各位大神,帮忙解决一下下面的生物信息学题目吧,我实在看不懂啊,急急急,回复相关主题即给分,采纳追分
1Howmanyentriesfrommaize(Zeamays)areinthepublicDNAdatabase(suchasGenBank)?HowmanyWaxy...
1How many entries from maize (Zea mays) are in the public DNA database (such as GenBank)? How many Waxy (granule-bound starch synthase) gene sequences from maize in the database?
#2 A sequence was generated by a suppression subtractive hybridization (SSH) experiment. Please find the best hit(s) of the unknown sequence in the public database and predict its potential function.
>an unknown sequence
CCTCGGAGATCTTCATGGGGGGCAAGAGCACCATCGTGCTgCACAACACCTGCGAGGACTCGCTCCTCGCTGCACCCATCATTCTTGATCTGGTGCTCCT
GGCGGAGCTCAGCACCAGGATTCAGCTGAAGGCCGAGGGAGAGGTAAGAGTCTGACGAGATATGTTGCTAGTCTACTCTGTAGTCGAGATATACTTTGGG
AGCCAAACTGAAGATTTCGCTGCTCCACTTGCATTTGTGCAGGACAAGTTCCATTCCTTCCATCCGGTTGCCACCATCCTGAGCTACCTCACCAAGGCAC
CCCTGGTAAGAAACAATTCTCGACTGTTTGCTCTAAATAACCTATAGATAAATAAAGACGATTAACTGACGTGCCACTGAATTCCTCTGTTAACAGGTTC
CTCCTGGCACGCCGGTGGTGAACGCCCTGGCGAAGCAAAGGGCGATGCTGGAGAACATCATGAGGGCGTGTGTCGGCCTGGCGCCCGAAAACAACATGAT
CCTGGAGTACAAGTGAGGAGCGTGGCCCAAGCTCGCGGAGCCGAGAGCGACCGTACGTACGTAGCAAGTGGCGAGGGGCGACGGGAGGGCAGGACGAAGA
AGAAGGCGAGATCGGCTGTGGAATTATTTGGCGGCTTGTCTTTAGTTTCCTTTGCGAATCTTTCCCTGGTTAAGTTTACCCCAGTGAGTGTGTGTCCTTG
CGAGAAAAG
#3 Use dynamic programming method, the Needleman-Wunsch algorithm, to perform global alignment of the sequences:
P1: HEAGAWGHEEA
P2: PAWHEAEA
Scoring system: BLOSUM50 scoring matrix with gap penalty 8.
BLOSUM50 (partial)
A
E
G
H
P
W
A
5
-1
0
-2
-1
-3
E
6
-3
0
-1
-3
G
8
-2
-2
-3
H
10
-2
-3
P
10
-4
W
15
#4 Please find genes in a genomic segment of bamboo (ownload).
#5 Please find consensus sequences (domains/motifs) in plant disease resistance genes(Download).
#6 Construction of phylogenetic tree of the plant disease resistance genes
#7A review about cereal genomes or human genomes in recent two years (2011-2012) 展开
#2 A sequence was generated by a suppression subtractive hybridization (SSH) experiment. Please find the best hit(s) of the unknown sequence in the public database and predict its potential function.
