Recombinant Human Protein fem-1 homolog B (FEM1B)

Code CSB-YP891718HU
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Source Yeast
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Code CSB-EP891718HU
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Source E.coli
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Code CSB-EP891718HU-B
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Source E.coli
Conjugate Avi-tag Biotinylated
E. coli biotin ligase (BirA) is highly specific in covalently attaching biotin to the 15 amino acid AviTag peptide. This recombinant protein was biotinylated in vivo by AviTag-BirA technology, which method is BriA catalyzes amide linkage between the biotin and the specific lysine of the AviTag.
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Code CSB-BP891718HU
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Source Baculovirus
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Code CSB-MP891718HU
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Source Mammalian cell
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Product Details

Purity
>85% (SDS-PAGE)
Target Names
FEM1B
Uniprot No.
Alternative Names
F1A alpha; F1A-alpha; F1AA; Fem-1-like death receptor-binding protein alpha; Fem-1-like in apoptotic pathway protein alpha; Fem1 homolog b; FEM1 like death receptor binding protein; FEM1-beta; FEM1b; FEM1B_HUMAN; Protein fem-1 homolog B
Species
Homo sapiens (Human)
Expression Region
1-627
Target Protein Sequence
MEGLAGYVYK AASEGKVLTL AALLLNRSES DIRYLLGYVS QQGGQRSTPL IIAARNGHAK VVRLLLEHYR VQTQQTGTVR FDGYVIDGAT ALWCAAGAGH FEVVKLLVSH GANVNHTTVT NSTPLRAACF DGRLDIVKYL VENNANISIA NKYDNTCLMI AAYKGHTDVV RYLLEQRADP NAKAHCGATA LHFAAEAGHI DIVKELIKWR AAIVVNGHGM TPLKVAAESC KADVVELLLS HADCDRRSRI EALELLGASF ANDRENYDII KTYHYLYLAM LERFQDGDNI LEKEVLPPIH AYGNRTECRN PQELESIRQD RDALHMEGLI VRERILGADN IDVSHPIIYR GAVYADNMEF EQCIKLWLHA LHLRQKGNRN THKDLLRFAQ VFSQMIHLNE TVKAPDIECV LRCSVLEIEQ SMNRVKNISD ADVHNAMDNY ECNLYTFLYL VCISTKTQCS EEDQCKINKQ IYNLIHLDPR TREGFTLLHL AVNSNTPVDD FHTNDVCSFP NALVTKLLLD CGAEVNAVDN EGNSALHIIV QYNRPISDFL TLHSIIISLV EAGAHTDMTN KQNKTPLDKS TTGVSEILLK TQMKMSLKCL AARAVRANDI NYQDQIPRTL EEFVGFH
Protein Length
full length protein
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer before Lyophilization
Tris/PBS-based buffer, 6% Trehalose, pH 8.0
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life
The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.
Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Lead Time
Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet
Please contact us to get it.

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Target Background

Function
Substrate-recognition component of a Cul2-RING (CRL2) E3 ubiquitin-protein ligase complex of the DesCEND (destruction via C-end degrons) pathway, which recognizes a C-degron located at the extreme C terminus of target proteins, leading to their ubiquitination and degradation. The C-degron recognized by the DesCEND pathway is usually a motif of less than ten residues and can be present in full-length proteins, truncated proteins or proteolytically cleaved forms. The CRL2(FEM1B) complex specifically recognizes proteins ending with -Gly-Leu-Asp-Arg, such as CDK5R1, leading to their ubiquitination and degradation. Also acts as a regulator of the reductive stress response by mediating ubiquitination of reduced FNIP1: in response to reductive stress, the CRL2(FEM1B) complex specifically recognizes a conserved Cys degron in FNIP1 when this degron is reduced, leading to FNIP1 degradation and subsequent activation of mitochondria to recalibrate reactive oxygen species (ROS). Promotes ubiquitination of GLI1, suppressing GLI1 transcriptional activator activity. Promotes ubiquitination and degradation of ANKRD37. Promotes ubiquitination and degradation of SLBP. Involved in apoptosis by acting as a death receptor-associated protein that mediates apoptosis. Also involved in glucose homeostasis in pancreatic islet. May also act as an adapter/mediator in replication stress-induced signaling that leads to the activation of CHEK1.
Gene References into Functions
  1. FEM1 proteins are ancient regulators of Stem-Loop Binding Protein. PMID: 28118078
  2. These findings have implications for understanding the cellular functions of Fem1b, and the regulation of Gli1 oncoprotein activity. PMID: 24076122
  3. the proapoptotic protein Fem1b is downregulated by the proteasome in malignant colon cancer cells and mediates proteasome inhibitor-induced apoptosis of these cells PMID: 19908242
  4. This study presents evidence suggesting a role for FEM1A and FEM1B in the pathogenesis of polycystic ovary syndrome. Only FEM1B variants were associated with insulin-related traits in PCOS women. PMID: 18757445
  5. FEM1B is required for Rad9 recruitment and CHK1 activation in response to replication stress. PMID: 19330022

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Subcellular Location
Cytoplasm. Nucleus.
Protein Families
Fem-1 family
Tissue Specificity
Widely expressed. Highly expressed in testis. Weakly expressed in other tissues.
Database Links

HGNC: 3649

OMIM: 613539

KEGG: hsa:10116

STRING: 9606.ENSP00000307298

UniGene: Hs.362733

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