Name: Recombinant Human Melanocyte protein PMEL (PMEL), partial
Brand: CUSABIO
SKU: CSB-YP021324HU

Product Details

Purity

Greater than 90% as determined by SDS-PAGE.

Target Names

PMEL

Uniprot No.

P40967

Research Area

Metabolism

Alternative Names

95 kDa melanocyte specific secreted glycoprotein; 95 kDa melanocyte-specific secreted glycoprotein; D12S53E; gp100; M-beta; ME20; ME20 M/ME20 S; ME20-M; ME20-S; ME20M; ME20M/ME20S; ME20S; Melanocyte lineage specific antigen GP100 ; Melanocyte protein mel 17 ; Melanocyte protein Pmel 17; Melanocyte protein Pmel 17 precursor ; Melanocytes lineage-specific antigen GP100; Melanoma associated ME20 antigen; Melanoma gp100; Melanoma-associated ME20 antigen; Melanosomal matrix protein 17; Melanosomal matrix protein17; P1; p100; p26; PMEL 17; PMEL; PMEL_HUMAN; PMEL17; Premelanosome protein; Secreted melanoma-associated ME20 antigen; SI; SIL; SILV; Silver (mouse homolog) like; Silver homolog; Silver locus protein homolog; Silver, mouse, homolog of

Species

Homo sapiens (Human)

Source

Yeast

Expression Region

25-467aa

Target Protein Sequence

KVPRNQDWLGVSRQLRTKAWNRQLYPEWTEAQRLDCWRGGQVSLKVSNDGPTLIGANASFSIALNFPGSQKVLPDGQVIWVNNTIINGSQVWGGQPVYPQETDDACIFPDGGPCPSGSWSQKRSFVYVWKTWGQYWQVLGGPVSGLSIGTGRAMLGTHTMEVTVYHRRGSRSYVPLAHSSSAFTITDQVPFSVSVSQLRALDGGNKHFLRNQPLTFALQLHDPSGYLAEADLSYTWDFGDSSGTLISRALVVTHTYLEPGPVTAQVVLQAAIPLTSCGSSPVPGTTDGHRPTAEAPNTTAGQVPTTEVVGTTPGQAPTAEPSGTTSVQVPTTEVISTAPVQMPTAESTGMTPEKVPVSEVMGTTLAEMSTPEATGMTPAEVSIVVLSGTTAAQVTTTEWVETTARELPIPEPEGPDASSIMSTESITGSLGPLLDGTATLRLV
Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.

Mol. Weight

49.0kDa

Protein Length

Partial

Tag Info

N-terminal 6xHis-tagged

Form

Liquid or 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

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose.

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°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

Troubleshooting and FAQs

Protein 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

3-7 business days

Notes

Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Datasheet & COA

Please contact us to get it.

Description

An ORF cDNA corresponding to the peptide of Human Melanocyte protein PMEL was expressed with an N-terminal 6xHis-tag in the yeast cells. PMEL CSB-YP021324HU is a truncated molecule with amino acids of Lys25-Val467. Its purity is greater than 90% assessed by SDS-PAGE. A molecular mass band of about 52 kDa was presented on the gel under reducing conditions. It was also validated by the LC-MS/MS analysis. This recombinant PMEL protein may be used to produce specific anti-PMEL antibodies or in the studies of PMEL-associated metabolism.

Premelanosome Protein (PMEL) is an amyloid protein that participates in the melanosome matrix formation through the interaction with melanin. Eumelanin deposition requires the expression of PMEL and proper formation of the melanosome matrix, both of which are not crucial for the development of pheomelanic melanosomes. As a consequence, PMEL mutations lead to eumelanin defects in cattle, chicken, and mouse. PMEL mutations are also associated with pigmentary glaucoma in humans.

Target Background

Function

Plays a central role in the biogenesis of melanosomes. Involved in the maturation of melanosomes from stage I to II. The transition from stage I melanosomes to stage II melanosomes involves an elongation of the vesicle, and the appearance within of distinct fibrillar structures. Release of the soluble form, ME20-S, could protect tumor cells from antibody mediated immunity.

