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Entry version 92 (12 Aug 2020)
Sequence version 1 (01 May 1997)
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Protein

Inter-alpha-trypsin inhibitor heavy chain H2

Gene

ITIH2

Organism
Mesocricetus auratus (Golden hamster)
Status
Reviewed-Annotation score:

Annotation score:3 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

May act as a carrier of hyaluronan in serum or as a binding protein between hyaluronan and other matrix protein, including those on cell surfaces in tissues to regulate the localization, synthesis and degradation of hyaluronan which are essential to cells undergoing biological processes.By similarity

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionProtease inhibitor, Serine protease inhibitor

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Inter-alpha-trypsin inhibitor heavy chain H2
Short name:
ITI heavy chain H2
Short name:
ITI-HC2
Short name:
Inter-alpha-inhibitor heavy chain 2
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:ITIH2
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiMesocricetus auratus (Golden hamster)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri10036 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaMyomorphaMuroideaCricetidaeCricetinaeMesocricetus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000189706 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Genome assembly

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionGraphics by Christian Stolte & Seán O’Donoghue; Source: COMPARTMENTS

Keywords - Cellular componenti

Secreted

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section denotes the presence of an N-terminal signal peptide.<p><a href='/help/signal' target='_top'>More...</a></p>Signal peptidei1 – 18Sequence analysisAdd BLAST18
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section describes a propeptide, which is a part of a protein that is cleaved during maturation or activation. Once cleaved, a propeptide generally has no independent biological function.<p><a href='/help/propep' target='_top'>More...</a></p>PropeptideiPRO_000001652319 – 54By similarityAdd BLAST36
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_000001652455 – 702Inter-alpha-trypsin inhibitor heavy chain H2Add BLAST648
PropeptideiPRO_0000016525703 – 946By similarityAdd BLAST244

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei60PhosphoserineBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section specifies the position and type of each covalently attached glycan group (mono-, di-, or polysaccharide).<p><a href='/help/carbohyd' target='_top'>More...</a></p>Glycosylationi118N-linked (GlcNAc...) asparagineSequence analysis1
Glycosylationi263N-linked (GlcNAc...) asparagineSequence analysis1
Modified residuei2824-carboxyglutamateBy similarity1
Modified residuei2834-carboxyglutamateBy similarity1
Glycosylationi445N-linked (GlcNAc...) asparagineSequence analysis1
Modified residuei466PhosphoserineBy similarity1
Glycosylationi578N-linked (GlcNAc...) asparagineSequence analysis1
Modified residuei702Aspartate 1-(chondroitin 4-sulfate)-esterBy similarity1
Modified residuei886PhosphoserineBy similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Heavy chains are linked to bikunin via chondroitin 4-sulfate esterified to the alpha-carboxyl of the C-terminal aspartate after propeptide cleavage.By similarity
Phosphorylated by FAM20C in the extracellular medium.By similarity

Keywords - PTMi

Gamma-carboxyglutamic acid, Glycoprotein, Phosphoprotein, Proteoglycan

Proteomic databases

PRoteomics IDEntifications database

More...
PRIDEi
P97279

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

I-alpha-I plasma protease inhibitors are assembled from one or two heavy chains (H1, H2 or H3) and one light chain, bikunin. Inter-alpha-inhibitor (I-alpha-I) is composed of H1, H2 and bikunin, inter-alpha-like inhibitor (I-alpha-LI) of H2 and bikunin, and pre-alpha-inhibitor (P-alpha-I) of H3 and bikunin.

1 Publication

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
10036.XP_005071873.1

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P97279

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini56 – 185VITPROSITE-ProRule annotationAdd BLAST130
Domaini308 – 468VWFAPROSITE-ProRule annotationAdd BLAST161

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the ITIH family.Curated

Keywords - Domaini

Signal

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG502QPS2, Eukaryota

Database of Orthologous Groups

More...
OrthoDBi
955432at2759

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.40.50.410, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR010600, ITI_HC_C
IPR013694, VIT
IPR002035, VWF_A
IPR036465, vWFA_dom_sf

