{"uid":"cap_n1GYSoD07POkjPH2_3yQ4","slug":"protein-sequence-descriptors-7b42c727","name":"Protein Sequence Descriptors","description":"Calculate composition, molecular mass and model-based charge descriptors from supplied protein sequences. For dataset analysis; not a folding or function prediction. New modular adapter: retained result recovery for 24 hours, minimal receipt metadata for 90 days. Existing live route unchanged.","url":"https://www.mahastrategies.com/api/v1/compute/biology/protein-sequence-descriptors?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"sequence":{"type":"string","maxLength":4000},"dataClass":{"enum":["public","synthetic"],"type":"string"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.013003","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.013003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.013003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.013003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_45hIRztKnGj3LbPCdBl9Y","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.013003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Calculates composition, molecular mass, and model-based charge descriptors from one or more protein sequences for dataset analysis.","exampleAgentPrompt":"Calculate the amino acid composition, molecular mass, and charge descriptors for this public protein sequence: MKTIIALSYIFCLVFA — I need the numerical descriptors for dataset analysis.","exampleUseCases":[{"title":"ML feature engineering for protein datasets","prompt":"I'm building a machine learning model and need numerical descriptors — composition, molecular mass, and charge — for this synthetic protein sequence: ACDEFGHIKLMNPQRSTVWY. Can you compute the descriptors for me?"},{"title":"Physicochemical profiling of a candidate protein","prompt":"I have a public protein sequence, MAEGEITTFTALTEKFNLPPGNYKKPKLLYCSNGGHFLRILPDGTVDGTRDRSDQHIQLQLSAESVGEVYIKSTETGQYLAMDTSGLLYGSQTPNEECLFLERLEENHYNTYTSKKHAEKNWFVGLKKNGSCKRGPRTHYGQKAILFLPLPV, and I want its molecular mass and charge descriptors calculated for a dataset I'm compiling."},{"title":"Comparing descriptors across synthetic protein variants","prompt":"For our synthetic biology dataset, compute the composition and charge descriptors for this synthetic sequence: GPGPGPGPGPGPG — we need these features for downstream statistical analysis."}],"resultDescription":"Returns computed numerical descriptors for the supplied protein sequence, including amino acid composition percentages, calculated molecular mass, and model-based charge descriptors. Results are retained for up to 24 hours for recovery; receipt metadata is available for 90 days.","failureModes":["Sequence exceeds 4000 character limit — returns validation error","Invalid characters in sequence (non-amino acid characters) — returns parse or validation error","Invalid dataClass value (not 'public' or 'synthetic') — returns schema validation error","Sequence is empty or missing — returns required field error","Service unavailable or timeout — returns HTTP 5xx error","Insufficient payment or x402 payment failure — returns 402 Payment Required"],"whenToPreferThis":"Choose this endpoint when you need fast, deterministic physicochemical descriptors (composition, molecular mass, charge) from a raw protein sequence string for downstream data analysis, machine learning feature generation, or bioinformatics pipelines — not when you need protein structure prediction, folding, or biological function annotation.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-15T06:39:22.904Z","isFirstParty":false,"canonicalSlug":"protein-sequence-descriptors-7b42c727"}