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AB78681

Recombinant Human Stromal interaction molecule 1 protein (Calmodulin tag N-Terminus)

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Recombinant Human Stromal interaction molecule 1 protein (Calmodulin tag N-Terminus) is a Human Fragment protein, in the 23 to 213 aa range, expressed in Escherichia coli, with >90%, suitable for SDS-PAGE.

View Alternative Names

GOK, STIM1, Stromal interaction molecule 1

1 Images
SDS-PAGE - Recombinant Human Stromal interaction molecule 1 protein (Calmodulin tag N-Terminus) (AB78681)
  • SDS-PAGE

Unknown

SDS-PAGE - Recombinant Human Stromal interaction molecule 1 protein (Calmodulin tag N-Terminus) (AB78681)

15% SDS-PAGE showing ab68681 at approximately 38kDa (3μg).

Key facts

Purity

>90% SDS-PAGE

Expression system

Escherichia coli

Tags

Calmodulin tag N-Terminus

Applications

SDS-PAGE

applications

Biologically active

No

Accession

Q13586

Animal free

No

Carrier free

No

Species

Human

Storage buffer

pH: 7.5 Constituents: 0.242% Tris

storage-buffer

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Complementary Products

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Primary Antibodies

AB108994

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RabMAb|Recombinant|KO Validated

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Proteins & Peptides

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Proteins & Peptides

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Reactivity", "Dilution Info", "Notes"] }, "values": { "SDS-PAGE": { "reactivity":"TESTED_AND_REACTS", "dilution-info":"", "notes":"<p></p>" } } }
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Sequence info

[{"sequence":"MADQLTEEQIAEFKEAFSLFDKDGDGTITTKELGTVMRSLGQNPTEAELQDMINEVDADGNGTIDFPEFLTMMARKMKDTDSEEEIREAFRVFDKDGNGYISAAELRHVMTNLGEKLTDEEVDEMIREADIDGDGQVNYEEFVQMMTAKGSMLSHSHSEKATGTSSGANSEESTAAEFCRIDKPLCHSEDEKLSFEAVRNIHKLMDDDANGDVDVEESDEFLREDLNYHDPTVKHSTFHGEDKLISVEDLWKAWKSSEVYNWTVDEVVQWLITYVELPQYEETFRKLQLSGHAMPRLAVTNTTMTGTVLKMTDRSHRQKLQLKALDTVLFGPPLLTRHNHLKD","proteinLength":"Fragment","predictedMolecularWeight":null,"actualMolecularWeight":null,"aminoAcidEnd":213,"aminoAcidStart":23,"nature":"Recombinant","expressionSystem":"Escherichia coli","accessionNumber":"Q13586","tags":[{"tag":"Calmodulin","terminus":"N-Terminus"}]}]
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Properties and storage information

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
-20°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
False
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Stromal interaction molecule 1 also known as STIM1 is a single-pass transmembrane protein primarily involved in the regulation of calcium ion entry into cells. It acts as a sensor of calcium levels inside the endoplasmic reticulum. STIM1 is about 90 kDa in mass and expresses in various tissues including the immune system skeletal muscle and vascular smooth muscle. The protein anchors in the membrane of the endoplasmic reticulum where it responds to the depletion of calcium by communicating with plasma membrane channels to activate calcium influx.
Biological function summary

STIM1 plays a critical role in the store-operated calcium entry (SOCE) mechanism a significant process in cellular calcium signaling. STIM1 senses calcium concentration within the endoplasmic reticulum and upon depletion aggregates and migrates to the plasma membrane to interact with Orai1 part of the calcium release-activated calcium (CRAC) channel complex. This interaction opens the channel allowing calcium ions to flow into the cytosol which is necessary for various cellular functions such as gene expression and cell proliferation.

Pathways

STIM1 functions integrally in the calcium signaling pathway a system central to numerous physiological processes. Here STIM1 ensures appropriate calcium ion concentrations facilitate activation of various transcription factors and enzymes. It closely associates with Orai1 triggering the CRAC channel activation in response to the endoplasmic reticulum calcium levels. Additionally STIM1 interacts with other signaling molecules like protein kinase C coordinating between different pathways to maintain cellular homeostasis.

STIM1 dysfunction links to conditions such as immunodeficiency and muscle disorders. Mutations in STIM1 can lead to combined immunodeficiency characterized by impaired immune responses due to faulty calcium influx in lymphocytes. Additionally aberrations in STIM1 activity associate with tubular aggregate myopathy a muscle disorder where abnormal calcium handling in muscle cells leads to muscle weakness and pain. In these diseases the interaction between STIM1 and Orai1 is often disrupted highlighting their roles in maintaining physiological processes.
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Specifications

Form

Liquid

Additional notes

ab78681 is purified using conventional chromatography techniques.

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General info

Function

Acts as a Ca(2+) sensor that gates two major inward rectifying Ca(2+) channels at the plasma membrane : Ca(2+) release-activated Ca(2+) (CRAC) channels and arachidonate-regulated Ca(2+)-selective (ARC) channels (PubMed : 15866891, PubMed : 16005298, PubMed : 16208375, PubMed : 16537481, PubMed : 16733527, PubMed : 16766533, PubMed : 16807233, PubMed : 18854159, PubMed : 19182790, PubMed : 19249086, PubMed : 19622606, PubMed : 19706554, PubMed : 22464749, PubMed : 24069340, PubMed : 24351972, PubMed : 24591628, PubMed : 25326555, PubMed : 26322679, PubMed : 28219928, PubMed : 32415068). Plays a role in mediating store-operated Ca(2+) entry (SOCE), a Ca(2+) influx following depletion of intracellular Ca(2+) stores. Upon Ca(2+) depletion, translocates from the endoplasmic reticulum to the plasma membrane where it activates CRAC channel pore-forming subunits ORA1, ORA2 and ORAI3 to generate sustained and oscillatory Ca(2+) entry (PubMed : 16208375, PubMed : 16537481, PubMed : 32415068). Involved in enamel formation (PubMed : 24621671).

Post-translational modifications

Glycosylation is required for cell surface expression.. Phosphorylated predominantly on Ser residues.

Subcellular localisation

Cytoskeleton

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Product protocols

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Target data

Acts as a Ca(2+) sensor that gates two major inward rectifying Ca(2+) channels at the plasma membrane : Ca(2+) release-activated Ca(2+) (CRAC) channels and arachidonate-regulated Ca(2+)-selective (ARC) channels (PubMed : 15866891, PubMed : 16005298, PubMed : 16208375, PubMed : 16537481, PubMed : 16733527, PubMed : 16766533, PubMed : 16807233, PubMed : 18854159, PubMed : 19182790, PubMed : 19249086, PubMed : 19622606, PubMed : 19706554, PubMed : 22464749, PubMed : 24069340, PubMed : 24351972, PubMed : 24591628, PubMed : 25326555, PubMed : 26322679, PubMed : 28219928, PubMed : 32415068). Plays a role in mediating store-operated Ca(2+) entry (SOCE), a Ca(2+) influx following depletion of intracellular Ca(2+) stores. Upon Ca(2+) depletion, translocates from the endoplasmic reticulum to the plasma membrane where it activates CRAC channel pore-forming subunits ORA1, ORA2 and ORAI3 to generate sustained and oscillatory Ca(2+) entry (PubMed : 16208375, PubMed : 16537481, PubMed : 32415068). Involved in enamel formation (PubMed : 24621671).
See full target information STIM1
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