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF06668, ITI_HC_C, 1 hit
PF08487, VIT, 1 hit
PF00092, VWA, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM00609, VIT, 1 hit
SM00327, VWA, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF53300, SSF53300, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS51468, VIT, 1 hit
PS50234, VWFA, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P97279-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MQRLACVLIW LFLLEEQAFE IPANEYSEFA GYSNLVELAP DKFPFVQENR
60 70 80 90 100
RYQRSLPEES GEMTDNVDQV TLYSYKVQST ITSRMATTII QSKLVNNSPQ
110 120 130 140 150
SQNVVFDVQI PKGAFISNFT MTVNGITFTS TIREKTVGRA LYSQARAKGK
160 170 180 190 200
TAGWVRSRTL DMENFNTEVN IPPGAKVQFE LHYQEMKWRK LGSYEHKIHL
210 220 230 240 250
QPGRLAKHLE VNVWIVELQG MRFLHVPDTF EGHFQGVPVI SKGQKKSHVS
260 270 280 290 300
FKPTVAQQRK CPNCTYTAVD GELVVMYDVN REEKVGELEV FNGYFVHFFA
310 320 330 340 350
PENLDPIPKN ILFVIDVSGS MWGIKMKQTV EAMKTILDDL RTEDQFSVVD
360 370 380 390 400
FNHNVRTWRN DLVSATKTQI TDAKRYIEKI QPSGGTNINE ALLRAIFILN
410 420 430 440 450
EASNLGMLNP DSVSLIVLVS DGDPTVGELK LSKIQKNVKQ NIQDNISLFS
460 470 480 490 500
LGIGFDVDYD FLKRLSNENR GIAQRIYGNR DTSSQLKKFY NQVSTPLLRN
510 520 530 540 550
VQFNYPQASV TDVTQNSFHN YFGGSEIVVA GKYDPSKLAE VQSIITATST
560 570 580 590 600
NTELVLETLS QMDDLEDFLS KDKHADPNFT KKLWAYLTIN QLLAERSLAP
610 620 630 640 650
TAAIKRKITK TILQMSLDHH IVTPLTAMVI ENEAGDERML ADSPPQDHSC
660 670 680 690 700
CSGALYYGTK VASASIPSWA SPSPTPVMAM LAVGANRLES TPPPHVIRVE
710 720 730 740 750
NDPHFIIYLP KSQKNICFNI DSEPGKILSL VSDPESGILV NGQLIGAKKA
760 770 780 790 800
ENGKLRTYFG KLGFYFQKED MKIEISTENI TLINGSSTTS LFWSDTAHLG
810 820 830 840 850
NQRVLISVKK GKSVTLTLNK EMFFSVLLHH VWKKHPVNVD FLGIYLPPTN
860 870 880 890 900
KFSPSAHGLL GQFMNKPNIH IFNERPGKDP EKPEASMEVK GHKLTVTRGL
910 920 930 940
QKDYRTDIAF GTDVPCWFVH NSGKGFIDGH YKDYLVPQLY SFLKRP
Length:946
Mass (Da):106,581
Last modified:May 1, 1997 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:iCA8BF565458E7B2E
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti510V → Y AA sequence (PubMed:8864857).Curated1
Sequence conflicti595E → I AA sequence (PubMed:8864857).Curated1

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
D89286 mRNA Translation: BAA13939.1

Protein sequence database of the Protein Information Resource

More...
PIRi
JC5575

NCBI Reference Sequences

More...
RefSeqi
NP_001268591.1, NM_001281662.1

Genome annotation databases

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
101837243

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
D89286 mRNA Translation: BAA13939.1
PIRiJC5575
RefSeqiNP_001268591.1, NM_001281662.1

3D structure databases

SMRiP97279
ModBaseiSearch...

Protein-protein interaction databases

STRINGi10036.XP_005071873.1

Proteomic databases

PRIDEiP97279

Genome annotation databases

GeneIDi101837243

Organism-specific databases

Comparative Toxicogenomics Database

More...
CTDi
3698

Phylogenomic databases

eggNOGiENOG502QPS2, Eukaryota
OrthoDBi955432at2759

Family and domain databases

Gene3Di3.40.50.410, 1 hit
InterProiView protein in InterPro
IPR010600, ITI_HC_C
IPR013694, VIT
IPR002035, VWF_A
IPR036465, vWFA_dom_sf
PfamiView protein in Pfam
PF06668, ITI_HC_C, 1 hit
PF08487, VIT, 1 hit
PF00092, VWA, 1 hit
SMARTiView protein in SMART
SM00609, VIT, 1 hit
SM00327, VWA, 1 hit
SUPFAMiSSF53300, SSF53300, 1 hit
PROSITEiView protein in PROSITE
PS51468, VIT, 1 hit
PS50234, VWFA, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiITIH2_MESAU
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P97279
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 15, 1998
Last sequence update: May 1, 1997
Last modified: August 12, 2020
This is version 92 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Direct protein sequencing, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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