<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31304511</termId><termName>peptide mass fingerprinting</termName><termType>PT</termType><termNote><![CDATA[ Peptide mass fingerprinting (PMF) is an analytic technique for protein identification. Proteins extracted from the proteome of a sample are individually digested using a protease into a series of smaller peptides. The set of masses of these peptide fragments is then measured with a mass spectrometer, forming a peptide mass fingerprint of the protein which can then be compared with known protein sequences for this organism in a protein sequence database. ]]></termNote><termCreatedDate>2026-03-30 20:21:54</termCreatedDate><relation><relationType>UF</relationType><termId>31304512</termId><termName>PMF</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31304513</termId><termName>fingerprinting, peptide mass</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31298665</termId><termName>analysis and testing techniques</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31428100</termId><termName>mass spectrometers</termName><termType>PT</termType></relation></term>  </Zthes>