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Finding Genes in the
Rice Genome
Hao Bailin
T-Life Research Center, Fudan University
Beijing Genomics Institute , Academia Sinica
Institute of Theoretical Physics, Academia Sinica
(www.itp.ac.cn/~hao/)
On-going work by a team of 10-12 people since
August 2001: Zheng Weimou, Xie Huimin, Liu
Jinsong, Xu Zhao, Fang Lin, Li Heng, Gao Lei, Jin
Jiao, et al. Nothing written yet.
Two Cultivars of Rice
•
Oryza sativa ssp. indica ( 籼稻 )
•
Oryza sativa ssp. Japonica ( 粳稻 )
The difference was described in Xu Shen’s
( 许慎《说文解字》 ) Chinese Dictionary of
East Han Dynasty (~ 2
nd
Century AD)
J.H. Zhang et al. Rice cultivation of Jianhu Remains in
Henan Province, Science J. ( 《科学》杂志 ) , 53
( 4 ), 2002 , 3 (in Chinese)
cccaatatcttgcttcagcaagatattgggtatttctagctttcctttcttcaaaaattgctatatgttagcagaaaagccttatccattaagagatggaacttcaagagcagctaggtctagagggaagttgtgagcattacgttcgtgcattacttccataccaagattagcacggttgatgatatcagccc
aagtattaataacgcgaccttggctatcaactacagattggttgaaattgaatccgtttagattgaaagccatagtactaatacctaaagcagtgaaccaaatccctactacaggccaagcagccaagaagaagtgtaaagaacgagagttgttaaaactagcatattggaagattaatcggccaaaa
taaccatgagcggccacaatattataagtttcttcctcttgaccaaatctgtaaccctcattagcagattcgttttcagtggtttccctgatcaaactagaggttaccaaggaaccatgcatagcactgaatagggaaccgccgaatacaccagctacacctaacatgtgaaatggatgcataaggatgt
tatgctctgcctggaatacaatcataaagttgaaagtaccagatattcctaaaggcataccatcagagaaacttccttgaccaatagggtaaatcaagaaaacagcagtagcagctgcaacaggagctgaatatgcaacagcaatccaaggacgcatacccagacggaaactcagttcccactca
cgacccatataacaagctacaccaagtaagaagtgtagaacaattagctcataaggaccaccattgtataaccactcatcaacagatgcagcttcccaaattgggtaaaagtgcaatccgatcgccgcagaagtaggaataatggcaccagagataatattgtttccgtaaagtaaagaaccagaa
acaggctcacgaataccatcaatatctactggaggggcagcgatgaaggcgataataaatacagaagttgcggtcaataaggtagggatcatcaaaacaccgaaccatccgatgtaaagacggttttcggtgctagttatccagttgcagaagcgaccccacaggcttgtactttcgcgtctctct
aaaattgcagtcatggtaagatcttggtttattcaaattgcaaggactcccaagcacacgtattaactagaaagataatagaaggcttgttatttaacagtataatatagactatataccaatgtcaaccaagccagccccgacagttgtatatccatacaacaaaatttaccaaaccaaaaaattttgtaaa
tgaagtgagtgaaaaatcaaaactcagattgctcctttctagtttccatatgggttgcccgggactcgaacccggaactagtcggatggagtagataattattccttgttacaatagagaaaaaacctctccccaaatcgtgcttgcatttttcattgcacacgactttccctatgtagaaataggctatttct
attccgaagaggaagtctactaatttttttagtagtaagttgattcacttactatttattatagtacagagaacatttcagaatggaaactgtgaaagttttaccttgatcatttatcaatcatttctagtttattagttttgtttaatgattaattaagaggattcaccagatcattgatacggagaatatccaaatacc
aaatacgctcactgtgcgatccacggaaagaaaagtaagttgttttggcgaacatcaaagaaaaaacttgctcttcttccgtaaaaaattcttctaaaaataccgaacccaaccattgcataaaagctcgtaccgtgcttttatgtttacgagctaaagttctagcgcatgaaagtcgaagtatatacttta
gtcgatacaaagtcttcttttttgaagatccactgtgataatgaaaaagatttctacatatccgaccaaaccgatcaagaatatcccaatccgataaatcggtccaaattggtttactaataggatgccccgatccagtacaaaattgggcttttgctaaagatccaatgagaggagtaacagggactttg
