Protein: DNA-directed RNA polymerase II subunit RPB4 (Q1JQ91)
Organism: Bos taurus (Bovine)
Function: Core component of RNA polymerase II (Pol II), a DNA-dependent RNA polymerase which synthesizes mRNA precursors and many functional non-coding RNAs using the four ribonucleoside triphosphates as substrates. Pol II is the central component of the basal RNA polymerase II transcription machinery. It is composed of mobile elements that move relative to each other. POLR2D/RPB4 is part of a subcomplex with POLR2G/RPB7 that binds to a pocket formed by POLR2A/RPB1, POLR2B/RPB2 and POLR2F/RPABC2 at the base of the clamp element. The POLR2D/RPB4- POLR2G/RPB7 subcomplex seems to lock the clamp via POLR2G/RPB7 in the closed conformation thus preventing double-stranded DNA to enter the active site cleft. The POLR2D/RPB4-POLR2G/RPB7 subcomplex binds single- stranded DNA and RNA
Subcellular location: Nucleus
InterPro domains:
- IPR010997: HRDC-like superfamily (homologous_superfamily) [5-140]
- IPR006590: RNA polymerase Rpb4/RPC9, core (domain) [24-141]
- IPR005574: RNA polymerase subunit Rpb4/RPC9 (family) [32-136]
- IPR045222: DNA-directed RNA polymerase II subunit Rpb4-like (family) [10-141]
- IPR038324: Rpb4/RPC9 superfamily (homologous_superfamily) [14-142]
Sequence:
MAAGGSDPRSGDVEEDASQLIFPKEFETAETLLNSEVHMLLEHRKQQNESAEDEQELSEVFMKTLNYTARFSRFKNRETIASVRSLLLQKKLHKFELACLANLCPETAEESKALIPSLEGRFEDEELQQILDDIQTKRSFQY
Predicted GO terms:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0009058 (biosynthetic process), GO:0044237 (cellular metabolic process), GO:0071704 (organic substance metabolic process), GO:0044238 (primary metabolic process), GO:0006807 (nitrogen compound metabolic process), GO:0044249 (cellular biosynthetic process), GO:0006725 (cellular aromatic compound metabolic process), GO:1901360 (organic cyclic compound metabolic process), GO:0034641 (cellular nitrogen compound metabolic process), GO:1901576 (organic substance biosynthetic process), GO:0006139 (nucleobase-containing compound metabolic process), GO:0043170 (macromolecule metabolic process), GO:0046483 (heterocycle metabolic process), GO:0009059 (macromolecule biosynthetic process), GO:1901362 (organic cyclic compound biosynthetic process), GO:0044271 (cellular nitrogen compound biosynthetic process), GO:0090304 (nucleic acid metabolic process), GO:0019438 (aromatic compound biosynthetic process), GO:0010467 (gene expression), GO:0018130 (heterocycle biosynthetic process), GO:0034654 (nucleobase-containing compound biosynthetic process), GO:0016070 (RNA metabolic process), GO:0032774 (RNA biosynthetic process), GO:0097659 (nucleic acid-templated transcription), GO:0006351 (DNA-templated transcription), GO:0006366 (transcription by RNA polymerase II)
Cellular Component (CC): GO:0005575 (cellular component), GO:0032991 (protein-containing complex), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0140535 (intracellular protein-containing complex), GO:1902494 (catalytic complex), GO:0140513 (nuclear protein-containing complex), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0030880 (RNA polymerase complex), GO:1990234 (transferase complex), GO:0043229 (intracellular organelle), GO:0043233 (organelle lumen), GO:0055029 (nuclear DNA-directed RNA polymerase complex), GO:0016591 (RNA polymerase II, holoenzyme), GO:0043227 (membrane-bounded organelle), GO:0000428 (DNA-directed RNA polymerase complex), GO:0043231 (intracellular membrane-bounded organelle), GO:0061695 (transferase complex, transferring phosphorus-containing groups), GO:0005665 (RNA polymerase II, core complex), GO:0070013 (intracellular organelle lumen), GO:0005634 (nucleus), GO:0031981 (nuclear lumen)