Homo sapiens Protein: PITX2
Summary
InnateDB Protein IDBP-34294.7
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol PITX2
Protein Name paired-like homeodomain 2
Synonyms ARP1; Brx1; IDG2; IGDS; IGDS2; IHG2; IRID2; Otlx2; PTX2; RGS; RIEG; RIEG1; RS;
Species Homo sapiens
Ensembl Protein ENSP00000347192
InnateDB Gene IDBG-34290 (PITX2)
Protein Structure
UniProt Annotation
Function Controls cell proliferation in a tissue-specific manner and is involved in morphogenesis. During embryonic development, exerts a role in the expansion of muscle progenitors. May play a role in the proper localization of asymmetric organs such as the heart and stomach. Isoform PTX2C is involved in left-right asymmetry the developing embryo (By similarity). {ECO:0000250}.
Subcellular Localization Nucleus.
Disease Associations Axenfeld-Rieger syndrome 1 (RIEG1) [MIM:180500]: An autosomal dominant disorder of morphogenesis that results in abnormal development of the anterior segment of the eye, and results in blindness from glaucoma in approximately 50% of affected individuals. Additional features include aniridia, maxillary hypoplasia, hypodontia, anal stenosis, redundant periumbilical skin. {ECO:0000269PubMed:10937553, ECO:0000269PubMed:11487566, ECO:0000269PubMed:12381896, ECO:0000269PubMed:16936096, ECO:0000269PubMed:8944018}. Note=The disease is caused by mutations affecting the gene represented in this entry.Iridogoniodysgenesis 2 (IRID2) [MIM:137600]: Autosomal dominant inherited disease. {ECO:0000269PubMed:9437321, ECO:0000269PubMed:9618168}. Note=The disease is caused by mutations affecting the gene represented in this entry.Peters anomaly (PETAN) [MIM:604229]: Consists of a central corneal leukoma, absence of the posterior corneal stroma and Descemet membrane, and a variable degree of iris and lenticular attachments to the central aspect of the posterior cornea. {ECO:0000269PubMed:10051017}. Note=The disease is caused by mutations affecting the gene represented in this entry.Ring dermoid of cornea (RDC) [MIM:180550]: An ocular disorder characterized by bilateral annular limbal dermoids (growths with a skin-like structure) with corneal and conjunctival extension. {ECO:0000269PubMed:15591271, ECO:0000269PubMed:22224469}. Note=The disease is caused by mutations affecting the gene represented in this entry.
Tissue Specificity
Comments
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 19 experimentally validated interaction(s) in this database.
They are also associated with 6 interaction(s) predicted by orthology.
Experimentally validated
Total 19 [view]
Protein-Protein 18 [view]
Protein-DNA 0
Protein-RNA 0
DNA-DNA 1 [view]
RNA-RNA 0
DNA-RNA 0
Predicted by orthology
Total 6 [view]
Gene Ontology

Molecular Function
Accession GO Term
GO:0000976 transcription regulatory region sequence-specific DNA binding
GO:0001078 RNA polymerase II core promoter proximal region sequence-specific DNA binding transcription factor activity involved in negative regulation of transcription
GO:0001085 RNA polymerase II transcription factor binding
GO:0001102 RNA polymerase II activating transcription factor binding
GO:0001105 RNA polymerase II transcription coactivator activity
GO:0001191 RNA polymerase II transcription factor binding transcription factor activity involved in negative regulation of transcription
GO:0003677 DNA binding
GO:0003700 sequence-specific DNA binding transcription factor activity
GO:0005515 protein binding
GO:0008134 transcription factor binding
GO:0042803 protein homodimerization activity
GO:0043021 ribonucleoprotein complex binding
GO:0043565 sequence-specific DNA binding
GO:0051219 phosphoprotein binding
Biological Process
GO:0000122 negative regulation of transcription from RNA polymerase II promoter
GO:0003253 cardiac neural crest cell migration involved in outflow tract morphogenesis
GO:0006355 regulation of transcription, DNA-templated
GO:0006357 regulation of transcription from RNA polymerase II promoter
GO:0007368 determination of left/right symmetry
GO:0035315 hair cell differentiation
GO:0035993 deltoid tuberosity development
GO:0042476 odontogenesis
GO:0043010 camera-type eye development
GO:0045944 positive regulation of transcription from RNA polymerase II promoter
GO:0048536 spleen development
GO:0060126 somatotropin secreting cell differentiation
GO:0060127 prolactin secreting cell differentiation
GO:0061072 iris morphogenesis
GO:0061325 cell proliferation involved in outflow tract morphogenesis
GO:0070986 left/right axis specification
Cellular Component
GO:0005634 nucleus
GO:0005667 transcription factor complex
Protein Structure and Domains
PDB ID
InterPro IPR001356 Homeobox domain
IPR003654 OAR domain
IPR009057 Homeodomain-like
IPR016233 Homeobox protein Pitx/unc30
IPR020479 Homeodomain, metazoa
PFAM PF00046
PF03826
PRINTS PR00024
PIRSF PIRSF000563
SMART SM00389
TIGRFAMs
Post-translational Modifications
Modification
Cross-References
SwissProt Q99697
PhosphoSite PhosphoSite-Q99697
TrEMBL D6RBG8
UniProt Splice Variant
Entrez Gene 5308
UniGene Hs.738484
RefSeq
HUGO HGNC:9005
OMIM 601542
CCDS CCDS3693
HPRD 03328
IMGT
EMBL AC017068 AF048720 AF048721 AF048722 AF238048 AK127829 AK291591 AK313987 BC013998 BC106010 CH471057 U69961
GenPept AAC16257 AAC39716 AAC39717 AAC39718 AAH13998 AAI06011 AAK15048 BAF84280 BAG36699 BAG54582 EAX06262 EAX06263 EAX06264