylation
  • positive regulation of pathway-restricted SMAD protein phosphorylation
  • negative regulation of gene expression
  • in utero embryonic development
  • negative regulation of cell growth
  • central nervous system development
  • regulation of transcription, DNA-templated
Components
  • integral component of plasma membrane
  • activin receptor complex
  • plasma membrane
  • receptor complex
  • cell surface
  • extracellular exosome
General FunctionUbiquitin protein ligase binding
Specific FunctionTransmembrane serine/threonine kinase activin type-1 receptor forming an activin receptor complex with activin receptor type-2 (ACVR2A or ACVR2B). Transduces the activin signal from the cell surface to the cytoplasm and is thus regulating a many physiological and pathological processes including neuronal differentiation and neuronal survival, hair follicle development and cycling, FSH production by the pituitary gland, wound healing, extracellular matrix production, immunosuppression and carcinogenesis. Activin is also thought to have a paracrine or autocrine role in follicular development in the ovary. Within the receptor complex, type-2 receptors (ACVR2A and/or ACVR2B) act as a primary activin receptors whereas the type-1 receptors like ACVR1B act as downstream transducers of activin signals. Activin binds to type-2 receptor at the plasma membrane and activates its serine-threonine kinase. The activated receptor type-2 then phosphorylates and activates the type-1 receptor such as ACVR1B. Once activated, the type-1 receptor binds and phosphorylates the SMAD proteins SMAD2 and SMAD3, on serine residues of the C-terminal tail. Soon after their association with the activin receptor and subsequent phosphorylation, SMAD2 and SMAD3 are released into the cytoplasm where they interact with the common partner SMAD4. This SMAD complex translocates into the nucleus where it mediates activin-induced transcription. Inhibitory SMAD7, which is recruited to ACVR1B through FKBP1A, can prevent the association of SMAD2 and SMAD3 with the activin receptor complex, thereby blocking the activin signal. Activin signal transduction is also antagonized by the binding to the receptor of inhibin-B via the IGSF1 inhibin coreceptor. ACVR1B also phosphorylates TDP2.
Pfam Domain Function
Transmembrane Regions127-149
GenBank Protein ID402189
UniProtKB IDP36896
UniProtKB Entry NameACV1B_HUMAN
Cellular LocationCell membrane
Gene sequence
>lcl|BSEQ0018988|Activin receptor type-1B (ACVR1B)
ATGGCGGAGTCGGCCGGAGCCTCCTCCTTCTTCCCCCTTGTTGTCCTCCTGCTCGCCGGC
AGCGGCGGGTCCGGGCCCCGGGGGGTCCAGGCTCTGCTGTGTGCGTGCACCAGCTGCCTC
CAGGCCAACTACACGTGTGAGACAGATGGGGCCTGCATGGTTTCCATTTTCAATCTGGAT
GGGATGGAGCACCATGTGCGCACCTGCATCCCCAAAGTGGAGCTGGTCCCTGCCGGGAAG
CCCTTCTACTGCCTGAGCTCGGAGGACCTGCGCAACACCCACTGCTGCTACACTGACTAC
TGCAACAGGATCGACTTGAGGGTGCCCAGTGGTCACCTCAAGGAGCCTGAGCACCCGTCC
ATGTGGGGCCCGGTGGAGCTGGTAGGCATCATCGCCGGCCCGGTGTTCCTCCTGTTCCTC
ATCATCATCATTGTTTTCCTTGTCATTAACTATCATCAGCGTGTCTATCACAACCGCCAG
AGACTGGACATGGAAGATCCCTCATGTGAGATGTGTCTCTCCAAAGACAAGACGCTCCAG
GATCTTGTCTACGATCTCTCCACCTCAGGGTCTGGCTCAGGGTTACCCCTCTTTGTCCAG
CGCACAGTGGCCCGAACCATCGTTTTACAAGAGATTATTGGCAAGGGTCGGTTTGGGGAA
GTATGGCGGGGCCGCTGGAGGGGTGGTGATGTGGCTGTGAAAATATTCTCTTCTCGTGAA
GAACGGTCTTGGTTCAGGGAAGCAGAGATATACCAGACGGTCATGCTGCGCCATGAAAAC
ATCCTTGGATTTATTGCTGCTGACAATAAAGATAATGGCACCTGGACACAGCTGTGGCTT
GTTTCTGACTATCATGAGCACGGGTCCCTGTTTGATTATCTGAACCGGTACACAGTGACA
ATTGAGGGGATGATTAAGCTGGCCTTGTCTGCTGCTAGTGGGCTGGCACACCTGCACATG
GAGATCGTGGGCACCCAAGGGAAGCCTGGAATTGCTCATCGAGACTTAAAGTCAAAGAAC
ATTCTGGTGAAGAAAAATGGCATGTGTGCCATAGCAGACCTGGGCCTGGCTGTCCGTCAT
GATGCAGTCACTGACACCATTGACATTGCCCCGAATCAGAGGGTGGGGACCAAACGATAC
ATGGCCCCTGAAGTACTTGATGAAACCATTAATATGAAACACTTTGACTCCTTTAAATGT
GCTGATATTTATGCCCTCGGGCTTGTATATTGGGAGATTGCTCGAAGATGCAATTCTGGA
GGAGTCCATGAAGAATATCAGCTGCCATATTACGACTTAGTGCCCTCTGACCCTTCCATT
GAGGAAATGCGAAAGGTTGTATGTGATCAGAAGCTGCGTCCCAACATCCCCAACTGGTGG
CAGAGTTATGAGGCACTGCGGGTGATGGGGAAGATGATGCGAGAGTGTTGGTATGCCAAC
GGCGCAGCCCGCCTGACGGCCCTGCGCATCAAGAAGACCCTCTCCCAGCTCAGCGTGCAG
GAAGACGTGAAGATCTAA
GenBank Gene IDZ22536
GeneCard IDNot Available
GenAtlas IDACVR1B
HGNC IDHGNC:172
Chromosome Location12
Locus12q13
References
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