CREC (Cab45/reticulocalbin/ERC45/calumenin)-EF hand family protein; the family consists of a group of six EF-hand, low-affinity Ca2+-binding proteins, including reticulocalbin (RCN-1), ER Ca2+-binding protein of 55, reticulocalbin-3 (RCN-3), cab45 Ca2+-binding protein, and calumenin (also known as crocalbin or CBP-50); EF-hand (EFh) domain-containing protein may be involved in binding intracellular calcium and in calcium signal transduction
EF-hand, calcium binding motif, found in 45 kDa calcium-binding protein (Cab45); Cab45, also ...
60-340
1.86e-148
EF-hand, calcium binding motif, found in 45 kDa calcium-binding protein (Cab45); Cab45, also termed stromal cell-derived factor 4 (SDF-4), is a soluble, lumenal Golgi resident low-affinity Ca2+-binding protein that contains six copies of the EF-hand Ca2+-binding motif. It is required for secretory pathway calcium ATPase1 (SPCA1)-dependent Ca2+ import into the trans-Golgi network (TGN) and plays an essential role in Ca2+-dependent secretory cargo sorting at the TGN.
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Pssm-ID: 320023 [Multi-domain] Cd Length: 278 Bit Score: 419.78 E-value: 1.86e-148
EF-hand, calcium binding motif, found in 45 kDa calcium-binding protein (Cab45); Cab45, also ...
60-340
1.86e-148
EF-hand, calcium binding motif, found in 45 kDa calcium-binding protein (Cab45); Cab45, also termed stromal cell-derived factor 4 (SDF-4), is a soluble, lumenal Golgi resident low-affinity Ca2+-binding protein that contains six copies of the EF-hand Ca2+-binding motif. It is required for secretory pathway calcium ATPase1 (SPCA1)-dependent Ca2+ import into the trans-Golgi network (TGN) and plays an essential role in Ca2+-dependent secretory cargo sorting at the TGN.
Pssm-ID: 320023 [Multi-domain] Cd Length: 278 Bit Score: 419.78 E-value: 1.86e-148
EF-hand, calcium binding motif, found in 45 kDa calcium-binding protein (Cab45); Cab45, also ...
60-340
1.86e-148
EF-hand, calcium binding motif, found in 45 kDa calcium-binding protein (Cab45); Cab45, also termed stromal cell-derived factor 4 (SDF-4), is a soluble, lumenal Golgi resident low-affinity Ca2+-binding protein that contains six copies of the EF-hand Ca2+-binding motif. It is required for secretory pathway calcium ATPase1 (SPCA1)-dependent Ca2+ import into the trans-Golgi network (TGN) and plays an essential role in Ca2+-dependent secretory cargo sorting at the TGN.
Pssm-ID: 320023 [Multi-domain] Cd Length: 278 Bit Score: 419.78 E-value: 1.86e-148
EF-hand, calcium binding motif, found in CREC-EF hand family; The CREC (Cab45/reticulocalbin ...
60-340
8.87e-123
EF-hand, calcium binding motif, found in CREC-EF hand family; The CREC (Cab45/reticulocalbin/ERC45/calumenin)-EF hand family contains a group of six EF-hand, low-affinity Ca2+-binding proteins, including reticulocalbin (RCN-1), ER Ca2+-binding protein of 55 kDa (ERC-55, also known as TCBP-49 or E6BP), reticulocalbin-3 (RCN-3), Ca2+-binding protein of 45 kDa (Cab45 and its splice variant Cab45b), and calumenin ( also known as crocalbin or CBP-50). The proteins are not only localized in various parts of the secretory pathway, but also found in the cytosolic compartment and at the cell surface. They interact with different ligands or proteins and have been implicated in the secretory process, chaperone activity, signal transduction as well as in a large variety of disease processes.
Pssm-ID: 320021 [Multi-domain] Cd Length: 267 Bit Score: 354.44 E-value: 8.87e-123
EF-hand, calcium binding motif, found in calumenin, reticulocalbin-1 (RCN-1), reticulocalbin-3 ...
