Peptide within the protein Cor-a-9:

References reporting this peptide:

• Ansari P., et al. Marker peptide selection for the determination of hazelnut by LC–MS/MS and occurrence in other nuts. Analytical and Bioanalytical Chemistry. 2012
• Costa J., et al. Assessing hazelnut allergens by protein- and DNA-based approaches: LC-MS/MS, ELISA and real-time PCR. Analytical and Bioanalytical Chemistry. 2014
• Gu, et al. A rapid solid-phase extraction combined with liquid chromatography-tandem mass spectrometry for simultaneous screening of multiple allergens in chocolates. Food Control. 2018

Species Uniqueness

Warning: nonspecific peptide

Food	Protein	Taxid
Pecan	Car-i-4.0101	32201
Hazelnut	Cor-a-9.0101	13451
Walnut	Jug-r-4.0101	51240
Pistachio	Pis-v-5.0101	55513

Species containing the peptide WLQLSAER are presented below. Accessions and taxid values link to further information hosted on NCBI.

Species name	Common name	Accession(s)	Tax ID
Nicotiana sylvestris	Wood tobacco	XP_009777915 XP_009777915 XP_009777915 XP_009777915	4096
Capsicum annuum	Capsicum annuum	XP_016565959 XP_016565958 XP_016565959 XP_016565958 XP_016565959 XP_016565958 XP_016565959 XP_016565958	4072
Carya illinoinensis	Carya illinoinensis	ABW86979 ABW86978 ABW86979 ABW86978 ABW86979 ABW86978 ABW86979 ABW86978	32201
Corylus avellana	Corylus avellana	AHA36627 AAL73404 AHA36627 AAL73404 AHA36627 AAL73404 AHA36627 AAL73404	13451
Cucumis melo	Muskmelon	XP_008447426 XP_008447425 XP_008447426 XP_008447425 XP_008447426 XP_008447425 XP_008447426 XP_008447425	3656
Cucumis sativus	Cucumber	XP_004152049 XP_011651441 XP_004152049 XP_011651441 XP_004152049 XP_011651441 XP_004152049 XP_011651441	3659
Ficus pumila var. awkeotsang	Ficus pumila var. awkeotsang	ABK80755 ABK80754 ABK80755 ABK80754 ABK80755 ABK80754 ABK80755 ABK80754	204231
Juglans regia	English walnut	AAW29810 AAW29810 AAW29810 AAW29810	51240
Morus notabilis	Morus notabilis	XP_010111925 XP_010111924 XP_010111925 XP_010111924 XP_010111925 XP_010111924 XP_010111925 XP_010111924	981085
Nicotiana tabacum	Common tobacco	XP_016489177 XP_016439381 XP_016489177 XP_016439381 XP_016489177 XP_016439381 XP_016489177 XP_016439381	4097
Nicotiana tomentosiformis	Nicotiana tomentosiformis	XP_009603583 XP_009603583 XP_009603583 XP_009603583	4098
Pistacia vera	Pistacia vera	ACB55490 ACB55490 ACB55490 ACB55490	55513
Solanum lycopersicum	Tomato	XP_004234041 XP_004234041 XP_004234041 XP_004234041	4081
Solanum pennellii	Solanum pennellii	XP_015067952 XP_015067952 XP_015067952 XP_015067952	28526
Solanum tuberosum	Potato	XP_006356113 XP_006356113 XP_006356113 XP_006356113	4113

BLAST non-redundant protein database version: 4, date: December 9, 2015.

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