gtatcgaattttttcatttgagtatctattagaaatgaattctccagcatttgattccttactaacaaagaatttattggtacacttgaaaagtaccccagaaaatcgaagcaagagttttctaattggtttagatggatcctttgcggttgagtccaaaaagagaaagaatattgccacaaacggacaaggta
acatttccatttcttcttcaaaagaagagttccttttgatgcaagaattgcctttccttgatatcgaacataatgcataaggggatccataacgaaccatatggttttccgaaaaaaagcagggtacattaacccaaaatgttccatcttcctagaaaagatgattcgttccagaaaggttccggaagaagtt
aatcgcaagcaagaagattgtttacgaagaaacaacaagaaaaattcatattctgatacataagagttatataggaaccgaaatagtcttttattttcttttttcaaaataaaaatggatttcattgaagtaataaaactattccaattcgagtagtagttgagaaagaatcgcaataaatgcaaggatggaa
catcttggatccggtattgaaggagttgaagcaagatatccaaatggataggatagggtatttctatatgtgctagataatgtaagtgcaaaaatttgtcttctaaaaaaggaaatattgaatgaatagatcgtaaattctgaaactttggtatttctttttcttccggacaagactgttctcgtagcgagaatg
ggatttctacaacgatcgcaaacccctcagatagaatctgagaataaaactcagaataaaaaaaattgttgtaatccaataatcgatcttggttaggatgattaaccaaattaatccaaaaattctgctgatacattcgaatcattaaccgtttcacaagtagtgaactaaatttcttgttattagaaccaataa
tttcgacaagttcggaaccatttaatccataatcatgggcaaacacataaatgtactcctgaaagagtagtgggtagacgaaatattgtctaggaaatttaagtttttctgaataaccctcgaatttttccatttgtatttctacttgaatcagagagagagaaatatttctcggtttatcaaatggtgatacata
gtacaatatggtcagaacagggtgttgcattttttaatacaaacccctggggaagaaaaggagtctaatccacggatctttttccgctccttttctatccaatttgtttatgtttgttctaattacaaaagagaacaaatcctttatttttgcaggccaattgctcttttgactttgggatacagtctctttatcaatat
actgcttcttttacacattcaatccataacatccttttcaatccaaaatcaagaataattaggatttctaaaaaaaaaagaaaaaatcaaaggtctactcataggaaaaccagcttttccctacatcaggcactaatctatttttaacgtctaattagatcagggagttcttccaattaagaagttaagctcgttg
ctttttgttttaccagaattggagccaggctctatccatttattcattagacccagaaaatcagaatttttttattccattccaaaaatccaaaataagaaattgattttattacgacatgctattttttccattcattacccttgaggatcagtcgcggtcttatagactctaccaagagtctggacgaattttttgctt
catccaaatgtgtaaaagatcatagtcgcacttaaaagccgagtactctaccattgagttagcaacccagataaactaggatcttagatacgatcgaaatccaaaaatcaatggaattacaccgcacacccctgtcaaaatcttaaaatagcaagacattaaaagaaagattttatcaccattgaaaac
actcagataccaaaaggaacgggtctggttaaatttcactaaggttaaaagtggcaccaatcacgatcgtaaaattgtcatttttttagcatttttatttaaataaataaataaatcttgtatgagagtacaaacaagagggacaaccctaccatttgagcaaagtgtaggcaaaaaacctaatagggagt
gaggataaagagacttatccatctacaaattctagatgttcaatggacctttgtcaatggaaatacaatggtaagaaaaaaattagatagaaaaactcaaaaaaataaaggcttatgttggattggcacgacataaatccagtcaaaaataggattaagaaagaggcaaattatttctaaatagttagac
aacaagggatactagtgagcctctcctagttttttattcatttagttcttcaattaactcaaagttctttctttttctttaaagaattccgccttccttaaaatatcagaaacggttcttgtaggttgagcacctttttcaaggaaatagagaatagctggaacatttaaacaagtttgattctttatcggatcataaaa
acctacttttcgaagatctcttccttctcttcgagatcgaacatcaattgcaacgattcgatagacagcttattgggatagatgtagataaataaagccccccctagaaacgtataggaggttttctcctcatacggctcgagaatatgacttgcattaatttccgtacagaaaaaacaaatttcatttatactc