63-341
2.77e-43
EF-hand, calcium binding motif, found in calumenin, reticulocalbin-1 (RCN-1), reticulocalbin-3 (RCN-3), and similar proteins; The family corresponds to a group of six EF-hand Ca2+-binding proteins, including calumenin (also known as crocalbin or CBP-50), reticulocalbin-1 (RCN-1), reticulocalbin-3 (RCN-3), and similar proteins. Calumenin is an endo/sarcoplasmic reticulum (ER/SR) resident low-affinity Ca2+-binding protein that contains six EF-hand domains and a C-terminal SR retention signal His-Asp-Glu-Phe (HDEF) tetrapeptide. It functions as a novel regulator of SERCA2, and its expressional changes are tightly coupled with Ca2+-cycling of cardiomyocytes. It is also broadly involved in haemostasis and in the pathophysiology of thrombosis. Moreover, the extracellular calumenin acts as a suppressor of cell migration and tumor metastasis. RCN-1 is an endoplasmic reticulum resident Ca2+-binding protein with a carboxyl-terminal His-Asp-Glu-Leu (HDEL) tetrapeptide signal. It acts as a potential negative regulator of B-RAF activation and can negatively modulate cardiomyocyte hypertrophy by inhibition of the mitogen-activated protein kinase signalling cascade. It also plays a key role in the development of doxorubicin-associated resistance. RCN-3 is a putative six EF-hand Ca2+-binding protein that contains five RXXR (X is any amino acid) motifs and a C-terminal ER retrieval signal HDEL tetrapeptide. The RXXR motif represents the target sequence of subtilisin-like proprotein convertases (SPCs). RCN-3 is specifically bound to the paired basic amino-acid-cleaving enzyme-4 (PACE4) precursor protein and plays an important role in the biosynthesis of PACE4.
Pssm-ID: 320024 [Multi-domain] Cd Length: 264 Bit Score: 150.43 E-value: 2.77e-43
EF-hand, calcium binding motif, found in reticulocalbin-2 (RCN2) mainly from protostomes; This ...
63-341
7.31e-32
EF-hand, calcium binding motif, found in reticulocalbin-2 (RCN2) mainly from protostomes; This family corresponds to a group of uncharacterized RCN2-like proteins, which are mainly found in protostomes. Although their biological function remains unclear, they show high sequence similarity with RCN2 (also known as E6BP or TCBP-49), which is an endoplasmic reticulum resident low-affinity Ca2+-binding protein that has been implicated in immunity, redox homeostasis, cell cycle regulation and coagulation. Members in this family contain six copies of the EF-hand Ca2+-binding motif, but may lack a C-terminal His-Asp-Glu-Leu (HDEL) tetrapeptide that is required for retention of RCN2 in the endoplasmic reticulum (ER).
Pssm-ID: 320025 [Multi-domain] Cd Length: 263 Bit Score: 120.50 E-value: 7.31e-32
EF-hand, calcium binding motif, found in calumenin; Calumenin, also termed crocalbin, or IEF ...
63-341
2.15e-28
EF-hand, calcium binding motif, found in calumenin; Calumenin, also termed crocalbin, or IEF SSP 9302, is an endo/sarcoplasmic reticulum (ER/SR) resident low-affinity Ca2+-binding protein that contains six EF-hand domains and a C-terminal SR retention signal His-Asp-Glu-Phe (HDEF) tetrapeptide. It is highly expressed in various brain regions. Thus it plays an important role in migration and differentiation of neurons, and/or in Ca2+ signaling between glial cells and neurons. Calumenin is involved in Ca2+ homeostasis through interacting with ryanodine receptor RyR2 and SERCA2. It acts as a novel regulator of SERCA2, and its expressional changes are tightly coupled with Ca2+-cycling of cardiomyocytes. Calumenin also forms a Ca2+-dependent complex with thrombospondin-1, which is broadly involved in haemostasis and thrombosis. Moreover, calumenin is a molecular chaperone that endogenously regulates the vitamin K-dependent gamma-carboxylation of several proteins, including blood coagulation factors (such as FII, FVII, FIX, FX, and proteins C, S and Z), cell survival factors (Gas6) and bone metabolism proteins (such as matrix Gla protein or MGP, osteocalcin and periostin), through targeting the gamma-glutamyl carboxylase. It also functions as a charged F508del-cystic fibrosis transmembrane regulator (CFTR) folding modulator, as well as a G551D-CFTR associated protein. Furthermore, the extracellular calumenin acts as a suppressor of cell migration and tumor metastasis. It binds to and stabilizes fibulin-1, and further inactivates extracellular signal-regulated kinases 1 and 2 (ERK1/2) signaling.
