Molecular biology Archives - Laboratory Notes https://www.laboratorynotes.com/tag/molecular-biology/ Sat, 03 Oct 2026 09:04:37 +0000 en hourly 1 https://wordpress.org/?v=7.1.2 Central Dogma of Molecular Biology: From DNA to RNA to Protein https://www.laboratorynotes.com/central-dogma-of-molecular-biology-from-dna-to-rna-to-protein/ https://www.laboratorynotes.com/central-dogma-of-molecular-biology-from-dna-to-rna-to-protein/#respond Sat, 03 Oct 2026 09:04:37 +0000 https://www.laboratorynotes.com/?p=32570 The Central Dogma of Molecular Biology explains how genetic information is stored in DNA, transcribed into RNA, and translated into proteins. Explore DNA replication, transcription, RNA processing, translation, gene regulation, genetic mutations, and modern extensions of the Central Dogma.

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]]> https://www.laboratorynotes.com/central-dogma-of-molecular-biology-from-dna-to-rna-to-protein/feed/ 0 RCC1 Repeat https://www.laboratorynotes.com/rcc1-repeat/ https://www.laboratorynotes.com/rcc1-repeat/#respond Sat, 26 Sep 2026 21:11:55 +0000 https://www.laboratorynotes.com/?p=32101 RCC1 repeats form a distinctive beta-propeller structure in the RCC1 protein. This domain helps regulate Ran, a small GTP-binding protein involved in nuclear transport, chromosome organization, and cell division.

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]]> https://www.laboratorynotes.com/rcc1-repeat/feed/ 0 Metagenomic DNA Extraction: Principles, Methods, Workflow and Challenges https://www.laboratorynotes.com/metagenomic-dna-extraction-principles-methods-workflow-and-challenges/ https://www.laboratorynotes.com/metagenomic-dna-extraction-principles-methods-workflow-and-challenges/#respond Thu, 10 Sep 2026 07:49:13 +0000 https://www.laboratorynotes.com/?p=30872 Metagenomic DNA extraction is a critical step in recovering microbial DNA from complex biological and environmental samples. Learn about extraction methods, cell lysis, purification, DNA quality control, contamination, extraction bias, and sequencing requirements.

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]]> https://www.laboratorynotes.com/metagenomic-dna-extraction-principles-methods-workflow-and-challenges/feed/ 0 UniProt Enzyme Pathways and EC Numbers https://www.laboratorynotes.com/uniprot-enzyme-pathways-and-ec-numbers/ https://www.laboratorynotes.com/uniprot-enzyme-pathways-and-ec-numbers/#respond Wed, 09 Sep 2026 07:44:10 +0000 https://www.laboratorynotes.com/?p=30720 Explore how UniProt connects proteins through molecular interactions, protein complexes, binding regions, signaling pathways, cellular processes, structural information, experimental evidence, and computational predictions.

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]]> https://www.laboratorynotes.com/uniprot-enzyme-pathways-and-ec-numbers/feed/ 0 Paralogs https://www.laboratorynotes.com/paralogs/ https://www.laboratorynotes.com/paralogs/#respond Tue, 08 Sep 2026 12:57:37 +0000 https://www.laboratorynotes.com/?p=30671 Paralogs are homologous genes that arise through gene duplication. Learn how duplicated genes evolve, how paralogs differ from orthologs, and why they are important in comparative genomics and gene-family evolution.

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]]> https://www.laboratorynotes.com/paralogs/feed/ 0 GenBank Submission Process: Requirements, Steps, and Common Mistakes https://www.laboratorynotes.com/genbank-submission-process-requirements-steps-and-common-mistakes/ https://www.laboratorynotes.com/genbank-submission-process-requirements-steps-and-common-mistakes/#respond Tue, 08 Sep 2026 11:03:04 +0000 https://www.laboratorynotes.com/?p=30603 Learn the GenBank submission process, including sequence preparation, metadata, annotation, validation, accession numbers, data release, and common submission mistakes.

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]]> https://www.laboratorynotes.com/genbank-submission-process-requirements-steps-and-common-mistakes/feed/ 0 Orthologs https://www.laboratorynotes.com/orthologs/ https://www.laboratorynotes.com/orthologs/#respond Tue, 08 Sep 2026 07:34:03 +0000 https://www.laboratorynotes.com/?p=30667 Orthologs are homologous genes that diverged following speciation. Learn what orthologs are, how they differ from paralogs, and why they are important in comparative genomics, evolution, and genome annotation.