atgactcaagttgactaattttgattgacagacttgaaagaaaaaaatcctttgaaattttttgagtcgtctctaaactcttttctttgcctcatctcgaacaaattcacttttattccttattccggtccaattctattgttgagacagttgaaaatcgtgtttacttgttcgggaatcctttatctttgatttgtgaaatc
cttgggtttaaacattacttcgggaattcttattcttttttctttcaaaagagtagcaacatacccttttttcttatttccttcgataaagcatttccctcttctatagaaatcgaatatgagcgattgattctgatagactttaatcaaaagagttttcccatatcttccaaaattggactttcttcttattttaaccttttgat
ttctatattatttcgatttctatattaagggtagaatgacaaagttggcctaatttattagttttcactaaccctagattctttcccttgataaaaaataaattctgtcctctcgagctccatcgtgtactatttacttagcttacttacaaacaacccagcgaaaattcggttcgggacgaatagaacagactatgt
cgagccaagagcattttcattactatggaaaatggtggatagcaaaatccacaatcgatcgtgtccttcaagtcgcacgttgctttctaccacatcgttttaaacgaagttttaacataacattcctctaatttcattgcaaagtgttatagggaattgatccaatatggatggaatcatgaatagtcattagtt
tcgttttttgtatactaattcaaacttgctttgctatctatggagaaatatgaataaaagaaattaagtatttatcgggaaagactccgcaaagagccaatttatttaaacccatattctatcatatgaatgaaatatagttcgaaaaaagggaataaacaagtttgcttaagacttatttattatggaatttccatc
ctcaacagaggactcgagatgatcaatccaatcctgaaatgataagagaagaattgactcttctccaacaaataaactatcaacctcccgtttaattaatttaattaatatattagattagcaatctatttttccataccatttttccgtaacaaaactaattaactattaactagttaaactattgcaatgaaaag
aaagttttttggtagttatagaattctcgtatttcttcgactcgaataccaaaagaaagaaaaaaatgaagtaaaaaaaacgcatttcctgtaaagtaaaattaaggtctttgcttttacttattttttcttttacctaaaagaagcaactccaaatcaaaattgaatccattctatctaacgagcagttcttatcttat
ctttaccgggatggatcattctggatatttaaaaaatcgcggatcgagatcgtttttgcttaaccaaagaaagaaaaagaagaaggaaccttttttactaataaaatactataaaaaaaatttatctctatcataaatctatctctaccataaaggaataggtctcgttttttatacaatgttctacgtcaagttta
aaattttttcatgaaaaaaagattttcaatttgactggacttgacactggattatgttttctgagacagaaaatgaacgcattaggactgcatcgaatctaagagtttataagagaaaaaaattctctttaataaactttatgtctcgtgcagaatacaatacgatttcatctttcgtttcatcagaaaaaatctgg
gacggaaggattcgaacctccgagtaacgggaccaaaacccgctgccttaccacttggccacgccccatttcgggttttatgcgacactaataaacagtattatgtttatttcttattcgtcaatcctacttcaattacataaaaatggggggtattctcttggtaggattctagacatgcgaataatatag
aatccaaaaaatgcattgatcattacatggaattctattaagatattatatgaaagtcgaatttcttccactctcatttgagagtgcgaatacaaggaggtattttgtgtttgggaaagtccgaagaaaaaaggattttgaatcctccttttcctttttcccttagaaaaataactcaatcaaaatccaattatcta
ctctacaagaacgaaacgcttgttatgcctaatatacttagtttaacctgtatttgttttaattctgttatttatccgactagttttttcttcgccaaattgcccgaagcttatgccattttcaatccaatcgtggattttatgcctgtcatacctgtactcttttttctattagcctttgtttggcaagctgctgtaagttttc
gatgaaatctttactactctgtctgccaaattgaatcatgtattcattctaaaaaaattcgaaaaatggataagagccgagaagtcttatattatgaaccttcgattctaaaattcaaattcttctacattgaatgtatagctgcagcaataaatttggatcagcctttctactccctgcatctacgttgagcaggt
atctttaggtaaccgcacaatacctaacctaatttattgataagagtgcttattataaatcaattcttgcaatttttttcaaaaattgatttttgcatttttaggtgtcaaaataaacaaaacccatcctagtggatttgtgtggtaaggaaaaacgggtaatctattccttaaaaaaaaatcttggagattatgtaat
