U4, U-4, or U04 may refer to:
Science and technology
*
U4 spliceosomal RNA
The U4 small nuclear Ribo-Nucleic Acid (U4 snRNA) is a non-coding RNA component of the major or U2-dependent spliceosome – a eukaryotic molecular machine involved in the splicing of pre-messenger RNA (pre-mRNA). It forms a duplex with U6, an ...
, a non-coding RNA component of the major U2-dependent spliceosome
*
Haplogroup U4 (mtDNA), a human genetic group
* U4,
unitary group of degree 4
*
U-47700
U-47700, also known as U4, pink heroin, pinky, and pink, is an opioid analgesic drug developed by a team at Upjohn in the 1970s which has around 7.5 times the potency of morphine in animal models.
U-47700 is a structural isomer of the earlier o ...
, a synthetic opioid
* U04, the
ICD-10
ICD-10 is the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD), a medical classification list by the World Health Organization (WHO). It contains codes for diseases, signs and symptoms, ...
code for severe acute respiratory syndrome
Transport
* U-Bahn lines
**
U4 (Berlin U-Bahn)
**
U4 (Frankfurt U-Bahn)
The U-Bahn Line B is the second line in the network of the Frankfurt U-Bahn. It leads in west–east direction from the central railway station (''Hauptbahnhof'') over the old town to Konstablerwache, where it splits into two branches to Bornheim ...
**
U4 (Hamburg U-Bahn)
The U4 is a line of the Hamburg U-Bahn, which opened in 2012, serving 12 stations. It is the shortest line of the network, with a length of and from Jungfernstieg to Billstedt it shares tracks with the U2. Route
The U4 is the newest line of the ...
**
U4 (Munich U-Bahn)
The Munich U-Bahn (german: U-Bahn München) is an electric rail rapid transit network in Munich, Germany. The system began operation in 1971, and is operated by the municipally owned Münchner Verkehrsgesellschaft (MVG; Munich Transport Company) ...
**
U4 (Vienna U-Bahn)
Line U4 is a line on the Vienna U-Bahn metro
Metro, short for metropolitan, may refer to:
Geography
* Metro (city), a city in Indonesia
* A metropolitan area, the populated region including and surrounding an urban center
Public transpo ...
*
German submarine ''U-4'', one of several German submarines
*
London Buses route U4
* U-4, the U.S. Air Force version of the
Aero Commander (aircraft)
The Aero Commander 500 family is a series of light-twin piston-engined and turboprop aircraft originally built by the Aero Design and Engineering Company in the late 1940s, renamed the Aero Commander company in 1950, and a division of Rockwell ...
, a light twin-engined aircraft from Aero Design and Engineering Company
* U-4, the Japanese air self-defense force designation for the
Gulfstream IV
The Gulfstream IV (or G-IV or GIV) and derivatives are a family of twinjet aircraft, mainly for private or business use. They were designed and built by Gulfstream Aerospace, a General Dynamics company based in Savannah, Georgia, United States, ...
aircraft
* U4,
PMTair (former) IATA airline designator
* U4,
Buddha Air current IATA airline designator
Organizations
* U4, the former name of the
Maple League of Universities
*
Anti-Corruption Resource Centre, based at the Chr. Michelsen Institute in Bergen, Norway
Other uses
* U4, an
unemployment figure released by the United States Bureau of Labor Statistics
* ''
Ultima IV: Quest of the Avatar'', a video game
See also
*
4U (disambiguation) 4U or 4 U may refer to:
Music
* ''4U'' (album), by Elva Hsiao, 2002
* ''4U'' (Christina Milian EP), 2015
* ''4 U'' (Cody Simpson EP), 2010
* '' 4U: Outside'', an EP by BtoB, 2021
* "4U", a song by Aero Chord, 2015
* "4 U", a song by Korn from '' ...
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