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UniProtKB/Swiss-Prot entry P07202


[Entry info] [Name and origin] [References] [Comments] [Cross-references] [Keywords] [Features] [Sequence] [Tools]

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Entry information
Entry name PERT_HUMAN
Primary accession number P07202
Secondary accession numbers P09934 P09935 Q8IUL0 Q8NF94 Q8NF95 Q8NF96 Q8NF97 Q8TCI9
Integrated into Swiss-Prot on April 1, 1988
Sequence was last modified on November 13, 2007 (Sequence version 4)
Annotations were last modified on    November 4, 2008 (Entry version 127)
Name and origin of the protein
Protein name Thyroid peroxidase [Precursor]
Synonyms TPO
EC 1.11.1.8
Gene name
Name: TPO
From
Homo sapiens (Human) [TaxID: 9606] 
Taxonomy Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia; Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae; Homo.
Protein existence 1: Evidence at protein level;
References
[1]
NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 2), AND VARIANTS PRO-725 AND ALA-847.
PubMed=3475693 [NCBI, ExPASy, EBI, Israel, Japan]
Kimura S., Kotani T., McBride O.W., Umeki K., Hirai K., Nakayama T., Ohtaki S.;
"Human thyroid peroxidase: complete cDNA and protein sequence, chromosome mapping, and identification of two alternately spliced mRNAs.";
Proc. Natl. Acad. Sci. U.S.A. 84:5555-5559(1987).
[2]
NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), AND VARIANTS PRO-725 AND ALA-847.
TISSUE=Thyroid;
DOI=10.1093/nar/15.16.6735; PubMed=3453124 [NCBI, ExPASy, EBI, Israel, Japan]
Libert F., Ruel J., Ludgate M., Swillens S., Alexander N., Vassart G., Dinsart C.;
"Complete nucleotide sequence of the human thyroperoxidase-microsomal antigen cDNA.";
Nucleic Acids Res. 15:6735-6735(1987).
[3]
NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1).
DOI=10.1021/bi00436a054; PubMed=2548579 [NCBI, ExPASy, EBI, Israel, Japan]
Kimura S., Hong Y.S., Kotani T., Ohtaki S., Kikkawa F.;
"Structure of the human thyroid peroxidase gene: comparison and relationship to the human myeloperoxidase gene.";
Biochemistry 28:4481-4489(1989).
[4]
NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2).
TISSUE=Thyroid;
DOI=10.1093/nar/18.3.670; PubMed=2308857 [NCBI, ExPASy, EBI, Israel, Japan]
Barnett P.S., Banga J.P., Watkins J., Huang G.C., Gluckman D.R.B., Page M.J., McGregor A.M.;
"Nucleotide sequence of the alternatively spliced human thyroid peroxidase cDNA, TPO-2.";
Nucleic Acids Res. 18:670-670(1990).
[5]
NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), AND VARIANT SER-257.
TISSUE=Thyroid;
Rapoport B.;
Submitted (APR-1999) to the EMBL/GenBank/DDBJ databases.
[6]
NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 5), AND VARIANTS SER-257; PRO-725 AND ALA-847.
TISSUE=Thyroid;
Hennen G.P., Igout A., Melen L.B.;
"Homo sapiens thyroid peroxidase (TPO) variant mRNA, alternatively spliced sequence.";
Submitted (JAN-2002) to the EMBL/GenBank/DDBJ databases.
[7]
PARTIAL NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 4; 5; 6; 2-3 AND 2-4), AND VARIANTS PRO-725 AND ALA-847.
TISSUE=Thyroid;
DOI=10.1074/jbc.M209513200; PubMed=12454013 [NCBI, ExPASy, EBI, Israel, Japan]
Ferrand M., Le Fourn V., Franc J.-L.;
"Increasing diversity of human thyroperoxidase generated by alternative splicing. Characterization by molecular cloning of new transcripts with single- and multispliced mRNAs.";
J. Biol. Chem. 278:3793-3800(2003).
[8]
NUCLEOTIDE SEQUENCE [MRNA] OF 217-496.