gcttactctcaaactttttgtttatacagtagtgatattctttgtttccctctttatctttggattcttatctaatgatccaggacgtaatcctgggcgtgacgagtaaaaatccaaaattttttcttacaaattggatttgtttcatacatttatctacgagaaaatccgggggtcagaattccttccaattcgaaagtc
ccaaacgatccgagggggcggaaagagagggattcgaaccctcggtacaaaaaaattgtacaacggattagcaatccgccgctttagtccactcagccatctctccccgttccaaatcgaaaggtttccgtgatatgacagaggcaagaaataacgattgcaaaaaatccttcctttttctttcaaa
agttcaaaaaaattatattgccaattccattttagttatattcttttttcttaatgttaataaaaaaaagaagaaaattcttcttttttctttctaattctaaaattggatattggctaaaagacaatcagatagattttctcttcagcaggcatttccatataggacttgttataataaaacaagcaggttatagaaaaaa
actcttttttttattatttatcaacaaagcaaaaaggggtcttatcaaaccaacccaccccataaaattggaaagaaagataaagtaagtggacctgactccttgaatgaggcctctatccgctattctgatatataaattcgatgtagatgaaattgtataagtggatttttttgtatttccttagacttagacca
cgcaaggcaagaatttctcgctatttactatttcatattcttgttactagatgttctataggaataagaagaaatcgcaacccctttccgctacacataaaaatggatttcgaaagtcaatttttcttttcaatatctttactttttttcagaatcctatttttgttcttatacccatgcaatagagagcgagtgggaaa
agggaggttactttttttcattttttccttaaaaaataggctttcttggaaataggaatcatggaataatctgaattccaatgtttatttctatagtataagaaaaactaattgaatcaaattcatggatttaccacgacctcggctgtgaccccatagataaaaatgcaaaatttctatcttcgagaccattgaaaa
aaggcattgaacgagaaaaaatcgtccacagataatctatcgtatgccttggaagtgatataaggtgctcggaaatggttgaagtaattgaataggaggatcactatgactatagcccttggtagagttactaaagaagaaaatgatttatttgatattatggacgactggttacgaagggaccgttttg
tttttgtaggatggtctggcctattgctttttccttgtgcttatttcgctttaggaggttggtttacagggacaacttttgtaacttcttggtatacccatggattggcgagttcctatttggaaggttgcaatttcttaaccgcagcagtttccacccctgccaatagtttagcacactctttgttgctactatgggg
cccggaagcacaaggggattttactcgttggtgtcaattaggtggtctgtggacttttgttgctctccatggggcttttgcactaataggtttcatgttacgtcaatttgaacttgctcggtctgttcaattgcggccttataatgcaatttcattctctggcccaatcgctgtttttgtttccgtattcctgatttat
ccactggggcaatccggttggttctttgcgccgagttttggcgtagcagcgatatttcgattcatcctcttcttccaaggatttcataattggacgttgaacccatttcatatgatgggagttgccggagtattaggcgcggctctgctatgcgctattcatggggcaaccgtgga
Gene-Finding by Computer
Starting from early 1980s:
•
“Ab initio” or “de novo” algorithms: GeneMark,
GenScan, FgeneSH, Genie, …based on gene-
structure models and training data. (Our on-
going project: BGF, the BGI Gene Finder)
•
Homolog methods based on sequence alignment
with known genes in databases
•
Mixed approach using both strategy: TwinScan
Different Stages of Gene-Finding
•
Use all possible existing programs and services o
n the web with a public-domain or home-made ge
nome viewer
•
Write your own gene-finder, trained for the specif
ic organism
•
A dream for the time being: design a self-training
and self-developing program “for any species” w
hich would improve itself iteratively starting fro
m a few available reads, cDNAs, and ESTs
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