HPT_PONAB
ID HPT_PONAB Reviewed; 347 AA.
AC Q5R5F6; Q5NVR4;
DT 05-JUL-2005, integrated into UniProtKB/Swiss-Prot.
DT 21-DEC-2004, sequence version 1.
DT 03-AUG-2022, entry version 81.
DE RecName: Full=Haptoglobin;
DE Contains:
DE RecName: Full=Haptoglobin alpha chain;
DE Contains:
DE RecName: Full=Haptoglobin beta chain;
DE Flags: Precursor;
GN Name=HP;
OS Pongo abelii (Sumatran orangutan) (Pongo pygmaeus abelii).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC Eutheria; Euarchontoglires; Primates; Haplorrhini; Catarrhini; Hominidae;
OC Pongo.
OX NCBI_TaxID=9601;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC TISSUE=Liver;
RG The German cDNA consortium;
RL Submitted (NOV-2004) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: As a result of hemolysis, hemoglobin is found to accumulate
CC in the kidney and is secreted in the urine. Haptoglobin captures, and
CC combines with free plasma hemoglobin to allow hepatic recycling of heme
CC iron and to prevent kidney damage. Haptoglobin also acts as an
CC antioxidant, has antibacterial activity and plays a role in modulating
CC many aspects of the acute phase response. Hemoglobin/haptoglobin
CC complexes are rapidly cleared by the macrophage CD163 scavenger
CC receptor expressed on the surface of liver Kupfer cells through an
CC endocytic lysosomal degradation pathway (By similarity). {ECO:0000250}.
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains; disulfide-linked
CC (By similarity). The hemoglobin/haptoglobin complex is composed of a
CC haptoglobin dimer bound to two hemoglobin alpha-beta dimers (By
CC similarity). Interacts with CD163 (By similarity). Interacts with
CC ERGIC3 (By similarity). {ECO:0000250|UniProtKB:P00738,
CC ECO:0000250|UniProtKB:Q8SPS7}.
CC -!- SUBCELLULAR LOCATION: Secreted {ECO:0000250}.
CC -!- DOMAIN: The beta chain mediates most of the interactions with both
CC subunits of hemoglobin, while the alpha chain forms the homodimeric
CC interface. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the peptidase S1 family. {ECO:0000255|PROSITE-
CC ProRule:PRU00274}.
CC -!- CAUTION: Although homologous to serine proteases, it has lost all
CC essential catalytic residues and has no enzymatic activity.
CC {ECO:0000305}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CR860905; CAH93010.1; -; mRNA.
DR EMBL; CR925941; CAI29599.1; -; mRNA.
DR RefSeq; NP_001126778.1; NM_001133306.1.
DR AlphaFoldDB; Q5R5F6; -.
DR SMR; Q5R5F6; -.
DR STRING; 9601.ENSPPYP00000008491; -.
DR MEROPS; S01.972; -.
DR PRIDE; Q5R5F6; -.
DR GeneID; 100173782; -.
DR KEGG; pon:100173782; -.
DR CTD; 3240; -.
DR eggNOG; KOG3627; Eukaryota.
DR InParanoid; Q5R5F6; -.
DR OrthoDB; 798576at2759; -.
DR Proteomes; UP000001595; Unplaced.
DR GO; GO:0005576; C:extracellular region; IEA:UniProtKB-SubCell.
DR GO; GO:0016209; F:antioxidant activity; IEA:UniProtKB-KW.
DR GO; GO:0030492; F:hemoglobin binding; IEA:UniProtKB-KW.
DR GO; GO:0006953; P:acute-phase response; IEA:UniProtKB-KW.
DR GO; GO:0042742; P:defense response to bacterium; IEA:UniProtKB-KW.
DR GO; GO:0002376; P:immune system process; IEA:UniProtKB-KW.
DR CDD; cd00033; CCP; 1.
DR CDD; cd00190; Tryp_SPc; 1.
DR Gene3D; 2.40.10.10; -; 2.