PubMed=3654979 [NCBI, ExPASy, EBI, Israel, Japan]
Seto P., Hirayu H., Magnusson R.P., Gestautas J., Portmann L., Degroot L.J., Rapoport B.;
"Isolation of a complementary DNA clone for thyroid microsomal antigen. Homology with the gene for thyroid peroxidase.";
J. Clin. Invest. 80:1205-1208(1987).
[9]
NUCLEOTIDE SEQUENCE [MRNA] OF 670-933 (ISOFORM 3), AND ALTERNATIVE SPLICING IN GRAVES' DISEASE.
TISSUE=Thyroid;
DOI=10.1016/0006-291X(90)92152-P; PubMed=2383265 [NCBI, ExPASy, EBI, Israel, Japan]
Zanelli E., Henry M., Charvet B., Malthiery Y.;
"Evidence for an alternate splicing in the thyroperoxidase messenger from patients with Graves' disease.";
Biochem. Biophys. Res. Commun. 170:735-741(1990).
[10]
INTERACTION WITH DUOX1; DUOX2 AND CYBA.
DOI=10.1074/jbc.M407709200; PubMed=15561711 [NCBI, ExPASy, EBI, Israel, Japan]
Wang D., De Deken X., Milenkovic M., Song Y., Pirson I., Dumont J.E., Miot F.;
"Identification of a novel partner of duox: EFP1, a thioredoxin-related protein.";
J. Biol. Chem. 280:3096-3103(2005).
[11]
VARIANTS CHDH2A ASP-453; SER-590 AND LYS-799, AND VARIANTS SER-257; SER-373; THR-398 AND PRO-725.
PubMed=7550241 [NCBI, ExPASy, EBI, Israel, Japan]
Bikker H., Vulsma T., Baas F., de Vijlder J.J.M.;
"Identification of five novel inactivating mutations in the human thyroid peroxidase gene by denaturing gradient gel electrophoresis.";
Hum. Mutat. 6:9-16(1995).
[12]
VARIANT CHDH2A PHE-447.
DOI=10.1210/jc.82.2.649; PubMed=9024270 [NCBI, ExPASy, EBI, Israel, Japan]
Bikker H., Baas F., De Vijlder J.J.M.;
"Molecular analysis of mutated thyroid peroxidase detected in patients with total iodide organification defects.";
J. Clin. Endocrinol. Metab. 82:649-653(1997).
[13]
VARIANT CHDH2A GLU-660.
PubMed=10468986 [NCBI, ExPASy, EBI, Israel, Japan]
Santos C.L.S., Bikker H., Rego K.G.M., Nascimento A.C., Tambascia M., De Vijlder J.J.M., Medeiros-Neto G.;
"A novel mutation in the TPO gene in goitrous hypothyroid patients with iodide organification defect.";
Clin. Endocrinol. (Oxf.) 51:165-172(1999).
[14]
VARIANTS CHDH2A GLN-648 AND LYS-799.
DOI=10.1210/jc.84.3.1061; PubMed=10084596 [NCBI, ExPASy, EBI, Israel, Japan]
Pannain S., Weiss R.E., Jackson C.E., Dian D., Beck J.C., Sheffield V.C., Cox N., Refetoff S.;
"Two different mutations in the thyroid peroxidase gene of a large inbred Amish kindred: power and limits of homozygosity mapping.";
J. Clin. Endocrinol. Metab. 84:1061-1071(1999).
[15]
VARIANT CHDH2A ASN-240, AND CHARACTERIZATION OF VARIANT CHDH2A ASN-240.
DOI=10.1677/joe.0.1600267; PubMed=9924196 [NCBI, ExPASy, EBI, Israel, Japan]
Kotani T., Umeki K., Yamamoto I., Maesaka H., Tachibana K., Ohtaki S.;
"A novel mutation in the human thyroid peroxidase gene resulting in a total iodide organification defect.";
J. Endocrinol. 160:267-273(1999).
[16]
VARIANTS CHDH2A THR-326; PHE-447; ASP-453; CYS-527; TRP-693 AND LYS-799.
DOI=10.1210/jc.85.10.3708; PubMed=11061528 [NCBI, ExPASy, EBI, Israel, Japan]
Bakker B., Bikker H., Vulsma T., de Randamie J.S.E., Wiedijk B.M., De Vijlder J.J.M.;
"Two decades of screening for congenital hypothyroidism in The Netherlands: TPO gene mutations in total iodide organification defects (an update).";
J. Clin. Endocrinol. Metab. 85:3708-3712(2000).
[17]
VARIANTS CHDH2A PRO-458 AND HIS-491.
