介绍
STAT1同源二聚体参与Ⅱ型干扰素（Interferon-gamma）引发的信号通路，进入细胞核后会结合到启动子上的干扰素γ激活序列（Interferon-gamma activated sequence，GAS），激活IFN诱导的早期基因表达。在Ⅰ型干扰素（interferon alpha/beta）激活的信号通路，STAT1-STAT2异源二聚体与IRF9（interferon response factor 9）结合形成ISGF3（interferon stimulated gene factor 3）复合物，并结合到启动子的ISRE结合区，诱导下游基因表达。
举例
在计算机语言中
函数名：stat()
功能：得到文件的信息，将其保存在buf结构中，buf的地址以参数形式传递给stat。
用法：int _stat(const char *path,struct _stat *buffer)
参数:
const char *path：文件名或者目录名
struct _stat *buffer:结构体对象地址
返回值：返回-1表示失败。
输出结果:
File size：732
Drive：C:
Time modified：Thu Feb 07 14:39:36 2002。
命令
stat是linux中经常被忽略的一个命令，常被用来显示文件的详细信息，请注意，这个命令是区别于ls命令的，下面是Linux中--help的帮助内容：
stat - display file or file system status
stat [OPTION]... FILE...
DESCRIPTION
Display file or file system status.
-L, --dereference
follow links
-f, --file-system
display file system status instead of file status
-c --format=FORMAT
use the specified FORMAT instead of the default; output a new‐
line after each use of FORMAT
--printf=FORMAT
like --format, but interpret backslash escapes, and do not out‐
put a mandatory trailing newline. If you want a newline,
include n in FORMAT
-t, --terse
print the information in terse form
--help display this help and exit
--version
output version information and exit
The valid format sequences for files (without --file-system):
%a Access rights in octal
%A Access rights in human readable form
%b Number of blocks allocated (see %B)
%B The size in bytes of each block reported by %b
%C SELinux security context string
%d Device number in decimal
%D Device number in hex
%f Raw mode in hex
%F File type
%g Group ID of owner
%G Group name of owner
%h Number of hard links
%i Inode number
%n File name
%N Quoted file name with dereference if symbolic link
%o I/O block size
%s Total size, in bytes
%t Major device type in hex
%T Minor device type in hex
%u User ID of owner
%U User name of owner
%x Time of last access
%X Time of last access as seconds since Epoch
%y Time of last modification
%Y Time of last modification as seconds since Epoch
%z Time of last change
%Z Time of last change as seconds since Epoch
Valid format sequences for file systems:
%a Free blocks available to non-superuser
%b Total data blocks in file system
%c Total file nodes in file system
%d Free file nodes in file system
%f Free blocks in file system
等。
PHP语言
说明
array stat( string filename)
获取由filename指定的文件的统计信息。如果filename是符号连接，则统计信息是关于被连接文件本身的，而不是符号连接。lstat()和 stat()相同，只除了它会返回符号连接的状态。
如果出错，stat()返回FALSE，并且发出一条警告。
返回一个数组包含有文件的统计信息，该数组具有以下列出的单元，数组下标从零开始。除了数字索引之外自PHP4.0.6起还可以通过关联索引来访问。
