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Information on EC 3.4.22.B24 - calpain 4 and Organism(s) Homo sapiens

for references in articles please use BRENDA:EC3.4.22.B24
preliminary BRENDA-supplied EC number
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EC Tree
     3 Hydrolases
         3.4 Acting on peptide bonds (peptidases)
             3.4.22 Cysteine endopeptidases
                3.4.22.B24 calpain 4
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This record set is specific for:
Homo sapiens
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Word Map
The taxonomic range for the selected organisms is: Homo sapiens
The enzyme appears in selected viruses and cellular organisms
Reaction Schemes
broad endopeptidase specificity
Synonyms
capn4, calpain small subunit 1, calpain 4, css-1, calpain regulatory subunit, more
SYNONYM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
calcium-activated neutral proteinase
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-
-
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calpain 4
-
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calpain regulatory subunit
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-
-
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calpain small subunit 1
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both of micro- and m-calpains are heterodimers, consisting of a distinct large 80000 Da catalytic subunit and a common small 28000 Da regulatory subunit termed Capn4
CANP
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-
-
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Capn4
CAS REGISTRY NUMBER
COMMENTARY hide
78990-62-2
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SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
peptide + H2O
hydrolyzed peptide
show the reaction diagram
-
-
-
?
additional information
?
-
limited proteolysis of substrates involved in cytoskeletal remodelling and signal transduction
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-
?
NATURAL SUBSTRATE
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
additional information
?
-
limited proteolysis of substrates involved in cytoskeletal remodelling and signal transduction
-
-
?
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
INHIBITOR
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
calpain inhibitor IV
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0.1 mg/ml, irreversible, attacks the active site of m-calpain nucleophilically, the association between calpain 4 and alpha-p21-activated kinase interacting exchange factor (alpha-PIX) is not impaired
calpeptin
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0.075 mg/ml, reversible, reacts with the active site of both my-calpain and m-calpain, the association between calpain 4 and alpha-p21-activated kinase interacting exchange factor (alpha-PIX) is not impaired
PD 151746
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0.1 mg/ml, reversible, binds predominantly to the Ca2+-binding site of my-calpain, the association between calpain 4 and alpha-p21-activated kinase interacting exchange factor (alpha-PIX) is not impaired
ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
LOCALIZATION
ORGANISM
UNIPROT
COMMENTARY hide
GeneOntology No.
LITERATURE
SOURCE
translocates to the plasma membrane upon Ca2+ binding
Manually annotated by BRENDA team
additional information
-
around the nucleus, colocalizes with alpha-p21-activated kinase interacting exchange factor (alpha-PIX)
-
Manually annotated by BRENDA team
GENERAL INFORMATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
physiological function
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Capn4 as a regulatory subunit is essential for micro- and m-calpain activity, the upregulation of Capn4 mediated by HBx contributes to migration of hepatoma cells
UNIPROT
ENTRY NAME
ORGANISM
NO. OF AA
NO. OF TRANSM. HELICES
MOLECULAR WEIGHT[Da]
SOURCE
SEQUENCE
LOCALIZATION PREDICTION?
CPNS1_HUMAN
268
0
28316
Swiss-Prot
other Location (Reliability: 1)
SUBUNIT
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
dimer
heterodimer of a large and a small subunit
CRYSTALLIZATION (Commentary)
ORGANISM
UNIPROT
LITERATURE
CLONED (Commentary)
ORGANISM
UNIPROT
LITERATURE
EXPRESSION
ORGANISM
UNIPROT
LITERATURE
HBx is able to upregulate the expression of Capn4 in human hepatoma HepG2 (or H7402) cells
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APPLICATION
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
medicine
REF.
AUTHORS
TITLE
JOURNAL
VOL.
PAGES
YEAR
ORGANISM (UNIPROT)
PUBMED ID
SOURCE
Boeckmann, B.; Bairoch, A.; Apweiler, R.; Blatter, M.C.; Estreicher, A.; Gasteiger, E.; Martin M.J.; Michoud, K.; O'Donovan, C.; Phan, I.; Pilbout, S.; Schneider, M.
The SWISS-PROT protein knowledgebase and its supplement TrEMBL
Nucleic Acids Res.
31
365-370
2003
Bos taurus (P13135), Homo sapiens (P04632), Mus musculus (O88456), Rattus norvegicus (Q64537), Sus scrofa (P04574)
Manually annotated by BRENDA team
Strobl S.; Fernandez-Catalan C.; Braun M.; Huber R.; Masumoto H.; Nakagawa K.; Irie A.; Sorimachi H.; Bourenkow G.; Bartunik H.; Suzuki K.; Bode W.
The crystal structure of calcium-free human m-calpain suggests an electrostatic switch mechanism for activation by calcium
Proc. Natl. Acad. Sci. USA
97
588-592
2000
Homo sapiens (P04632)
Manually annotated by BRENDA team
Strausberg R.L.; Feingold E.A.; Grouse L.H.; Derge J.G.; et al.
Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences
Proc. Natl. Acad. Sci. USA
99
16899-16903
2002
Homo sapiens (P04632), Mus musculus (O88456)
Manually annotated by BRENDA team
Ohno, S.; Emori, Y.; Suzuki, K.
Nucleotide sequence of a cDNA coding for the small subunit of human calcium-dependent protease
Nucleic Acids Res.
14
5559-5559
1986
Homo sapiens (P04632)
Manually annotated by BRENDA team
Miyake S.; Emori Y.; Suzuki K.
Gene organization of the small subunit of human calcium-activated neutral protease
Nucleic Acids Res.
14
8805-8817
1986
Homo sapiens (P04632)
Manually annotated by BRENDA team
Rosenberger, G.; Gal, A.; Kutsche, K.
AlphaPIX associates with calpain 4, the small subunit of calpain, and has a dual role in integrin-mediated cell spreading
J. Biol. Chem.
280
6879-6889
2005
Homo sapiens
Manually annotated by BRENDA team
Carragher, N.O.
Calpain inhibition: a therapeutic strategy targeting multiple disease states
Curr. Pharm. Des.
12
615-638
2006
Homo sapiens, Rattus norvegicus, Sus scrofa
Manually annotated by BRENDA team
Bai, D.S.; Dai, Z.; Zhou, J.; Liu, Y.K.; Qiu, S.J.; Tan, C.J.; Shi, Y.H.; Huang, C.; Wang, Z.; He, Y.F.; Fan, J.
Capn4 overexpression underlies tumor invasion and metastasis after liver transplantation for hepatocellular carcinoma
Hepatology
49
460-470
2009
Homo sapiens
Manually annotated by BRENDA team
Zhang, F.; Wang, Q.; Ye, L.; Feng, Y.; Zhang, X.
Hepatitis B virus X protein upregulates expression of calpain small subunit 1 via nuclear factor-kappaB/p65 in hepatoma cells
J. Med. Virol.
82
920-928
2010
Homo sapiens
Manually annotated by BRENDA team
Peng, P.; Min, L.; Song, S.; Zhao, J.; Li, L.; Yang, C.; Shao, M.; Zhang, M.; Wu, H.; Zhang, J.; Li, C.; Wang, X.; Wang, H.; Qin, J.; Ruan, Y.; Gu, J.
Elevated expression of calpain-4 predicts poor prognosis in patients with gastric cancer after gastrectomy
Int. J. Mol. Sci.
17
1612
2016
Homo sapiens
Manually annotated by BRENDA team