DOI=10.1530/eje.0.1450019; PubMed=11415848 [NCBI, ExPASy, EBI, Israel, Japan]
Ambrugger P., Stoeva I., Biebermann H., Torresani T., Leitner C., Grueters A.;
"Novel mutations of the thyroid peroxidase gene in patients with permanent congenital hypothyroidism.";
Eur. J. Endocrinol. 145:19-24(2001).
[18]
VARIANTS CHDH2A TRP-665 AND ARG-771, AND CHARACTERIZATION OF VARIANTS CHDH2A TRP-665 AND ARG-771.
DOI=10.1530/eje.0.1460491; PubMed=11916616 [NCBI, ExPASy, EBI, Israel, Japan]
Umeki K., Kotani T., Kawano J., Suganuma T., Yamamoto I., Aratake Y., Furujo M., Ichiba Y.;
"Two novel missense mutations in the thyroid peroxidase gene, R665W and G771R, result in a localization defect and cause congenital hypothyroidism.";
Eur. J. Endocrinol. 146:491-498(2002).
[19]
VARIANT CHDH2A PRO-53.
DOI=10.1210/jc.2002-020153; PubMed=12213873 [NCBI, ExPASy, EBI, Israel, Japan]
Niu D.-M., Hwang B., Chu Y.-K., Liao C.-J., Wang P.-L., Lin C.-Y.;
"High prevalence of a novel mutation (2268 insT) of the thyroid peroxidase gene in Taiwanese patients with total iodide organification defect, and evidence for a founder effect.";
J. Clin. Endocrinol. Metab. 87:4208-4212(2002).
[20]
VARIANTS CHDH2A SER-493 AND TYR-796.
DOI=10.1677/joe.0.1720627; PubMed=11874711 [NCBI, ExPASy, EBI, Israel, Japan]
Wu J.-Y., Shu S.-G., Yang C.-F., Lee C.-C., Tsai F.-J.;
"Mutation analysis of thyroid peroxidase gene in Chinese patients with total iodide organification defect: identification of five novel mutations.";
J. Endocrinol. 172:627-635(2002).
[21]
VARIANT CHDH2A ILE-839.
DOI=10.1089/105072502320908277; PubMed=12490071 [NCBI, ExPASy, EBI, Israel, Japan]
Calaciura F., Miscio G., Coco A., Leonardi D., Cisternino C., Regalbuto C., Bozzali M., Maiorana R., Ranieri A., Carta A., Buscema M., Trischitta V., Sava L., Tassi V.;
"Genetics of specific phenotypes of congenital hypothyroidism: a population-based approach.";
Thyroid 12:945-951(2002).
[22]
VARIANTS CHDH2A CYS-533 AND ASP-574-575-LEU DEL, AND CHARACTERIZATION OF VARIANTS CHDH2A CYS-533 AND ASP-574-575-LEU DEL.
DOI=10.1046/j.1365-2265.2003.01823.x; PubMed=12864797 [NCBI, ExPASy, EBI, Israel, Japan]
Kotani T., Umeki K., Kawano J., Suganuma T., Hishinuma A., Ieiri T., Harada S.;
"Partial iodide organification defect caused by a novel mutation of the thyroid peroxidase gene in three siblings.";
Clin. Endocrinol. (Oxf.) 59:198-206(2003).
[23]
VARIANTS CHDH2A THR-307; MET-433; LEU-499 AND ARG-808.
DOI=10.1002/humu.9175; PubMed=12938097 [NCBI, ExPASy, EBI, Israel, Japan]
Rivolta C.M., Esperante S.A., Gruneiro-Papendieck L., Chiesa A., Moya C.M., Domene S., Varela V., Targovnik H.M.;
"Five novel inactivating mutations in the thyroid peroxidase gene responsible for congenital goiter and iodide organification defect.";
Hum. Mutat. 22:259-259(2003).
[24]
VARIANT CHDH2A TRP-693.
