KALA

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KALA;

KALA 是一种在生理 pH 下形成 α-螺旋结构的两亲性肽。KALA 修饰了包裹质粒 DNA 的脂质体膜，也可以用作融合肽，通过半乳糖实现有效的肝靶向和受体转染 DNA。

KALAamp;;

KALA Chemical Structure

CAS No. : 187987-64-0

规格 是否有货
100 mg ; 询价 ;
250 mg ; 询价 ;
500 mg ; 询价 ;

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生物活性

KALA is an amphiphilic peptide that forms an α-helical structure at physiological pH. KALA modifies a plasmid DNA-encapsulating liposomal membrane and is used as a fusogenic peptide in order to achieve effective liver targeting and transfection of DNA via galactose receptors[1].

体外研究
(In Vitro)

When a plasmid DNA-encapsulating liposomal membrane is modified with the KALA peptide, transgene expression and immune activation are facilitated in bone marrow-derived dendritic cells (BMDCs)[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.
Clinical Trial

分子量

3131.82

Formula

C144H248N40O35S
CAS 号

187987-64-0
Sequence

Trp-Glu-Ala-Lys-Leu-Ala-Lys-Ala-Leu-Ala-Lys-Ala-Leu-Ala-Lys-His-Leu-Ala-Lys-Ala-Leu-Ala-Lys-Ala-Leu-Lys-Ala-Cys-Glu-Ala
Sequence Shortening

WEAKLAKALAKALAKHLAKALAKALKACEA
运输条件

Room temperature in continental US; may vary elsewhere.
储存方式

Please store the product under the recommended conditions in the Certificate of Analysis.
Solvent Solubility
In Vitro:;

H2O

Peptide Solubility and Storage Guidelines:

1.;;Calculate the length of the peptide.

2.;;Calculate the overall charge of the entire peptide according to the following table:

; Contents Assign value
Acidic amino acid Asp (D), Glu (E), and the C-terminal -COOH. -1
Basic amino acid Arg (R), Lys (K), His (H), and the N-terminal -NH2 +1
Neutral amino acid Gly (G), Ala (A), Leu (L), Ile (I), Val (V), Cys (C), Met (M), Thr (T), Ser (S), Phe (F), Tyr (Y), Trp (W), Pro (P), Asn (N), Gln (Q) 0

3.;;Recommended solution:

Overall charge of peptide Details
Negative (lt;0) 1.;;Try to dissolve the peptide in water first.
2.;;If water fails, add NH4OH (lt;50 μL).
3.;;If the peptide still does not dissolve, add DMSO (50-100 μL) to solubilize the peptide.
Positive (gt;0) 1.;;Try to dissolve the peptide in water first.
2.;;If water fails, try dissolving the peptide in a 10%-30% acetic acid solution.
3.;;If the peptide still does not dissolve, try dissolving the peptide in a small amount of DMSO.
Zero (=0) 1.;;Try to dissolve the peptide in organic solvent (acetonitrile, methanol, etc.) first.
2.;;For very hydrophobic peptides, try dissolving the peptide in a small amount of DMSO, and then dilute the solution with water to the desired concentration.
参考文献

  • [1]. Naoya Miura, et al. Identification and Evaluation of the Minimum Unit of a KALA Peptide Required for Gene Delivery and Immune Activation. J Pharm Sci. 2017 Oct;106(10):3113-3119.