Gene References into Functions

To provide a source of dual-specific T cells for ACT, we generated a transgenic mouse strain expressing a CAR specific for Her2 in leukocytes under the control of the vav promoter .This CAR mouse strain was bred onto the pMEL transgenic mouse strain, expressing a TCR specific for the premelanosome protein, gp100 PMID: 27965307
IMCgp100 (ImmTAC recognizing a peptide derived from the melanoma-specific protein, gp100, presented by HLA-A*0201) efficiently redirects and activates effector and memory cells from both CD8(+) and CD4(+) repertoires to kill melanoma cells. PMID: 28640942
our work attempts to provide structural insights into the RPT domain structure and to elucidate its contribution to Pmel17 amyloid fibril formation. PMID: 26754844
These findings help to clarify the mechanism of T-cell recognition of gp100 during melanoma responses and could direct the development of altered peptides for vaccination. PMID: 26917722
Data suggest that the Kringle-like domain of PMEL facilitates post-endoplasmic reticulum processing of disulfide-bonded PMEL dimers and promotes formation of PMEL functional amyloid fibrillar structures within multivesicular endosomes. PMID: 26694611
mutant N-terminally extended peptides exhibited significantly increased HLA-A*02:01 binding affinity and elicited CD8(+) T cell stimulation in vitro similar to the wtgp100209-217 epitope. PMID: 26507656
Data indicate that repeat domain (RPT) derived from Pmel17 aggregation kinetics were influenced only by lysolipid-containing phospholipid vesicles. PMID: 25451784
Melanosome-autonomous regulation of size and number: the OA1 receptor sustains PMEL expression. PMID: 24650003
SIL-TAL1 rearrangement identifies a distinct subtype with inferior outcome which could allow for individual therapeutic stratification for T-ALL patients. PMID: 24040098
the molecular basis for the distinct trafficking and morphogenetic properties of PMEL and GPNMB is the PKD domain PMID: 23452376
Data indicat that the N-terminal region of PMEL/Pmel17 is essential for the formation of melanosomal fibrils. PMID: 23389629
BACE2 cleaves the integral membrane form of PMEL within the juxtamembrane domain, releasing the PMEL luminal domain into endosomal precursors for the formation of amyloid fibrils and downstream melanosome morphogenesis. PMID: 23754390
The recombinant Pmel 17 plasmids were right as we expected by DNA sequencing PMID: 23643172
The most significant single-nucleotide polymorphism in the 12q13.2 locus is located immediately upstream of the promoter region of PMEL for vitiligo in Han Chinese. PMID: 22951725
An antibody drug conjugate reactive with PMEL17 exhibits target-dependent tumor cell killing in vitro and in vivo. PMID: 22613716
This is a review on two human amyloidogenic polypeptides, one associated with Parkinson's disease, alpha-synuclein (alpha-syn), and the other important for melanin synthesis, the repeat domain (RPT) from Pmel17.[Review] PMID: 21993592
MART-1- and gp100-expressing and -non-expressing melanoma cells are equally proliferative in tumors and clonogenic in vitro. PMID: 21993558
Pmel17 repeat domain fibril dissolution is pH dependent PMID: 22092386
the DW and HoSi mutations alter PMEL TMD oligomerization and/or association with membranes, with consequent formation of aberrantly packed fibrils. PMEL mutations can model the conversion between physiological and pathological amyloid PMID: 21949659
the multistep processing of Pmel17 begins with an early cleavage during secretion that primes the protein for later functional processing. PMID: 21247888
Repeat domains of melanosome matrix protein Pmel17 orthologs form amyloid fibrils at the acidic melanosomal pH. PMID: 21148556
Data suggest that intramelanosomal pH regulates Pmel17 amyloid formation and its subsequent dissolution in vivo. PMID: 21106765
N-terminal region and the polycystic kidney disease-like domain is highly crucial for endoplasmic reticulum export, subcellular targeting, and fibril formation by Pmel17 and thus for establishing functional melanosomes. PMID: 20231267
Data conclude that sPmel17 is released by regulated proteolytic ectodomain shedding. PMID: 19884326
we identified the gp100/pMel17 melanosomal protein as the shared antigen recognized by three independent CD8+ CTL clones in HLA-A*6801-restricted fashion. PMID: 12135425
Data show that MITF appears to regulate the expression of the SILV and MLANA genes. PMID: 12819038
Antigen-specific T lymphocyte reactivity to gp100 peptides was seen in 15 of 17 (88%) vitiligo patients, with many demonstrating very high reactivity at levels comparable with those observed with common recall antigens PMID: 12925214
truncation of the repeat region within Pmel17 alters either fibrillogenic activity or the interaction of Pmel17 with melanin intermediates PMID: 14632201
CD8 T lymphocytes recognized a nonameric peptide on melanoma cells that comprises two noncontiguous segments of melanocytic glycoprotein gp100(PMEL17); the production of this peptide involves the excision of four amino acids and splicing of the fragments PMID: 15001714
PMEL17 is rapidly processed in the endoplasmic reticulum and glycosylated in the early Golgi PMID: 15096515
Data suggest that MART-1 is indispensable for Pmel17 function and thus plays an important role in regulating mammalian pigmentation. PMID: 15695812
Data show that the melanosomal protein Pmel17 is sorted into intralumenal vesicles by a mechanism that is dependent upon lumenal determinants and conserved in non-pigment cells. PMID: 16516837
the RPT domain of PMEL17/GP100 is essential for its function in generating the fibrillar matrix of melanosomes and that the luminal domain is necessary for its correct processing and trafficking to those organelles PMID: 16682408
Pmel17 is a critical component of melanogenesis. PMID: 16704461
These data reveal a dual sorting defect in a natural mutant of Pmel17 and support a requirement of endocytic trafficking in Pmel17 fibril formation. PMID: 16760433
addition of sialic acid affects the stability and sorting of Pmel17 and reduces pigmentation PMID: 17303571
GTP-bound form of Rab7 promotes melanogenesis through the regulation of gp100 maturation in melanoma cells. PMID: 17625594
Premelanosome amyloid-like fibrils are composed of only golgi-processed forms of Pmel17 that have been proteolytically processed in endosomes PMID: 17991747
Measurement of Melan-A, gp100, MAGE-3, MIA and tyrosinase represents a prognostic factor and a method for early detection of metastasis and treatment response of melanoma patients. PMID: 18181974
Tyrosinase-, gp100-, or TRP-2-specific CD8(+) T cells could not be identified in the peripheral blood of individuals with vitiligo. PMID: 18337837
Nuclear to non-nuclear Pmel17/gp100 expression (HMB45 staining) is a discriminator between benign and malignant melanocytic lesions. PMID: 18552823
MHC class II presentation of gp100 epitopes in melanoma cells requires the function of conventional endosomes and is influenced by melanosomes. PMID: 19017974
release of the Pmel17 ectodomain, which is critical for melanin amyloidogenesis, is initiated by S2 cleavage at a juxtamembrane position PMID: 19047044
the repeat domain of the melanosome fibril protein Pmel17 forms the amyloid core promoting melanin synthesis PMID: 19666488
N-terminal domains elicit formation of functional Pmel17 amyloid fibrils. PMID: 19840945
Details and validates the multiple sorting pathways used by the silver protein to reach melanosomes. It identifies the specific adaptor proteins involved and sheds light on the polarization of the melanocyte. PMID: 16492709
Detailed analysis of the post-translational modifications and their effect over the processing and trafficking of the silv gene. PMID: 17303571
The PMEL17 (SILV) protein catalyzes the polymerization of 5,6-dihydroxyindole-2-carboxylic acid to melanin. PMID: 8617263
Pmel17 is proteolytically processed in a post-Golgi compartment and is enriched in multivesicular endosomes prior to incorporation in stage II melanosomes. PMID: 11694580
A proteolytic fragment of Pmel17, generated by proprotein convertase cleavage, is the major biogenetic component of the underlying fibrillar matrix of melanosome precursors. PMID: 12732614