DOI=10.1210/jc.2002-021377; PubMed=12843174 [NCBI, ExPASy, EBI, Israel, Japan]
Fugazzola L., Cerutti N., Mannavola D., Vannucchi G., Fallini C., Persani L., Beck-Peccoz P.;
"Monoallelic expression of mutant thyroid peroxidase allele causing total iodide organification defect.";
J. Clin. Endocrinol. Metab. 88:3264-3271(2003).
[25]
VARIANT CHDH2A LYS-378.
DOI=10.1507/endocrj.52.643; PubMed=16284446 [NCBI, ExPASy, EBI, Israel, Japan]
Tajima T., Tsubaki J., Fujieda K.;
"Two novel mutations in the thyroid peroxidase gene with goitrous hypothyroidism.";
Endocr. J. 52:643-645(2005).
[26]
VARIANT CHDH2A ASP-453.
DOI=10.1210/jc.2006-0142; PubMed=16684826 [NCBI, ExPASy, EBI, Israel, Japan]
Pfarr N., Borck G., Turk A., Napiontek U., Keilmann A., Mueller-Forell W., Kopp P., Pohlenz J.;
"Goitrous congenital hypothyroidism and hearing impairment associated with mutations in the TPO and SLC26A4/PDS genes.";
J. Clin. Endocrinol. Metab. 91:2678-2681(2006).
Comments
  • FUNCTION: Iodination and coupling of the hormonogenic tyrosines in thyroglobulin to yield the thyroid hormones T(3) and T(4).
  • CATALYTIC ACTIVITY: 2 iodide + H2O2 + 2 H+ = 2 iodine + 2 H2O.
  • COFACTOR: Binds 1 calcium ion per heterodimer (By similarity).
  • COFACTOR: Binds 1 heme B (iron-protoporphyrin IX) group covalently per heterodimer (By similarity).
  • PATHWAY: Hormone biosynthesis; thyroid hormone biosynthesis.
  • SUBUNIT: Interacts with DUOX1, DUOX2 and CYBA.
  • SUBCELLULAR LOCATION: Membrane; Single-pass type I membrane protein.
  • ALTERNATIVE PRODUCTS: 8 named isoforms [FASTA] produced by alternative splicing. Additional isoforms seem to exist.
    Name1
    SynonymsTPO1
    Isoform IDP07202-1
    This is the isoform sequence displayed in this entry.
    Name2
    SynonymsTPO2
    Isoform IDP07202-2
    Note: Lacks exon 10. Found in normal thyroid tissues as well as Graves'tissues. Rapidly degraded after synthesis, does not reach the cell surface. Inactive.
    Features which should be applied to build the isoform sequence: VSP_004665.
    Name3
    SynonymsTPO3, Graves' disease, TPOzaninelli
    Isoform IDP07202-3
    Note: Lacks exon 16. Found in normal thyroid tissues as well as Graves'tissues. Found at the cell surface. Active.
    Features which should be applied to build the isoform sequence: VSP_004666.
    Name4
    SynonymsTPO4
    Isoform IDP07202-4
    Note: Lacks exon 14. Active.
    Features which should be applied to build the isoform sequence: VSP_007269.
    Name5
    SynonymsTPO5
    Isoform IDP07202-5
    Note: Lacks exon 8. Does not fold correctly. Does not reach the cell surface.
    Features which should be applied to build the isoform sequence: VSP_007268.
    Name6
    SynonymsTPO6
    Isoform IDP07202-6
    Note: Lacks exons 10, 12, 13, 14 and 16.
    Features which should be applied to build the isoform sequence: VSP_004665, VSP_007270.
    Name2-3
    Isoform IDP07202-7
    Note: Lacks exons 10 and 16.
    Features which should be applied to build the isoform sequence: VSP_004665, VSP_004666.
    Name2-4
    Isoform IDP07202-8
    Note: Lacks exons 10 and 14.
    Features which should be applied to build the isoform sequence: VSP_004665, VSP_007269.
  • PTM: Glycosylated.
  • PTM: Heme is covalently bound through a H(2)O(2)-dependent autocatalytic process. Heme insertion is important for the delivery of protein at the cell surface.
  • PTM: Cleaved in its N-terminal part.
  • DISEASE: An alternative splicing in the thyroperoxidase mRNA can cause Graves' disease.
