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Protein

Calpastatin

Gene

CAST

Organism
Oryctolagus cuniculus (Rabbit)
Status
Reviewed-Annotation score: -Experimental evidence at protein leveli

Functioni

Specific inhibition of calpain (calcium-dependent cysteine protease). Plays a key role in postmortem tenderization of meat and have been proposed to be involved in muscle protein degradation in living tissue.

Miscellaneous

In erythrocytes the protein lacks the N-terminal region of the liver inhibitor but retains three inhibitory units.

GO - Molecular functioni

Keywordsi

Molecular functionProtease inhibitor, Thiol protease inhibitor

Protein family/group databases

MEROPSiI27.001

Names & Taxonomyi

Protein namesi
Recommended name:
Calpastatin
Alternative name(s):
Calpain inhibitor
Cleaved into the following chain:
Gene namesi
Name:CAST
OrganismiOryctolagus cuniculus (Rabbit)
Taxonomic identifieri9986 [NCBI]
Taxonomic lineageiEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresLagomorphaLeporidaeOryctolagus
Proteomesi
  • UP000001811 Componenti: Unplaced

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000041681 – 718CalpastatinAdd BLAST718
ChainiPRO_0000004169290 – 718Erythrocyte calpastatinAdd BLAST429

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Cross-linki32Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2)By similarity
Modified residuei49N6-acetyllysineBy similarity1
Modified residuei86PhosphoserineBy similarity1
Modified residuei133PhosphoserineBy similarity1
Modified residuei222PhosphoserineBy similarity1
Modified residuei243PhosphoserineBy similarity1
Modified residuei290Blocked amino end (Ser); in form erythrocyte1
Modified residuei367PhosphoserineBy similarity1
Modified residuei369PhosphoserineBy similarity1
Modified residuei376PhosphoserineBy similarity1
Modified residuei444PhosphoserineBy similarity1
Modified residuei520PhosphoserineBy similarity1
Modified residuei531PhosphoserineBy similarity1
Modified residuei579PhosphoserineBy similarity1
Modified residuei581PhosphoserineBy similarity1

Keywords - PTMi

Acetylation, Isopeptide bond, Phosphoprotein, Ubl conjugation

Proteomic databases

PRIDEiP08855

Interactioni

Protein-protein interaction databases

STRINGi9986.ENSOCUP00000006752

Structurei

3D structure databases

SMRiP08855
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Repeati170 – 222Inhibitory domain 1Add BLAST53
Repeati307 – 359Inhibitory domain 2Add BLAST53
Repeati450 – 503Inhibitory domain 3Add BLAST54
Repeati587 – 640Inhibitory domain 4Add BLAST54

Domaini

Each of the four flexible inhibitory domains can inhibit one calcium-bound calpain molecule by occupying both sides of the active site.By similarity

Sequence similaritiesi

Keywords - Domaini

Repeat

Phylogenomic databases

eggNOGiENOG410IFF9 Eukaryota
ENOG4111YF0 LUCA
HOGENOMiHOG000082405
HOVERGENiHBG000183
InParanoidiP08855
KOiK04281

Family and domain databases

InterProiView protein in InterPro
IPR026998 Calpastatin
IPR001259 Prot_inh_calpain
PANTHERiPTHR10077 PTHR10077, 1 hit
PfamiView protein in Pfam
PF00748 Calpain_inhib, 4 hits

Sequencei

Sequence statusi: Complete.

Sequence processingi: The displayed sequence is further processed into a mature form.

P08855-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MNPAEAKAVP ISKEMEGPHP HSKKRHRRQD AKTEPEKSQS TKPPVDHEKK
60 70 80 90 100
AQEGKPKEHT KPKSTHKHAS DGEGKHGRNE KTASRSKEPV TPAKRTEPET
110 120 130 140 150
KPQDTKPAGG KSVAAGTTAA PGKAGDPKKE KKSLPAAALA EPKPDEPSGK
160 170 180 190 200
SGMDAALDDL IDTLGEPSET QEDSTAYTGP EISDPMSSTY IEELGKREVT
210 220 230 240 250
IPPKYRELLE KKTGVAGPPP DSVTPLGPDD AIDALSSDFT CSSPVASGKE
260 270 280 290 300
AGKEAAKSAG EVLEAESAKV MRAAAPPQEK KRKVEEDAMS DQALEALSAS
310 320 330 340 350
LGTRMAEPEL DLSSIKEVAE AKRKEEKVEK CGEDDETVPA EYRLKPATDK
360 370 380 390 400
DGKPLLPEPA EKPKPRSESE LIDELSKDFS QAKSNEKQPK PTGKTEESKA
410 420 430 440 450
AVPAPVAEAV PRTSMCSIQP VPPKPASLQK STVPDDAVEA LAGSLGRKEA
460 470 480 490 500
DPEEGKPVAD KIKEKSKEEE REKLGEKEET IPPDYRLEEA KDKDGKPLLP
510 520 530 540 550
SEPTAQLPAL SEDLLLDALS EDFSGPSSAS SLKFDDAMLS AAVSEVVSQS
560 570 580 590 600
PASITRATAP PPDTRPSNKE LDDALDKLSD SLGQRQPDPD ENKPMEDKVK
610 620 630 640 650
ERAKKEHKDK LGERDDTIPP EYRHLLDQGE QDKPEKPPTK KSKEIKKPAG
660 670 680 690 700
DQDPIDALSG DLDSCPPAAE TSQATEKDKS KTTTASSSKA AKHGDKAKDS
710
AQTTEETSKP KANEKNAS
Length:718
Mass (Da):76,965
Last modified:November 1, 1988 - v1
Checksum:iB57F2B85D386A6BA
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
M16476 mRNA Translation: AAA31186.1
PIRiA26615
RefSeqiNP_001075739.1, NM_001082270.1
UniGeneiOcu.1838

Genome annotation databases

GeneIDi100009098
KEGGiocu:100009098

Similar proteinsi

Entry informationi

Entry nameiICAL_RABIT
AccessioniPrimary (citable) accession number: P08855
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1988
Last sequence update: November 1, 1988
Last modified: March 15, 2017
This is version 95 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Direct protein sequencing, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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