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Merck
모든 사진(1)

문서

SRP3012

Sigma-Aldrich

Beta D-1 (47 aa) human

recombinant, expressed in E. coli, ≥98% (SDS-PAGE), ≥98% (HPLC), suitable for cell culture

동의어(들):

DEFB1, beta-Defensin-1

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About This Item

UNSPSC 코드:
12352202
NACRES:
NA.32

생물학적 소스

human

재조합

expressed in E. coli

분석

≥98% (HPLC)
≥98% (SDS-PAGE)

형태

lyophilized

분자량

5.0 kDa

포장

pkg of 20 μg

기술

cell culture | mammalian: suitable

불순물

<0.1 EU/μg endotoxin, tested

색상

white to off-white

UniProt 수납 번호

항생제 활성 스펙트럼

fungi
mycobacteria
viruses

동작 모드

cell membrane | interferes

배송 상태

wet ice

저장 온도

−20°C

유전자 정보

human ... DEFB1(1672)

일반 설명

Chemical structure: peptide
Defensins (alpha and beta) are cationic peptides with a broad spectrum of antimicrobial activity that comprise an important arm of the innate immune system. The α-defensins are distinguished from the β-defensins by the pairing of their three disulfide bonds. To date, four human β-defensins have been identified; BD-1, BD-2, BD-3 and BD-4. β-defensins are expressed on some leukocytes and at epithelial surfaces. In addition to their direct antimicrobial activities, they are chemoattractant towards immature dendritic cells and memory T cells. The β-defensin proteins are expressed as the C-terminal portion of precursors and are released by proteolytic cleavage of a signal sequence and, in the case of BD-1 (36a.a.), a propeptide region. b-defensins contain a six-cysteine motif that forms three intra-molecular disulfide bonds. β-defensins are 3-5 kDa peptides ranging in size from 33-47 amino acid residues. Recombinant human BD-1 is a 5.0 kDa protein containing 47 amino acid residues.

생화학적/생리학적 작용

Defensins (alpha and beta) are cationic peptides with a broad spectrum of antimicrobial activity that comprise an important arm of the innate immune system. Recombinant human BD-1 is a 5.0 kDa protein containing 47 amino acid residues.

서열

GNFLTGLGHR SDHYNCVSSG GQCLYSACPI FTKIQGTCYR GKAKCCK

물리적 형태

Lyophilized from 10 mM Sodium Citrate, pH 4.0.

재구성

Centrifuge the vial prior to opening. Reconstitute in 10 mM Acetic Acid to a concentration of 0.1-1.0 mg/ml. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable


시험 성적서(COA)

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문서 라이브러리 방문

Y Q Tang et al.
Science (New York, N.Y.), 286(5439), 498-502 (1999-10-16)
Analysis of rhesus macaque leukocytes disclosed the presence of an 18-residue macrocyclic, tridisulfide antibiotic peptide in granules of neutrophils and monocytes. The peptide, termed rhesus theta defensin-1 (RTD-1), is microbicidal for bacteria and fungi at low micromolar concentrations. Antibacterial activity
Robert I Lehrer et al.
Current opinion in immunology, 14(1), 96-102 (2002-01-16)
During the past year, novel beta-defensins of mice and men have been identified, together with a novel defensin subfamily (the circular or 'theta' minidefensins) in primates. Insight into the evolution of defensins has been obtained from structural studies, and several

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