  • DISEASE: Defects in TPO are the cause of congenital hypothyroidism due to dyshormonogenesis type 2A (CHDH2A) [MIM:274500]; also called genetic defect in thyroid hormonogenesis 2A or thyroid hormone organification defect II. CHDH2A is due to defective conversion of accumulated iodide to organically bound iodine. The iodide organification defect can be partial or complete.
  • SIMILARITY: Belongs to the peroxidase family. XPO subfamily.
  • SIMILARITY: Contains 1 EGF-like domain.
  • SIMILARITY: Contains 1 Sushi (CCP/SCR) domain.
  • WEB RESOURCE: Name=Wikipedia; Note=Thyroid peroxidase entry; URL="http://en.wikipedia.org/wiki/Thyroid_peroxidase";.
Copyright
Copyrighted by the UniProt Consortium, see http://www.uniprot.org/terms. Distributed under the Creative Commons Attribution-NoDerivs License.
Cross-references
Sequence databases
EMBL
J02969; AAA61215.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
J02970; AAA61216.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
Y00406; CAA68467.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25715; AAA97517.1; -; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25702; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25703; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25704; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25705; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25706; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25707; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25708; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25709; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25710; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25711; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25712; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25713; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M25714; AAA97517.1; JOINED; Genomic_DNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
X17358; CAA35235.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M17755; AAA61217.2; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AF439430; AAL74416.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AF533528; AAN04471.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AY136822; AAN11302.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AF533529; AAN04472.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AF533530; AAN04473.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
AF533531; AAN04474.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M55702; AAA61219.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
M55702; AAA61218.1; -; mRNA.[EMBL / GenBank / DDBJ] [CoDingSequence]
PIR A32413; OPHUIT.
RefSeq NP_000538.3; -.
NP_783650.1; -.
NP_783652.1; -.
NP_783653.1; -.
UniGene Hs.467554
3D structure databases
HSSP P05164; 1CXP. [HSSP ENTRY / PDB]
ModBase P07202.
Protein family/group databases
PeroxiBase 3318; HsTPO01.
Organism-specific databases
HGNC HGNC:12015; TPO.
GenAtlas TPO.
HPA CAB009587; -.
HPA007987; -.
MIM 274500; phenotype. [NCBI / EBI]
606765; gene. [NCBI / EBI]
Orphanet 442; Hypothyroidism, congenital.
PharmGKB PA36694; -.
GeneCards P07202.
Gene expression databases
ArrayExpress P07202; -.
GermOnline ENSG00000115705; Homo sapiens.
Ontologies
GO
GO:0005737; Cellular component: cytoplasm (inferred from direct assay from HPA).
GO:0005887; Cellular component: integral to plasma membrane (traceable author statement from ProtInc).
GO:0004601; Molecular function: peroxidase activity (traceable author statement from ProtInc).
QuickGo view.
Family and domain databases
InterPro IPR016060; Complement_control_module.
IPR000152; EGF-type_Asp/Asn_hydroxyl_CS.
IPR000742; EGF_3.
IPR001881; EGF_Ca_bd.
IPR013091; EGF_Ca_bd_2.
IPR013032; EGF_like_reg_CS.
IPR002007; Haem_peroxidase_animal.
IPR002016; Haem_peroxidase_pln/fun/bac.
IPR000436; Sushi_SCR_CCP.
Graphical view of domain structure.
Gene3D G3DSA:2.10.70.10; Complement_control_module; 1.
G3DSA:1.10.640.10; Haem_peroxidase_animal; 1.
Pfam PF03098; An_peroxidase; 1.
PF07645; EGF_CA; 1.
PF00084; Sushi; 1.
Pfam graphical view of domain structure.
PRINTS PR00457; ANPEROXIDASE.
SMART SM00032; CCP; 1.
SM00179; EGF_CA; 1.
SMART graphical view of domain structure.
PROSITE PS00010; ASX_HYDROXYL; 1.
PS00022; EGF_1; FALSE_NEG.
PS01186; EGF_2; 1.
PS50026; EGF_3; 1.
PS01187; EGF_CA; 1.
PS00435; PEROXIDASE_1; 1.
PS00436; PEROXIDASE_2; FALSE_NEG.
PS50292; PEROXIDASE_3; 1.
PS50923; SUSHI; 1.
