Q6PHW0 (IYD1_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 88.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Iodotyrosine dehalogenase 1 Short name=IYD-1 EC=1.22.1.1 | ||||
| Gene names |
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| Organism | Homo sapiens (Human) [Reference proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo![]() |
Protein attributes
| Sequence length | 289 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is further processed into a mature form. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Catalyzes the oxidative NADPH-dependent deiodination of monoiodotyrosine (L-MIT) or diiodotyrosine (L-DIT). Acts during the hydrolysis of thyroglobulin to liberate iodide, which can then reenter the hormone-producing pathways. Acts more efficiently on monoiodotyrosine than on diiodotyrosine. Ref.7 |
| Catalytic activity | L-tyrosine + 2 NADP+ + 2 I- = 3,5-diiodo-L-tyrosine + 2 NADPH. |
| Cofactor | FMN Probable. |
| Subunit structure | Homodimer By similarity. |
| Subcellular location | |
| Tissue specificity | Expressed at a high level in thyroid gland and at lower level in kidney and trachea. Ref.7 |
| Involvement in disease | Thyroid dyshormonogenesis 4 (TDH4) [MIM:274800]: A disorder due to thyroid dyshormonogenesis, causing severe hypothyroidism, goiter, excessive levels of iodotyrosine in serum and urine, and variable mental deficits derived from unrecognized and untreated hypothyroidism. |
| Sequence similarities | Belongs to the nitroreductase family. |
| Biophysicochemical properties | Kinetic parameters: KM=2.67 µM for L-DIT Ref.7 KM=1.35 µM for L-MIT |
| Sequence caution | The sequence AAY41467.1 differs from that shown. Reason: Erroneous translation. The sequence BAC85255.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence CAI20537.1 differs from that shown. Reason: Erroneous gene model prediction. |
Ontologies
| Keywords | |
|---|---|
| Cellular component | Cell membrane Membrane |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Disease | Congenital hypothyroidism Disease mutation |
| Domain | Signal Transmembrane Transmembrane helix |
| Ligand | FMN Flavoprotein NADP |
| Molecular function | Oxidoreductase |
| Technical term | Complete proteome Reference proteome |
| Gene Ontology (GO) | |
| Biological_process | cellular nitrogen compound metabolic process Traceable author statement. Source: Reactome thyroid hormone generationTraceable author statement. Source: Reactome |
| Cellular_component | integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW plasma membraneTraceable author statement. Source: Reactome |
| Molecular_function | oxidoreductase activity Inferred from electronic annotation. Source: UniProtKB-KW |
| Complete GO annotation... | |
Alternative products
| This entry describes 6 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q6PHW0-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 3 (identifier: Q6PHW0-3) Also known as: E; The sequence of this isoform differs from the canonical sequence as follows: 230-248: NAGLVTVTTTPLNCGPRLR → VFGKIILKELALISFLNL 249-289: Missing. | ||||||
| Isoform 4 (identifier: Q6PHW0-4) Also known as: B; The sequence of this isoform differs from the canonical sequence as follows: 230-289: NAGLVTVTTT...KPLDQIMVTV → VNNGITMRHQ...TEGAPGPPRT | ||||||
| Isoform 5 (identifier: Q6PHW0-5) Also known as: C; The sequence of this isoform differs from the canonical sequence as follows: 230-284: NAGLVTVTTT...PDLKRKPLDQ → VNNGITMRHQ...FHFAIEFAAP 285-289: Missing. | ||||||
| Isoform 6 (identifier: Q6PHW0-6) Also known as: D; The sequence of this isoform differs from the canonical sequence as follows: 230-270: NAGLVTVTTT...MLLPVGYPSK → VNNGITMRHQ...SSQGRPGFYC 271-289: Missing. | ||||||
| Isoform 7 (identifier: Q6PHW0-7) Also known as: F; The sequence of this isoform differs from the canonical sequence as follows: 1-55: Missing. 56-61: QAEEDA → MKEADV 230-248: NAGLVTVTTTPLNCGPRLR → VFGKIILKELALISFLNL 249-289: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 23 | 23 | Potential | ||||||
