1.根据Uniprot ID批处理获取蛋白质.pdb文件

由于Uniprot的ID号可能对应多个NCBI的ID，但是根据Alphafold可以获取其唯一的PDB文件，所以用代码批处理获得.pdb文件如下：

import pandas as pd
import numpy as np
from Bio import SeqIO
from Bio import PDB
import requests
 
# 但是可能会出现 InsecureRequestWarning 警告，
# 虽然不影响代码采集但是看着不舒服，可以加上下面两行：
import urllib3
urllib3.disable_warnings()
 
headers = {'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0'}
 
def read_file(file_name):
    pro_swissProt = []
    with open(file_name, 'r') as fp:
 
        for line in fp:
            if line.startswith('>'):#作用：判断字符串是否以指定字符或子字符串开头
                pro_swissProt.append(line[1:-1])
    return pro_swissProt
 
file1 = '/AD/all1.csv'
 
ID=read_file(file1)
 
j = 0
not_exist_list = []
 
for i in ID:
    j = j + 1
    print(j)
    print(i)
    url = 'https://alphafold.ebi.ac.uk/files/AF-'+i+'-F1-model_v1'+'.pdb'
    print(url)
 
    r = requests.get(url, headers=headers, verify=False)
    with open('/AD/Information/PDB/'+i+'.pdb','w') as files:
 
        r = r.text.splitlines()  #np.array(pssm).tolist()
        for lines in r:
            files.write(lines)
            files.write('\n')
 
    if r[0][1]=='?':
        print(i + '没有pdb文件。')
        not_exist_list.append(i)
 
#输出了未找到的蛋白质的.pdb文件，这些可以在网址里再手动查一下，有遗漏的
print(not_exist_list)
print(len(not_exist_list))

其中，file1格式如下：

>Q8BH75
MGYDVTRFQGDVDEDLICPICSGVLEEPVQAPHCEHAFCNACITQWFSQQQTCPVDRSVVTVAHLRPVPRIMRNMLSKLQIACDNAVFGCSAVVRLDNLMSHLSDCEHNPKRPVTCEQGCGLEMPKDELPNHNCIKHLRSVVQQQQSRIAELEKTSAEHKHQLAEQKRDIQLLKAYMRAIRSVNPNLQNLEETIEYNEILEWVNSLQPARVTRWGGMISTPDAVLQAVIKRSLVESGCPASIVNELIENAHERSWPQGLATLETRQMNRRYYENYVAKRIPGKQAVVVMACENQHMGDDMVQEPGLVMIFAHGVEEI
>P06727
MFLKAVVLTLALVAVAGARAEVSADQVATVMWDYFSQLSNNAKEAVEHLQKSELTQQLNALFQDKLGEVNTYAGDLQKKLVPFATELHERLAKDSEKLKEEIGKELEELRARLLPHANEVSQKIGDNLRELQQRLEPYADQLRTQVSTQAEQLRRQLTPYAQRMERVLRENADSLQASLRPHADELKAKIDQNVEELKGRLTPYADEFKVKIDQTVEELRRSLAPYAQDTQEKLNHQLEGLTFQMKKNAEELKARISASAEELRQRLAPLAEDVRGNLRGNTEGLQKSLAELGGHLDQQVEEFRRRVEPYGENFNKALVQQMEQLRQKLGPHAGDVEGHLSFLEKDLRDKVNSFFSTFKEKESQDKTLSLPELEQQQEQQQEQQQEQVQMLAPLES
>Q60770
MAPPVSERGLKSVVWRKIKTAVFDDCRKEGEWKIMLLDEFTTKLLSSCCKMTDLLEEGITVIENIYKNREPVRQMKALYFISPTPKSVDCFLRDFGSKSEKKYKAAYIYFTDFCPDSLFNKIKASCSKSIRRCKEINISFIPQESQVYTLDVPDAFYYCYSPDPSNASRKEVVMEAMAEQIVTVCATLDENPGVRYKSKPLDNASKLAQLVEKKLEDYYKIDEKGLIKGKTQSQLLIIDRGFDPVSTVLHELTFQAMAYDLLPIENDTYKYKTDGKEKEAVLEEDDDLWVRVRHRHIAVVLEEIPKLMKEISSTKKATEGKTSLSALTQLMKKMPHFRKQISKQVVHLNLAEDCMNKFKLNIEKLCKTEQDLALGTDAEGQRVKDSMLVLLPVLLNKNHDNCDKIRAVLLYIFGINGTTEENLDRLIHNVKIEDDSDMIRNWSHLGVPIVPPSQQAKPLRKDRSAEETFQLSRWTPFIKDIMEDAIDNRLDSKEWPYCSRCPAVWNGSGAVSARQKPRTNYLELDRKNGSRLIIFVIGGITYSEMRCAYEVSQAHKSCEVIIGSTHILTPRKLLDDIKMLNKSKDKVSFKDE
>P70452
MRDRTHELRQGDNISDDEDEVRVALVVHSGAARLGSPDDEFFQKVQTIRQTMAKLESKVRELEKQQVTILATPLPEESMKQGLQNLREEIKQLGREVRAQLKAIEPQKEEADENYNSVNTRMKKTQHGVLSQQFVELINKCNSMQSEYREKNVERIRRQLKITNAGMVSDEELEQMLDSGQSEVFVSNILKDTQVTRQALNEISARHSEIQQLERSIRELHEIFTFLATEVEMQGEMINRIEKNILSSADYVERGQEHVKIALENQKKARKKKVMIAICVSVTVLILAVIIGITITVG
>P63044
MSATAATVPPAAPAGEGGPPAPPPNLTSNRRLQQTQAQVDEVVDIMRVNVDKVLERDQKLSELDDRADALQAGASQFETSAAKLKRKYWWKNLKMMIILGVICAIILIIIIVYFST

2.根据PDB ID在RCSB中获取pdb文件

将第一段代码的网址换成：

url = 'http://www.rcsb.org/pdb/files/'+i+'.pdb'

PS：最近在学习dssp的处理，但是一直没有进展，又没有小伙伴有Linux的安装包和教程

***********************

满满的干货说我文章质量太低了………………，让我提交下，看看字数够了没