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]]> https://www.laboratorynotes.com/orthologs/feed/ 0 Homologs vs Orthologs vs Paralogs: Key Differences https://www.laboratorynotes.com/homologs-vs-orthologs-vs-paralogs-key-differences/ https://www.laboratorynotes.com/homologs-vs-orthologs-vs-paralogs-key-differences/#respond Tue, 08 Sep 2026 07:22:55 +0000 https://www.laboratorynotes.com/?p=30664 Homologs, orthologs, and paralogs describe different evolutionary relationships between genes. Learn how common ancestry, speciation, and gene duplication distinguish these important concepts in comparative genomics.

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]]> https://www.laboratorynotes.com/homologs-vs-orthologs-vs-paralogs-key-differences/feed/ 0 GenBank vs RefSeq: Understanding the Difference https://www.laboratorynotes.com/genbank-vs-refseq-understanding-the-difference/ https://www.laboratorynotes.com/genbank-vs-refseq-understanding-the-difference/#respond Tue, 08 Sep 2026 06:28:35 +0000 https://www.laboratorynotes.com/?p=30660 GenBank and RefSeq are important NCBI sequence resources with different purposes. Learn how their records, curation, redundancy, accession numbers, and applications differ.

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]]> https://www.laboratorynotes.com/genbank-vs-refseq-understanding-the-difference/feed/ 0 GenBank Release History: Major Milestones in Database Growth https://www.laboratorynotes.com/genbank-release-history-major-milestones-in-database-growth/ https://www.laboratorynotes.com/genbank-release-history-major-milestones-in-database-growth/#respond Tue, 08 Sep 2026 06:23:44 +0000 https://www.laboratorynotes.com/?p=30658 Explore the history of GenBank through major database releases, from its early sequence records in 1982 to today's massive collection of nucleotide sequence data.

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]]> https://www.laboratorynotes.com/genbank-release-history-major-milestones-in-database-growth/feed/ 0 GenBank, DDBJ, and ENA: Understanding the International Nucleotide Sequence Database Collaboration https://www.laboratorynotes.com/genbank-ddbj-and-ena-understanding-the-international-nucleotide-sequence-database-collaboration/ https://www.laboratorynotes.com/genbank-ddbj-and-ena-understanding-the-international-nucleotide-sequence-database-collaboration/#respond Tue, 08 Sep 2026 06:12:50 +0000 https://www.laboratorynotes.com/?p=30656 GenBank, DDBJ, and ENA form the International Nucleotide Sequence Database Collaboration (INSDC). Learn how these databases exchange sequence data and maintain international standards.

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]]> https://www.laboratorynotes.com/genbank-ddbj-and-ena-understanding-the-international-nucleotide-sequence-database-collaboration/feed/ 0 GenBank Statistics: Database Growth and the Expansion of Sequence Data https://www.laboratorynotes.com/genbank-statistics-database-growth-and-the-expansion-of-sequence-data/ https://www.laboratorynotes.com/genbank-statistics-database-growth-and-the-expansion-of-sequence-data/#respond Tue, 08 Sep 2026 06:02:03 +0000 https://www.laboratorynotes.com/?p=30653 GenBank has expanded dramatically with the growth of genome sequencing and high-throughput biology. Explore GenBank statistics, database size, sequence records, nucleotide bases, WGS and TSA data, and historical database growth.

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]]> https://www.laboratorynotes.com/genbank-statistics-database-growth-and-the-expansion-of-sequence-data/feed/ 0 GenBank Data Quality, Updates, and Database Releases https://www.laboratorynotes.com/genbank-data-quality-updates-and-database-releases/ https://www.laboratorynotes.com/genbank-data-quality-updates-and-database-releases/#respond Mon, 07 Sep 2026 10:05:22 +0000 https://www.laboratorynotes.com/?p=30635 GenBank is a continuously updated nucleotide sequence database. Learn how GenBank data quality, record updates, validation, database releases, and release statistics affect sequence analysis and reproducible research.