| Chain | 24 – 289 | 266 | Iodotyrosine dehalogenase 1 | PRO_0000230278 | |||||
Regions | |||||||||
| Topological domain | 24 – 214 | 191 | Extracellular Potential | ||||||
| Transmembrane | 215 – 235 | 21 | Helical; Potential | ||||||
| Topological domain | 236 – 289 | 54 | Cytoplasmic Potential | ||||||
| Nucleotide binding | 100 – 104 | 5 | FMN By similarity | ||||||
| Nucleotide binding | 127 – 129 | 3 | FMN By similarity | ||||||
| Nucleotide binding | 236 – 239 | 4 | FMN By similarity | ||||||
Sites | |||||||||
| Binding site | 104 | 1 | Substrate By similarity | ||||||
| Binding site | 161 | 1 | Substrate By similarity | ||||||
| Binding site | 182 | 1 | Substrate By similarity | ||||||
| Binding site | 279 | 1 | FMN By similarity | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 55 | 55 | Missing in isoform 7. | VSP_017802 | |||||
| Alternative sequence | 56 – 61 | 6 | QAEEDA → MKEADV in isoform 7. | VSP_017803 | |||||
| Alternative sequence | 230 – 289 | 60 | NAGLV…IMVTV → VNNGITMRHQTARHRHLIEG PGRSSEACSKLSSQGRPECR SGDCHYHSSQLWPSTEGAPG PPRT in isoform 4. | VSP_017805 | |||||
| Alternative sequence | 230 – 284 | 55 | NAGLV…KPLDQ → VNNGITMRHQTARHRHLIEG PGRSSEACSKLSSQGRPGAS AAGSLFHFAIEFAAP in isoform 5. | VSP_017806 | |||||
| Alternative sequence | 230 – 270 | 41 | NAGLV…GYPSK → VNNGITMRHQTARHRHLIEG PGRSSEACSKLSSQGRPGFY C in isoform 6. | VSP_017807 | |||||
| Alternative sequence | 230 – 248 | 19 | NAGLV…GPRLR → VFGKIILKELALISFLNL in isoform 3 and isoform 7. | VSP_017809 | |||||
| Alternative sequence | 249 – 289 | 41 | Missing in isoform 3 and isoform 7. | VSP_017810 | |||||
| Alternative sequence | 271 – 289 | 19 | Missing in isoform 6. | VSP_017812 | |||||
| Alternative sequence | 285 – 289 | 5 | Missing in isoform 5. | VSP_017813 | |||||
| Natural variant | 101 | 1 | R → W in TDH4; strongly reduces activity; does not respond to the increase of flavin mononucleotide concentration. Ref.8 | VAR_045963 | |||||
| Natural variant | 105 – 106 | 2 | FI → L in TDH4; strongly reduces activity; does not respond to the increase of flavin mononucleotide concentration. | VAR_045964 | |||||
| Natural variant | 116 | 1 | I → T in TDH4; strongly reduces activity; marginally respond to the increase of flavin mononucleotide concentration; reduces protein stability. Ref.8 | VAR_045965 | |||||
| Natural variant | 260 | 1 | L → P. Ref.5 Corresponds to variant rs17854906 [ dbSNP | Ensembl ]. | VAR_025785 | |||||
| Natural variant | 271 | 1 | E → K. Corresponds to variant rs36063028 [ dbSNP | Ensembl ]. | VAR_045966 | |||||
Experimental info | |||||||||
| Mutagenesis | 101 | 1 | R → A: Strongly reduces activity. Ref.8 | ||||||
| Mutagenesis | 101 | 1 | R → H: Reduces activity. Ref.8 | ||||||
| Mutagenesis | 105 | 1 | F → A: Activity as the wild type. Ref.8 | ||||||
| Mutagenesis | 105 | 1 | F → Y: Activity as the wild type. Ref.8 | ||||||
| Mutagenesis | 116 | 1 | I → V: Activity as the wild type. Ref.8 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Cloning and characterization of a novel thyroidal gene encoding proteins with a conserved nitroreductase domain." Moreno J.C., Keijser R., Aarraas S., De Vijlder J.J.M., Ris-Stalpers C. J. Endocrinol. Invest. 25 Suppl. 7:S23-S23(2002) Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). Tissue: Thyroid. |
| [2] | "Cloning and characterization of the human iodotyrosine dehalogenase isoform 1C." Gnidehou S., Ohayon R., Kaniewski J., Morand S., Noel-Hudson M.-S., Virion A., Dupuy C. Submitted (SEP-2003) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 5 AND 6). Tissue: Thyroid. |
| [3] | "New transcript variants of the human iodotyrosine dehalogenase gene." Rodrigues-Serpa A.R., Laires R.S., Monteiro C. Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 3; 4 AND 7). Tissue: Thyroid. |
