P20742 (PZP_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
April 3, 2013.
Version 124.
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: Pregnancy zone protein Alternative name(s): C3 and PZP-like alpha-2-macroglobulin domain-containing protein 6 | ||||
| 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 | 1482 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 | Is able to inhibit all four classes of proteinases by a unique 'trapping' mechanism. This protein has a peptide stretch, called the 'bait region' which contains specific cleavage sites for different proteinases. When a proteinase cleaves the bait region, a conformational change is induced in the protein which traps the proteinase. The entrapped enzyme remains active against low molecular weight substrates (activity against high molecular weight substrates is greatly reduced). Following cleavage in the bait region a thioester bond is hydrolyzed and mediates the covalent binding of the protein to the proteinase. |
| Subunit structure | Homotetramer, which consists of two pairs of disulfide-linked chains. |
| Subcellular location | |
| Tissue specificity | Plasma. Prominent constituent of late-pregnancy sera. |
| Sequence similarities | Belongs to the protease inhibitor I39 (alpha-2-macroglobulin) family. [View classification] |
Ontologies
| Keywords | |
|---|---|
| Cellular component | Secreted |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Domain | Bait region Signal |
| Molecular function | Protease inhibitor Serine protease inhibitor |
| PTM | Disulfide bond Glycoprotein Thioester bond |
| Technical term | Complete proteome Direct protein sequencing Reference proteome |
| Gene Ontology (GO) | |
| Biological_process | female pregnancy Traceable author statement Ref.9. Source: UniProtKB |
| Cellular_component | extracellular space Inferred from electronic annotation. Source: InterPro extracellular vesicular exosomeInferred from direct assay PubMed 21362503. Source: UniProtKB |
| Molecular_function | endopeptidase inhibitor activity Traceable author statement Ref.6. Source: UniProtKB serine-type endopeptidase inhibitor activityInferred from electronic annotation. Source: UniProtKB-KW |
| Complete GO annotation... | |
Alternative products
| This entry describes 2 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: P20742-1) 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 2 (identifier: P20742-2) The sequence of this isoform differs from the canonical sequence as follows: 1-131: Missing. 132-142: TDKPMYKPGQT → MSESYRRTTFP 830-912: Missing. | ||||||
| Note: No experimental confirmation available. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||||
Molecule processing | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Signal peptide | 1 – 25 | 25 | Ref.4 | ||||||||
| Chain | 26 – 1482 | 1457 | Pregnancy zone protein | PRO_0000000063 | |||||||
Regions | |||||||||||
| Region | 685 – 735 | 51 | Bait region | ||||||||
Amino acid modifications | |||||||||||
| Glycosylation | 24 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 54 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 69 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 246 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 392 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 406 | 1 | N-linked (GlcNAc...) Ref.10 | ||||||||
| Glycosylation | 753 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 875 | 1 | N-linked (GlcNAc...) Potential | ||||||||
| Glycosylation | 932 | 1 | N-linked (GlcNAc...) Ref.10 | ||||||||
| Glycosylation | 997 | 1 | N-linked (GlcNAc...) Ref.10 Ref.11 | ||||||||
| Glycosylation | 1430 | 1 | N-linked (GlcNAc...) Ref.10 | ||||||||
| Cross-link | 978 ↔ 981 | Isoglutamyl cysteine thioester (Cys-Gln) | |||||||||
Natural variations | |||||||||||
| Alternative sequence | 1 – 131 | 131 | Missing in isoform 2. | VSP_030862 | |||||||
| Alternative sequence | 132 – 142 | 11 | TDKPMYKPGQT → MSESYRRTTFP in isoform 2. | VSP_030863 | |||||||
