Inter-alpha-inhibitor

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Inter-alpha-inhibitor
Substrate peptide name Inter-alpha-inhibitor
Synonyms Inter-alpha-trypsin inhibitor
Determination type In vitro
Source Homo sapiens
Subcellular localization Extracellular space
Swissprot ID P19827 - HC1

P19823 - HC2

O43291 - bikunin

Reactive glutamines HC1 - Q8, Q319, Q468

HC2 - Q90, Q203, Q204, Q299, Q315, Q420, Q431, Q438

Bikunin - Q74

Reactive lysines -
Substrate sequence QAVDTA

SEANLQAAQDF

QYYEGS

ALAQAR

KPTVAQQR

VIDFNQNIR

TQVADAK

NHGIAQR

QDTSSQLK

FYNQCSTPLLR

ECLQTCR

Structure 1BIK
Surface accessibility
Disorder prediction IUPred
Reference PMID:21939789
Notes Inter-α-inhibitor is cross-linked to the fibrin clot in a 1:20 ratio relative to the known

factor XIIIa substrate α2-antiplasmin. This interaction may protect fibrin or other Lys-donating

proteins from adventitious proteolysis by increasing the local concentration of bikunin.