| [4] | "The DNA sequence and analysis of human chromosome 6." Mungall A.J., Palmer S.A., Sims S.K., Edwards C.A., Ashurst J.L., Wilming L., Jones M.C., Horton R., Hunt S.E., Scott C.E., Gilbert J.G.R., Clamp M.E., Bethel G., Milne S., Ainscough R., Almeida J.P., Ambrose K.D., Andrews T.D. Beck S.Nature 425:805-811(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [5] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1), VARIANT PRO-260. Tissue: Kidney. |
| [6] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 11-289 (ISOFORM 1). Tissue: Kidney. |
| [7] | "Iodotyrosine dehalogenase 1 (DEHAL1) is a transmembrane protein involved in the recycling of iodide close to the thyroglobulin iodination site." Gnidehou S., Caillou B., Talbot M., Ohayon R., Kaniewski J., Noel-Hudson M.-S., Morand S., Agnangji D., Sezan A., Courtin F., Virion A., Dupuy C. FASEB J. 18:1574-1576(2004) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, BIOPHYSICOCHEMICAL PROPERTIES, TISSUE SPECIFICITY, SUBCELLULAR LOCATION. |
| [8] | "Mutations in the iodotyrosine deiodinase gene and hypothyroidism." Moreno J.C., Klootwijk W., van Toor H., Pinto G., D'Alessandro M., Leger A., Goudie D., Polak M., Grueters A., Visser T.J. N. Engl. J. Med. 358:1811-1818(2008) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANTS TDH4 TRP-101; 105-PHE-ISO-106 DELINS LEU AND THR-116, CHARACTERIZATION OF VARIANTS TDH4 TRP-101; 105-PHE-ISO-106 DELINS LEU AND THR-116, MUTAGENESIS OF ARG-101; PHE-105 AND ILE-116. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AY259176 mRNA. Translation: AAP22072.1. AY259177 mRNA. Translation: AAP22073.1. AY424901 mRNA. Translation: AAR84259.1. AY424902 mRNA. Translation: AAR84260.1. AY957659 mRNA. Translation: AAY41465.1. AY957660 mRNA. Translation: AAY41466.1. AY957661 mRNA. Translation: AAY41467.1. Sequence problems. AL031010 Genomic DNA. Translation: CAI20537.1. Sequence problems. BC056253 mRNA. Translation: AAH56253.1. AK129950 mRNA. Translation: BAC85255.1. Different initiation. |
| IPI | IPI00385533. IPI00465267. IPI00736489. IPI00737829. IPI00738915. IPI00940869. |
| RefSeq | NP_001158166.1. NM_001164694.1. NP_001158167.1. NM_001164695.1. NP_981932.1. NM_203395.2. |
| UniGene | Hs.310225. |
3D structure databases | |
| ProteinModelPortal | Q6PHW0. |
| ModBase | Search... |
PTM databases | |
| PhosphoSite | Q6PHW0. |
Polymorphism databases | |
| DMDM | 91207083. |
Proteomic databases | |
| PaxDb | Q6PHW0. |
| PRIDE | Q6PHW0. |
Protocols and materials databases | |
| DNASU | 389434. |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000344419; ENSP00000343763; ENSG00000009765. ENST00000367335; ENSP00000356304; ENSG00000009765. ENST00000392256; ENSP00000376085; ENSG00000009765. |
| GeneID | 389434. |
| KEGG | hsa:389434. |
| UCSC | uc003qnu.2. human. uc003qnv.2. human. |
Organism-specific databases | |
| CTD | 389434. |
| GeneCards | GC06P150731. |
| H-InvDB | HIX0025059. |
| HGNC | HGNC:21071. IYD. |
| MIM | 274800. phenotype. 612025. gene. |
| neXtProt | NX_Q6PHW0. |
| Orphanet | 95716. Familial thyroid dyshormonogenesis. |
| PharmGKB | PA162392352. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | COG0778. |
| HOVERGEN | HBG055004. |
| OMA | HQPWHFV. |
Enzyme and pathway databases | |
| Reactome | REACT_111217. Metabolism. |
Gene expression databases | |
| ArrayExpress | Q6PHW0. |
| Bgee | Q6PHW0. |
| Genevestigator | Q6PHW0. |
| GermOnline | ENSG00000009765. Homo sapiens. |
Family and domain databases | |
| Gene3D | 3.40.109.10. 1 hit. |
| InterPro | IPR000415. Nitroreductase-like. [Graphical view] |
| Pfam | PF00881. Nitroreductase. 1 hit. [Graphical view] |
| SUPFAM | SSF55469. Nitroreductase. 1 hit. |
| ProtoNet | Search... |
Other | |
| GenomeRNAi | 389434. |
| NextBio | 102878. |
| SOURCE | Search... |
Entry information
| Entry name | IYD1_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q6PHW0 Secondary accession number(s): Q2VPW0 Q7Z7D8 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 6 Human chromosome 6: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