| Alternative sequence | 830 – 912 | 83 | Missing in isoform 2. | VSP_030864 | |||||||
| Natural variant | 379 | 1 | L → V. Corresponds to variant rs12230214 [ dbSNP | Ensembl ]. | VAR_034429 | |||||||
| Natural variant | 691 | 1 | V → M. Ref.5 Corresponds to variant rs3213832 [ dbSNP | Ensembl ]. | VAR_021845 | |||||||
| Natural variant | 813 | 1 | V → A. Corresponds to variant rs2277413 [ dbSNP | Ensembl ]. | VAR_020005 | |||||||
| Natural variant | 857 | 1 | N → S. Ref.1 Corresponds to variant rs3213831 [ dbSNP | Ensembl ]. | VAR_060733 | |||||||
| Natural variant | 1003 | 1 | T → M. Corresponds to variant rs57006764 [ dbSNP | Ensembl ]. | VAR_060982 | |||||||
| Natural variant | 1128 | 1 | R → H in a colorectal cancer sample; somatic mutation. Ref.13 | VAR_036235 | |||||||
| Natural variant | 1205 | 1 | T → P. Ref.3 Corresponds to variant rs2377741 [ dbSNP | Ensembl ]. | VAR_060734 | |||||||
| Natural variant | 1443 | 1 | I → N. Corresponds to variant rs10842971 [ dbSNP | Ensembl ]. | VAR_024358 | |||||||
Experimental info | |||||||||||
| Sequence conflict | 753 | 1 | N → Q AA sequence Ref.6 | ||||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Primary structure of pregnancy zone protein. Molecular cloning of a full-length PZP cDNA clone by the polymerase chain reaction." Devriendt K., van den Berghe H., Cassiman J.-J., Marynen P. Biochim. Biophys. Acta 1088:95-103(1991) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), VARIANT SER-857. |
| [2] | "The finished DNA sequence of human chromosome 12." Scherer S.E., Muzny D.M., Buhay C.J., Chen R., Cree A., Ding Y., Dugan-Rocha S., Gill R., Gunaratne P., Harris R.A., Hawes A.C., Hernandez J., Hodgson A.V., Hume J., Jackson A., Khan Z.M., Kovar-Smith C., Lewis L.R. Gibbs R.A.Nature 440:346-351(2006) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [3] | "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 2), VARIANT PRO-1205. |
| [4] | "Alpha-macroglobulin domain structure studied by specific limited proteolysis." Thomsen N.K., Sottrup-Jensen L. Arch. Biochem. Biophys. 300:327-334(1993) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 26-37; 222-230; 720-733; 896-902; 1003-1008; 1056-1061; 1184-1193; 1197-1224; 1277-1286 AND 1336-1344 (ISOFORM 1). |
| [5] | "A genetic polymorphism in a functional domain of human pregnancy zone protein: the bait region. Genomic structure of the bait domains of human pregnancy zone protein and alpha 2 macroglobulin." Marynen P., Devriendt K., van den Berghe H., Cassiman J.-J. FEBS Lett. 262:349-352(1990) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 668-753, VARIANT MET-691. Tissue: Placenta. |
| [6] | "The alpha-macroglobulin bait region. Sequence diversity and localization of cleavage sites for proteinases in five mammalian alpha-macroglobulins." Sottrup-Jensen L., Sand O., Kristensen L., Fey G.H. J. Biol. Chem. 264:15781-15789(1989) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 670-759. |
| [7] | "Characterization of human pregnancy zone protein. Comparison with human alpha 2-macroglobulin." Sand O., Folkersen J., Westergaard J.G., Sottrup-Jensen L. J. Biol. Chem. 260:15723-15735(1985) [PubMed] [Europe PMC] [Abstract] Cited for: PROTEIN SEQUENCE OF 974-983. |
| [8] | "A cluster of alpha 2-macroglobulin-related genes (alpha 2 M) on human chromosome 12p: cloning of the pregnancy-zone protein gene and an alpha 2M pseudogene." Devriendt K., Zhang J., van Leuven F., van den Berghe H., Cassiman J.-J., Marynen P. Gene 81:325-334(1989) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] OF 1259-1461. |
| [9] | "Pregnancy zone protein, a proteinase-binding macroglobulin. Interactions with proteinases and methylamine." Christensen U., Simonsen M., Harrit N., Sottrup-Jensen L. Biochemistry 28:9324-9331(1989) [PubMed] [Europe PMC] [Abstract] Cited for: INTERACTION WITH PROTEINASES AND METHYLAMINE. |
