Gene Information
Gene NameFBN2
OrganismHomo sapiens (Human)
Gene Length2912
Protein NamesFibrillin-2 [Cleaved into: Placensin]
Target Namefibrillin-2
Target TypeNA
Gene Age645 ( ENSG00000138829 )
Evolutionary StageEukaryota
AlphaFoldDBNA
Gene CardFBN2
Uniprot IDP35556
PfamPF12662; PF12947; PF07645; PF18193; PF12661; PF00683
In ASDno
Allosteric Predictionno (-0.401759874)
Ortholog in AnimalsAlpaca_ FBN2 ( ortholog_one2one )
Dog_ FBN2 ( ortholog_one2one )
GuineaPig_ FBN2 ( ortholog_one2one )
Macaque_ FBN2 ( ortholog_one2one )
Mouse_ Fbn2 ( ortholog_one2one )
Pig_ FBN2 ( ortholog_one2one )
Rat_ Fbn2 ( ortholog_one2one )
Rabbit_ FBN2 ( ortholog_one2one )
OhnologsFBN3, FBN1
ParalogsFBN1, FBN3
Tissueplacenta
Tissue SpecificityAlmost exclusively expressed in placenta (PubMed:32329225). Expressed at much lower level in other tissues (PubMed:32329225). Expressed in fetal eye (18 weeks)in the retinal pigment epithelium (RPE), the choroid, Bruch's membrane and in the sclera (PubMed:24899048). Not expressed in the neural retina (PubMed:24899048). {ECO:0000269|PubMed:24899048, ECO:0000269|PubMed:32329225}.;
[Placensin]: Present at high level in cytotrophoblasts as compared with syncytiotrophoblasts at 8-9 weeks of pregnancy (at protein level) (PubMed:32329225). Levels in the serum increase during pregnancy (at protein level) (PubMed:32329225). {ECO:0000269|PubMed:32329225}.
Pharmacological Animal ModelsNA
Gene Ontology
(biological process)
Gene Ontology
(cellular component)
Gene Ontology
(molecular function)
PDB NA 
DBSNP rs137852826  rs548605398  rs145259927  rs154001  rs137852827  rs137852828  rs200060005  rs1206843725  rs1554123065  rs863223567  rs149054177  rs28931602  rs137852825  rs267606802  rs78727187  rs794727560  rs200837433  rs56168072  rs2307109  rs32209  rs1801169  rs2291628  rs2291628  rs1801170 
Subcellular location [CC]Secreted {ECO:0000269|PubMed:32329225}. Note=Fibrillin-2 and Placensin chains are still linked together during the secretion from cells, but are subsequently separated by furin. {ECO:0000269|PubMed:32329225}.;
[Fibrillin-2]: Secreted, extracellular space, extracellular matrix {ECO:0000269|PubMed:8120105}.;
[Placensin]: Secreted {ECO:0000269|PubMed:32329225}. Note=Secreted by placental cells. {ECO:0000269|PubMed:32329225}.
Mouse PG classificationNA
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