>an unknown sequence
CCTCGGAGATCTTCATGGGGGGCAAGAGCACCATCGTGCTgCACAACACCTGCGAGGACTCGCTCCTCGCTGCACCCATCATTCTTGATCTGGTGCTCCT
GGCGGAGCTCAGCACCAGGATTCAGCTGAAGGCCGAGGGAGAGGTAAGAGTCTGACGAGATATGTTGCTAGTCTACTCTGTAGTCGAGATATACTTTGGG
AGCCAAACTGAAGATTTCGCTGCTCCACTTGCATTTGTGCAGGACAAGTTCCATTCCTTCCATCCGGTTGCCACCATCCTGAGCTACCTCACCAAGGCAC
CCCTGGTAAGAAACAATTCTCGACTGTTTGCTCTAAATAACCTATAGATAAATAAAGACGATTAACTGACGTGCCACTGAATTCCTCTGTTAACAGGTTC
CTCCTGGCACGCCGGTGGTGAACGCCCTGGCGAAGCAAAGGGCGATGCTGGAGAACATCATGAGGGCGTGTGTCGGCCTGGCGCCCGAAAACAACATGAT
CCTGGAGTACAAGTGAGGAGCGTGGCCCAAGCTCGCGGAGCCGAGAGCGACCGTACGTACGTAGCAAGTGGCGAGGGGCGACGGGAGGGCAGGACGAAGA
AGAAGGCGAGATCGGCTGTGGAATTATTTGGCGGCTTGTCTTTAGTTTCCTTTGCGAATCTTTCCCTGGTTAAGTTTACCCCAGTGAGTGTGTGTCCTTG
CGAGAAAAG
#3 Use dynamic programming method, the Needleman-Wunsch algorithm, to perform global alignment of the sequences:
P1: HEAGAWGHEEA
P2: PAWHEAEA
Scoring system: BLOSUM50 scoring matrix with gap penalty 8.
BLOSUM50 (partial)
A
E
G
H
P
W
A
5
-1
0
-2
-1
-3
E
6
-3
0
-1
-3
G
8
-2
-2
-3
H
10
-2
-3
P
10
-4
W
15
#4 Please find genes in a genomic segment of bamboo (ownload).
#5 Please find consensus sequences (domains/motifs) in plant disease resistance genes(Download).
#6 Construction of phylogenetic tree of the plant disease resistance genes
#7A review about cereal genomes or human genomes in recent two years (2011-2012) 展开
展开全部
(1)在公共DNA数据库(比如GenBank)中有多少玉米相关的条目(entries)?在数据库中与玉米相关数据中有多少Waxy (granule-bound starch synthase)基因序列?
(2)SSH实验得到了一个未知序列,请在公共数据库中找到最佳匹配(hit)(其实就是做比对,blast),然后预测潜在的功能。(结构相似性与功能相似性)
(3)用动态算法(指定了这个算法:Needleman-Wunsch algorithm)对以下序列进行全局比对,打分系统用BLOSUM50空位罚分8。(需要你去了解这个算法,然后用程序实现应用到比对中,最后得出最佳的匹配方案得到结果)
(4) 在竹子的基因组片段中找基因
(5) 在植物抗病基因中找一致性序列(domains/motifs)(这个你可以用寻找motif的软件工具,如MEME)
(6) 构建植物抗病基因的系统发生树
(7) 写一篇近两年关于谷物类基因或者人类基因组相关的综述。
P.S. LZ你这个是课程结束作业么,工作量不小啊
(2)SSH实验得到了一个未知序列,请在公共数据库中找到最佳匹配(hit)(其实就是做比对,blast),然后预测潜在的功能。(结构相似性与功能相似性)
(3)用动态算法(指定了这个算法:Needleman-Wunsch algorithm)对以下序列进行全局比对,打分系统用BLOSUM50空位罚分8。(需要你去了解这个算法,然后用程序实现应用到比对中,最后得出最佳的匹配方案得到结果)
(4) 在竹子的基因组片段中找基因
(5) 在植物抗病基因中找一致性序列(domains/motifs)(这个你可以用寻找motif的软件工具,如MEME)
(6) 构建植物抗病基因的系统发生树
(7) 写一篇近两年关于谷物类基因或者人类基因组相关的综述。
P.S. LZ你这个是课程结束作业么,工作量不小啊
追问
是啊,可是我一窍不通啊,看来楼上是专业的了,能不能帮帮忙啊,下周三就要交了~~~急死了都
还有“玉米相关的条目”是什么意思呀?谢谢楼上了~
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