| [10] | "Human plasma N-glycoproteome analysis by immunoaffinity subtraction, hydrazide chemistry, and mass spectrometry." Liu T., Qian W.-J., Gritsenko M.A., Camp D.G. II, Monroe M.E., Moore R.J., Smith R.D. J. Proteome Res. 4:2070-2080(2005) [PubMed] [Europe PMC] [Abstract] Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-406; ASN-932; ASN-997 AND ASN-1430, MASS SPECTROMETRY. Tissue: Plasma. |
| [11] | "Glycoproteomics analysis of human liver tissue by combination of multiple enzyme digestion and hydrazide chemistry." Chen R., Jiang X., Sun D., Han G., Wang F., Ye M., Wang L., Zou H. J. Proteome Res. 8:651-661(2009) [PubMed] [Europe PMC] [Abstract] Cited for: GLYCOSYLATION [LARGE SCALE ANALYSIS] AT ASN-997, MASS SPECTROMETRY. Tissue: Liver. |
| [12] | "Initial characterization of the human central proteome." Burkard T.R., Planyavsky M., Kaupe I., Breitwieser F.P., Buerckstuemmer T., Bennett K.L., Superti-Furga G., Colinge J. BMC Syst. Biol. 5:17-17(2011) [PubMed] [Europe PMC] [Abstract] Cited for: IDENTIFICATION BY MASS SPECTROMETRY [LARGE SCALE ANALYSIS]. |
| [13] | "The consensus coding sequences of human breast and colorectal cancers." Sjoeblom T., Jones S., Wood L.D., Parsons D.W., Lin J., Barber T.D., Mandelker D., Leary R.J., Ptak J., Silliman N., Szabo S., Buckhaults P., Farrell C., Meeh P., Markowitz S.D., Willis J., Dawson D., Willson J.K.V. Velculescu V.E.Science 314:268-274(2006) [PubMed] [Europe PMC] [Abstract] Cited for: VARIANT [LARGE SCALE ANALYSIS] HIS-1128. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | X54380 mRNA. Translation: CAA38255.1. AC010175 Genomic DNA. No translation available. BC111756 mRNA. Translation: AAI11757.1. X51541 Genomic DNA. Translation: CAA35919.1. M24416 Genomic DNA. Translation: AAA60234.1. |
| IPI | IPI00025426. IPI00884981. |
| PIR | S13495. S29738. |
| UniGene | Hs.707491. |
3D structure databases | |
| ProteinModelPortal | P20742. |
| SMR | P20742. Positions 126-226, 1346-1474. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | 9606.ENSP00000261336. |
Protein family/group databases | |
| MEROPS | I39.003. |
PTM databases | |
| PhosphoSite | P20742. |
Polymorphism databases | |
| DMDM | 281185515. |
Proteomic databases | |
| PaxDb | P20742. |
| PRIDE | P20742. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000261336; ENSP00000261336; ENSG00000126838. ENST00000381997; ENSP00000371427; ENSG00000126838. |
| UCSC | uc001qvl.3. human. uc009zgl.3. human. |
Organism-specific databases | |
| GeneCards | GC12M009301. |
| H-InvDB | HIX0036869. |
| HGNC | HGNC:9750. PZP. |
| HPA | HPA041403. HPA041471. |
| MIM | 176420. gene. |
| neXtProt | NX_P20742. |
| GenAtlas | Search... |
Phylogenomic databases | |
| eggNOG | COG2373. |
| HOGENOM | HOG000220939. |
| HOVERGEN | HBG000039. |
| InParanoid | P20742. |
| OMA | WIWELVA. |
| OrthoDB | EOG4H9XJN. |
| PhylomeDB | P20742. |
Gene expression databases | |
| ArrayExpress | P20742. |
| Bgee | P20742. |
| Genevestigator | P20742. |
| GermOnline | ENSG00000126838. Homo sapiens. |
Family and domain databases | |
| Gene3D | 2.60.40.690. 1 hit. |
| InterPro | IPR009048. A-macroglobulin_rcpt-bd. IPR011626. A2M_comp. IPR002890. A2M_N. IPR011625. A2M_N_2. IPR001599. Macroglobln_a2. IPR019742. MacrogloblnA2_CS. IPR019565. MacrogloblnA2_thiol-ester-bond. IPR008930. Terpenoid_cyclase/PrenylTrfase. IPR010916. TonB_box_CS. [Graphical view] |
| Pfam | PF00207. A2M. 1 hit. PF07678. A2M_comp. 1 hit. PF01835. A2M_N. 1 hit. PF07703. A2M_N_2. 1 hit. PF07677. A2M_recep. 1 hit. PF10569. Thiol-ester_cl. 1 hit. [Graphical view] |
| SUPFAM | SSF49410. AM_receptor_bind. 1 hit. SSF48239. Terp_cyc_toroid. 1 hit. |
| PROSITE | PS00477. ALPHA_2_MACROGLOBULIN. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| SOURCE | Search... |
Entry information
| Entry name | PZP_HUMAN | ||||||||
| Accession | Primary (citable) accession number: P20742 Secondary accession number(s): A6ND27 Q7M4N7 | ||||||||
| 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 12 Human chromosome 12: 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