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Subcellular Location

Endoplasmic reticulum membrane; Single-pass type I membrane protein. Golgi apparatus. Melanosome. Endosome, multivesicular body. Note=Identified by mass spectrometry in melanosome fractions from stage I to stage IV. Localizes predominantly to intralumenal vesicles (ILVs) within multivesicular bodies. Associates with ILVs found within the lumen of premelanosomes and melanosomes and particularly in compartments that serve as precursors to the striated stage II premelanosomes.; [M-alpha]: Secreted.

Protein Families

PMEL/NMB family

Tissue Specificity

Preferentially expressed in melanomas. Some expression was found in dysplastic nevi. Not found in normal tissues nor in carcinomas. Normally expressed at low levels in quiescent adult melanocytes but overexpressed by proliferating neonatal melanocytes and

Database Links

HGNC: 10880

OMIM: 155550

KEGG: hsa:6490

STRING: 9606.ENSP00000402758

UniGene: Hs.95972

Code	CSB-YP021324HU
Abbreviation	Recombinant Human PMEL protein, partial
MSDS	MSDS Datasheet
Size	$250
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Image	(Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel. Based on the SEQUEST from database of Yeast host and target protein, the LC-MS/MS Analysis result of CSB-YP021324HU could indicate that this peptide derived from Yeast-expressed Homo sapiens (Human) PMEL. Based on the SEQUEST from database of Yeast host and target protein, the LC-MS/MS Analysis result of CSB-YP021324HU could indicate that this peptide derived from Yeast-expressed Homo sapiens (Human) PMEL.
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Recombinant Human Melanocyte protein PMEL (PMEL), partial

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