RPL34

PF3D7_0710600 (RPL34) is a structural component of the 60S large subunit of the Plasmodium falciparum cytoplasmic 80S ribosome, placed within the assembled particle by high-resolution cryo-EM of the intact 80S ribosome (PMID:24913268). Its membership in the actively translating 60S subunit has been confirmed in blood-stage schizonts by cryo-EM with atomic model building (PMID:26432834) and directly in the native cellular context by in situ cryo-electron tomography of ribosomes translating inside infected erythrocytes (PMID:40825879). Beyond this structural role within the 60S subunit, no enzymatic activity, binding partner, or post-translational modification of RPL34 itself has been characterized in the available corpus.

1. 2014 Medium

   Establishing the atomic architecture of the P. falciparum 80S ribosome answered where RPL34 physically resides, placing it as a defined structural element of the 60S large subunit.

   Evidence Cryo-EM structure of the intact P. falciparum 80S ribosome at 3.2 Å resolution

   PMID:24913268

   Open questions at the time

   • No functional experiment targets RPL34 specifically; its role is inferred from whole-ribosome membership
   • No binding partner or post-translational modification of RPL34 identified
   • Contribution of RPL34 to subunit assembly or translation not addressed
2. 2015 Medium

   Reconstructions from actively translating schizont-stage ribosomes confirmed RPL34's structural incorporation into the 60S subunit during translation rather than in an isolated or artifactual state.

   Evidence Cryo-EM reconstruction and flexible atomic model building from P. falciparum schizont ribosomes

   PMID:26432834

   Open questions at the time

   • RPL34 position inferred from the whole-ribosome model, not from RPL34-specific analysis
   • No perturbation of RPL34 to test its functional requirement
   • Stage-specific expression or dynamics of RPL34 not resolved
3. 2025 Medium

   In situ structures of ribosomes caught translating inside infected erythrocytes established that RPL34 occupies the 60S subunit in the physiological cellular environment during elongation, extending the in vitro picture to native conditions.

   Evidence In situ cryo-electron tomography of native P. falciparum 80S ribosomes inside infected human erythrocytes, yielding eight translating-state structures

   PMID:40825879

   Open questions at the time

   • No functional characterization of RPL34 itself beyond structural presence
   • Whether RPL34 conformation changes across the eight translating states is not attributed to RPL34 specifically
   • No interaction partners or modifications of RPL34 mapped

• Whether RPL34 has any role beyond being a passive structural constituent of the 60S subunit — including specific rRNA/protein contacts, assembly dependencies, or druggable features distinct from other ribosomal proteins — remains unaddressed.
• No genetic knockout or knockdown of RPL34 reported
• No binding partner, substrate, or post-translational modification identified
• No RPL34-specific functional or essentiality data