PROSITE graphical view of domain structure (profiles).
BLOCKS P07202.
ProtoNet P07202.
Genome annotation databases
Ensembl ENSG00000115705; Homo sapiens. [Contig view]
GeneID 7173; -.
KEGG hsa:7173; -.
Phylogenomic databases
HOVERGEN P07202; -.
Other
DrugBank DB00389; Carbimazole.
DB00763; Methimazole.
DB00550; Propylthiouracil.
LinkHub P07202; -.
NextBio 28112; -.
SOURCE TPO; Homo sapiens.
UniRef View cluster of proteins with at least 50% / 90% / 100% identity.
Keywords
Alternative splicing; Calcium; Congenital hypothyroidism; Disease mutation; EGF-like domain; Glycoprotein; Heme; Hydrogen peroxide; Iron; Membrane; Metal-binding; Oxidoreductase; Peroxidase; Polymorphism; Signal; Sushi; Thyroid hormones biosynthesis; Transmembrane.
Features
SEVIEWER logo Feature table viewer FT aligner logo Feature aligner
KeyFrom   To Length Description FTId
SIGNAL   1    14  14     Potential. 
CHAIN   15   933  919     Thyroid peroxidase. PRO_0000023662
TOPO_DOM   15   846  832     Extracellular (Potential). 
TRANSMEM   847   871  25     Potential. 
TOPO_DOM   872   933  62     Cytoplasmic (Potential). 
DOMAIN   740   795  56     Sushi. 
DOMAIN   796   839  44     EGF-like; calcium-binding (Potential). 
ACT_SITE   239   239        Proton acceptor (By similarity). 
METAL   240   240        Calcium (By similarity). 
METAL   321   321        Calcium (By similarity). 
METAL   323   323        Calcium; via carbonyl oxygen (By similarity). 
METAL   325   325        Calcium (By similarity). 
METAL   327   327        Calcium (By similarity). 
METAL   494   494        Iron (heme axial ligand) (By similarity). 
BINDING   238   238        Heme (covalent; via 2 links) (By similarity). 
BINDING   399   399        Heme (covalent; via 2 links) (By similarity). 
SITE   396   396  1     Transition state stabilizer (By similarity). 
CARBOHYD   129   129        N-linked (GlcNAc...) (Potential). 
CARBOHYD   307   307        N-linked (GlcNAc...) (Potential). 
CARBOHYD   342   342        N-linked (GlcNAc...) (Potential). 
CARBOHYD   569   569        N-linked (GlcNAc...) (Potential). 
DISULFID   142   158        By similarity. 
DISULFID   259   269        By similarity. 
DISULFID   263   286        By similarity. 
DISULFID   598   655        By similarity. 
DISULFID   696   721        By similarity. 
DISULFID   800   814        By similarity. 
DISULFID   808   823        By similarity. 
DISULFID   825   838        By similarity. 
VAR_SEQ   274   446        Missing (in isoform 5). VSP_007268
VAR_SEQ   534   590        Missing (in isoform 2, isoform 2-3, isoform 2-4 and isoform 6). VSP_004665
VAR_SEQ   669   933        Missing (in isoform 6). VSP_007270
VAR_SEQ   796   839        Missing (in isoform 4 and isoform 2-4). VSP_007269
VAR_SEQ   874   933        TRTGTKSTLPISETGGGTPELRCGKHQAVGTSPQRAAAQD SEQESAGMEGRDTHRLPRAL -> RVLGWKAGILTGCREPSEGKVAGHCRTASCSQNHRTTLFQ TQANRKSAGRLFSQHG (in isoform 3 and isoform 2-3). VSP_004666
VARIANT   53    53  1     A -> P (in CHDH2A). VAR_021622 
VARIANT   240   240  1     D -> N (in CHDH2A; loss of activity). VAR_021623 
VARIANT   257   257  1     A -> S (in dbSNP:rs4927611 [NCBI]). VAR_006057 
VARIANT   307   307  1     N -> T (in CHDH2A). VAR_021624 
VARIANT   326   326  1     A -> T (in CHDH2A). VAR_021625 
VARIANT   373   373  1     A -> S (in dbSNP:rs2280132 [NCBI]). VAR_006058 
VARIANT   378   378  1     E -> K (in CHDH2A).<