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Recombinant Human MICA protein is a Human Fragment protein, in the 24 to 308 aa range, expressed in HEK 293, with >95% purity, < 1 EU/µg endotoxin level and suitable for SDS-PAGE, HPLC.

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Key facts

Purity
>95% SDS-PAGE
Endotoxin level
< 1 EU/µg
Expression system
HEK 293 cells
Tags
His tag C-Terminus
Applications
SDS-PAGE, HPLC
Biologically active
No

Amino acid sequence

E P H S L R Y N L T V L S W D G S V Q S G F L T E V H L D G Q P F L R C D R Q K C R A K P Q G Q W A E D V L G N K T W D R E T R D L T G N G K D L R M T L A H I K D Q K E G L H S L Q E I R V C E I H E D N S T R S S Q H F Y Y D G E L F L S Q N L E T K E W T M P Q S S R A Q T L A M N V R N F L K E D A M K T K T H Y H A M H A D C L Q E L R R Y L K S G V V L R R T V P P M V N V T R S E A S E G N I T V T C R A S G F Y P W N I T L S W R Q D G V S L S H D T Q Q W G D V L P D G N G T Y Q T W V A T R I C Q G E E Q R F T C Y M E H S G N H S T H P V P S G K V L V L Q S H W Q

Reactivity data

Application
SDS-PAGE
Reactivity
Reacts
Dilution info
-
Notes

-

Application
HPLC
Reactivity
Reacts
Dilution info
-
Notes

-

Associated Products

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Target data

Function

Widely expressed membrane-bound protein which acts as a ligand to stimulate an activating receptor KLRK1/NKG2D, expressed on the surface of essentially all human natural killer (NK), gammadelta T and CD8 alphabeta T-cells (PubMed:11491531, PubMed:11777960). Up-regulated in stressed conditions, such as viral and bacterial infections or DNA damage response, serves as signal of cellular stress, and engagement of KLRK1/NKG2D by MICA triggers NK-cells resulting in a range of immune effector functions, such as cytotoxicity and cytokine production (PubMed:10426993).

Alternative names

Recommended products

Recombinant Human MICA protein is a Human Fragment protein, in the 24 to 308 aa range, expressed in HEK 293, with >95% purity, < 1 EU/µg endotoxin level and suitable for SDS-PAGE, HPLC.

Key facts

Purity
>95% SDS-PAGE
Endotoxin level
< 1 EU/µg
Expression system
HEK 293 cells
Applications
SDS-PAGE, HPLC
Accession
Q29983-1
Animal free
No
Species
Human
Reconstitution
Reconstitute in PBS
Concentration
Loading...
Storage buffer

pH: 7.4
Constituents: 99% Phosphate Buffer, 0.88% Sodium chloride

Sequence info

Amino acid sequence

E P H S L R Y N L T V L S W D G S V Q S G F L T E V H L D G Q P F L R C D R Q K C R A K P Q G Q W A E D V L G N K T W D R E T R D L T G N G K D L R M T L A H I K D Q K E G L H S L Q E I R V C E I H E D N S T R S S Q H F Y Y D G E L F L S Q N L E T K E W T M P Q S S R A Q T L A M N V R N F L K E D A M K T K T H Y H A M H A D C L Q E L R R Y L K S G V V L R R T V P P M V N V T R S E A S E G N I T V T C R A S G F Y P W N I T L S W R Q D G V S L S H D T Q Q W G D V L P D G N G T Y Q T W V A T R I C Q G E E Q R F T C Y M E H S G N H S T H P V P S G K V L V L Q S H W Q
Accession
Q29983
Protein length
Fragment
Predicted molecular weight
32.8 kDa
Amino acids
24 to 308
Nature
Recombinant
Tags
His tag C-Terminus

Specifications

Form
Lyophilized
Additional notes

Purity is greater than 95% as determined by SEC-HPLC and reducing SDS-PAGE.

General info

Function

Widely expressed membrane-bound protein which acts as a ligand to stimulate an activating receptor KLRK1/NKG2D, expressed on the surface of essentially all human natural killer (NK), gammadelta T and CD8 alphabeta T-cells (PubMed:11491531, PubMed:11777960). Up-regulated in stressed conditions, such as viral and bacterial infections or DNA damage response, serves as signal of cellular stress, and engagement of KLRK1/NKG2D by MICA triggers NK-cells resulting in a range of immune effector functions, such as cytotoxicity and cytokine production (PubMed:10426993).

Sequence similarities

Belongs to the MHC class I family. MIC subfamily.

Post-translational modifications

N-glycosylated. Glycosylation is not essential for interaction with KLRK1/NKG2D but enhances complex formation.

Storage

Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
-80°C
Appropriate long-term storage conditions
-80°C

Supplementary info

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

MICA also known as MHC class I polypeptide-related sequence A is a protein encoded by the MICA gene. It has a molecular weight of approximately 62 kDa. MICA is a stress-induced ligand expressed on the surface of various cell types including epithelial cells fibroblasts and some tumor cells. This protein is part of the MHC class I chain-related (MIC) family which plays an important role in the immune system by interacting with natural killer (NK) cells and certain T cells.

Biological function summary

The MICA protein acts as a ligand for the NKG2D receptor an activating receptor found on NK cells and some T-cell subsets. MICA does not require expression as part of a complex with β2-microglobulin for function. When cells express MICA they signal distress allowing immune cells to target and destroy potentially harmful cells such as those infected with viruses or transformed into cancer cells. This interaction is an important component of the immune surveillance system.

Pathways

MICA functions within the natural cytotoxicity effector pathway heavily involved in immune responses. It is also relevant in the DNA damage response pathways. Within these pathways MICA interacts with proteins like NKG2D and plays a part in mediating cellular responses to stress and damage. These interactions enhance the capacity of immune cells to recognize and eliminate abnormal cells.

Associated diseases and disorders

MICA is associated with conditions such as psoriasis and certain types of cancer. Studies have shown increased levels of soluble MICA in the sera of patients with psoriasis indicating a role in inflammation. Additionally in cancer MICA expression affects tumor immunity connecting to the NKG2D receptor to influence immune cell targeting and destruction of tumor cells. Researchers use tools such as MICA ELISA kits and imaging techniques to study its role in these diseases.

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