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Key Documents

T1567

Sigma-Aldrich

Tertiapin-Q trifluoroacetate salt

≥97% (HPLC)

Synonym(s):

[Gln13]-Tertiapin, Ala-Leu-Cys-Asn-Cys-Asn-Arg-Ile-Ile-Ile-Pro-His-Gln-Cys-Trp-Lys-Lys-Cys-Gly-Lys-Lys-NH2 [Disulfide bridges 3–14, 5–18], TPNQ

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About This Item

Empirical Formula (Hill Notation):
C106H175N35O24S4
CAS Number:
910044-56-3
Molecular Weight:
2452.00
MDL number:
MFCD02684419
UNSPSC Code:
12352200
NACRES:
NA.32

Quality Level

200

Assay

≥97% (HPLC)

form

lyophilized

storage temp.

−20°C

Gene Information

human ... KCNJ1(3758)
mouse ... KCNJ1(56379)
rat ... KCNJ1(24521)

Amino Acid Sequence

Ala-Leu-Cys-Asn-Cys-Asn-Arg-Ile-Ile-Ile-Pro-His-Gln-Cys-Trp-Lys-Lys-Cys-Gly-Lys-Lys-NH2 [Disulfide bridges 3–14, 5–18]

Biochem/physiol Actions

Blocks the GIRK1/4 and ROMK1 members of the inward-rectifier K+ channel family.

Other Notes

Non-air oxidizable tertiapin derivative.
Lyophilized from 0.1% TFA in H2O

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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W Jin et al.
Biochemistry, 38(43), 14286-14293 (1999-11-26)
Tertiapin (TPN), a small protein derived from honey bee venom, inhibits the GIRK1/4 and ROMK1 channels with nanomolar affinities. Methionine residue 13 in TPN interacts with residue F148 in the channel, located just outside of the narrow region of the
W Jin et al.
Biochemistry, 38(43), 14294-14301 (1999-11-26)
Tertiapin-Q (TPN(Q)) is a derivative of honey bee toxin tertiapin (TPN) whose methionine residue is replaced with a glutamine residue. TPN(Q) inhibits the ROMK1 and GIRK1/4 inward-rectifier K(+) channels with affinities very similar to TPN. However, unlike native TPN, TPN(Q)
W Jin et al.
Biochemistry, 37(38), 13291-13299 (1998-09-28)
Inward-rectifier K+ channels are a group of highly specialized K+ channels that accomplish a variety of important biological tasks. Inward-rectifier K+ channels differ from voltage-activated K+ channels not only functionally but also structurally. Each of the four subunits of the

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