# -*- coding: utf-8 -*-
"""
Created on Sun Jun 08 21:36:24 2014

@author: cpycpp
"""

"""
BioPython（www.bipython.org）开始于1999年8月，发起者为Jeff Chang和Andrew Dalke。

同类模块BioPerl，是Bio*项目组之一(www.open-bio.org)。

错误追踪系统：bugzilla.open-bio.org

遵循的协议：BioPython License

BioPython组件
"""

import Bio.Alphabet

print Bio.Alphabet.ThreeLetterProtein.letters


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Output:
[‘Ala‘, ‘Asx‘, ‘Cys‘, ‘Asp‘, ‘Glu‘, ‘Phe‘, ‘Gly‘, ‘His‘, ‘Ile‘, ‘Lys‘, ‘Leu‘, ‘Met‘, ‘Asn‘, ‘Pro‘, ‘Gln‘, ‘Arg‘, ‘Ser‘, ‘Thr‘, ‘Sec‘, ‘Val‘, ‘Trp‘, ‘Xaa‘, ‘Tyr‘, ‘Glx‘]
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from Bio.Alphabet import IUPAC

print IUPAC.IUPACProtein.letters
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Output:
ACDEFGHIKLMNPQRSTVWY
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print IUPAC.unambiguous_dna.letters
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Output:
GATC
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在BioPython中ambiguous_dna定义为有歧义的字母表，如S可能代表核算C或G，H可能代表A、C、T
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print IUPAC.ambiguous_dna.letters
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Output:
GATCRYWSMKHBVDN
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在BioPython中ExtendedIUPACProtein定义为表示常见蛋白质中不常见的氨基酸的字典
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print IUPAC.ExtendedIUPACProtein.letters
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Output:
ACDEFGHIKLMNPQRSTVWYBXZJUO
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在BioPython中ExtendedIUPACDNA定义为表示核苷酸的扩展库，允许字母带有修饰的碱基
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print IUPAC.ExtendedIUPACDNA.letters
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Output:
GATCBDSW
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