Pssm-ID: 320026 [Multi-domain] Cd Length: 263 Bit Score: 111.19 E-value: 2.15e-28
EF-hand, calcium binding motif, found in reticulocalbin-2 (RCN2); RCN2, also termed ...
62-339
6.00e-28
EF-hand, calcium binding motif, found in reticulocalbin-2 (RCN2); RCN2, also termed calcium-binding protein ERC-55, or E6-binding protein (E6BP), or TCBP-49, is an endoplasmic reticulum resident low-affinity Ca2+-binding protein that has been implicated in immunity, redox homeostasis, cell cycle regulation and coagulation. It is associated with tumorigenesis, in particular with transformation of cells of the cervix induced by human papillomavirus (HPV), through binding to human papillomavirus (HPV) E6 oncogenic protein. It specifically interacts with vitamin D receptor among nuclear receptors. RCN2 contains an N-terminal signal sequence followed by six copies of the EF-hand Ca2+-binding motif, and a C-terminal His-Asp-Glu-Leu (HDEL) tetrapeptide that is required for retention of RCN2 in the endoplasmic reticulum (ER).
Pssm-ID: 320022 [Multi-domain] Cd Length: 268 Bit Score: 110.21 E-value: 6.00e-28
EF-hand, calcium binding motif, found in reticulocalbin-3 (RCN-3); RCN-3, also termed EF-hand ...
63-341
3.72e-24
EF-hand, calcium binding motif, found in reticulocalbin-3 (RCN-3); RCN-3, also termed EF-hand calcium-binding protein RLP49, is a putative six EF-hand Ca2+-binding protein that contains five RXXR (X is any amino acid) motifs and a C-terminal ER retrieval signal His-Asp-Glu-Leu (HDEL) tetrapeptide. The RXXR motif represents the target sequence of subtilisin-like proprotein convertases (SPCs). RCN-3 is specifically bound to the paired basic amino-acid-cleaving enzyme-4 (PACE4) precursor protein and plays an important role in the biosynthesis of PACE4.
Pssm-ID: 320028 [Multi-domain] Cd Length: 268 Bit Score: 99.66 E-value: 3.72e-24
EF-hand, calcium binding motif, found in reticulocalbin-1 (RCN-1); RCN-1 is an endoplasmic ...
70-341
4.52e-23
EF-hand, calcium binding motif, found in reticulocalbin-1 (RCN-1); RCN-1 is an endoplasmic reticulum resident low-affinity Ca2+-binding protein with six EF-hand motifs and a carboxyl-terminal His-Asp-Glu-Leu (HDEL) tetrapeptide signal. It is expressed at the cell surface. RCN-1 acts as a potential negative regulator of B-RAF activation and can negatively modulate cardiomyocyte hypertrophy by inhibition of the mitogen-activated protein kinase signaling cascade. It also plays a key role in the development of doxorubicin-associated resistance.
Pssm-ID: 320027 [Multi-domain] Cd Length: 267 Bit Score: 96.87 E-value: 4.52e-23
EF-hand, calcium binding motif; A diverse superfamily of calcium sensors and calcium signal ...
95-154
8.32e-06
EF-hand, calcium binding motif; A diverse superfamily of calcium sensors and calcium signal modulators; most examples in this alignment model have 2 active canonical EF hands. Ca2+ binding induces a conformational change in the EF-hand motif, leading to the activation or inactivation of target proteins. EF-hands tend to occur in pairs or higher copy numbers.
Pssm-ID: 238008 [Multi-domain] Cd Length: 63 Bit Score: 42.92 E-value: 8.32e-06
EF-hand, calcium binding motif; A diverse superfamily of calcium sensors and calcium signal ...
281-334
5.12e-05
EF-hand, calcium binding motif; A diverse superfamily of calcium sensors and calcium signal modulators; most examples in this alignment model have 2 active canonical EF hands. Ca2+ binding induces a conformational change in the EF-hand motif, leading to the activation or inactivation of target proteins. EF-hands tend to occur in pairs or higher copy numbers.
Pssm-ID: 238008 [Multi-domain] Cd Length: 63 Bit Score: 40.61 E-value: 5.12e-05
Database: CDSEARCH/cdd Low complexity filter: no Composition Based Adjustment: yes E-value threshold: 0.01
References:
Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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