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]]> https://www.laboratorynotes.com/genbank-data-quality-updates-and-database-releases/feed/ 0 GenBank in Comparative Genomics: Applications and Research Methods https://www.laboratorynotes.com/genbank-in-comparative-genomics-applications-and-research-methods/ https://www.laboratorynotes.com/genbank-in-comparative-genomics-applications-and-research-methods/#respond Mon, 07 Sep 2026 09:56:26 +0000 https://www.laboratorynotes.com/?p=30632 GenBank provides nucleotide sequence data that researchers use in comparative genomics to compare genes and genomes, identify conserved sequences, investigate genome evolution, study gene gain and loss, and analyze relationships among organisms.

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]]> https://www.laboratorynotes.com/genbank-in-comparative-genomics-applications-and-research-methods/feed/ 0 BLASTN: How to Compare DNA and RNA Sequences https://www.laboratorynotes.com/blastn-how-to-compare-dna-and-rna-sequences/ https://www.laboratorynotes.com/blastn-how-to-compare-dna-and-rna-sequences/#respond Mon, 07 Sep 2026 09:17:34 +0000 https://www.laboratorynotes.com/?p=30625 BLASTN is a nucleotide sequence similarity-searching tool used to compare DNA and RNA-derived sequences with nucleotide databases. Learn how BLASTN works, how to evaluate matches, and how it is used with GenBank.

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]]> https://www.laboratorynotes.com/blastn-how-to-compare-dna-and-rna-sequences/feed/ 0 What Is BLAST? Basic Local Alignment Search Tool Explained https://www.laboratorynotes.com/what-is-blast-basic-local-alignment-search-tool-explained/ https://www.laboratorynotes.com/what-is-blast-basic-local-alignment-search-tool-explained/#respond Mon, 07 Sep 2026 08:57:34 +0000 https://www.laboratorynotes.com/?p=30622 BLAST is a widely used bioinformatics tool for finding similarities between DNA, RNA, and protein sequences. Learn how BLAST works, its major programs, applications, and role in sequence analysis.

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]]> https://www.laboratorynotes.com/what-is-blast-basic-local-alignment-search-tool-explained/feed/ 0 BLAST and GenBank: How to Compare DNA Sequences https://www.laboratorynotes.com/blast-and-genbank-how-to-compare-dna-sequences/ https://www.laboratorynotes.com/blast-and-genbank-how-to-compare-dna-sequences/#respond Mon, 07 Sep 2026 08:42:48 +0000 https://www.laboratorynotes.com/?p=30618 BLAST and GenBank work together to make DNA sequence analysis easier. Learn how BLAST compares nucleotide sequences, how to evaluate BLAST hits, and how GenBank records help identify and interpret DNA sequences.

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]]> https://www.laboratorynotes.com/blast-and-genbank-how-to-compare-dna-sequences/feed/ 0 GenBank Flat File Format Explained with Examples https://www.laboratorynotes.com/genbank-flat-file-format-explained-with-examples/ https://www.laboratorynotes.com/genbank-flat-file-format-explained-with-examples/#respond Mon, 07 Sep 2026 07:59:42 +0000 https://www.laboratorynotes.com/?p=30611 Understand the GenBank flat file format with practical examples of LOCUS, ACCESSION, VERSION, FEATURES, qualifiers, ORIGIN, and nucleotide sequence data.

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]]> https://www.laboratorynotes.com/genbank-flat-file-format-explained-with-examples/feed/ 0 GenBank File Format: A Complete Guide https://www.laboratorynotes.com/genbank-file-format-a-complete-guide/ https://www.laboratorynotes.com/genbank-file-format-a-complete-guide/#respond Mon, 07 Sep 2026 01:19:27 +0000 https://www.laboratorynotes.com/?p=30608 Learn how the GenBank file format organizes nucleotide sequences, accession information, annotations, biological features, qualifiers, references, and sequence data.

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]]> https://www.laboratorynotes.com/genbank-file-format-a-complete-guide/feed/ 0 GenBank Sequence Submission Tools: Preparing and Validating Your Data https://www.laboratorynotes.com/genbank-sequence-submission-tools-preparing-and-validating-your-data/ https://www.laboratorynotes.com/genbank-sequence-submission-tools-preparing-and-validating-your-data/#respond Mon, 07 Sep 2026 01:13:07 +0000 https://www.laboratorynotes.com/?p=30605 Learn how to prepare and validate nucleotide sequence data for GenBank submission, including FASTA files, source metadata, annotation, Submission Portal workflows, validation, and common submission problems.

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