DR InterPro; IPR008292; Haptoglobin.
DR InterPro; IPR009003; Peptidase_S1_PA.
DR InterPro; IPR043504; Peptidase_S1_PA_chymotrypsin.
DR InterPro; IPR001314; Peptidase_S1A.
DR InterPro; IPR035976; Sushi/SCR/CCP_sf.
DR InterPro; IPR000436; Sushi_SCR_CCP_dom.
DR InterPro; IPR001254; Trypsin_dom.
DR PANTHER; PTHR24255:SF27; PTHR24255:SF27; 1.
DR Pfam; PF00089; Trypsin; 1.
DR PIRSF; PIRSF001137; Haptoglobin; 1.
DR PRINTS; PR00722; CHYMOTRYPSIN.
DR SMART; SM00020; Tryp_SPc; 1.
DR SUPFAM; SSF50494; SSF50494; 1.
DR SUPFAM; SSF57535; SSF57535; 1.
DR PROSITE; PS50923; SUSHI; 1.
DR PROSITE; PS50240; TRYPSIN_DOM; 1.
PE 2: Evidence at transcript level;
KW Acute phase; Antibiotic; Antimicrobial; Antioxidant; Disulfide bond;
KW Glycoprotein; Hemoglobin-binding; Immunity; Reference proteome; Secreted;
KW Serine protease homolog; Signal; Sushi.
FT SIGNAL 1..18
FT /evidence="ECO:0000255"
FT CHAIN 19..347
FT /note="Haptoglobin"
FT /id="PRO_0000028477"
FT CHAIN 19..101
FT /note="Haptoglobin alpha chain"
FT /id="PRO_0000028478"
FT CHAIN 103..347
FT /note="Haptoglobin beta chain"
FT /id="PRO_0000028479"
FT DOMAIN 31..88
FT /note="Sushi"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00302"
FT DOMAIN 103..347
FT /note="Peptidase S1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274"
FT REGION 259..264
FT /note="Interaction with CD163"
FT /evidence="ECO:0000250"
FT CARBOHYD 125
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000250"
FT CARBOHYD 148
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000250"
FT CARBOHYD 152
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000250"
FT CARBOHYD 182
FT /note="N-linked (GlcNAc...) asparagine"
FT /evidence="ECO:0000250"
FT DISULFID 33
FT /note="Interchain"
FT /evidence="ECO:0000250"
FT DISULFID 52..86
FT /evidence="ECO:0000250"
FT DISULFID 90..207
FT /note="Interchain (between alpha and beta chains)"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00274,
FT ECO:0000255|PROSITE-ProRule:PRU00302"
FT DISULFID 250..281
FT /evidence="ECO:0000250"
FT DISULFID 292..322
FT /evidence="ECO:0000250"
FT CONFLICT 26
FT /note="M -> T (in Ref. 1; CAI29599)"
FT /evidence="ECO:0000305"
FT CONFLICT 235
FT /note="E -> D (in Ref. 1; CAI29599)"
FT /evidence="ECO:0000305"
SQ SEQUENCE 347 AA; 38496 MW; 29D9494FBDADAFC9 CRC64;
MSALGAVIAL LLWGQLFAVD SGNDVMDISD DGCPKPPQIA HGYVEHSVRY QCKNYYRLRT
EGDGVYTLNS EKQWINKAVG DKLPECEAVC GKPKNPANPV QRILGGHLDA KGSFPWQAKM
VSRHNLTTGA TLINEQWLLT TAKNLFLNHS ENATAKDIAP TLTLYVGKKQ LVEIEKVVLH
PNYSQVDIGL IKLKQKVPVN ERVMPICLPS KDYAEVGRVG YVSGWGRNAN FKFTEHLKYV
MLPVADQDQC VRHYEGSTVP EKKTPKSPVG VQPILNEHTF CAGMSKYQED TCYGDAGSAF
AVHDLEEDTW YAAGILSFDK SCAVAEYGVY VKVTSIQDWV QKTIAKN
