Cystatin 1 (CST1) Recombinant Protein | CST1 recombinant protein

Recombinant Cystatin 1 (CST1)

Cat. Num. AAA2011485

• Applications: SDS-Page, Western Blot, ELISA, Immunoprecipitation
• Purity: > 95%
• Synonyms: Cystatin 1 (CST1); Recombinant Cystatin 1 (CST1); CST1 recombinant protein

• Host: E Coli
• Purity/Purification: > 95%
• Form/Format: Supplied as lyophilized form in PBS,pH7.4, containing 5% sucrose, 0.01% sarcosyl.
• Sequence: The target protein is fused with two N-terminal Tags, His-tag and S-tag, its sequence is listed below.; MHHHHHHSSGLVPRGSGMKETAAAKFERQHMDSPDLGTDDDDKAMADIGSEF-WSPKEEDRII PGGIYNADLN DEWVQRALHF AISEYNKATK DDYYRRPLRV LRARQQTVGG VNYFFDVEVG RTICTKSQPN LDTCAFHEQP ELQKKQLCSF EIYEVPWENR RSLVKSRCQE S
• Sequence Length: 141

• Applicable Applications for CST1 recombinant protein: SDS-PAGE, Western Blot (WB), ELISA (EIA), Immunoprecipitation (IP)
• Organism: Homo sapiens (Human)
• Expression System: Prokaryotic expression
• Residues: Trp21~Ser141 (Accession # P01037) with two N-terminal Tags, His-tag and S-tag
• Endotoxin Level: <1.0EU per 1ug (determined by the LAL method)
• Reconstitution: Reconstitute in sterile PBS, pH7.2-pH7.4.
• Preparation and Storage: Avoid repeated freeze/thaw cycles. Store at 2-8 degree C for one month. Aliquot and store at -80 degree C for 12 months.; Stability Test: The thermal stability is described by the loss rate of the targetprotein. The loss rate was determined by accelerated thermal degradation test,that is, incubate the protein at 37 degree C for 48h, and no obvious degradation andprecipitation were observed. (Referring from China Biological Products Standard,which was calculated by the Arrhenius equation.) The loss of this protein is lessthan 5% within the expiration date under appropriate storage condition.

Sequence Information

SDS-Page

NCBI and Uniprot Product Information

• NCBI GI #: 19882251
• NCBI GeneID: 1469
• NCBI Accession #: NP_001889.2
• NCBI GenBank Nucleotide #: NM_001898.2
• UniProt Accession #: P01037; Q96LE6; Q9UCQ6
• Molecular Weight: 20.0kDa
• NCBI Official Full Name: cystatin-SN
• NCBI Official Synonym Full Names: cystatin SN
• NCBI Official Symbol: CST1
• NCBI Protein Information: cystatin-SN; cystatin 1; cystatin-1; cystain-SA-I; cystatin SA-I; salivary cystatin-SA-1; cysteine proteinase inhibitor, type 2 family
• UniProt Protein Name: Cystatin-SN
• Protein Family: Cystatin
• UniProt Gene Name: CST1
• UniProt Entry Name: CYTN_HUMAN

NCBI Description

The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins and the kininogens. The type 2 cystatin proteins are a class of cysteine proteinase inhibitors found in a variety of human fluids and secretions, where they appear to provide protective functions. The cystatin locus on chromosome 20 contains the majority of the type 2 cystatin genes and pseudogenes. This gene is located in the cystatin locus and encodes a cysteine proteinase inhibitor found in saliva, tears, urine, and seminal fluid. [provided by RefSeq, Jul 2008]

Uniprot Description

CST1: Human saliva appears to contain several cysteine proteinase inhibitors that are immunologically related to cystatin S but that differ in their specificity due to amino acid sequence differences. Cystatin SN, with a pI of 7.5, is a much better inhibitor of papain and dipeptidyl peptidase I than is cystatin S, although both inhibit ficin equally well. Belongs to the cystatin family.

Protein type: Secreted, signal peptide; Secreted

Chromosomal Location of Human Ortholog: 20p11.21

Cellular Component: extracellular space

Molecular Function: cysteine protease inhibitor activity

Biological Process: detection of chemical stimulus involved in sensory perception of bitter taste