| 查看: 812 | 回复: 4 | |||
| 当前主题已经存档。 | |||
| 当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖 | |||
[交流]
紧急求助什么是Lambda DNA？？？
|
|||
| 紧急求助什么是Lambda DNA？？？ |
回复此楼» 猜你喜欢
材料类求调剂
已经有14人回复
-
322求调剂
已经有3人回复
-
0856材料与化工，270求调剂
已经有7人回复
-
材料复试调剂
已经有5人回复
-
085600 英一数二272求调剂
已经有7人回复
-
哈工大计算机刘劼团队招生
已经有5人回复
-
高分子化学与物理调剂
已经有13人回复
-
0854复试调剂 276
已经有5人回复
-
欢迎采矿、地质、岩土、计算机、人工智能等专业的同学报考
已经有6人回复
-
0857调剂
已经有5人回复
4楼2009-03-24 11:04:26
2楼2009-03-24 10:39:25
winter_gates
金虫 (正式写手)
生命过客
- 应助: 1 (幼儿园)
- 金币: 1161.8
- 散金: 100
- 红花: 1
- 帖子: 615
- 在线: 20.4小时
- 虫号: 541629
- 注册: 2008-04-08
- 专业: 生物化学
|
Lambda is a temperate Escherichia coli bacteriophage. Virion DNA is linear and double-stranded (48502 nt) with 12 bp single-stranded complementary 5'-ends. After the phage particle injects its chromosome into the cell, the chromosome circularizes by end joining. In the lytic pathway, phage genes encoding replication, lysis and virion proteins are expressed. The chromosome replicates and the replicas are cleaved and packaged into progeny phage particles. In the lysogenic pathway, phage gene expression is repressed, and the circular chromosome inserts into the bacterial chromosome by recombination. Phage lambda DNA is a common substrate for restriction enzymes and for generating DNA size marker fragments. For large scale isolation of phage DNA, cI857Sam7, a mutant carrying four known mutations, is very often in use. The DNA sequence used to construct a phage lambda restriction map includes these mutations. The map shows enzymes that cut lambda DNA once. Enzymes produced by Fermentas are shown in blue. Enzymes which cut lambda DNA once: ApaI 10086, BplI 41036, Bsp120I 10086, Eco105I 12188, EheI 45679, NheI 34679, PdiI 20040, Pfl23II 19323, SanDI 28797, XbaI 24508, XhoI 33498. |
3楼2009-03-24 10:50:15
5楼2009-03-24 11:04:57
