The following text describes a protein:
Function:
Acts as a substrate for the production of iodinated thyroid hormones thyroxine (T4) and triiodothyronine (T3) (By similarity). The synthesis of T3 and T4 involves iodination of selected tyrosine residues of TG/thyroglobulin followed by their oxidative coupling (By similarity). Following TG re-internalization and lysosomal-mediated proteolysis, T3 and T4 are released from the polypeptide backbone leading to their secretion into the bloodstream (By similarity). One dimer produces 7 thyroid hormone molecules (By similarity).
Subcellular Localization:
Secreted. Note=Secreted into the thyroid follicle lumen. Localizes to colloid globules, a structure formed in the thyroid follicle lumen consisting of cross-linked TG arranged in concentric layers.
Domain:
The cholinesterase-like (ChEL) region is required for dimerization and export from the endoplasmic reticulum.
Sequence:
MMTLVLWVSTLLSSVCLVAANIFEYQVDAQPLRPCELQREKAFLKQDEYVPQCSEDGSFQTVQCQNDGQSCWCVDSDGTEVPGSRQLGRPTACLSFCQLHKQRILLSSYINSTDALYLPQCQDSGNYAPVQCDLQQVQCWCVDTEGMEVYGTRQQGRPTRCPRSCEIRSRRLLHGVGDKSPPQCDADGEFMPVQCKFVNTTDMMIFDLIHNYNRFPDAFVTFSAFRNRFPEVSGYCYCADSQGRELAETGLELLLDEIYDTIFAGLDQASTFTQSTMYRILQRRFLAIQLVISGRFRCPTKCEVEQFTATSFGHPYIPSCHRDGHYQTVQCQMERMCWCVDAQGIEIPGTRQQGQPLFCAKDQSCASERQQALSRLYFETPGYFSPQDLLSSEDRLVPVSGARLDISCPPRIKELFVDSGLLRSIAVERYQQLSESRSLLREAIRAIFPSRELAGLALQFTTNPKRLQQNLFGGTFLVNAAQLNLSGALGTRSTFNFSQFFQQFGLPGFLVRDRATDLAKLLPVSLDSSPTPVPLRVPEKRVAMNKSVVGTFGFKVNLQENQDALKFLVSLMELPEFLVFLQRAVSVPEDRARDLGDVMEMVFSAQACKQTSGRFFVPSCTAEGSYEDIQCYAGECWCVNSQGKEVEGSRVSGGHPRCPTKCEKQRAQMQNLAGAQPAGSSFFVPTCTSEGYFLPVQCFNSECYCVDAEGQVIPGTQSTIGEPKLCPSVCQLQAEQAFLGVVGVLLSNSSMVPPISSVYIPQCSTSGQWMPVQCDGPHEQVFEWYERWNTQNSDGQELTTATLLMKLMSYREVASTNFSLFLQSLYDAGQQSIFPVLAQYPSLQDVPQVVLEGATIQPGENIFLDPYIFWQILNGQLSQYPGPYSDFSMPLEHFNLRSCWCVDEAGQELDGTRTRAGEIPACPGPCEEVKFRVLKFIKETEEIVSASNASSFPLGESFLVAKGIQLTSEELGLPPLYPSREAFSEKFLRGSEYAIRLAAQSTLTFYQKLRASLGESNGTASLLWSGPYMPQCNTIGGWEPVQCHPGTGQCWCVDGWGELIPGSLMARSSQMPQCPTSCELSRANGLISAWKQAGHQRNPGPGDLFTPVCLQTGEYVRQQTSGTGAWCVDPSSGEGVPTNTNSSAQCPGLCDALKSRVLSRKVGLGYTPVCEALDGGFSPVQCDLAQGSCWCVLASGEEVPGTRVVGTQPACESPQCPLPFSGSDVTDGVVFCETASSSGVTTVQQCQLFCRQGLRNVFSPGPLICNLESQRWVTLPLPRACQRPQLWQTMQTQAHFQLLLPPGKMCSIDYSGLLQAFQVFILDELITRGFCQIQVKTFGTLVSRTVCDNSSIQVGCLTAERLGVNATWKLQLEDISVGSLPNLHSIERALMGQDLLGRFANLIQSGKFQLHLDSKTFSADTILYFLNGDRFVTSPMTQLGCLEGFYRVSTTSQDPLGCVKCPEGSFSQDGKCTPCPAGTYQGQAGSSACIPCPRGRTTTITGAFSKTHCVTDCQRDEAGLQCDQNGQYQANQKDMDSGEVFCVDSEGQRLQWLQTEAGLSESQCLMMRKFEKAPESKVIFDASSPVIVKSRVPSANSPLVQCLADCADDEACSFVTVSSMSSEVSCDLYSWTRDNFACVTSDQEEDAVDSLKETSFGSLRCQVKVRNSGKDSLAVYVKKGHEFTASGQKSFEPTGFQNVLSGLYSSVVFSALGTNLTDTHLFCLLACDQDSCCDGFIVTQVKEGPTICGLLSAPDILVCHINDWRDASDTQANGTCAGVTYDQGSRQMTMSLGGQEFLQGLTLLEGTQDSFISFQQVYLWKDSDIGSRPESMGCGRGMVPKSEAPEGADMATELFSPVDITQVIVNTSHSLPSQQYWLSTHLFSAEQANLWCLSRCAQEPVFCQLADIMESSSLYFTCSLYPEAQVCDNDVESNAKNCSQILPRQPTALFQRKVVLNDRVKNFYTRLPFQKLSGISIRDRIPMSEKLISNGFFECERLCDRDPCCTGFGFLNVSQMQGGEMTCLTLNSMGIQTCSEENGATWRILDCGSEDTEVHTYPFGWYQKPAVWSDAPSFCPSAALQSLTEEKVALDSWQTLALSSVIIDPSIKHFDVAHISISATRNFSLAQDFCLQECSRHQDCLVTTLQIQQGVVRCVFYPDIQSCEHSLRSKTCWLLLHEEAAYIYRKSGAPLHQSDGISTPSVHIDSFGQLQGGSQVVKVGTAWKQVYQFLGVPYAAPPLAENRFQAPEVLNWTGSWDATKLRSSCWQPGTRTPTPPQISEDCLYLNVFVPENLVSNASVLVFFHNTVEMEGSGGQLNIDGSILAAVGNLIVVTANYRLGVFGFLSSGSDEVAGNWGLLDQVAALTWVQTHIGAFGGDPQRVTLAADRGGADVASIHLLITRPTRLQLFRKALLMGGSALSPAAIISPDRAQQQAAALAKEVGCPNSSVQEVVSCFRQKPANILNEAQTKLLAVSGPFHYWGPVVDGQYLRELPSRRLKRPLPVKVDLLIGGSQDDGLINRAKAVKQFEESQGRTNSKTAFYQALQNSLGGEDSDARILAAAIWYYSLEHSTDDYASFSRALENATRDYFIICPIVNMASLWARRTRGNVFMYHVPESYGHGSLELLADVQYAFGLPFYSAYQGYFSTEEQSLSLKVMQYFSNFIRSGNPNYPHEFSQKAAEFATPWPDFVPGAGGESYKELSAQLPNRQGLKKADCSFWSKYIQTLKDADGAKDAQLTKSGEEDLEVGPGSEEDFSGSLEPVPKSYSK